DIODES AP7165

AP7165
600mA LOW DROPOUT REGULATOR WITH POK
General Description
Features
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Wide input voltage range: 2.2V – 5.5V
300mV very low dropout at 500mA load
Very low quiescent current (IQ): 125µA typical
Adjustable output voltage range: 0.8V to 5.0V
Very fast transient response
High PSRR
Accurate voltage regulation
Current limiting and short circuit protection
Thermal shutdown protection
Stable with any type output capacitor ≥ 4.7µF
Ambient temperature range -40ºC to 85°C
DFN3030-10: Available in “Green” Molding Compound
(no Br, Sb)
Lead Free Finish/RoHS Compliant (Note 1)
The AP7165 is a 600mA, adjustable output voltage, ultra-low
dropout linear regulator. The device includes pass element, error
amplifier, band-gap reference, current limit and thermal shutdown
circuitry. The device is turned on when EN pin is set to logic high
level.
A Power-OK (POK) output is available for power
sequence control.
The characteristics of the low dropout voltage and low quiescent
current make it suitable for low to medium power applications, for
example, laptop computers, audio and video applications, and
battery powered devices. The typical quiescent current is
approximately 125µA.
Built-in current-limit and thermal-shutdown functions prevent IC
from damage in fault conditions. The AP7165 is available in
DFN3030-10 package.
Applications
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Servers and laptops
Smart phone and PDA
MP3/MP4
Bluetooth headset
Low and medium power applications
FPGA and DSP core or I/O power
Ordering Information
AP 7165 - XX X X
Note:
Lead Free
Packing
FN : DFN3030-10
G : Green
-7 : Taping
1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Device
AP7165-FN
Note:
Package
Package
Code
FN
Packaging
(Note 2)
DFN3030-10
7” Tape and Reel
Quantity
Part Number Suffix
3000/Tape & Reel
-7
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AP7165 Rev. 1
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OCTOBER 2007
© Diodes Incorporated
AP7165
600mA LOW DROPOUT REGULATOR WITH POK
Pin Assignments
( Top View )
IN
1
10
OUT
IN
2
9
OUT
POK
3
8
FB
NC
4
7
NC
EN
5
6
GND
DFN3030-10
Pin Descriptions
Name
Pin No.
IN
1, 2
POK
EN
GND
FB
3
5
6
8
OUT
9, 10
NC
4, 7
Description
Voltage input pins, to be tied together externally. Bypass to ground
through at least 1 µF capacitor.
Power-OK output, active-high open-drain
Enable input, active high
Ground
Output feedback
Voltage output pins, to be tied together externally. Bypass to
ground through at least 4.7 µF ceramic capacitor
No connection
Block Diagram
IN
EN
OUT
Gate
Driver
Current Limit
and Thermal
Shutdown
FB
0.8V
POK
0.744V
GND
AP7165 Rev. 1
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© Diodes Incorporated
AP7165
600mA LOW DROPOUT REGULATOR WITH POK
Typical Application Circuit
VIN
VOUT
IN
OUT
100kOhm
R1
AP7165
1µF
10µF
FB
POK
R2
Enable
EN
GND
⎛
R ⎞
VOUT = VREF ⎜⎜1 + 1 ⎟⎟
⎝ R2 ⎠
Absolute Maximum Ratings
Symbol
Parameter
ESD HBM
Human Body Model ESD Protection
ESD MM
Machine Model ESD Protection
VIN
Input Voltage
OUT, FB, POK, EN Voltage
Continuous Load Current
TJmax
Note:
Storage Temperature Range
PD
Power Dissipation (Note 3,5)
Unit
4
300
KV
7
V
VIN + 0.3
V
V
Internal Limited
Maximum Junction Temperature
TST
Ratings
DFN3030-10
150
°C
-65 ~150
°C
3.0
W
3. Ratings apply to ambient temperature at 25°C
Recommended Operating Conditions
Symbol
VIN
IOUT
TA
AP7165 Rev. 1
Parameter
Input voltage
Output Current
Operating Ambient Temperature
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Min
2.2
0
-40
Max
5.5
600
85
Unit
V
mA
°C
OCTOBER 2007
© Diodes Incorporated
AP7165
600mA LOW DROPOUT REGULATOR WITH POK
Electrical Characteristics
o
(TA = 25 C, VIN = VOUT +1V, CIN = 1µF, COUT = 10µF, VEN = VIN, unless otherwise stated)
Symbol
IQ
ISHDN
VDropout
VREF
IFB
VOUT
Parameter
Input Quiescent Current
Input Shutdown Current
Dropout Voltage
FB reference voltage
FB leakage
Output Voltage Total Accuracy
ΔVOUT
/ VOUT Line Regulation
ΔVIN
ΔVOUT / VOUT
tST
PSRR
Power Supply Rejection Ratio
ILIMIT
Current limit
Short-circuit Current
EN Input Logic Low Voltage
EN Input Logic High Voltage
EN Input leakage
POK output low voltage
Output voltage (rising) POK
threshold
Output voltage POK hysteresis
VPOK_TH_UP
VPOK_Hys
POK deglitch
POK leakage current
IPOK_LK
Thermal shutdown threshold
TSHDN
Thermal shutdown hysteresis
THYS
Thermal Resistance
θJA
Junction-to-Ambient
Note:
Min
⎯
-1
⎯
-2.5
VIN = VOUT +1V to 5.5V,
IOUT = 1mA
Load Regulation
Start-up Time, from EN high to
POK high
ISHORT
VIL
VIH
IEN
VOL
Test Conditions
IOUT = 0
VEN = 0V, IOUT = 0 (Note 4)
VOUT ≥ 1.5V, IOU T = 500mA
IOUT from 1mA to 500mA
VEN = 0V to 2.0V, IOUT =
100mA, VIN = 3.3V
1kHz, VIN = 3.3V, VOUT =
1.2V, IOUT = 0mA
VOUT = 1.8V, ROUT = 0.5Ω
VIN = 3.3V, VOUT < 0.2V
Typ.
125
0.01
300
0.8
0.01
Max
170
1
400
1
2.5
0.015
-1.0
600
Unit
µA
µA
mV
V
µA
%
%/V
1.0
%
170
µs
60
dB
950
380
0.01
100
1
200
mA
mA
V
V
µA
mV
87%
92%
97%
Vref
⎯
4%
150
0.01
150
25
1
Vref
µs
µA
°C
°C
0.4
VEN = 0V or 5.5V
Sink 2mA
FB (or OUT for fixed
version) rising
VIN = 3.3V, VOUT = 1.2V
VPOK = 5.5V
DFN3030-10 (Note 5)
1.4
⎯
40
o
C/W
4. POK pin must be disconnected from IN pin.
5. Test condition for DFN3030-10: Device mounted on FR-4 2-layer board, 2oz copper, with minimum recommended pad on top layer and 6 vias to
bottom layer 1.0”x1.5” ground plane.
AP7165 Rev. 1
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© Diodes Incorporated
AP7165
600mA LOW DROPOUT REGULATOR WITH POK
Typical Performance Characteristics
Output Voltage vs. Temperature
Output Voltage vs. Temperature
1.90
3.40
Vout=1.8V
Output Voltage (V)
Output Voltage (V)
Vout=3.3V
3.35
3.30
3.25
3.20
1.85
1.80
1.75
1.70
-50
-25
0
25
50
75
100
125
-50
-25
Temperature (oC)
50
75
100
125
Quiescent Current vs. Input Voltage
VOUT=1.8V
VOUT=1.2V
170
Quiescent Current (uA)
Quiescent Current (uA)
25
Temperature (oC)
Quiescent Current vs. Input Voltage
170
0
160
150
140
130
120
110
Iout=0mA
100
Iout=300mA
160
150
140
130
120
Iout=0mA
110
Iout=300mA
100
Iout=600mA
90
90
2.5
2.5
3.0
3.5
4.0
4.5
5.0
3.0
5.5
3.5
4.0
4.5
5.0
5.5
Input Voltage (V)
Input Voltage (V)
Quiescent Current vs. Temperature
Quiescent Current vs. IOUT
VOUT=1.8V
150
140
130
120
110
100
VIN=2.2V, Vout=1.0V
90
VIN=3.3V, Vout=1.2V
VIN=3.3V, Vout=1.8V
80
VIN=5.0V, Vout=3.3V
Quiescent Current (uA)
Quiescent Current (uA)
150
70
140
130
120
110
VIN=2.5V
VIN=3.3V
100
-50
-25
0
25
50
75
100
125
o
AP7165 Rev. 1
0.0
0.1
0.2
0.3
0.4
0.5
0.6
IOUT (A)
Temperature ( C)
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AP7165
600mA LOW DROPOUT REGULATOR WITH POK
Typical Performance Characteristics
(Continued)
Reference Voltage vs. Temperature
Dropout Voltage vs. IOUT
VOUT=3.3V
400
Dropout Voltage (mV)
Reference Voltage (V)
0.810
0.805
0.800
0.795
0.790
Vin=2.2V
Vin=3.3V
0.785
Vin=5.5V
25°C
350
90°C
-45°C
300
250
200
150
100
50
0
0.780
0
-50
-25
0
25
50
75
100
100
200
400
500
600
IOUT (mA)
o
Temperature ( C)
Load Regulation
Line Regulation
VOUT=1.2V, IOUT=1mA
VIN=2.5V, VOUT=1.2V
0.10
0.6
Change in VOUT (%)
Change in VOUT (%/V)
300
125
0.05
0.00
-0.05
25°C
25°C
0.5
85°C
-40°C
0.4
0.3
0.2
0.1
85°C
-40°C
0.0
0.0
-0.10
2.5
3.0
3.5
4.0
4.5
5.0
0.1
0.2
5.5
0.3
0.4
0.5
0.6
IOUT (A)
VIN (V)
PSRR (VOUT=1.2V)
Current Limit vs. Temperature
1.08
-40
-50
1.04
PSRR (dB)
Current Limit (A)
1.06
1.02
1.00
0.98
0.96
-60
-70
-80
0.94
Vin=2.8V, Vout=1.8V
0.92
Vin=3.3V, Vout=1.8V
0.90
-50
-25
0
25
50
75
100
o
1000
10000
100000
Frequency (Hz)
Temperature ( C)
AP7165 Rev. 1
-90
100
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AP7165
600mA LOW DROPOUT REGULATOR WITH POK
Typical Performance Characteristics
(Continued)
Line Transient Response
Line Transient Response
VIN =3.3V to 4.4V
COUT =10uF (Ceramic)
IOUT =200mA
VIN =4.4V to 3.3V
COUT =10uF (Ceramic)
IOUT =200mA
VIN
1V/div
VIN
1V/div
VOUT
50mV/div
VOUT
50mV/div
Time (50us/div)
Time (50us/div)
Output Load Transient Response (VOUT=1.2V)
Output Load Transient Response (VOUT=1.8V)
COUT=470uF (electrolytic)
COUT=470uF (electrolytic)
COUT=10uF (Ceramic)
VOUT
COUT=10uF (Ceramic)
50mV/div
VOUT
50mV/div
COUT=1uF (Ceramic)
COUT=1uF (Ceramic)
600mA
600mA
IOUT
IOUT
1A/us
200mA/div
1A/us
200mA/div
50mA
50mA
Time (100us/div)
Time (100us/div)
Start-up Time (VOUT=1.2V, IOUT=0.1A)
Start-up Time (VOUT=1.2V, IOUT=600mA)
VEN
2V/div
VEN
2V/div
COUT=10uF (Ceramic)
COUT=10uF (Ceramic)
VOUT
1V/div
VOUT
1V/div
VPOK
2V/div
VPOK
2V/div
Time (50us/div)
Time (50us/div)
AP7165 Rev. 1
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AP7165
600mA LOW DROPOUT REGULATOR WITH POK
Typical Performance Characteristics
(Continued)
Short Circuit Current vs. Tem perature
VOUT=1.2V
420
VOUT=1.2V
500
Short Circuit Current
(mA)
Short Circuit Current (mA)
Short Circuit Current vs. Input Voltage
410
450
400
390
400
380
370
350
360
300
350
2.0
2.5
3.0
3.5
4.0
4.5
-50
5.0
-25
0
25
50
75
o
Tem perature ( C)
Input Voltage (V)
Current Limit Protection (VOUT=1.8V)
Current Limit & Short Circuit Protection
(VOUT=0.8V)
VOUT
500mV/div
VOUT
500mV/div
IOUT
500mA/div
Current Limit Protection
IOUT
1A/div
Short Circuit Protection
Time (50us/div)
Time (500us/div)
Short Circuit Recovery (VOUT=1.8V)
Short Circuit Protection (VOUT=1.8V)
VOUT
500mV/div
VOUT
500mV/div
Current Limit Protection
IOUT
500mA/div
Short Circuit Protection
IOUT
500mA/div
Time (2ms/div)
AP7165 Rev. 1
Time (50us/div)
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AP7165
600mA LOW DROPOUT REGULATOR WITH POK
Application Note
Input Capacitor
A 1μF ceramic capacitor is recommended to connect
between IN and GND pins to decouple input power
supply glitch and noise. The amount of the capacitance
may be increased without limit. A lower ESR (Equivalent
Series Resistance) capacitor allows the use of less
capacitance, while higher ESR type requires more
capacitance. This input capacitor should be located as
close as possible to the device to assure input stability
and less noise. For PCB layout, a wide copper trace is
required for both IN and GND.
Output Capacitor
The output capacitor is required to stabilize and help the
transient response of the LDO. The AP7165 is designed
to have excellent transient response for most
applications with a small amount of output capacitance.
The AP7165 is stable for all available types and values
of output capacitors ≥ 4.7μF. The device is also stable
with multiple capacitors in parallel, which can be of any
type of value. Additional capacitance helps to reduce
undershoot and overshoot during transient. This
capacitor should be placed as close as possible to OUT
and GND pins for optimum performance.
Adjustable Operation
The AP7165 provides output voltage from 0.8V to 5.0V
through external resistor divider as shown below.
VIN
VOUT
IN
CIN
100kOhm
OUT
R1
AP7165
POK
COUT
EN
GND
The output voltage is calculated by:
⎛
R ⎞
VOUT = VREF ⎜⎜1 + 1 ⎟⎟
⎝ R2 ⎠
Where VREF=0.8V (the internal reference voltage).
AP7165 Rev. 1
⎛V
⎞
R 1 = R 2 ⎜⎜ OUT − 1⎟⎟
⎝ VREF
⎠
To maintain the stability of the internal reference voltage,
R2 needs to be kept smaller than 250kΩ.
No Load Stability
Other than external resistor divider, no minimum load is
required to keep the device stable. The device will
remain stable and regulated in no load condition.
ENABLE/SHUTDOWN Operation
The AP7165 is turned on by setting the EN pin high, and
is turned off by pulling it low. If this feature is not used,
the EN pin should be tied to IN pin to keep the regulator
output on at all time. To ensure proper operation, the
signal source used to drive the EN pin must be able to
swing above and below the specified turn-on/off voltage
thresholds listed in the Electrical Characteristics section
under VIL and VIH.
POWER-OK
The Power-Ok (POK) pin is an active high open-drain
output. It can be connected to any 5.5V or lower rail
through an external pull-up resistor.
The
recommended sink current of POK pin is up to 4mA, so
the pull-up resistor for POK should be in the range of
10kΩ to 1MΩ. If output voltage monitoring is not needed,
the POK pin can be left floating.
Current Limit Protection
When output current at OUT pin is higher than current
limit threshold, the current limit protection will be
triggered and clamp the output current to approximately
950mA (600A min) to prevent over-current and to
protect the regulator from damage due to overheating.
FB
R2
Enable
Rearranging the equation will give the following
equation to find the approximate resistor divider values:
Short Circuit Protection
When OUT pin is short-circuited to GND or OUT
voltage is less than 200mV, short circuit protection
be triggered and clamp the output current
approximately 380mA. This feature protects
regulator from over-current and damage due
overheating.
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pin
will
to
the
to
OCTOBER 2007
© Diodes Incorporated
AP7165
600mA LOW DROPOUT REGULATOR WITH POK
Application Note
(Continued)
thermal plane that is connected to the thermal pad is
critical to avoid thermal shutdown and ensuring reliable
operation. Power dissipation of the device depends on
input voltage and load conditions and can be calculated
by:
Low Quiescent Current
The AP7165, consuming only around 125µA for all input
range and output loading, provides great power saving
in portable and low power applications.
PD = ( VIN − VOUT )xIOUT
Wide Output Range
The AP7165, with a wide output range of 0.8V to 5.0V,
provides a versatile solution for many portable and low
power applications.
The AP7165 is available in the DFN3030-10 package
with exposed pad, which is the primary conduction path
for heat to the printed circuit board (PCB). The pad can
be connected to ground or be left floating; however, to
ensure the device will not overheat, it should be
attached to an appropriate amount of copper PCB area.
Thermal Shutdown Protection
Thermal protection disables the output when the
junction temperature rises to approximately +150°C,
allowing the device to cool down. When the junction
temperature reduces to approximately +125°C the
output circuitry is enabled again. Depending on power
dissipation,
thermal
resistance,
and
ambient
temperature, the thermal protection circuit may cycle on
and off. This cycling limits the heat dissipation of the
regulator, protecting it from damage due to overheating.
However, the maximum power dissipation that can be
handled by the device depends on the maximum
junction to ambient thermal resistance, maximum
ambient temperature, and maximum device junction
temperature, which can be approximated by the
equation below:
PD ([email protected] TA ) =
Power Dissipation
The device power dissipation and proper sizing of the
( +145°C − TA )
R θJA
Marking Information
(1) DFN3030-10
( Top View )
XX
YMX
Part Number
AP7165
AP7165 Rev. 1
XX : B2 : AP7165
Y : Year 0~9
M : Month A~L
X : G : Green
Package
DFN3030-10
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Identification Code
B2
OCTOBER 2007
© Diodes Incorporated
AP7165
600mA LOW DROPOUT REGULATOR WITH POK
Package Information
(All Dimensions in mm)
(1) DFN3030-10
0.15Typ.
0/0.05
Seating Plane
Side View
2X-
0.25 A
0.08 C
0.57/0.60
TOP MARK
0.10 C
C
2.9/3.1
2.3/2.5
B
A
R0
.30
0
0.25/0.55
1.5/1.7
2.9/3.1
(Pin #1 ID)
2X-
0.25 B
0.375Typ.
0.50Typ.
0.2/0.3
0.10
C A B
Bottom View
Note:
6. ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES.
7. COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS.
IMPORTANT NOTICE
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further
notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither
does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will
agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages.
LIFE SUPPORT
Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the
President of Diodes Incorporated.
AP7165 Rev. 1
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