AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
3340.2008.04.1.0 1
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General Description
The AAT3340 is a low-noise, constant-frequency charge
pump DC/DC converter that uses a dual-mode load switch
(1x) and fractional (1.5x) conversion to maximize effi-
ciency for white LED applications. The AAT3340 is capable
of driving 4 white LEDs at a total of 80mA from a single
2.7V to 5.5V input. The current sinks may be operated
individually or in parallel while driving higher-current
LEDs. A low external parts count (two 1µF flying capacitors
and two small 1µF capacitors at VIN and VOUT) makes the
AAT3340 ideal for small battery-powered applications.
Analogic Tech’s Simple Serial Control (S2Cwire) digital
interface is used to enable, disable and set current to
one of 32 levels for the LEDs.
The AAT3340 is equipped with built-in short-circuit and
over-temperature protection. The soft-start circuitry pre-
vents excessive inrush current at start-up and mode
transitions. The AAT3340 family is available in Pb-free,
space-saving TSOPJW and TDFN33 packages, and oper-
ates over the -40°C to +85°C ambient temperature
range.
Features
• Dual-Mode (1x/1.5x) Charge Pump
• Drives up to 4-Channel Backlight LEDs
• 32-Level Programmable Backlight Current (linear,
inverting)
• Single-wire S2Cwire Control
• Built-in Thermal Protection
• Automatic Soft Start
• -40°C to +85°C Temperature Range
• TSOPJW-12 and TDFN33-12 Packages
Applications
• Cellular and Smart Phones
• Digital Still and Video Cameras
• PDAs
• Portable Devices
• Portable Media Players
• Other White LED Backlighting
Typical Application
VBATTERY
3.6V
EN/SET
S2Cwire Serial Control
IN
EN/SET
C2+
C2-
C1+
C1-
OUT
BL1
BL2
BL3
GND
CIN
1µF
D1
C1
1µF
C2
1µF
D2 D3 D4
COUT
1µF
BL4
AAT3340
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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Pin Description
Pin Number
Name Function
TDFN33-12 TSOPJW-12
1 12 C1+
Flying capacitor 1 positive terminal. Connect a 1μF ceramic capacitor between C1+ and C1-.
2 11 OUT Charge pump output to drive load circuit. Requires a 1μF or larger ceramic capacitor con-
nected between this pin and ground.
310IN
Input power supply. Requires a 1μF or larger ceramic capacitor connected between this pin
and ground.
4 9 C2+
Flying capacitor 2 positive terminal. Connect a 1μF ceramic capacitor between C2+ and C2-.
5 8 EN/SET AS2Cwire serial interface control pin.
6 7 BL1 Current sink input #1.
7 6 BL2 Current sink input #2.
8 5 BL3 Current sink input #3.
9 4 BL4 Current sink input #4.
10 3 C1- Flying capacitor 1 negative terminal.
11 2 GND Ground pin
12 1 C2- Flying capacitor 2 negative terminal.
EP n/a Exposed paddle (bottom). Connect to GND directly beneath package.
Pin Configuration
TSOPJW-12 TDFN33-12
(Top View) (Top View)
1
2
3
4
5
6
12
11
10
9
8
7
C2-
GND
C1-
BL4
BL3
BL2
C1+
OUT
IN
C2+
EN/SET
BL1
C1+
OUT
IN
1
C2+
EN/SET
BL1
C2-
GND
C1-
BL4
BL3
BL2
2
3
4
5
6
12
11
10
9
8
7
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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Absolute Maximum Ratings
TA = 25°C, unless otherwise noted.
Symbol Description Value Units
VIN Input Voltage -0.3 to 6 V
VOUT Charge Pump Output -0.3 to 6 V
VEN/SET EN/SET to GND Voltage -0.3 to 6 V
VEN/SET(MAX) Maximum EN/SET Voltage VIN + 0.3 V
IOUT Maximum DC Output Current (sum of IOUT and D currents) 120 mA
TJ Operating Junction Temperature Range -40 to 150 °C
Thermal Information1
Symbol Description Value Units
θJA Maximum Thermal Resistance2 TSOPJW-12 160 °C/W
TDFN33-12 50
PD Maximum Power Dissipation2 TSOPJW-12 625 mW
TDFN33-12 2 W
TJOperating Junction Temperature Range -40 to 150 °C
1. Mounted on an FR4 board.
2. Derate 6.25mW/°C above 25°C.
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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Electrical Characteristics
VIN = 3.6V; CIN = COUT = 1µF; C1= C2 = 1µF; TA = -40°C to 85°C unless otherwise noted. Typical values are TA = 25°C.
Symbol Parameter Conditions Min Typ Max Units
Input Power Supply
VIN Input Voltage Range 2.7 5.5 V
IQOperating Current EN/SET = IN; 1x Mode, VD1 = VD2 = VD3; VD4 = 1V 1.8 7.0 mA
EN/SET = IN; 1.5x Mode, ID1 = ID2 = ID3; ID4 = Open 4.8 7.2
ISHDN VIN Shutdown Current EN/SET = GND 1 µA
VIN_(TH)
Charge Pump Mode Hysteresis
1x to 1.5x Transition at Any IDX; ID1 = ID2 = ID3;
ID4 = 20mA 0.15 V
TSD Thermal Shutdown Threshold 140 °C
TSD(HYS) Thermal Shutdown Hysteresis 15 °C
LED Current Sink Outputs
I(D-ACC) LED Current Accuracy EN/SET = DATA1 18 20 22 mA
EN/SET = DATA31 0.52 0.64 0.78
I(D-Match) LED Current Matching1IMLED = 20mA ±3 %
VD_(TH) Hysteresis for Mode Change IMLED = 20mA at 1.5x to 1x Mode 0.15 0.25 V
IDMAX
Charge Pump Maximum
Output Current 120 mA
fOSC Clock Frequency 1 MHz
VBL_(TH)
Charge Pump Mode Transition
Threshold 0.15 V
tSS Charge Pump Start Up Time 150 µs
EN/SET and S2Cwire Control
VENH
EN/SET Input High Threshold
Voltage 1.4 V
VENL
EN/SET Input Low Threshold
Voltage 0.4 V
tEN/SET(HI_MIN) EN/SET Minimum High Time 50 ns
tEN/SET(HI_MAX) EN/SET Maximum High Time 75 µs
tEN/SET(LOW) EN/SET Input Low Time 0.3 75 µs
t EN/SET(OFF) EN/SET Input OFF Timeout 500 µs
tEN/SET(LAT) EN/SET Input Latch Timeout2500 µs
1. LED current match is defined as 100 (IDX - IAVG)/IAVG.
2. If the part has been shut down, then the latch time would be 500µs longer for soft start of charge pump.
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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Typical Characteristics
VIN = 3.6V, CIN = COUT = C1 = C2 = 1μF; TA = 25°C, unless otherwise noted.
No Load Operating Current (1.5x Mode)
vs. Input Voltage
Input Voltage (V)
I
Q
(mA)
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
2.7 3.9 4.3 4.7 5.1 5.53.53.1
85°C
60°C
40°C
25°C
0°C
-20°C
-40°C
No Load Operating Current (1x Mode)
vs. Input Voltage
Input Voltage (V)
I
Q
(mA)
1.3
1.4
1.5
1.6
1.7
1.8
2.7 4.3 4.7 5.1 5.53.93.53.1
85°C
60°C
40°C
25°C
0°C
-20°C
-40°C
Shutdown Current vs. Temperature
Temperature (°C)
I
SHDN
(µA)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
-40 -15 10 35 60 8
5
VIN = 5.5V
VIN = 2.7V
1.5X Mode Output Voltage vs. Output Current
Output Current (mA)
Output Voltage (V)
4.5
4.6
4.7
4.8
4.9
5
5.1
5.2
0 40 80 100 1206020
VIN = 3.6V
VIN = 3.3V
Efficiency vs. Input Voltage
(Code 26, ILED = 3.8mA)
Input Voltage
(V)
Efficiency (%)
40
55
70
85
100
2.7 5.55.14.74.33.93.53.1
VF = 3.3V
VF = 3V
VF = 2.7V
Efficiency vs. Input Voltage
(Code 1, BL = 20mA)
Input Voltage
(V)
Efficiency (%)
40
55
70
85
100
2.7 5.55.14.74.33.93.53.1
VF = 3.3V
VF = 3V
VF = 2.7V
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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Typical Characteristics
VIN = 3.6V, CIN = COUT = C1 = C2 = 1μF; TA = 25°C, unless otherwise noted.
EN/SET Input Latch Timeout vs. Input Voltage
Input Voltage
(V)
tEN/SET(LAT) (µs)
100
150
200
250
300
350
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.
5
85°C
25°C
-40°C
EN/SET Input OFF Timeout vs. Input Voltage
Input Voltage
(V)
tEN/SET(OFF) (µs)
100
150
200
250
300
350
400
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
85°C
25°C
-40°C
Output Current Matching Over Temperature
Temperature (°C)
Output Current (mA)
18
19
19
20
20
21
21
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
BL4
BL3
BL2
BL1
EN Input High Threshold Voltage
vs. Input Voltage
Input Voltage
(V)
VENH (V)
0.2
0.4
0.6
0.8
1.0
1.2
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
-40°C
25°C
85°C
EN Input Low Threshold Voltage
vs. Input Voltage
Input Voltage
(V)
VENL (V)
0.2
0.4
0.6
0.8
1.0
1.2
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
-40°C
25°C
85°C
1x Mode Turn-On Waveform
(VIN = 3.6V; Load = 80mA)
Time (100µs/div)
VOUT
(4V/div)
VBL
(4V/div)
EN
(2V/div)
IIN
(200mA/div)
0
0
0
0
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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Typical Characteristics
VIN = 3.6V, CIN = COUT = C1 = C2 = 1μF; TA = 25°C, unless otherwise noted.
1.5x Mode Turn-On Waveform
(VIN = 3.3V; 80mA Load)
Time (100µs/div)
VOUT
(2V/div)
VBL
(2V/div)
EN
(2V/div)
IIN
(200mA/div)
0
0
0
0
1.5x Mode Load Characteristics
(VIN = 3.3V; 80mA Load)
Time (800ns/div)
VOUT (AC)
(50mV/div)
C1N
(2V/div)
C2N
(2V/div)
VIN (AC)
(20mV/div)
0
0
0
0
1.5x Mode Turn-Off
(VIN = 3.3V; Load = 80mA)
Time (200µs/div)
VF
(1V/div)
EN
(1V/div)
IIN
(100mA/div) 0
0
0
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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Functional Description
The AAT3340 is a high efficiency charge pump white LED
driver for portable applications. It can drive 4 white
LEDs.
The AAT3340 is a fractional charge pump and can multiply
the input voltage by 1 or 1.5 times. The charge pump
switches at a fixed frequency of 1MHz. The internal-mode-
selection-circuit automatically switches the mode between
1x and 1.5x mode base on the input voltage, output volt-
age and load current. This mode switching maximizes the
efficiency throughout the entire load range.
When the input voltage is high enough, the AAT3340
operates in 1x mode to provide maximum efficiency. If
the input voltage is too low to supply programmed LED
current, typically when the battery discharges and the
voltage decays, a 1.5x mode is automatically enabled.
When the battery is connected to a charger and the input
voltage become high enough again, the device will
switch back to 1x mode.
The current sink magnitude is controlled by the EN/SET
serial data S2Cwire interface. The interface records rising
edges of the EN/SET pin and decodes them into 32 indi-
vidual current level settings.
Application Information
Current Level Settings
LED current level is set via AnalogicTech’s Simple Serial
Control (S2Cwire) interface in a linear scale where each
code is 0.6mA smaller than the previous code, as shown
in Figure 1. In this manner, the LED current decreases
linearly with each increasing code.
LED Current vs. S2C Data
(VF = 3.0V @ 20mA)
S2C Code
LED Current (mA)
0
5
10
15
20
25
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
Figure 1: LED Current Level vs. Simple Serial
Control (S2Cwire).
Functional Block Diagram
Dual-mode
Charge Pump
1X/1.5X
C1+
BL1
BL2
BL3
BL4
Control
Logic
EN/SET
GND
C1-
C2+
C2-
IN
32-step S2Cwire
Backlight Control
4
OUT
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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2 3OFF OFF
tLO tOFFtHI
1
Figure 2: EN/SET Timing Diagram.
S2Cwire
Data LED Current
(mA) S2Cwire
Data LED Current
(mA)
1 20.0 17 9.7
2 19.4 18 9.0
3 18.7 19 8.4
4 18.1 20 7.7
5 17.4 21 7.1
6 16.8 22 6.5
7 16.1 23 5.8
8 15.5 24 5.2
9 14.8 25 4.5
10 14.2 26 3.9
11 13.6 27 3.2
12 12.9 28 2.6
13 12.3 29 1.9
14 11.6 30 1.3
15 11.0 31 0.6
16 10.3 32 0.3
Table 2: S2C Data vs LED Current.
EN/SET Serial Interface
The LED current magnitude is controlled by the EN/SET
pin using the S2Cwire interface. The interface records
rising edges of the EN/SET pin and decodes them into 32
individual current level settings. Code 1 is full scale, and
Code 32 is 0.3mA. The modulo 32 interface wraps states
back to state 1 after the 32nd clock. 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 full scale,
the lowest setting equal to 0.3mA. Once the final clock
cycle is input for the desired brightness level, the EN/
SET pin should be held high to maintain the device out-
put current at the programmed level. The device is dis-
abled 500μs after the EN/SET pin enters a logic low
state. 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). Exact counts of
clock pulses for the desired current level should be
entered on the EN/SET pin with a single burst of clocks.
The counter refreshes each time a new clock input to the
EN/SET pin is detected. A constant current is sunk as
long as EN/SET remains in a logic high state. The current
sink pins are switched off after EN/SET has remained low
state for at least the tOFF timeout period (see Figure 1).
LED Selection
The AAT3340 is designed to drive white LEDs with for-
ward voltages up to 4.8V. Since BL1 through BL4 output
current sinks are matched with negligible voltage depen-
dence; the LED brightness will be matched regardless of
their forward voltage matching.
Device Switching Noise Performance
The AAT3340 operates at a fixed frequency of 1MHz to
control noise and limit harmonics that can interfere with
the RF operation of cellular telephone handsets or other
communication devices. Back-injected noise appearing
on the input pin of the charge pump is 20mV peak-to-
peak, typically ten times less than inductor-based DC/DC
boost converter white LED backlight solutions. The
AAT3340 soft-start feature prevents noise transient
effects associated with inrush currents during startup of
the charge pump circuit.
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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Power Efficiency and Device Evaluation
The charge pump efficiency discussion in the following
sections accounts only for efficiency of the charge pump
section itself. Due to the unique circuit architecture and
design of the AAT3340, it is very difficult to measure
efficiency in terms of a percent value comparing input
power over output power. Since the AAT3340 outputs
are pure constant current sinks and typically drive indi-
vidual loads, it is difficult to measure the output voltage
for a given output to derive an overall 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 com-
paring 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. The
AAT3340 efficiency may be quantified under specific
conditions and is dependent upon the input voltage and
voltage on BL outputs BL1 through BL4 for a given con-
stant current setting.
At any given current setting, if VIN is sufficiently high to
avoid drop-out for all the BL pin in 1x mode, the device
stays in 1x mode. If in 1x mode, Vin is less than the
voltage required on any of the 4 current sink channels to
avoid drop-out, the device will operate in 1.5x charge
pump mode. Each of these two modes will yield different
efficiency values.
The AAT3340 contains a fractional charge pump which
will boost the input supply voltage when VIN is less than
the voltage required on the constant current sink pins.
The ideal efficiency (η) can be defined as:
η == VF · ILED
VIN · IIN
PLED
PIN
VF is the LED forward voltage.
In 1x mode, IIN = ILED + IQ.
Ignore the quiescent current, it’s much smaller than ILED.
η = VF · ILED
VIN · IIN
In 1.5X mode, IIN = 1.5 · ILED + IQ.
Ignore the quiescent current, it’s much smaller than ILED.
η = VF · ILED
VIN · 1.5 · IIN
Please also refer to the Typical Characteristics section of
this document for measured plots of efficiency versus
input voltage and output load current for the given
charge pump output voltage options.
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 equiv-
alent 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 cur-
rent sinks are only programmed for low current levels,
then the capacitor size may be decreased.
Test Current/Channel Disable
Each current sink channel is equipped with a test current
function. While it has been enabled, the AAT3340
automatically detects the presence of LEDs all the time.
Unused channels that are tied to OUT or LED loads that
have failed will be automatically disabled.
Capacitor Characteristics
Ceramic composition capacitors are highly recommend-
ed over all other types of capacitors for use with the
AAT3340. Ceramic capacitors offer many advantages
over their tantalum and aluminum electrolytic counter-
parts. A ceramic capacitor has very low ESR, is lowest
cost, has a smaller PCB footprint, and is non-polarized.
Low ESR ceramic capacitors help to maximize charge
pump transient response. Since ceramic capacitors are
non-polarized, they are not prone to incorrect connec-
tion damage.
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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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-
tions, size or area, material composition, and ambient
temperature. Capacitor ESR is typically measured in mil-
liohms for ceramic capacitors and can range to more
than several ohms for tantalum or aluminum electrolytic
capacitors.
Ceramic Capacitor Materials
Ceramic capacitors less than 0.1μF are typically made
from NPO or C0G materials. NPO and C0G materials
have tight tolerance and are stable over temperature.
Capacitors with large values are typically composed of
X7R, X5R, Z5U, or Y5V dielectric materials.
Large ceramic capacitors, greater than 2.2μF, are often
available in low-cost Y5V and Z5U dielectrics, but capac-
itors greater than 1μF are usually not required for
AAT3340 applications.
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.
Thermal Protection
The AAT3340 has a built-in thermal protection circuit
that will shut down the charge pump if the die tempera-
ture rises above the thermal limit, as is generally the
case during short-circuit event of the VOUT pin.
Evaluation Board Layout
When designing a PCB for the AAT3340, the key require-
ments are:
1. Place the two flying capacitors, C1 and C2, as close
to the chip as possible, otherwise the 1.5X mode
performance will be compromised.
2. Place the input and output decoupling capacitors as
close to the chip as possible to reduce switching
noise and output ripple.
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High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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AAT3340 Evaluation Board Schematic
CIN
1µF
COUT
1µF
C8
10µF
C2
1µF
C1
1µF
0.1µF
C4R5
1K
R4
1K 330
R7
20K
R2
VIN
JP1
JP5
S2C
UP
S1
DOWN
S2
CYCLE
S3
S1
S2
S3
EN/SET
CPO
C1-C1+
+3.3V
R6
330
C6
4.7µF
123
J1
DC+
DC+
DC-
R3
1K VDD
GP5
GP4
GP3 GP2
GP1
GP0
VSS
U2 PIC12F675
D1D2
D3
Green
LED1
Red
LED2
POT10K
VR1
GND
D4
C2+ C2-
R12
0
R11 0
R10 0
R9 0
BL1
BL2
BL3
BL4
AAT3340
C1P
1
CPO
2
VIN
3
C2P
4
1
2
3
4
8
7
6
5
EN/SET
5
BL1
6BL2 7
BL3 8
BL4 9
C1N 10
GND 11
C2N 12
U1
EXP PAD
Figure 3: AAT3340 Evaluation Board Rev.1A Schematic.
Figure 4: AAT3340 Evaluation Board Rev.1A Figure 5: AAT3340 Evaluation Board Rev.1A
PCB Component Side Layout. Solder Side Layout.
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
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www.analogictech.com
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
3340.2008.04.1.0 13
www.analogictech.com
Ordering Information
Interface Current Control Package Marking Part Number(Tape & Reel)
S2Cwire 32-step TSOPJW-12 2GXYY AAT3340ITP-1-T1
S2Cwire 32-step TDFN33-12 2HXYY AAT3340IWP-1-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
TSOPJW-12
0.20 + 0.10
- 0.05
0.055 ± 0.045 0.45 ± 0.15
7° NOM
4° ± 4°
3.00 ± 0.10
2.40 ± 0.10
2.85 ± 0.20
0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC 0.50 BSC
0.15 ± 0.05
0.9625
±
0.0375
1.00 + 0.10
- 0.065
0.04 REF
0.010
2.75 ± 0.25
All dimensions in millimeters.
1. XYY = assembly and date code.
2. Sample stock is generally held on part numbers listed in BOLD.
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
14 3340.2008.04.1.0
www.analogictech.com
AAT3340
High Efficiency 1x/1.5x Charge PumpChargePumpTM
PRODUCT DATASHEET
14 3340.2008.04.1.0
www.analogictech.com
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 specifi cations 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 fi tness 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. Specifi c 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.
TDFN33-12
Top View Bottom View
Detail "A"
Side View
3.00 ± 0.05
Index Area Detail "A"
1.70 ± 0.05
3.00 ± 0.05
0.05 ± 0.05
0.23 ± 0.05
0.75 ± 0.05
2.40 ± 0.05
0.43 ± 0.05
0.45 ± 0.050.23 ± 0.05
0.1 REF
Pin 1 Indicator
(optional)
C0.3
All dimensions in millimeters.
1. 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.
