Analogic AAT3114AISN High efficiency 1.5x fractional charge pumps for white led application Datasheet

PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
TM
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
General Description
Features
The AAT3113 and AAT3114/14A are low noise, constant
frequency charge pump DC/DC converters that use fractional (1.5X) conversion to increase efficiency in white
LED applications. The devices can be used to produce
current levels up to 20mA for each output from a 2.7V
to 5.5V input. A low external parts count (two 1µF flying
capacitors and two small bypass capacitors at VIN and
OUT) makes these devices ideally suited for small, battery-powered applications.
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AnalogicTech’s Simple Serial Control™ (S2Cwire™) interface is used to enable, disable, and set the LED drive
current for 32-level logarithmic scale LED brightness
control. AAT3113 and AAT3114/14A devices have a thermal management system for protection in the event of a
short-circuit condition on any of the output pins. Built-in
soft-start circuitry prevents excessive inrush current
during start-up. A high switching frequency enables the
use of small external capacitors. A low-current shutdown
feature disconnects the load from VIN and reduces quiescent current to less than 1µA. The AAT3113 provides
four LED current source outputs, and the AAT3114/14A
provides six. The AAT3113 is available in a Pb-free
12-pin TSOPJW package, and the AAT3114/14A is available in a Pb-free 16-pin QFN package.
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•
•
•
•
•
•
•
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AAT3113: Four Outputs
AAT3114/14A: Six Outputs
20mA Full-Scale Current
Simple Serial Control (S2Cwire) Interface
▪ 32-Position Logarithmic Scale with Digital Control
Low Noise Constant Frequency Operation
33% Less Input Current Than Doubler Charge Pump
High Accuracy Brightness Matching
Small Application Circuit
Regulated Output Current
Automatic Soft Start
VIN Range: 2.7V to 5.5V
No Inductors
600kHz Switching Frequency
IQ <1µA in Shutdown
Temperature Range: -40°C to 85°C
12-Pin TSOPJW Package (AAT3113)
16-Pin QFN Package (AAT3114/14A)
Applications
• Programmable Current Source
• White LED Backlighting
Typical Application
VIN
C1+
VIN
C1+
OUT
C1C2+
C1
1µF
C1
1µF
C1C2+
OUT
VBATTERY
CIN
1µF
COUT
1µF
AAT3113
VBATTERY
C2
1µF
CIN
1µF
COUT
1µF
AAT3114/14A
C2-
EN/SET
EN/SET
GND
3113.2008.05.1.10
D1
D2
D3
D4
EN/SET
EN/SET
GND
D4
C2
1µF
C2-
D3
D2
D1
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D1
D2
D3
D4
D5
D6
D6
D5
D4
D3
D2
D1
1
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
TM
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
Pin Descriptions
Pin Number
AAT3114/14A
AAT3113
Symbol
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
7
6
5
N/A
N/A
4
3
N/A
2
1
12
11
N/A
10
9
D2
D3
D4
D5
D6
C1+
C1NC
OUT
C2+
C2GND
NC
VIN
EN/SET
16
8
D1
EP
Function
Current source output 2. If not used, leave pin floating.
Current source output 3. If not used, leave pin floating.
Current source output 4. If not used, leave pin floating.
Current source output 5. If not used, leave pin floating.
Current source output 6. If not used, leave pin floating.
Flying capacitor 1 positive terminal.
Flying capacitor 1 negative terminal.
No connect.
Charge pump output. Requires 1µF bypass capacitor to ground.
Flying capacitor 2 positive terminal.
Flying capacitor 2 negative terminal.
Ground.
No connect.
Input power supply. Requires 1µF bypass capacitor to ground.
Control pin using S2Cwire serial interface.
Current source output 1. Required reference current source. Do not leave pin
floating.
Exposed paddle (bottom); connect to GND directly beneath package.
Pin Configuration
TSOPJW-12
(Top View)
AAT3113
9
5
8
6
7
D2
1
12
GND
D3
2
11
C2-
D4
3
10
C2+
D5
4
9
OUT
8
NC
C1-
C1+
D6
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7
6
5
2
13
4
14
10
NC
VIN
3
C2GND
VIN
EN/SET
D1
D2
15
11
EN/SET
12
2
16
1
D1
C2+
OUT
C1C1+
D4
D3
QFN44-16
(Top View)
AAT3114/14A
3113.2008.05.1.10
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
TM
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
Part Number Descriptions
Part Number
VIN Range
Number of LED Outputs,
20mA Full-Scale
LED Present
Detect Current
AAT3113ITP
AAT3114ISN
AAT3114AISN
3.0V ≤ VIN ≤ 5.5V
4
3.2V ≤ VIN ≤ 5.5V
6
2µA
2µA
150µA
Package
TSOPJW-12
QFN44-16
Absolute Maximum Ratings
TA = 25°C, unless otherwise noted.
Symbol
VIN
VOUT
VEN/SET
VEN/SET(MAX)
IOUT
θJA
TJ
3113.2008.05.1.10
Description
Input Voltage
Charge Pump Output
EN/SET to GND Voltage
Maximum EN/SET to Input Voltage
Maximum DC Output Current (sum of IOUT and D currents)
Thermal Resistance
Operating Junction Temperature Range
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Value
Units
-0.3 to 6
-0.3 to 6
-0.3 to 6
0.3
150
37
-40 to 150
V
V
V
V
mA
°C/W
°C
3
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
TM
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
Electrical Characteristics
VIN = 3.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C.
Symbol
Description
Input Power Supply
Operation Range
VIN
ICC
Operating Current
ISHDN
Shutdown Current
IDX
Output Current
Output Current Line
Regulation
Current Matching Between
I(D-Match)
Any Two Outputs
η
Efficiency
Charge Pump
tSS
Soft-Start Time
FCLK
Clock Frequency
EN/SET
VEN(L)
Enable Threshold Low
VEN(H)
Enable Threshold High
tLO
EN/SET Low Time
tHI
Minimum EN/SET High Time
tOFF
EN/SET Off Timeout
Input
EN/SET Input Leakage
Current
∆ID/∆VIN
4
Conditions
Min
Typ
Max
Units
1
5.5
2
1
V
mA
µA
20
22
mA
2
%/V
2.7
Active, No Load Current
EN = 0
AAT3113: 3.0V ≤ VIN ≤ 5.5V
AAT3114/14A: 3.2V ≤ VIN ≤ 5.5V
TA = 25°C, All Outputs
Max Current
3.0V ≤ VIN ≤ 5.5V
18
-2
VD1:Dn = 3.6V, VIN = 3.3V
0.3
%
VIN = 3.5V, IOUT(total) = 40mA
93
%
300
VIN = 2.7V to 5.5V
VIN = 2.7V to 5.5V
400
600
0.5
1.4
0.3
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-1
µs
kHz
500
V
V
µs
ns
µs
1
µA
75
50
300
VIN = 5.5V
900
3113.2008.05.1.10
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
TM
Typical Characteristics
VIN = 3.5V, CIN = COUT = C1 = C2 = 1µF; TA = 25°C, unless otherwise noted.
Efficiency vs. Supply Voltage
Quiescent Current vs. Temperature
100
1.00
Efficiency (%)
0.98
0.96
IQ (mA)
30mA
95
0.94
0.92
0.90
90
85
75
65
60
0
20
40
60
80
120mA
70
0.86
-20
40mA
80
0.88
-40
3.0
100
3.2
3.4
60mA
3.6
3.8
4.0
4.2
4.4
Efficiency vs. Load Current
Quiescent Current vs. Supply Voltage
96
1.2
94
Efficiency (%)
1.1
1.0
IQ (mA)
80mA
Supply Voltage (V)
Temperature (°C)
0.9
0.8
92
90
88
86
84
82
0.7
80
0.6
3.0
3.5
4.0
4.5
5.0
0
5.5
20
40
60
80
100
120
Load Current (mA)
Supply Voltage (V)
Shutdown Current vs. Temperature
Oscillator Frequency vs. Temperature
1.000
710
700
690
0.100
FOSC (kHz)
Shutdown Current (µA)
20mA
0.010
680
670
660
650
640
630
0.001
-40
620
-20
0
20
40
Temperature (°C)
60
80
100
610
-40
-20
0
20
40
60
80
100
Temperature (°C)
3113.2008.05.1.10
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5
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
TM
Typical Characteristics
VIN = 3.5V, CIN = COUT = C1 = C2 = 1µF; TA = 25°C, unless otherwise noted.
Normalized I DIODE vs. Temperature
IDIODE Response
(-31dB to 0dB)
1.02
1.01
IDIODE
1.00
ENSET
(2V/div)
0.99
0dB
0.98
0.97
0.96
IDIODE
0.95
-40
-20
0
20
40
60
80
-31dB
100
Temperature (°C)
Time (10µs/div)
IDIODE vs. VIN
IDIODE Response
(-9dB to -10dB)
140
IDIODE (mA)
120
ENSET
(2V/div)
100
80
60
0dB
40
-10dB
IDIODE
20
0
3.0
3.5
4.0
-9dB
4.5
-31dB
VIN (V)
Time (10µs/div)
VIH and VIL vs. VIN
140
1.000
120
0.975
0.950
VIH and VIL (V)
IDIODE (mA)
IDIODE vs. VDIODE
100
80
60
40
VIH
0.875
0.850
0.825
VIL
0.800
0.775
20
0
0.750
3.0
3.2
3.4
3.6
3.8
4.0
V DIODE (V)
6
0.925
0.900
2.5
3.0
3.5
4.0
4.5
5.0
5.5
VIN (V)
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3113.2008.05.1.10
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
TM
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
Typical Characteristics
VIN = 3.5V, CIN = COUT = C1 = C2 = 1µF; TA = 25°C, unless otherwise noted.
Turn-On
Turn-Off
ENSET
(2V/div)
ENSET
(2V/div)
OUT
(5V/div)
OUT
(5V/div)
VDIODE
(5V/div)
VDIODE
(2V/div)
IIN
(50mA/div)
IIN
(50mA/div)
Time (100µs/div)
Time (200µs/div)
40mA Load Characteristics
60mA Load Characteristics
IN
OUT
20mV/div
OUT
10mV/div
IN
VDIODE
VDIODE
Time (1µs/div)
Time (1µs/div)
80mA Load Characteristics
IN
OUT
VDIODE
VDIODE
Time (1µs/div)
3113.2008.05.1.10
20mV/div
IN
20mV/div
OUT
120mA Load Characteristics
Time (1µs/div)
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7
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
TM
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
Functional Block Diagram
VIN
Soft Start
1.5X
Charge
Pump
600kHz
Oscillator
Voltage
Reference
EN/SET
5
S2Cwire
Interface
32x8 bit
ROM
The AAT3113 and AAT3114/14A devices are high efficiency 1.5X fractional charge pumps intended for white
LED backlight applications. The fractional charge pump
consists of a linear regulator followed by a 1.5X charge
pump. The AAT3113 and AAT3114/14A require only four
external components: two 1µF ceramic capacitors for the
charge pump flying capacitors (C1 and C2), one 1µF
ceramic capacitor for CIN, and one 0.33µF to 1µF ceramic capacitor for COUT. The charge pump output is converted into four or six constant current outputs (D1 to
D4 or D6) to drive four or six individual LEDs with a
maximum of 20mA each. The current source output
magnitude is controlled by the EN/SET serial data
S2Cwire interface. The interface records rising edges of
8
C2+
C2OUT
8
GND
Functional Description
C1+
C1-
Current
Mode
DAC
D1
D2
D3
D4
D5*
D6*
* AAT3114/14A only
the EN/SET pin and decodes them into 32 individual current level settings each 1dB apart (see Table 1, Current
Level Settings). Code 32 is full scale, and Code 1 is full
scale attenuated by 31dB. The modulo 32 interface
wraps states back to state 1 after the 32nd clock. With
each EN/SET pulse, the output current increases by 1dB.
To decrease the output current by 1dB, 31 EN/SET clock
pulses are required. The counter can be clocked at
speeds up to 1MHz, so intermediate states are not visible. The first rising edge of EN/SET enables the IC and
initially sets the output LED current to -31dB, the lowest
setting equal to 525µA. Once the final clock cycle is input
for the desired brightness level, the EN/SET pin is held
high to maintain the device output current at the programmed level. The device is disabled 500µs after the
EN/SET pin transitions to a logic low state.
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3113.2008.05.1.10
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
TM
Applications Information
EN/SET Serial Interface
The current source output magnitude is controlled by the
EN/SET pin using AnalogicTech’s Simple Serial Control
(S2Cwire) interface. The interface records rising edges of
the EN/SET pin and decodes them into 32 individual current level settings each 1dB apart. Code 32 is full scale,
and Code 1 is full scale attenuated by 31dB. The modulo
32 interface wraps states back to state 1 after the 32nd
clock, so 1dB of attenuation is achieved by clocking the
EN/SET pin 31 times (see graph titled, “IDIODE Response
-9dB to -10dB”). The counter can be clocked at speeds
up to 1MHz, so intermediate states are not visible. The
first rising edge of EN/SET enables the IC and initially
sets the output LED current to -31dB, the lowest setting
equal to 525µA. Once the final clock cycle is input for the
desired brightness level, the EN/SET pin is held high to
maintain the device output current at the programmed
level. The device is disabled 500µs after the EN/SET pin
transitions to a logic low state.
Current Level Settings
LED current level is set via the serial interface according
to a logarithmic scale where each code is 1dB greater
than the previous code. In this manner, the LED brightness appears linear with each increasing code.
Code
20mA max
Code
20mA max
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
0.549
0.627
0.706
0.784
0.863
1.020
1.098
1.255
1.412
1.569
1.804
1.961
2.275
2.510
2.824
3.137
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
3.529
4.000
4.471
5.020
5.647
6.353
7.059
7.922
8.941
10.039
11.216
12.627
14.118
15.843
17.804
20.000
The EN/SET timing is designed to accommodate a wide
range of data rates. After the first rising edge of EN/SET,
the charge pump is enabled and reaches full capacity
after the soft-start time (TSS). During the soft-start time,
multiple clock pulses may be entered on the EN/SET pin
to set the final output current level with a single burst of
clocks. Alternatively, the EN/SET clock pulses may be
entered one at a time to gradually increase the LED
brightness over any desired time period. A constant current is sourced as long as EN/SET remains in a logic high
state. The current source outputs are switched off after
EN/SET has remained in a low state for at least the tOFF
timeout period (see Figure 2).
Table 1: Current Level Settings.
Normalized Current to Full Scale
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Code
Figure 1: Normalized Current Level Settings.
3113.2008.05.1.10
www.analogictech.com
9
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
TM
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
tLO
tHI
tOFF
EN/SET
Code
2
1
OFF
3
OFF
Figure 2: EN/SET Timing Diagram.
THI > 50ns
ON/1
2
300ns < TLO < 75µs
3
4
5
50ns minimum to enable
n
(n < =32)
6
OFF
Figure 3: Enable / Disable / LED Brightness Level Set Data Input.
LED Selection
AAT3113 and AAT3114/14A devices are designed to drive
white LEDs with forward voltages to 4.2V. Since the
D1:D6 output current sources are matched with negligible voltage dependence, the LED brightness will be
matched regardless of their forward voltage matching.
Charge Pump Efficiency
The AAT3113 and AAT3114/14A devices are fractional
charge pumps. The efficiency (η) can be simply defined
as a linear voltage regulator with an effective output
voltage that is equal to one and one half times the input
voltage. Efficiency (η) for an ideal 1.5X charge pump can
typically be expressed as the output power divided by
the input power:
η=
POUT
PIN
In addition, with an ideal 1.5X charge pump, the output
current may be expressed as 2/3 of the input current.
The expression to define the ideal efficiency (η) can be
rewritten as:
η=
POUT
VOUT · IOUT
V
=
= OUT
PIN
VIN · 1.5IOUT 1.5VIN
-or-
η(%) = 100
⎛ VOUT ⎞
⎝ 1.5VIN⎠
For a charge pump with an output of 5V and a nominal
input of 3.5V, the theoretical efficiency is 95%. Due to
10
internal switching losses and IC quiescent current consumption, the actual efficiency can be measured at 93%.
These figures are in close agreement for output load conditions from 1mA to 100mA. Efficiency will decrease as
load current drops below 0.05mA or when the level of VIN
approaches VOUT. Refer to the Typical Characteristics section of this datasheet for measured plots of efficiency
versus input voltage and output load current for the
given charge pump output voltage options.
Power Efficiency and Device Evaluation
The charge pump efficiency discussion in the previous section only accounts for efficiency of the charge pump section itself. Due to the unique circuit architecture and
design of the AAT3113 and AAT3114/14A, it is very difficult to measure efficiency in terms of a percent value
comparing input power over output power. Since the
device outputs are pure constant current sources, it is difficult to measure the output voltage for a given output (D1
to D6) to derive an output power measurement. For any
given application, white LED forward voltage levels can
differ, yet the output drive current will be maintained as a
constant. This makes quantifying output power a difficult
task when taken in the context of comparing to other
white LED driver circuit topologies. A better way to quantify total device efficiency is to observe the total input
power to the device for a given LED current drive level.
The best white LED driver for a given application should
be based on trade-offs of size, external components
count, reliability, operating range, and total energy
usage...not just “% efficiency.”
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3113.2008.05.1.10
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
TM
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
tions, size or area, material composition, and ambient
temperature. Capacitor ESR is typically measured in milliohms for ceramic capacitors and can range to more
than several ohms for tantalum or aluminum electrolytic
capacitors.
700
VIN = 3.6V
Input Power (mW)
600
500
400
300
Ceramic Capacitor Materials
200
Ceramic capacitors less than 0.1µF are typically made
from NPO or C0G materials. NPO and C0G materials
generally have tight tolerance and are very stable over
temperature. Larger capacitor values are usually composed of X7R, X5R, Z5U, or Y5V dielectric materials.
Large ceramic capacitors (i.e., greater than 2.2µF) are
often available in low-cost Y5V and Z5U dielectrics, but
capacitors greater than 1µF are not typically required for
AAT3113 or AAT3114/14A applications.
100
0
0
20
40
60
80
100
120
140
Output (LED) Current (mA)
Figure 3: AAT3113/AAT3114 Input Power
vs. LED Current
Capacitor Selection
Careful selection of the four external capacitors CIN, C1,
C2, and COUT is important because they will affect turn-on
time, output ripple, and transient performance. Optimum
performance will be obtained when low equivalent series
resistance (ESR) ceramic capacitors are used. In general, low ESR may be defined as less than 100mΩ. A
value of 1µF for all four capacitors is a good starting
point when choosing capacitors. If the LED current
sources are only programmed for minimal current levels,
then the capacitor size may be decreased.
Capacitor Characteristics
Ceramic composition capacitors are highly recommended over all other types of capacitors for use with the
AAT3113 and AAT3114/14A products. Ceramic capacitors offer many advantages over their tantalum and
aluminum electrolytic counterparts. A ceramic capacitor
typically has very low ESR, is lowest cost, has a smaller
PCB footprint, and is non-polarized. Low ESR ceramic
capacitors help maximize charge pump transient
response. Since ceramic capacitors are non-polarized,
they are not prone to incorrect connection damage.
Equivalent Series Resistance
ESR is an important characteristic to consider when
selecting a capacitor. ESR is a resistance internal to a
capacitor that is caused by the leads, internal connec-
3113.2008.05.1.10
Capacitor area is another contributor to ESR. Capacitors
that are physically large will have a lower ESR when
compared to an equivalent material smaller capacitor.
These larger devices can improve circuit transient
response when compared to an equal value capacitor in
a smaller package size.
Test Current/Channel Disable
Each channel of the output is equipped with a test current function. The AAT3113 and AAT3114 use a small
(~2µA) current source injected into each output pin to
detect the presence of an LED. Unused channels other
than channel 1 should be left open and will be automatically diasbled instead of wasting the programmed output
current. The test current in the AAT3114A is higher
(~150µA) to accommodate LEDs with lower impedance
in failure mode.
Thermal Protection
The AAT3113 and AAT3114/14A have a thermal protection circuit that will shut down the charge pump and
current outputs if the die temperature rises above the
thermal limit. However, thermal resistance of the QFN
package is so low that if, in the case of the AAT3114/14A,
all six outputs are shorted to ground at maximum 20mA
output level, the die temperature will not rise sufficiently to trip the thermal protection. The thermal protection
will only trip if COUT is shorted to ground and the ambient
temperature is high.
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11
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
TM
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
Driving White LED Display Module
Backlights and Individual White LEDs
Connected in Parallel
The AAT3114/14A D1 to D6 outputs are true constant
current sources capable of driving up to 20mA each over
the operation input voltage range. Since these outputs
are true constant current sources, they may be connected in parallel to drive a single power output. Any
combination of outputs (D1 to D6) may be connected in
parallel. The maximum total output current is a sum of
12
parallel-connected current sources. This feature is particularly useful to power pre-manufactured display modules that are pre-wired with white LED backlights connected in a parallel circuit configuration. All outputs can
be connected in parallel to drive groups of LEDs as well.
The internal current source reference circuit bases feedback from current sensed on the D1 output. For best
operation, the only requirement for this application is
that the output D1 should always be connected to the
load circuit.
www.analogictech.com
3113.2008.05.1.10
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
TM
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
Application Circuits
VIN
C1+
C1
1µF
C1C2+
OUT
V BATTERY
CIN
1µF
COUT
1µF
AAT3114/14A
C2
1µF
C2-
EN/SET
EN/SET
GND
D1
D2
D3
D4
D5
D6
Display Module
D1
R1
D2
R2
D3
R3
D4
D5
R4
R5
D6
R6
Resistor R is optional
Figure 4: AAT3114/14A Application Driving a Display Module With Six Parallel-Connected White LEDs.
VIN
C1+
C1
1µF
C1C2+
OUT
V BATTERY
CIN
1µF
COUT
1µF
AAT3114/14A
C2
1µF
C2-
EN/SET
EN/SET
GND
D1
D2
D3
D4
D5
D6
Keyboard Backlight
Display Backlight
D4
D1
D2
D5
D6
D3
Enable Keyboard Backlight
Enable Display Backlight
Figure 5: AAT3114/14A Dual Backlight Control Circuit.
3113.2008.05.1.10
www.analogictech.com
13
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
TM
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
Ordering Information
Package
Marking1
Part Number (Tape and Reel)2
TSOPJW-12
QFN44-16
QFN44-16
HTXYY
FGXYY
OVXYY
AAT3113ITP-20-T1
AAT3114ISN-20-T1
AAT3114AISN-20-T1
All AnalogicTech products are offered in Pb-free packaging. The term “Pb-free” means semiconductor
products that are in compliance with current RoHS standards, including the requirement that lead not exceed
0.1% by weight in homogeneous materials. For more information, please visit our website at
http://www.analogictech.com/about/quality.aspx.
Package Information
QFN44-163
2.400 ± 0.050
16
2.400 ± 0.050
1
C0.3
0.650 BSC
4.000 ± 0.050
13
4
9
8
4.000 ± 0.050
Pin 1 Identification
0.330 ± 0.075
0.550 ± 0.020
Pin 1 Dot By Marking
5
2.280 REF
Top View
0.214 ± 0.036
0.900 ± 0.100
0.025 ± 0.025
Bottom View
Side View
All dimensions in millimeters.
1. XYY = assembly and date code.
2. Sample stock is generally held on all part numbers listed in BOLD.
3. The leadless package family, which includes QFN, TQFN, DFN, TDFN and STDFN, has exposed copper (unplated) at the end of the lead terminals due to the manufacturing
process. A solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder connection.
14
www.analogictech.com
3113.2008.05.1.10
PRODUCT DATASHEET
AAT3113, AAT3114/14A
ChargePump
TM
High Efficiency 1.5X Fractional Charge Pumps For White LED Applications
TSOPJW-12
2.85 ± 0.20
2.40 ± 0.10
0.20 + 0.10
- 0.05
0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC
7° NOM
0.055 ± 0.045
0.04 REF
0.15 ± 0.05
+ 0.10
1.00 - 0.065
0.9625 ± 0.0375
3.00 ± 0.10
4° ± 4°
0.45 ± 0.15
0.010
2.75 ± 0.25
All dimensions in millimeters.
Advanced Analogic Technologies, Inc.
3230 Scott Boulevard, Santa Clara, CA 95054
Phone (408) 737-4600
Fax (408) 737-4611
© Advanced Analogic Technologies, Inc.
AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights, or other intellectual
property rights are implied. AnalogicTech reserves the right to make changes to their products or specifications or to discontinue any product or service without notice. Except as provided in AnalogicTech’s terms and
conditions of sale, AnalogicTech assumes no liability whatsoever, and AnalogicTech disclaims any express or implied warranty relating to the sale and/or use of AnalogicTech products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. In order to minimize risks associated with the customer’s applications, adequate
design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. Testing and other quality control techniques are utilized to the extent AnalogicTech deems necessary to
support this warranty. Specific testing of all parameters of each device is not necessarily performed. AnalogicTech and the AnalogicTech logo are trademarks of Advanced Analogic Technologies Incorporated. All other
brand and product names appearing in this document are registered trademarks or trademarks of their respective holders.
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15