AAT3166IWP-T1 [ANALOGICTECH]
High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications; 高效率1X / 1.5X / 2X电荷泵白光LED应用
| 型号： | AAT3166IWP-T1 |
| 厂家： | 
ADVANCED ANALOGIC TECHNOLOGIES |
| 描述： | High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications |
| 文件： | 总14页 (文件大小：429K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
™
ChargePump
General Description
Features
The AAT3166 is a low noise, constant frequency
charge pump DC/DC converter that uses a tri-
mode load switch (1X), fractional (1.5X), and dou-
bling (2X) conversion to maximize efficiency for
white LED applications. The AAT3166 is capable of
driving four LEDs for a total of 108mA from a 2.7V
to 5.5V input. The current sinks may be operated
individually or in parallel for driving higher-current
LEDs. A low external parts count (two 1µF flying
capacitors and two small 1µF capacitors at IN and
OUTCP) make this part ideally suited for small,
battery-powered applications.
•
•
VIN Range: 2.7V to 5.5V
Fully Programmable Current with Single Wire
— 16-Step Logarithmic Scale
— 14/18/27mA Max Current
— Four Low-Current Settings Down to 115µA
— Low IQ (50µA) for Single-Channel, Low-
Current Mode
Tri-Mode 1X, 1.5X, 2X Charge Pump for
Maximum Efficiency and VF Coverage
Drives Up to Four LEDs
Individual Main-Sub (3-1) Group Control
No Inductors, Low Noise Operation
1MHz Constant Switching Frequency
Small Application Circuit
•
•
•
•
•
•
•
•
•
•
•
AnalogicTech's AS2Cwire™ (Advanced Simple Serial
Control™) serial digital input is used to enable, dis-
able, and set current for each LED with a 16-level
logarithmic scale plus four low-current settings down
to 115µA. For optimized efficiency, low-current set-
tings require only 50µA of housekeeping current.
Built-In Thermal Protection
Built-In Auto-Disable for Open Circuit
Automatic Soft Start
IQ <1uA in Shutdown
TDFN33-12 Package
Each output of the AAT3166 is equipped with built-
in protection for output short-circuit and auto-dis-
able for load short-circuit condition. Built-in soft-
start circuitry prevents excessive inrush current
during start-up. A low-current shutdown feature dis-
connects the load from the input and reduces qui-
escent current to less than 1µA.
Applications
•
•
•
•
•
Color (RGB) Lighting
Programmable Current Sink
Transmissive LCD Display
White LED Backlighting
The AAT3166 is available in a Pb-free, space sav-
ing, 3×3mm TDFN33-12 package and is rated over
the -40°C to +85°C temperature range.
White Photo Flash for Digital Still Cameras
Typical Application
C1+
C2+
C1
1μF
C2
1μF
C2-
C1-
IN
OUTCP
2.7V to 5.5V
COUT
1μF
D1
D2
D3
D4
CIN
1μF
AAT3166
GND
D1
D2
D3
D4
EN/SET
EN/SET
3166.2006.05.1.2
1
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Pin Descriptions
Pin #
Symbol
Function
1
2
3
4
5
D4
EN/SET
C1+
Current sink input #4.
AS2Cwire serial interface control pin.
Flying capacitor 1 positive terminal. Connect a 1µF capacitor between C1+ and C1-.
Flying capacitor 1 negative terminal.
C1-
OUTCP
Charge pump output to drive load circuit. Requires 1µF capacitor connected between this
pin and ground.
6
7
C2+
C2-
IN
Flying capacitor 2 positive terminal. Connect a 1µF capacitor between C2+ and C2-.
Flying capacitor 2 negative terminal.
8
Input power supply. Requires 1µF capacitor connected between this pin and ground.
Ground.
9
GND
D1
10
11
12
EP
Current sink input #1.
D2
Current sink input #2.
D3
Current sink input #3.
Exposed paddle; connect to ground as closely as possible to package.
Pin Configuration
TDFN33-12
(Top View)
1
2
3
4
5
6
12
11
10
9
D4
EN/SET
C1+
D3
D2
D1
C1-
GND
IN
8
OUTCP
C2+
7
C2-
2
3166.2006.05.1.2
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Absolute Maximum Ratings1
Symbol
Description
Value
Units
VIN
Input Voltage to GND
-0.3 to 6
-0.3 to VIN + 0.3
150
V
V
VEN/SET
EN/SET Voltage to GND
2
IOUT
Maximum DC Output Current
mA
°C
°C
TJ
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
-40 to 150
300
TLEAD
Thermal Information3
Symbol
Description
Value
Units
PD
Maximum Power Dissipation4
2.0
50
W
θJA
Maximum Thermal Resistance
°C/W
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions
other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Based on long-term current density limitation.
3. Mounted on an FR4 board.
4. Derate 20mW/°C above 25°C.
3166.2006.05.1.2
3
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Electrical Characteristics1
CIN = COUT = C1 = C2 = 1.0µF; TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C,
VIN = 3.6V.
Symbol
Description
Conditions
Min Typ Max Units
Input Power Supply
VIN Operation Range
2.7
5.5
V
1X Mode, 3.0 ≤ VIN ≤ 5.5, Active,
No Load Current, High Current Mode
1.5X Mode, 3.0 ≤ VIN ≤ 5.5, Active,
No Load Current, High Current Mode
2X Mode, 3.0 ≤ VIN ≤ 5.5, Active,
No Load Current, High Current Mode
1X Mode, 3.0 ≤ VIN ≤ 5.5, Active,
No Load Current, Low Current Mode
VEN/SET = 0V
0.3
1
mA
ICC
Operating Current
1
50
µA
ISHDN
IDX
Shutdown Current
1
µA
%
%
%
High Current Accuracy
Low Current Accuracy
Current Matching2
ISET = 18mA, TA = 25°C
-10
10
ISET = 400µA, TA = 25°C
15
I(D-Match)
VTH
VF:D1:D4 = 3.6V
0.5
1
1X to 1.5X or 1.5X to 2X Transition
Threshold at Any ISINK Pin
150
mV
Charge Pump Section
TSS
FCLK
Soft-Start Time
100
µs
Clock Frequency
1000
kHz
EN/SET
VEN(L)
Enable Threshold Low
Enable Threshold High
EN/SET Low Time
VIN = 2.7V
VIN = 5.5V
0.4
75
V
V
VEN(H)
1.4
0.3
TEN/SET LO
µs
ns
µs
µs
µs
µA
TEN/SET
Minimum EN/SET High Time
Maximum EN/SET High Time
EN/SET Off Timeout
50
_
_
HI MIN
TEN/SET
75
500
500
1
_
_
HI MAX
TOFF
TLAT
EN/SET Latch Timeout
EN/SET Input Leakage
IEN/SET
-1
1. The AAT3166 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
2. Current matching is defined as the deviation of any sink current from the average of all active channels.
4
3166.2006.05.1.2
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Typical Characteristics
Unless otherwise noted, VIN = 3.5V, CIN = COUT = C1 = C2 = 1µF, TA = 25°C.
Efficiency vs. Supply Voltage
Turn-On to 1X Mode
(VIN = 4.2V; 18mA Load)
100
18mA
F = 3.4V
90
V
EN
(2V/div)
80
70
60
50
40
30
20
10
0
VOUT
(2V/div)
VSINK
(500mV/div)
5.1mA
F = 3.0V
V
350μA
F = 2.7V
IIN
(200mA/div)
V
2.5 2.8 3.0 3.3 3.5 3.8 4.0 4.3 4.5 4.8 5.0 5.3 5.5
Supply Voltage (V)
100μμs/div
Turn-On to 1.5X Mode
(VIN = 3.5V; 18mA Load)
Turn-On to 2X Mode
(VIN = 2.8V; 18mA Load)
EN
(2V/div)
EN
(2V/div)
VOUT
(2V/div)
VOUT
(2V/div)
VSINK
(500mV/div)
VSINK
(500mV/div)
IIN
(200mA/div)
IIN
(200mA/div)
100μs/div
100μs/div
Turn-Off from 1.5X Mode
(VIN = 3.5V; 18mA Load)
Current Matching vs. Temperature
19.0
18.8
18.6
18.4
18.2
18.0
17.8
17.6
17.4
17.2
17.0
EN
(2V/div)
Channel 2
VF
(1V/div)
Channel 3
Channel 4
Channel 1
IIN
(100mA/div)
-40
-20
0
20
40
60
80
100μs/div
Temperature (°C)
3166.2006.05.1.2
5
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Typical Characteristics
Unless otherwise noted, VIN = 3.5V, CIN = COUT = C1 = C2 = 1µF, TA = 25°C.
Load Characteristics
(VIN = 3.8V; 1.5X Mode; 18mA Load)
Load Characteristics
(VIN = 2.8V; 2X Mode; 18mA Load)
VIN
(40mV/div)
VIN
(40mV/div)
VOUT
(40mV/div)
VOUT
(40mV/div)
VSINK
(40mV/div)
VSINK
(40mV/div)
500ns/div
500ns/div
Load Characteristics
(VIN = 4.1V; 1.5X Mode; 27mA Load)
Load Characteristics
(VIN = 3.2V; 2X Mode; 27mA Load)
VIN
(40mV/div)
VIN
(40mV/div)
VOUT
(40mV/div)
VOUT
(40mV/div)
VSINK
(40mV/div)
VSINK
(40mV/div)
500ns/div
500ns/div
Input Ripple vs. Input Voltage
12
10
8
27mA
18mA
6
4
14mA
2
0
2.5
2.7
2.9
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
Input Voltage (V)
6
3166.2006.05.1.2
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Typical Characteristics
Unless otherwise noted, VIN = 3.5V, CIN = COUT = C1 = C2 = 1µF, TA = 25°C.
EN/SET Latch Timeout vs. Input Voltage
EN/SET Off Timeout vs. Input Voltage
400
350
300
250
200
150
100
50
350
300
250
200
150
100
50
-40°C
-40°C
25°C
85°C
25°C
85°C
0
0
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Input Voltage (V)
Input Voltage (V)
Enable Threshold High vs. Input Voltage
Enable Threshold Low vs. Input Voltage
1.2
1.1
1
1.2
1.1
1
-40°C
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
-40°C
25°C
85°C
25°C
85°C
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5
Input Voltage (V)
Input Voltage (V)
3166.2006.05.1.2
7
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Functional Block Diagram
C1+ C1- C2+ C2-
1X, 1.5X, 2X
Charge Pump
IN
OUTCP
Soft-Start
Control
1MHz
Oscillator
Voltage
Reference
D/A
D/A
D/A
D1
6 x 16 Bit
ROM
D2
D3
AS2Cwire
Interface
EN/SET
6 x 16 Bit
ROM
D/A
D4
GND
capacitors (C1 and C2), one 1µF ceramic input
capacitor (CIN), and one 0.33µF to 1µF ceramic
charge pump output capacitor (COUT).
Functional Description
The AAT3166 is a tri-mode load switch (1X) and
high efficiency (1.5X or 2X) charge pump device
intended for white LED backlight applications. To
maximize power conversion efficiency, an internal
sensing circuit monitors the voltage required on
each constant current sink input and sets the load
switch and charge pump modes based on the input
battery voltage and the current sink input voltage.
As the battery discharges over time, the AAT3166
charge pump is enabled when any of the four cur-
rent sink inputs near dropout. The charge pump
initially starts in 1.5X mode. If the charge pump
output drops enough for any current source output
to become close to dropout, the charge pump will
automatically transition to 2X mode. The AAT3166
requires only four external components: two 1µF
ceramic capacitors for the charge pump flying
The four constant current sink inputs (D1 to D4)
can drive four individual LEDs with a maximum cur-
rent of 27mA nominal each. Unused sink inputs
should be connected to OUTCP, otherwise the part
will operate only in 2X charge pump mode. The
AS2Cwire serial interface enables the AAT3166
and sets the current sink magnitudes. AS2Cwire
addressing allows independent control of two
groups of current sink input: D1~D3 and D4.
Constant Current Output Level Settings
The constant current sink levels for D1 to D4 are
set via the serial interface according to a logarith-
mic scale where each code is approximately 1.8dB
lower than the previous code. In this manner, LED
8
3166.2006.05.1.2
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
AS2Cwire Serial Interface
brightness appears linear with each increasing
code count. Because the inputs D1 to D4 are true
independent constant current sinks, the voltage
observed on any single given input will be deter-
mined by the actual forward voltage (VF) for the
LED being driven.
The current sink input magnitude of the AAT3166 is
controlled by AnalogicTech's Advanced Simple
Serial Control (AS2Cwire) serial digital input.
AS2Cwire adds addressing capability for multiple
data registers over the Simple Serial Control™
(S2Cwire™), which is capable of controlling only a
single register. The AAT3166 has four registers:
Bank1, Bank2, Max Current, and Low Current.
Since the input current sinks of the AAT3166 are
programmable, no PWM (pulse width modulation) or
additional control circuitry is needed to control LED
brightness. This feature greatly reduces the burden
on a microcontroller or system IC to manage LED or
display brightness, allowing the user to "set it and
forget it." With its high-speed serial interface (1MHz
data rate), the input sink current of the AAT3166 can
be changed successively to brighten or dim LEDs in
smooth transitions (e.g., to fade-out) or in abrupt
steps, giving the user complete programmability and
real-time control of LED brightness.
Three addresses are used to control the two regis-
ters. Address 0 addresses both registers simultane-
ously to allow the loading of both registers with the
same data using a single write protocol. Address 1
addresses Register 1 for D1 to D3 current level set-
tings. Address 2 addresses Register 2 for D4 cur-
rent level settings.
AS2Cwire relies on the number of rising edges of
the EN/SET pin to address and load the registers.
AS2Cwire latches data or address after the EN/SET
pin has been held high for time TLAT. Address or
data is differentiated by the number of EN/SET ris-
ing edges. Since the data registers are 4 bits each,
the differentiating number of pulses is 24 or 16, so
that Address 0 is signified by 17 rising edges,
Address 1 by 18 rising edges, and Address 2 by 19
rising edges. Data is set to any number of rising
edges between 1 and including 16. A typical write
protocol is a burst of EN/SET rising edges signify-
ing a particular address, followed by a pause with
EN/SET held high for the TLAT timeout period, a
burst of rising edges signifying data, and a TLAT
timeout for the data registers. Once an address is
set, then multiple writes consisting of data only
(without address) to the corresponding data regis-
ter are allowed. Address 0 is the default address
on the first rising edge after the AAT3166 has been
disabled. If data is presented on the first rising
edge with no prior address, both data registers are
simultaneously loaded.
The 16 individual current level settings are each
approximately 1.8dB apart (see Table 1). Code 1 is
full scale; Code 15 is full scale attenuated by
approximately 25dB; and Code 16 is reserved as a
"no current" setting.
27mA Max 18mA Max 14mA Max
Data
IOUT (mA)
IOUT (mA)
IOUT (mA)
1
2
27
22
18
14
12
10
8
18
15
14
11
3
12
8.8
7.1
6.0
4.8
3.8
3.1
2.6
2.1
1.7
1.4
1.2
1.0
0.7
0
4
10
5
7.9
6.3
5.1
4.1
3.5
2.9
2.2
1.9
1.6
1.3
1.0
0
6
7
8
6.2
5.2
4.3
3.3
2.9
2.4
1.9
1.4
0
9
10
11
12
13
14
15
16
The maximum current level is determined by the
value set in Register 3, the Max Current register.
Three scales are available for high operating cur-
rents with maximum current levels of 27mA, 18mA,
or 14mA. Each scale maintains approximately
1.8dB steps between settings. A separate mode is
Table 1: Current Level Settings.
3166.2006.05.1.2
9
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
available for ultra-low LED current operation.
When the Max Current register (Register 3) is set
to the Low Current setting, the Low Current regis-
ter (Register 4) must be programmed. The two
most significant bits of the Low Current register
control whether or not a given bank of current sinks
is enabled. The least two significant bits of the Low
Current register set the current level for both
banks. For low current settings, the charge pump
may be enabled if required by the battery voltage
and LED forward voltage conditions, and 1X mode
quiescent current is approximately 100µA for multi-
ple channels or 50µA for Channel 4 operation only.
Both banks of current sinks must be in the same
high or low current mode of operation.
Low Current Register (Address 4)
Main Low
Sub Low
Data
Current On Current On Current
1
2
No
No
No
No
3
No
No
4
No
No
5
No
Yes
Yes
Yes
Yes
No
115µA
175µA
280µA
400µA
115µA
175µA
280µA
400µA
115µA
175µA
280µA
400µA
6
No
7
No
8
No
9
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
10
11
12
13
14
15
16
No
No
When EN/SET is held low for an amount of time
greater than TOFF, the AAT3166 enters shutdown
mode and draws less than 1µA from VIN. Data and
Address registers are reset to 0 during shutdown.
No
Yes
Yes
Yes
Yes
AS2Cwire Serial Interface Addressing
Auto-Disable Feature
EN/SET
Address Rising Edges
Data Register
AAT3166
The AAT3166 is equipped with an auto-disable fea-
ture for each LED channel. After the IC is enabled
and started up, a test current of 120µA (typical) is
forced through each sink channel. The channel will
be disabled if the voltage of that particular SINK pin
does not drop to a certain threshold. This feature is
very convenient for disabling an unused channel or
during an LED fail-short event.
0
1
2
3
4
17
18
19
20
21
1&2: D1~D4 Current
1: D1~D3 Current
2: D4 Current
3: Max Current
4: Low Current
Data
Max Current
1
2
3
4
18mA
27mA
Thermal Protection
The AAT3166 has a built-in thermal protection cir-
cuit that will shut down the charge pump if the die
temperature rises above the thermal limit, as would
be the case during a short circuit of the OUTCP pin.
14mA
Low Current
(see Low Current Register for values)
10
3166.2006.05.1.2
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
AS2Cwire Serial Interface Timing
Address
Data
THI
TLAT
TLO
TLAT
EN/SET
Address
1
2
17
18
1
2 . . .
n <= 16
0
1
0
0
n - 1
Data Reg 1
Data Reg 2
Device Switching Noise Performance
Applications Information
The AAT3166 operates at a fixed frequency of
approximately 1MHz to control noise and limit har-
monics that can interfere with the RF operation of
cellular telephone handsets or other communica-
tion 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 solu-
tions. The AAT3166 soft-start feature prevents
noise transient effects associated with inrush cur-
rents during start-up of the charge pump circuit.
LED Selection
Although the AAT3166 is designed for driving white
LEDs, the device also can be used to drive most
types of LEDs with forward voltage specifications
ranging from 2.0V to 4.7V. LED applications may
include main and sub-LCD display backlighting,
camera photo-flash applications, color (RGB)
LEDs, infrared (IR) diodes for remotes, and other
loads benefiting from a controlled output current
generated from a varying input voltage. Since the
D1 to D4 input current sinks are matched with neg-
ligible voltage dependence, the LED brightness will
be matched regardless of the specific LED forward
voltage (VF) levels.
Capacitor Selection
Careful selection of the four external capacitors
(CIN, C1, C2, COUT) is important because they will
affect turn-on time, output ripple, and transient per-
formance. 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 programmed only for light current lev-
els, then the capacitor size may be decreased.
In some instances (e.g., in high-luminous-output
applications such as photo flash), it may be neces-
sary to drive high-VF type LEDs. The low-dropout
current sinks in the AAT3166 make it capable of
driving LEDs with forward voltages as high as 4.7V
at full current from an input supply as low as 3.0V.
Outputs can be paralleled to drive high-current
LEDs without complication.
3166.2006.05.1.2
11
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Capacitor Characteristics
Ceramic Capacitor Materials
Ceramic composition capacitors are highly recom-
mended over all other types of capacitors for use
with the AAT3166. Ceramic capacitors offer many
advantages over their tantalum and aluminum elec-
trolytic 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 con-
nection damage.
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 val-
ues 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
AAT3166 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.
Equivalent Series Resistance
ESR is an important characteristic to consider when
selecting a capacitor. ESR is resistance internal to
a capacitor that is caused by the leads, internal con-
nections, 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.
12
3166.2006.05.1.2
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
Ordering Information
Package
Marking1
Part Number (Tape and Reel)2
AAT3166IWP-T1
TDFN33-12
PXXYY
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/pbfree.
Package Information
TDFN33-12
Index Area
(D/2 x E/2)
Detail "B"
0.3 0.10 0.16 0.375 0.125
0.075 0.075
0.1 REF
3.00 0.05
1.70 0.05
Detail "A"
Top View
Bottom View
Pin 1 Indicator
(optional)
7.5° 7.5°
Detail "B"
Option A:
Option B:
C0.30 (4x) max
Chamfered corner
R0.30 (4x) max
Round corner
0.05 0.05
Detail "A"
Side View
All dimensions in millimeters.
1. XYY = assembly and date code.
2. Sample stock is generally held on part numbers listed in BOLD.
3166.2006.05.1.2
13
AAT3166
High Efficiency 1X/1.5X/2X Charge
Pump for White LED Applications
© 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.
Customers are advised to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold sub-
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tered trademarks or trademarks of their respective holders.
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830 E. Arques Avenue, Sunnyvale, CA 94085
Phone (408) 737-4600
Fax (408) 737-4611
14
3166.2006.05.1.2
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