AKM AP2071 High current (8a) white leds driver for flash with i2c Datasheet

[AP2071AEN]
AP2071AEN
High Current (8A) white LEDs driver for Flash with I2C
1. General Description
The AP2071AEN is a white LED driver IC for camera flash, using EDLC (Electronic Double Layer
Capacitor) in portable equipment. The AP2071AEN integrates a current mode synchronous boost DC-DC
converter and four maximum 2A current sources (maximum 8.0A total). The internal boost DC-DC converter
integrates a switching FET and synchronous rectifier, and supporting small size multilayer inductor with
2MHz switching frequency. An integrated EDLC voltage control circuit and a charge current control circuit
makes the AP2071AEN most suitable for EDLC charge systems. The AP2071AEN also includes eight
protections that are an under voltage lock out, EDLC cell short/open protection, thermal detection, LED
open/short detection, LED thermal protection, output-ground short protection, inductor current limitation and
flashing time limitation to avoid significant system problems. Flash current, torch current, charge current,
inductor limit current, flash on-time and EDLC full charge voltage are programmable through I2C interface.
The AP2071AEN is housed in a small size package (24-pin QFN, 4.0mm x 4.0mm) to utilize less board space.
2. Features
 Power Supply Voltage(VIN): 2.5V~5.5V
 LED Current:
max 8.0A, total (max 2.0A/ch)
 High Efficiency:
- 90% @ VIN pin=3.7V, VOUT pin=4.5V, total LED current= 240mA,
Torch mode, with recommended external parts
 Switching Frequency:
2.0 MHz
 Mode:
- Charge (charge to EDLC)
- Flash
- Torch
- Bypass torch
(Boost circuit off, only drive LEDs with fixed current source)
- Discharge
 I2C Function:
- Flash/Torch LED current setting (Each channel can be set independently)
- Flashing ON-time setting
- Charge current setting
- Current Limit value setting
- Full charge voltage setting (EDLC)
- Discharge finishing voltage setting (EDLC)
- NTC voltage detection voltage setting
 Protection Function:
- UVLO (Under Voltage Lock Out) protection
- EDLC cell short/open protection
- Thermal protection
- LED Open/Short protection
- LED thermal protection
- Output-GND protection
- Inductor current limitation protection
- Flashing time limitation protection
 Ta:
-30 to 85C
 Package:
24-pinUQFN (4.0 x 4.0mm, 0.5mm pitch)
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[AP2071AEN]
3. Table of Contents
1.
2.
3.
4.
5.
General Description ....................................................................................................................................1
Features .......................................................................................................................................................1
Table of Contents ........................................................................................................................................2
Block Diagram ............................................................................................................................................3
Pin Configurations and Functions ...............................................................................................................4
■ Ordering Guide ..........................................................................................................................................4
■ Pin Configurations .....................................................................................................................................4
■ PIN Functions ............................................................................................................................................4
6. Absolute Maximum Ratings .......................................................................................................................5
7. Recommended Operating Conditions .........................................................................................................5
8. Electrical Characteristics ............................................................................................................................6
■ Input Logic Characteristics ........................................................................................................................7
■ Timing Diagram .........................................................................................................................................7
9. Functional Descriptions ..............................................................................................................................8
■ Charging Sequence ....................................................................................................................................9
■ Flashing Sequence ...................................................................................................................................10
■ Torching Sequence ..................................................................................................................................11
■ Bypass Torching Sequence ......................................................................................................................14
■ Discharging Sequence .............................................................................................................................15
■ Protection Function..................................................................................................................................16
■ LED Temperature Detection Function ....................................................................................................17
■ Typical Performance Characteristics .......................................................................................................18
■ Serial Control Interface ...........................................................................................................................20
10. Register Map .........................................................................................................................................23
11. Recommended External Circuits ...........................................................................................................28
■ Recommended Parts ................................................................................................................................28
12. Package ..................................................................................................................................................29
■ Outline Dimensions .................................................................................................................................29
■ PCB layout ...............................................................................................................................................29
■ Marking....................................................................................................................................................29
13. Revise History .......................................................................................................................................30
IMPORTANT NOTICE ..............................................................................................................................31
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[AP2071AEN]
4. Block Diagram
Cin
VIN
SW
OVP
Slop
e
Compensatio
n
Back Gate
Control
Oscillator
22MHz
.0
VOUT
Cout
UVLO
∑
CONTROL
LOGIC
PWM
COMPARATOR
Control
VCAP
VIN
Current
Limit
EDLC
DET
Error Amp
NTC
DET
SCL
SDA
STROBE
LED1
2
I C I/F
& Control
LED2
Current
&Control
CHARGE
LED3
EN
LED4
AGND PGND
GND1 GND2 GND3 GND4 GND5 GND6
ADDR
Figure 1. AP2071AEN Block Diagram
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[AP2071AEN]
5. Pin Configurations and Functions
■ Ordering Guide
30 to 85C
AP2071AEN
24-pin QFN
GND1
LED1
PGND
SW
VOUT
VCAP
18
17
16
15
14
13
■ Pin Configurations
GND2
19
12
AGND
LED2
20
11
VIN
GND3
21
10
DET
GND4
22
9
EN
LED3
23
8
NTC
7
ADDR
5
6
CHARGE
3
2
STROBE
4
2
LED4
SCL
1
24
SDA
Exposed pad
GND6
GND5
Top View
■ PIN Functions
No.
Pin Name
I/O
1,18,19,
21,22,24
GND1-6
-
2
LED4
I
3
4
5
STROBE
SCL
SDA
I
I
I/O
6
CHARGE
I
7
ADDR
I
8
NTC
I/O
9
10
11
12
EN
DET
VIN
AGND
I
O
I
-
13
14
15
16
VCAP
VOUT
SW
PGND
O
O
I
-
17
LED1
I
20
LED2
I
23
LED3
I
MS1607-E-00
Function
Ground for current sources
Connect to Flash/Torch LED pin4
(This pin must be open when not used)
Flashing control input pin
I2C clock input pin
I2C data input pin
EDLC charge pin
0: charge stop (DC-DC convert is stopped too)
(Connect this pin to GND when not used)
Chip address LSB bit
Low: “0”; High: chip address= “1”
Connect to NTC resistor
(Connect this pin to GND when not used)
Enable pin
EDLC full charge voltage detection pin (Open drain)
Connect to battery
Ground for Analog circuit
1: charge
EDLC voltage protection pin
Voltage output pin
Connect to coil
Ground for DC-DC
Connect to Flash/Torch LED pin1
(This pin must be open when not used)
Connect to Flash/Torch LED pin2
(This pin must be open when not used)
Connect to Flash/Torch LED pin3
(This pin must be open when not used)
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[AP2071AEN]
6. Absolute Maximum Ratings
(AGND=PGND=GND1~6=0V; (Note 1))
Symbol
min
max
Unit
Parameter
VIN, SW, VOUT, LED1, LED2, LED3, LED4,
VIN1
6.5
V
0.3
NTC and VCAP pins
DET, EN, STROBE, CHARGE, SCL, SDA and
VIN2
VIN + 0.3
V
0.3
ADDR pins (Note 2)
Junction Temperature
TJ
125
C
Storage Temperature
TSTG
150
55
C
Maximum Power Dissipation (Note 3)
PD
2.5
W
Note 1. All voltage is respect to ground. All ground should be connecting to same ground.
Note 2. The maximum value is a lower value either 6.5V or VIN+0.3V.
Note 3. Measured by recommended foot pattern; Size: 50 x 40mm x 1.0mm, 2 layered board (metal densities
of top layer: 80%, metal densities of bottom layer: 80%). This value is reduced by 25mW/C when the
temperature is more than 25C (Ta≥25). The thermal resistance is 40C/W
The value is internal dissipation of the AP2071AEN that does not include power dissipation of
external parts.
“Exposed PAD” must be connected to ground.
Note: Since the actual thermal resistance is much dependent on the board layout and the thermal design, make
sure that the junction temperature of the IC will not exceed 125°C by the system design.
WARNING: Operation at or beyond these limits may result in permanent damage to the device.
Normal operation is guaranteed at these extremes.
7. Recommended Operating Conditions
(AGND=PGND=GND1~6=0V; (Note 1))
Symbol
min
typ
max
Unit
Vbatt
2.5
3.7
5.5
V
VINPUT
1.2
VIN
V
Ta
-30
25
85
C
Parameter
Input Voltage (VIN)
SCL, SDA, STROBE, CHARGE, EN, ADDR pins
Operation Temperature
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8. Electrical Characteristics
(AGND=PGND=GND1~6=0V ;(Note 1), VIN=3.7V, Ta=25°C, Recommend Parts, unless otherwise specified)
Parameter
Symbol
min
typ
max
Unit
Power-down Current
IPD
0.5
2.0
µA
Quiescent Current in VIN pin
IQ
1.0
1.5
mA
VOUT Detection Voltage
Accuracy1
AVOUT1
-1.6
1.6
%
VOUT Detection Voltage
Accuracy2
AVOUT2
-3.0
3.0
%
VOUT Detection Voltage
Accuracy3
AVOUT3
-3.5
3.5
%
LED pins Voltage1 (Flash mode)
LED pins Voltage2 (Torch mode)
VLED1
VLED2
0.45
0.60
V
V
LED Current Accuracy1 (flash)
ALEDC1
-10
10
%
LED Current Accuracy2 (flash)
ALEDC2
-12
12
%
LED Current Accuracy3 (flash)
ALEDC3
-18
18
%
LED Current Accuracy4 (torch)
ALEDC4
-15
15
%
LED Current Accuracy5 (torch)
ALEDC5
-20
20
%
Charger Current Accuracy
Maximum Limit Current
Efficiency (Note 4)
(Torch mode)
Under Voltage Lock Out
Boost Frequency1
ACHAR
IMAXL
-10
1200
10
1800
%
mA
VIN,LOW
FBOOST1
2.2
1.5
2.3
2.0
2.4
2.2
V
MHz
Boost Frequency2
FBOOST2
1.4
2.0
2.3
MHz
ATimer
-15
30
%
NTC Detection Voltage Accuracy
Vdet
-6
NTC Current
Vcurr
33
VCAP pin Maximum Output
IMAXVCA
100
Current (source)
PS
VCAP pin Maximum Output
IMAXVCA
100
Current (sink)
PS
Thermal Protection Temperature
Treg
120
Discharge Impedance
RDISC
51
Note 4. Efficiency= VOUT×ILED / (VIN × IIN) ×100
35
6
37
%
A
200
300
mA
200
300
mA
140
68
85
°C
Ω
Flash Timer Accuracy
MS1607-E-00
0.30
0.50
1500
Effi
90
-6-
%
Conditions
EN= “L”
VOUT=0V
ILEDn= 0mA
VOUT= 5.0V
VSET[2:0]= “101”, “110”
VSET[2:0]= “101”, “110”
VIN=2.5~5.5V
Ta= -30~85°C
VSET[2:0]= “001”, “010”,
“011”, “100”, “101”, “111”
VIN=2.5~5.5V
Ta= -30~85°C
ILEDn = 2A/ch
ILEDn = 0.24A/4ch
ILEDn = 1.6~2A/ch
VLEDn= 0.5V
ILEDn = 1.6~2A/ch
VLEDn = 0.6~2.2V
VIN= 2.5~5.5V
Ta= -30~85°C
ILEDn≦1.4A/ch
VLEDn = 0.6~2.2V
VIN= 2.5~5.5V
Ta= -30~85°C
VLEDn = 0.4~0.7V
VLEDn = 0.4~0.7V
VIN= 2.5~5.5V
Ta= -30~85°C
VOUT>1.0V
VOUT=4.5V
ILEDn = 0.24A
VOUT=4.5V
VIN= 2.5~5.5V
Ta= -30~85°C
VIN= 2.5~5.5V
Ta= -30~85°C
VOUT= 5.0V
VCAP= 2.3V
VOUT= 5.0V
VCAP= 2.7V
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[AP2071AEN]
■ Input Logic Characteristics
(Ta= -30  85C; VIN=2.6  5.5V), SCL, SDA, STROBE, CHARGE, EN, ADDR pins.
Parameter
Symbol
min
typ
High-Level Input Voltage
VIH
1.2
Low-Level Input Voltage
VIL
VOH
1.4
High-Level Output Voltage (SDA pin, Iout= -80A)
Low-Level Output Voltage (SDA pin, Iout= 3mA)
VOL
Input Leakage Current (SCL, SDA, DET pins)
Iin1
-2
Pull-down Resistance (STROBE, CHARGE, EN pins)
RIN
200
400
Control Interface Timing:
SCL Clock Frequency
FSCL
Bus Free Time Between Transmissions
tBUF
1.3
Start Condition Hold Time (prior to first clock pulse)
tHD:STA
0.6
Clock Low Time
tLOW
1.3
Clock High Time
tHIGH
0.6
Setup Time for Repeated Start Condition
tSU:STA
0.6
SDA Hold Time from SCL Falling (Note 5)
tHD:DAT
0
SDA Setup Time from SCL Rising
tSU:DAT
0.1
Rise Time of Both SDA and SCL Lines
tR
Fall Time of Both SDA and SCL Lines
tF
Setup Time for Stop Condition
tSU:STO
0.6
Capacitive load on bus
Cb
Pulse Width of Spike Noise Suppressed by Input Filter
tSP
0
Power-down & Reset Timing
EN Pulse Width
(Note 6)
tPD
300
Note 5. Data must be held long enough to bridge the 300ns transition time of SCL.
Note 6. The AP2071AEN can be reset by holding the EN pin= “L” upon power-up.
max
VIN
0.4
0.4
+2
700
Unit
V
V
V
V
A
kΩ
400
0.3
0.3
400
50
kHz
s
s
s
s
s
s
s
s
s
s
pF
ns
-
ns
■ Timing Diagram
VIH
SDA
VIL
tLOW
tBUF
tR
tHIGH
tF
tSP
VIH
SCL
VIL
tHD:STA
Stop
tHD:DAT
tSU:DAT
tSU:STA
tSU:STO
Start
Stop
Start
Figure 2. I2C Bus Mode Timing
tPD
EN
VIL
Figure 3. Enable & Reset Timing
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9. Functional Descriptions
The AP2071AEN integrates a boost DC-DC converter which integrates a switching FET and a synchronous
rectifier, supporting small size multilayer inductor with 2MHz switching frequency. The AP2071AEN has
four current sources to control the LED current which connected to LED1, LED2, LED3, LED4 pins. The
AP2071AEN supports five operation modes (Charge, Flash, Torch, Bypass torch and Discharge).
Mode
Function
Mode 1
Charger
Mode
Mode 2
Flash
Mode
Mode 3
Torch
Mode
Mode 4
Bypass Torch
Mode
Mode 5
Discharger
Mode
MS1607-E-00
Register Setting
CHAR bit= “1”
FLASH bit= “0”
TORCH bit= “0”
DISCH[1:0]= “00”
FLASH bit= “1”
TORCH bit= “0”
DISCH[1:0]= “00”
CHAR bit= “1”
FLASH bit= “0”
TORCH bit= “1”
DISCH[1:0]= “00”
CHAR bit= “1”
FLASH bit= “0”
TORCH bit= “1”
DISCH[1:0]= “00”
VSET[2:0]= “000”
DISCH[1:0]= “01” or “10”
-8-
Explanation
Charge EDLC.
Drive LED with flashing setting current.
Drive LED with torching setting current and
the DC-DC boost circuit operating.
Drive LED with torching setting current and
the DC-DC boost circuit not operating.
Discharge EDLC until the setting voltage
through 68 which connected to GND.
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[AP2071AEN]
■ Charging Sequence
The AP2071AEN is changed to charge mode by setting the CHARGE pin to “H” or CHAR bit to “1” if EN
pin= “H”. In this mode, an external EDLC will be charged with the default setting. Register settings are
available during this charging period. When VOUT pin reach setting voltage, DET pin (external pull-down)
will change from “H” to “L”.
Power Supply
（ VIN ）
(1)
EN pin
(2)
Resister
Setting
Set
CHARGE pin
or CHA R bit
(3)
(4)
( 5)
( 10 )
( 11 )
Vset
Vset *0.96
Vset *0.99
VOUT
5.0 V
V IN*1.12
V IN-0.1V
0.2V
(6 )
(7 )
(8 )
( 12 )
(9)
DET pin
(Open-drain)
Peak setting
Inductor
Current
Figure 4. Recommend sequence in case of charge mode
(1) The power must be supplied when the EN pin = “L”. After the power is supplied (VIN≥2.5V), the EN pin
can be set from “L” to “H”. In this case, the EN pin should be held to “L” longer than 300ns to reset the
AP2071AEN.
(2) Set registers 1ms after the EN pin is set from “L” to “H”.
(3) When the CHARGE pin is set to “H” or CHAR bit is set to “1”, the EDLC will be charged with 200mA until
the VOUT pin = 0.2V.
(4) When the VOUT reaches 0.2V, EDLC will be charged with setting current which set by CHAR[1:0] bits.
(5) When the VOUT reaches (VIN-0.1V), internal DC-DC will start operating, and the EDLC will be charged
with a maximum inductor peak current which is set by CLIMIT[2:0] bits.
(6) When the VOUT is in the range of (VIN-0.1V) ~ (VIN*120%), the EDLC is changed by PFM control.
(7) When the VOUT is more than 120% of VIN (VOUT > VIN*120%), the EDLC is charged by PWM control.
(8) When the VOUT reaches 5.0V, the EDLC is charged with the setting maximum inductor peak current by
LIMIT2-0 bits except the cases shown below.
When LIMITSEL= “0”, the inductor peak current is limit to 500mA.
When LIMITSEL= “1”, the inductor peak current is limit to 1000mA.
(9) When the VOUT reaches the setting voltage (VSET[2:0] bits), the DET pin will changed from “H” to “L”.
(10) When the VOUT reaches the setting voltage (VSET[2:0] bits), the charging circuit will be powered down. In
this period, an EDLC is discharged by 100A by internal circuits, and it is charged again when the VOUT
drops to 99% of the setting voltage.
(11) When the CHARGE pin is set to “L” and CHAR bit is set to “0”, charge circuit and DC-DC circuit are
powered down. Even if the VOUT drops to the value lower than 99% of the setting voltage,
(12) When the VOUT reaches 96% of the setting voltage (VSET[2:0] bits), the DET pin will change from “L” to
“H”.
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[AP2071AEN]
■ Flashing Sequence
The LED current is supplied from an external EDLC via the VOUT pin to the LEDs which are connected to
the LED1-4 pins. LED current can be set in the range from 200mA to 2200mA (2000mA guaranteed) by
register settings for each channel independently. Set the STROBE pin= “H” or FLASH bit= “1”, the
AP2071AEN can drive LEDs with flashing current when VOUT pin >2V.
VOUT
STROBE pin
or FLASH bit
CHARGE pin
or CHAR bit
DET pin
Setting
time
(1)
Internal Timer
Setting
(6)
LED
Current
(2)
(4)
(3)
Coil
Current
(5)
Figure 5. Flash Mode Sequence
(1) The internal safety timer starts in 120s after the STORBE pin is changed to “H” from “L” or FLASH bit
is changed to “1” from “0”.
(2) The LED current reaches setting value in 80s after the STORBE pin is changed to “H” from “L” or
FLASH bit is changed to “1” from “0”.
(3) The LED current becomes 0mA when changing the STORBE pin to “L” from “H” if the setting time of
internal timer (TIME[3:0]) is longer than “H” period of the STOBE pin.
(4) The LED current becomes 0mA when the timer is finished if the setting time of internal timer (TIME[3:0])
is shorter than “H” period of the STOBE pin.
(5) When the CHARGE pin= “L” and CHAR bit= “0”, the charging circuit and the DC-DC circuit are
powered down. In this case, the consumption current will be 100A at the VOUT pin.
(When driving LEDs in flash mode (CHARGE pin= “H” or CHAR bit= “1”), the LEDs are also supplied
by battery, so the lighting time can be extended.)
(6) LED current will be decreased when VOUT< VF of LEDs + LED1~4 voltages 0.3V (typ).
Driving LEDs with a setting current, the conditions shown below should be satisfied.
VOUT  VF 
IFLASH  TFLASH
 IFLASH  ESR  VLED(V )
Capacity
VF: LED VF which is connected to LED1~4 pins.
Capacity: EDLC capacity value
ESR: EDLC impedance+ wire impedance
IFLASH: Flashing current (4ch total value)
TFLASH: Flashing time
VLED: LED pins voltage 0.3V (typ)
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[AP2071AEN]
■ Torching Sequence
A battery can drive LEDs which is connected to the LED1~4 pins through the VOUT pin. The LED current
(torching current) can be set in the range from 10mA to 140mA by a register setting. The AP2071AEN will be
in torch mode by setting TORCH bit to “1” after setting the EN pin to “H” if the CHARGE pin is “H” or
CHAR bit is “1”. LEDs can be driven when the VOUT voltage reaches the voltage which is set by VSET[2:0]
bits.
The stable VOUT voltage is determined by input voltage (VIN), VOUT setting voltage (VSET) and LED VF.
Formula (1): In the case of VSET > VF + 0.5V > VIN*1.07
VOUT = VF + 0.5V
Formula (2): In the case of VSET > VIN*1.07 > VF + 0.5V
VOUT = VIN *1.07
Formula (3): In the case of VF > VSET → LED cannot be driven.
Set appropriate VOUT voltage for LEDs in consideration of VF value of LED.
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[AP2071AEN]
(1) Torching sequence (Formula (1): In the case of VSET > VF +0.5V > VIN*1.07)
Power Supply
（VIN）
(1)
EN pin
(2)
Resister
Setting
Set
CHARGE pin
or CHAR bit
TORCH bit
(3)
(3)
LED Current
VSET
Vset*0.99
VOUT
VF+0.5V
(4)
(5)
(6)
(4)
(5)
Inductor
Current
Figure 6. Torch Mode Sequence (Formula (1))
(1) The power must be supplied when the EN pin = “L”. After the power is supplied (VIN≥2.5V), the EN
pin can be set from “L” to “H”. In this case, the EN pin should be held to “L” longer than 300ns to reset
the AP2071AEN.
(2) Set registers 1ms after the EN pin is set from “L” to “H”.
(3) LEDs can be driven if the output voltage (VOUT) reaches VSET voltage.
LED current reaches the setting current within 80us.
(4) The internal DC-DC boosting circuit is not in operation VOUT > VF+0.5V.
(5) The internal DC-DC boosting circuit starts operation when VOUT = VF+0.5V.
(6) The LED current becomes 0mA when the CHARGE pin is “L” and CHAR bit= “0”, or setting TORCH
bit to “0”.
CHARGE pin= “H” or CHAR bit= “1”: The AP2071AEN starts charging to an external EDLC.
CHARGE pin= “L” and CHAR bit= “0”: The AP2071AEN does not charge to an external EDLC.
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[AP2071AEN]
(2) Torching sequence (Formula (2): In the case of VSET > VIN* 1.07 > VF +0.5V)
Power Supply
（VIN）
(1)
EN pin
(2)
Resister
Setting
Set
CHARGE pin
or CHAR bit
TORCH bit
(3)
(3)
LED Current
Vset
Vset*0.99
VOUT
VIN*1.07
VIN
VF+0.5V
(4)
(5)
(6)
(4)
(5)
Inductor
Current
Figure 7. Torch Mode Sequence (Formula(2))
(1) The power must be supplied when the EN pin = “L”. After the power is supplied (VIN≥2.5V), the EN
pin can be set from “L” to “H”. In this case, the EN pin should be held to “L” longer than 300ns to reset
the AP2071AEN.
(2) Set registers 1ms after the EN pin is set from “L” to “H”.
(3) LEDs can be driven if the output voltage (VOUT) reaches VSET voltage.
LED current reaches the setting current within 80us.
(4) The internal DC-DC boosting circuit is not in operation while VOUT > VIN.
(5) The internal DC-DC boosting circuit starts operation when VOUT = VIN*1.07.
(6) The LED current becomes 0mA when the CHARGE pin is “L” and CHAR bit= “0”, or setting TORCH
bit to “0”.
CHARGE pin= “H” or CHAR bit= “1”: The AP2071AEN starts charging to an external EDLC.
CHARGE pin= “L” and CHAR bit= “0”: The AP2071AEN does not charge to an external EDLC.
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2014/03
[AP2071AEN]
■ Bypass Torching Sequence
The DC-DC boost circuit can be powered off when bypass mode is set (VSET[2:0] bits= “000”), and LEDs are
driven by only battery with PMOS and current source. LED current and operating condition are same as torch
mode. The AP2071AEN cannot drive LEDs with a setting torch current if VIN < VOUT (the necessary voltage
which is for driving LEDs with the setting current).
The condition which can drive LED with the setting current is,
(typ) VIN > VF+0.5V + (inductor resistor + wire resistor + 0.27 (PMOS ON-RES)) * torching current.
Power Supply
（VIN）
(1)
EN pin
(2)
Resister
Setting
Set
CHARGE pin
or CHAR bit
TORCH bit
(3)
(3)
LED Current
VIN
VOUT
VIN*0.96
VF+0.5V
(4)
(5)
(6)
Inductor
Current
Figure 8. Bypass Torch Mode Sequence
(1) The power must be supplied when the EN pin = “L”. After the power is supplied (VIN≥2.5V), the EN
pin can be set from “L” to “H”. In this case, the EN pin should be held to “L” longer than 300ns to reset
the AP2071AEN.
(2) Set registers 1ms after the EN pin is set from “L” to “H”.
(3) LED can be driven if the output voltage (VOUT) reaches VSET*0.96 voltage.
LED current reaches the setting current within 80µs.
(4) A stable VOUT voltage in a range from VF+0.5V and VIN (typical) is output.
VOUT(typ)=
VF+0.5V+ (inductor resistance +wire resistance +0.27ohm (PMON ON-RES))*torching current
(5) Charge EDLC until VOUT=VIN.
(6) The LED current becomes 0mA when the CHARGE pin is “L” and CHAR bit= “0”, or setting TORCH
bit to “0”.
CHARGE pin= “H” or CHAR bit= “1”: The AP2071AEN starts charging to an external EDLC.
CHARGE pin= “L” and CHAR bit= “0”: The AP2071AEN does not charge to an external EDLC.
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[AP2071AEN]
■ Discharging Sequence
The AP2071AEN discharges an external EDLC by a 68Ω impedance by setting DISCH[1:0] bits = “01” or
“10”. The EDLC can be discharged to 2.5V or GND selected by resister setting. Discharge mode has priority
to any other operation modes (flash, torch and charge). When setting the AP2071AEN to discharge mode
during charge or LED driving modes, the AP2071AEN exits charge or LED driving mode forcibly.
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2014/03
[AP2071AEN]
■ Protection Function
The AP2071AEN has protection functions shown below to avoid system failures and device damages.
Protection
Condition
Under Voltage Lock
Out (UVLO)
VIN pin ≤ 2.3V
EDLC protection 1
(cell-short)
In the case of VOUT pin > 2V
and DISCH[1:0]= “11”,
VCAP pin >VOUT/2 + 30%
or
VCAP pin <VOUT/2 - 30%
EDLC protection 2
(VCAP pin open or
short to GND)
VOUT pin =1.0V~1.5V
and VCAP pin < 0.2V
EDLC protection 3
(VIN-GND short)
VIN pin =0V
and VOUT pin >2.5V
Over Thermal
Protection (OTP)
Temperature >140°C
LED open
protection
LED-GND short
protection
LED thermal
protection (Note 7)
(refer to next page)
VOUT pin-LED pin
short
Current Limit
(OCL)
(coil current limited)
VOUT-GND short
protection
In case of torch mode,
VOUT pin > 1V
LED pin < 0.2V
In case of charge mode or
torch mode,
VOUT pin > 1V
LED pin < 0.2V
In case of LED1 or LED2 or
LED3 or LED4= “1”,
NTC pin < setting voltage
Except to charge mode,
LED pin
>VOUT pin * 0.8
Device Statement
Charge, boost and current source circuits
are powered down
Address= “08H”, UVLO bit= “0”→“1”
Charge, boost and current source circuits
are powered down.
EDLC is discharged.
Address= “08H”, CAPERROR bit= “1”
DISCHSTATUS bit= “1”
Charge, boost and current source circuits
are powered down.
Discharge working
Address= “08H”, CAPERROR bit= “1”
DISCHSTATUS bit= “1”
Charge, boost and current source circuits
are powered down.
Discharge working
Charge, boost and current source circuits
are powered down.
Address= “08H”, OTP bit= “1”
Charge, boost and current source circuits
are powered down.
Address= “08H”, LEDERROR bit= “1”
Charge, boost and current source circuits
are powered down.
Address= “08H”, LEDERROR bit= “1”
Charge, boost and current source circuits
are powered down.
Address= “08H”, LEDTHRM bit= “1”
Charge, boost and current source circuits
are powered down.
Address= “08H”, LEDERROR bit= “1”
Coil current
> current set by LIMIT[1:0]
Coil current is maintained by limitation
current
In case of VOUT pin < 0.2V
Charging current= 200mA
Address= “08H”, VOUTDOWN bit= “1”
Recovering
Condition
EN pin = “L” to “H”
EN pin = “L” to “H”
EN pin = “L” to “H”
VIN pin ≥2.5V then
EN pin = “L” to “H”
EN pin = “L” to “H”
EN pin = “L” to “H”
EN pin = “L” to “H”
EN pin = “L” to “H”
EN pin = “L” to “H”
Note 7. The parasitic capacitance of the NTC pin must be below 50pF.
* When set EN = “Low” to “High”, all register will be reset.
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2014/03
[AP2071AEN]
■ LED Temperature Detection Function
The AP2071AEN can detect LED temperature with a NTC thermistor (Negative Temperature Coefficient
Thermistor) which is connected to the NTC pin. The current which flows to the NTC thermistor is 35µA.
Protection
Conditions
Device Status
LED1~4 over
NTC pin voltage
All circuits are powered down
temperature
< setting voltage
Address= “08H”, LEDTHRM
protection (Note 8)
(DET[2:0])
bit= “1”
Note 8. The parasitic capacitor of NTC pin should be lower 50pF.
Recovering Condition
Set LED1~4= “0” again
or EN pin= “off”-> “ON”
again
Example）
NTC thermistor： NCP15WM154 (150k @25C、B constant=4582, 1005 size, Murata)
NCP15WM224 (220k @25C, B constant=4582, 1005 size, Murata)
Formula: R=Ro*exp(B*(1/T-1/To))
(R: The value in the case of ambit temperature T(k)) (K: kelvin)
(Ro: The value in the case of ambit temperature To(k))
Detection Voltage (V) @typ
(set by resistor)
Detection Resistor (kΩ)
Detection Temperature (C)
(in the case of using 150kohm)
Detection Temperature (C)
(in the case of using 220kohm)
0.60
0.67
0.74
0.81
0.88
0.95
1.02
17.1
19.1
21.1
23.1
25.1
27.1
29.1
74
71
69
66
64
62
61
84
82
79
76
74
72
70
In the case of using 150kohm
Resistor (kohm)
In the case of using 220kohm
Temperature (C)
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2014/03
[AP2071AEN]
■ Typical Performance Characteristics
(VIN= 3.7V, Ta= 25 C, with Recommend Parts, inductor: MLP2016H2R2M, Cin=Cout=10µF)
1) Charging Characteristics
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2014/03
[AP2071AEN]
2) Flashing Characteristics (2A/ch ×4ch)
0.3V
3) Torching Characteristics
When the EDLC voltage is high, firstly the AP2071 drives LED by EDLC.
When EDLC voltage becomes low, the AP2071 driver drive LED from battery.
LED ON
LED ON
Note) EFFI(%) = VOUT(V)×ILED(A) ×100 / (VIN(V)×IIN(A)
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2014/03
[AP2071AEN]
■ Serial Control Interface
The AP2071AEN supports a fast-mode I2C-bus system (max: 400kHz). Pull-up resistors at the SCL and SDA
pins should be connected to VIN or less.
1. WRITE Operations
Figure 9 shows the data transfer sequence for the I2C-bus mode. All commands are preceded by a START
condition. A HIGH to LOW transition on the SDA line while SCL is HIGH indicates a START condition
(Figure 14). After the START condition, a slave address is sent. This address is 7 bits long followed by the
eighth bit that is a data direction bit (R/W). The most significant six bits of the slave address are fixed as
“011011” (Figure 10). The seventh bit is determined by ADDR pin. If the slave address matches that of the
AP2071AEN, the AP2071AEN generates an acknowledge and the operation is executed. The master must
generate the acknowledge-related clock pulse and release the SDA line (HIGH) during the acknowledge clock
pulse (Figure 15). An R/W bit value of “1” indicates that the read operation is to be executed, and “0” indicates
that the write operation is to be executed.
The second byte consists of the control register address of the AP2071AEN. The format is MSB first, and
those most significant 4-bit are fixed to zero (Figure 11). The data after the second byte contains control data.
The format is MSB first, 8bits (Figure 12). The AP2071AEN generates an acknowledge after each byte is
received. A data transfer is always terminated by a STOP condition generated by the master. A LOW to HIGH
transition on the SDA line while SCL is HIGH defines a STOP condition (Figure 14).
The AP2071AEN can perform more than one byte write operation per sequence. After receipt of the third byte
the AP2071AEN generates an acknowledge and awaits the next data. The master can transmit more than one
byte instead of terminating the write cycle after the first data byte is transferred. After receiving each data
packet the internal 5-bit address counter is incremented by one, and the next data is automatically taken into
the next address. If the address exceeds 0BH prior to generating the stop condition, the address counter will
“roll over” to 00H and the previous data will be overwritten.
The data on the SDA line must remain stable during the HIGH period of the clock. The HIGH or LOW state of
the data line can only change when the clock signal on the SCL line is LOW (Figure 16) except for the START
and STOP conditions.
S
T
A
R
T
SDA
S
T
O
P
R/W="0"
Slave
S Address
Sub
Address(n)
A
C
K
Data(n)
A
C
K
Data(n+1)
A
C
K
Data(n+x)
A
C
K
A
C
K
P
A
C
K
Figure 9. Data Transfer Sequence
0
1
1
0
1
1
ADDR
R/W
Figure 10. The First Byte (Do not change the ADDR pin in case of writing)
0
0
0
0
A3
A2
A1
A0
D1
D0
Figure 11. The Second Byte
D7
D6
D5
D4
D3
D2
Figure 12. Byte Structure After The Second Byte
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2014/03
[AP2071AEN]
2. READ Operations
Set the R/W bit = “1” for the READ operation of the AP2071AEN. The master can read the next address’s data
by generating an acknowledge instead of terminating the write cycle after the receipt of the first data word.
After receiving each data packet the internal 5-bit address counter is incremented, and the next data is
automatically taken into the next address. If the address exceeds 08H prior to generating stop condition, the
address counter will “roll over” to 00H and the previous data will be overwritten.
The AP2071AEN supports one basic read operation: Random Address Read.
2-1. Random Address Read
The random read operation allows the master to access any memory location at random. Prior to issuing the
slave address with the R/W bit “1”, the master must first perform a “dummy” write operation. The master
issues start request, a slave address (R/W bit = “0”) and then the register address to read. After the register
address is acknowledged, the master immediately reissues the start request and the slave address with the R/W
bit “1”. The AP2071AEN then generates an acknowledge, 1 byte of data and increments the internal address
counter by 1. If the master does not generate an acknowledge to the data but generates a stop condition, the
AP2071AEN ceases transmission.
S
T
A
R
T
SDA
S
T
A
R
T
R/W="0"
Slave
S Address
Sub
Address(n)
A
C
K
Slave
S Address
A
C
K
S
T
O
P
R/W="1"
Data(n)
A
C
K
Data(n+1)
MA
AC
S K
T
E
R
Data(n+x)
MA
AC
S
T K
E
R
MA
AC
S
T K
E
R
P
MN
A A
S
T C
E K
R
Figure 13. Random Address Read
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2014/03
[AP2071AEN]
SDA
SCL
S
P
start condition
stop condition
Figure 14. START and STOP Conditions
DATA
OUTPUT BY
TRANSMITTER
not acknowledge
DATA
OUTPUT BY
RECEIVER
acknowledge
SCL FROM
MASTER
2
1
8
9
S
clock pulse for
acknowledgement
START
CONDITION
Figure 15. Acknowledge on the I2C-Bus
SDA
SCL
data line
stable;
data valid
change
of data
allowed
Figure 16. Bit Transfer on the I2C-Bus
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2014/03
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[AP2071AEN]
10. Register Map
Addr
00H
01H
02H
03H
04H
05H
06H
07H
Register Name
LED Setting1
LED Setting2
LED Setting3
LED Setting4
LED Setting5
Charge Setting
Other Setting
Mode Control
08H
Fault/Status
D7
LED1F4
LED2F4
LED3F4
LED4F4
LED4
LIMIT2
D6
LED1F3
LED2F3
LED3F3
LED4F3
LED3
LIMIT1
D5
LED1F2
LED2F2
LED3F2
LED4F2
LED2
LIMIT0
D4
LED1F1
LED2F1
LED3F1
LED4F1
LED1
CHAR1
UVLO
DISCH1
VOUT
DOWN
D3
LED1F0
LED2F0
LED3F0
LED4F0
TIME3
CHAR0
LIMITSEL
DISCH0
CAP
ERROR
D2
LED1T2
LED2T2
LED3T2
LED4T2
TIME 2
VSET2
NTC2
CHAR
LED
ERROR
D1
LED1T1
LED2T1
LED3T1
LED4T1
TIME 1
VSET 1
NTC1
FLASH
LED
THRM
D0
LED1T0
LED2T0
LED3T0
LED4T0
TIME 0
VSET 0
NTC0
TORCH
D4
LED1F1
LED2F1
LED3F1
LED4F1
R/W
1
D3
LED1F0
LED2F0
LED3F0
LED4F0
R/W
1
D2
LED1T2
LED2T2
LED3T2
LED4T2
R/W
1
D1
LED1T1
LED2T1
LED3T1
LED4T1
R/W
0
D0
LED1T0
LED2T0
LED3T0
LED4T0
R/W
0
OTP
Note) The access of Addr “09H” is prohibited.
Addr
00H
01H
02H
03H
Register Name
LED Setting1
LED Setting2
LED Setting3
LED Setting4
R/W
Default
D7
LED1F4
LED2F4
LED3F4
LED4F4
R/W
0
D6
LED1F3
LED2F3
LED3F3
LED4F3
R/W
1
D5
LED1F2
LED2F2
LED3F2
LED4F2
R/W
1
LEDnT0, LEDnT1, LEDnT2: Torch current setting for LEDs that connect to LED1~4.
LEDnF0, LEDnF1, LEDnF2, LEDnF3, LEDnF4: Flash current setting for LEDs that connect to LED1~4.
(The current setting of each channel is independent.)
Table 1. Torch Mode LED Current Setting (unit: mA)
LEDnT2
LEDnT1
LEDnT0
0
0
0
0
0
0
1
1
0
1
0
1
Torch
(1ch)
10
20
40
60
LEDnT2
LEDnT1
LEDnT0
1
1
1
1
0
0
1
1
0
1
0
1
Torch
(1ch)
80
100
120
140
Table 2. Flash Mode LED Current Setting (unit: mA)
LEDnF4
LEDnF3
LEDnF2
LEDnF1
LEDnF0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Flash
(1ch)
200
400
600
800
1000
1200
1400
1600
1625
1650
1675
1700
1725
1750
1775
1800
LEDnF4
LEDnF3
LEDnF2
LEDnF1
LEDFn0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
MS1607-E-00
Flash
(1ch)
1825
1850
1875
1900
1925
1950
1975
2000
2025
2050
2075
2100
2125
2150
2175
2200
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[AP2071AEN]
Addr
04H
Register Name
LED Setting5
R/W
Default
D7
LED4
R/W
0
D6
LED3
R/W
0
D5
LED2
R/W
0
D4
LED1
R/W
0
D3
TIME3
R/W
1
D2
TIME2
R/W
1
TIME0, TIME1, TIME2, TIME3: On-time setting for LED1~4 in Flash mode
Table 3. LED On-time Setting
TIME3 TIME2 TIME1 TIME0
Time
TIME3 TIME2 TIME1
0
0
0
0
5ms
1
0
0
0
0
0
1
10ms
1
0
0
0
0
1
0
15ms
1
0
1
0
0
1
1
20ms
1
0
1
0
1
0
0
25ms
1
1
0
0
1
0
1
30ms
1
1
0
0
1
1
0
35ms
1
1
1
0
1
1
1
40ms
1
1
1
LED1, LED2, LED3, LED4: LED1~4 ON/OFF control.
Addr
05H
Register Name
Charge Setting
R/W
Default
D7
LIMIT2
R/W
0
D6
LIMIT1
R/W
0
D5
LIMIT0
R/W
0
D1
TIME1
R/W
0
TIME0
0
1
0
1
0
1
0
1
D0
TIME0
R/W
1
Time
50ms
60ms
70ms
80ms
90ms
100ms
150ms
200ms
0: ON; 1: OFF
D4
CHAR1
R/W
0
D3
CHAR0
R/W
0
D2
VSET2
R/W
0
D1
VSET1
R/W
0
D0
VSET0
R/W
1
VSET0, VSET1, VSET2: VOUT pin voltage setting
The DET pin will change from “L” to “H” when VOUT = setting voltage (VSET [2:0]). If a flash is not
lighten for a certain time after the voltage of an external EDLC (VOUT) reaches a setting value, the
VOUT voltage is gradually reduced and the AP2701AEN will start charging EDLC when the VOUT
voltage drops until 0.99V*VOUT.
Table 4. VOUT pin Voltage Setting
VSET2
VSET1
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
VSET0
0
1
0
1
0
1
0
1
VOUT
VIN (Bypass Mode)
4.40
4.80
5.00
5.25
5.35
5.45
4.07
* There is a possibility that VOUT exceeds the tolerate voltage of EDLC when setting the VOUT pin
voltage to 5.45V (VSET [2:0]= “110”).
CHAR1, CHAR0: Charge Current Setting for EDLC (VOUT=0.2V~ (VIN-0.1V))
The charge current will be 200mA when the VOUT voltage is less than 0.2V.
Table 5. Charge Current Setting
CHG1
CHG0
Current
0
0
300mA
0
1
400mA
1
0
500mA
1
1
600mA
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[AP2071AEN]
LIMIT2, LIMIT1, LIMIT0: Inductor Limit Current Setting for during DC-DC Operation
*The setting of LIMIT2-0 = “110” or “111” is prohibited.
Table 6. Inductor Limit Current Setting
LIMITSEL
LIMIT2
LIMIT1
LIMIT0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Addr Register Name
06H Other Setting1
R/W
Default
D7
D6
D5
D4
R/W
1
R/W
1
R/W
1
R/W
0
Current (mA)
VOUT≤5V
400
500
600
800
1000
1500
400
500
600
800
1000
1500
-
D3
LIMITSEL
R/W
0
Current (mA)
VOUT>5V
400
500
500
500
500
500
400
500
600
800
1000
1000
-
D2
NTC2
R/W
0
D1
NTC1
R/W
0
D0
NTC0
R/W
0
NTC0, NTC1, NTC2: NTC pin Detection Voltage Setting (The NTC pin supplies 35µA (typ.) current source.)
* Connect a thermistor resistance to the NTC pin. The AP2701AEN powers all circuit
down when the voltage at the NTC pin drops under the setting value shown below as
it is determined that LEDs are being heated. If this function is unnecessary, set
DET[2:0] “000” to turn off the function. (The default setting is OFF.)
Table 7. NTC Detection Voltage Setting
NTC2
NTC1
NTC0
NTC Pin Detection Voltage
0
0
0
off
0
0
1
0.60V
0
1
0
0.67V
0
1
1
0.74V
1
0
0
0.81V
1
0
1
0.88V
1
1
0
0.95V
1
1
1
1.02V
LIMITSEL: Peak Limit Setting of the Inductor when VOUT > 5V
Refer to Note 6
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2014/03
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[AP2071AEN]
Addr
07H
Register Name
Other Setting2
R/W
Default
D7
D6
D5
R/W
0
R/W
0
R/W
0
TORCH: LED ON/OFF setting in the case of torch mode.
(CHAR bit should be set to “1”)
FLASH: LED ON/OFF setting in the case of flash mode.
CHAR: Charge EDLC setting.
0: OFF
1: ON
D4
DISCH1
R/W
1
D3
DISCH0
R/W
1
D2
CHAR
R/W
0
0: OFF；
1: ON
0: OFF；
1: ON
D1
FLASH
R/W
0
D0
TORCH
R/W
0
DISCH1, DISCH0: Discharge EDLC(discharge through 68 which connected to GND )
Table 8. Discharge Setting
DISCH1
DISCH0
0
0
0
1
1
0
1
1
VOUT pin
No discharge
EDLC Protection 1 invalid
GND
2.5V
No discharge
EDLC protection 1 valid
Table 9. Mode Setting
DISCH1
bit
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
DISCH0
bit
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
CHAR
bit
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
FLASH
bit
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
MS1607-E-00
TORCH
bit
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Recommend
Mode
Y
Y
Y
Y
Y
-
Standby
Standby
Flash
Flash
Charge
Torch
Flash
Flash
Y
Discharge
Y
Discharge
Y
Y
Y
Y
Y
-
Standby
Standby
Flash
Flash
Charge
Torch
Flash
Flash
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[AP2071AEN]
DISCH1, DISCH0: EDLC Discharging Setting (Discharge to GND via a 68Ω internal resistor.)
Table 10. Discharging Setting
DISCH1 DISCH0
Addr
Register Name
08H
Fault/Status
0
0
0
1
1
0
1
1
R/W
Default
D7
D6
VOUT pin
Not discharge
EDLC Protection 1 is invalid.
GND
2.5V
Not discharge
EDLC Protection 1 is valid.
D5
UVLO
RD
0
RD
0
RD
0
D4
VOUT
DOWN
RD
0
D3
CAP
ERROR
RD
0
D2
LED
ERROR
RD
0
D1
LED
THRM
RD
0
D0
OTP
RD
0
OTP: Indicate Over Heat Protection Status
0: Not In Operation
1: Operation
LEDTHRM: Indicate Over Temperature Protection Status
0: Not In Operation
1: Operation
LEDERROR: LED Error Status for LRD1~4
0: Normal Operation
1: Error Status
CAPERROR: EDLC Error status
0: Normal Operation
1: Error Status
VOUTDOWN: VOUT Status
0: VOUT > 0.2V
1: VOUT ≤ 0.2V
UVLO: Indicate UVLO Protection Status
0: Not In Operation
1: Operation
MS1607-E-00
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[AP2071AEN]
11. Recommended External Circuits
2.5V~5.5V
Cin
VIN
SW
OVP
Slop
e
Compensatio
n
Back Gate
Control
Oscillator
22MHz
.0
VOUT
Cout
UVLO
∑
CONTROL
LOGIC
PWM
COMPARATOR
Control
VCAP
VIN
Current
Limit
EDLC
NTC
DET
Error Amp
NTC
DET
C
P
U
SCL
LED1
2
SDA
I C I/F
& Control
STROBE
LED2
Current
&Control
CHARGE
LED3
EN
LED4
AGND PGND
GND1 GND2 GND3 GND4 GND5 GND6
ADDR
■ Recommended Parts
Table 11. Recommend External Parts Example
Item
Inductor
Symble
Value
L
2.2µH
10µF
Condenser
Cin, Cout
4.7µF
Type(example)
LQM2MPN2R2
MLP2016S2R2
MDT2012-CH2R2N
C1608X5R1A106M
C1608X5R1E106M
GRM188B31A106M
GRM188R61E106M
C1608JB0J475K
C1608JB0J475M
Size
2.0×1.6 mm
2.0×1.6 mm
2.0×1.25 mm
TDK
1.6×0.8 mm
Murata
TDK
1.6×0.8 mm
GRM188B30J475K
NTC RES
EDLC
150kΩ or 220kΩ or 470kΩ
RNTC
marker
Murata
TDK
TOKO
Murata
-
350mF,470mF
-
-
Murata
350mF,500mF
-
-
TDK
1F
2.7DMA1M6.3x30
-
Rubycon
-
Note 9. All ground should be connected to the same ground plane.
Note 10. The inductor should be placed as close as possible to the AP2071AEN.
Note 11. Capacitors should be placed as close as possible to the AP2071AEN. Low ESR (Equivalent Series
Resistance) capacitors are recommended.
MS1607-E-00
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[AP2071AEN]
12. Package
■ Outline Dimensions
24pin HQFN（unit：mm）
4.0  0.1
2.5 ref
0.45 ref
24
18
1
4.0  0.1
2.７0±0.10
INDEX AREA
C 0.35
2.70±0.10
0.25 ref
Exposed Pad
6
0.40  0.10
12
0.5
0.25  0.05
0.75±0.05
0.10 M
★)
0.20 ref
Please connect “Exposed Pad” to ground
0.00 – 0.05
■ PCB layout
（unit：mm）
24
1
0.30
0.50
0.65
2.7
0.2
■ Marking
（1） Show No1 pin
XXXX
(2)
YWW A
(1)
(3)
(4)
(5)
（2） Product name : “2071”
（3） Manufacture year (example: 2013? “3")
（4） Manufacture week
（5） Administration number
MS1607-E-00
2014/03
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[AP2071AEN]
13. Revise History
Date (YY/MM/DD)
14/03/07
Revision
00
Page
Contents
First edition
MS1607-E-00
2014/03
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[AP2071AEN]
IMPORTANT NOTICE
0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the
information contained in this document without notice. When you consider any use or application of
AKM product stipulated in this document (“Product”), please make inquiries the sales office of
AKM or authorized distributors as to current status of the Products.
1. All information included in this document are provided only to illustrate the operation and
application examples of AKM Products. AKM neither makes warranties or representations with
respect to the accuracy or completeness of the information contained in this document nor grants any
license to any intellectual property rights or any other rights of AKM or any third party with respect
to the information in this document. You are fully responsible for use of such information contained
in this document in your product design or applications. AKM ASSUMES NO LIABILITY FOR
ANY LOSSES INCURRED BY YOU OR THIRD PARTIES ARISING FROM THE USE OF SUCH
INFORMATION IN YOUR PRODUCT DESIGN OR APPLICATIONS.
2. The Product is neither intended nor warranted for use in equipment or systems that require
extraordinarily high levels of quality and/or reliability and/or a malfunction or failure of which may
cause loss of human life, bodily injury, serious property damage or serious public impact, including
but not limited to, equipment used in nuclear facilities, equipment used in the aerospace industry,
medical equipment, equipment used for automobiles, trains, ships and other transportation, traffic
signaling equipment, equipment used to control combustions or explosions, safety devices, elevators
and escalators, devices related to electric power, and equipment used in finance-related fields. Do
not use Product for the above use unless specifically agreed by AKM in writing.
3. Though AKM works continually to improve the Product’s quality and reliability, you are responsible
for complying with safety standards and for providing adequate designs and safeguards for your
hardware, software and systems which minimize risk and avoid situations in which a malfunction or
failure of the Product could cause loss of human life, bodily injury or damage to property, including
data loss or corruption.
4. Do not use or otherwise make available the Product or related technology or any information
contained in this document for any military purposes, including without limitation, for the design,
development, use, stockpiling or manufacturing of nuclear, chemical, or biological weapons or
missile technology products (mass destruction weapons). When exporting the Products or related
technology or any information contained in this document, you should comply with the applicable
export control laws and regulations and follow the procedures required by such laws and regulations.
The Products and related technology may not be used for or incorporated into any products or
systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws
or regulations.
5. Please contact AKM sales representative for details as to environmental matters such as the RoHS
compatibility of the Product. Please use the Product in compliance with all applicable laws and
regulations that regulate the inclusion or use of controlled substances, including without limitation,
the EU RoHS Directive. AKM assumes no liability for damages or losses occurring as a result of
noncompliance with applicable laws and regulations.
6. Resale of the Product with provisions different from the statement and/or technical features set forth
in this document shall immediately void any warranty granted by AKM for the Product and shall not
create or extend in any manner whatsoever, any liability of AKM.
7. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior
written consent of AKM.
MS1607-E-00
2014/03
- 31 -