Charge Pump. AAT3129 Datasheet

AAT3129 Pump. Datasheet pdf. Equivalent

AAT3129 Datasheet
Recommendation AAT3129 Datasheet
Part AAT3129
Description High Efficiency 1X/1.5X/2X Charge Pump
Feature AAT3129; High Efficiency 1X/1.5X/2X Charge Pump for RGB Color LED Applications General Description The AAT312.
Manufacture AAT
Datasheet
Download AAT3129 Datasheet




AAT AAT3129
AAT3129
High Efficiency 1X/1.5X/2X Charge Pump
for RGB Color LED Applications
General Description
Features
ChargePump
The AAT3129 is a high efficiency charge pump
DC/DC converter with tri-mode load switch (1X)
• VIN Range: 2.7V to 5.5V
• Common Anode RGB LED Control
fractional (1.5X) and doubling (2X) conversion for
• 4096 Color with Single Wire Digital Control
color LED applications. A single current source out-
• 40mA to 180mA Fixed Current Source
put provides a regulated current to drive R, G, and
• AS2Cwire Digital Brightness Control
B LEDs via three internal switches. With a simple
• Low Noise Constant Frequency Operation
single wire serial bus, the RGB module can be eas-
• Small Application Circuit
ily controlled to display 4096 colors.
• Regulated Output Current
AnalogicTech's Advanced Simple Serial Control™
(AS2Cwire™) serial digital input is used to enable,
disable, and set the duty cycle of each internal
MOSFET switch. Low external parts count (two
• No Inductors
• 1MHz Switching Frequency
• IQ <1μA in Shutdown
• 12-Pin TSOPJW Package
1μF flying capacitors and two small bypass capac-
itors at VIN and OUT) makes the AAT3129 ideally
suited for small battery-powered applications.
The AAT3129 has a thermal management system
Applications
to protect the device 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. High switching frequency enables
the use of small external capacitors. A low current
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shutdown feature disconnects the load from VIN
and reduces quiescent current to less than 1μA.
Fashion RGBs
Mobile Handsets
MP3 Players
PDAs
Portable Devices
RGB Color LEDs
RGB Photo Flash
The AAT3129 is available in a Pb-free, 12-pin
• Smart Phones
TSOPJW package.
Typical Application
VIN ISRC
C1+
VBAT
CIN CP
C1
1μF
AAT3129
1μF
CCP
1μF
C1-
C2+
RG B
C2
1μF
C2-
EN/SET
EN/SET
DR
DG
DB
GND
3129.2007.01.1.4
1



AAT AAT3129
AAT3129
High Efficiency 1X/1.5X/2X Charge Pump
for RGB Color LED Applications
Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
Symbol
C2+
CP
C1-
C1+
ISRC
EN/SET
DB
DG
DR
GND
IN
C2-
Function
Flying capacitor 2 positive terminal. Connect a 1μF capacitor between C2+ and C2-.
Charge pump output. Requires 1μF capacitor connected between this pin and
ground.
Flying capacitor 1 negative terminal.
Flying capacitor 1 positive terminal. Connect a 1μF capacitor between C1+ and C1-.
Current source output.
AS2Cwire control pin.
Open drain switch blue diode cathode.
Open drain switch green diode cathode.
Open drain switch red diode cathode.
Ground.
Input power supply. Requires 1μF capacitor connected between this pin and ground.
Flying capacitor 2 negative terminal.
Pin Configuration
TSOPJW-12
(Top View)
C2+
CP
C1-
C1+
ISRC
EN/SET
1
2
3
4
5
6
12 C2-
11 IN
10 GND
9 DR
8 DG
7 DB
2 3129.2007.01.1.4



AAT AAT3129
AAT3129
High Efficiency 1X/1.5X/2X Charge Pump
for RGB Color LED Applications
Absolute Maximum Ratings1
Symbol
VIN
VCP
VEN/SET
VEN/SET(MAX)
TJ
TLEAD
Description
Input Voltage
Charge Pump Output
EN/SET to GND Voltage
Maximum EN/SET to Input Voltage
Operating Junction Temperature Range
Maximum Soldering Temperature (at leads, 10 sec)
Value
-0.3 to 6
-0.3 to 6
-0.3 to 6
0.3
-40 to 150
300
Units
V
V
V
V
°C
°C
Thermal Information
Symbol
PD
θJA
Description
Maximum Power Dissipation2, 3
Thermal Resistance
Value
625
160
Units
mW
°C/W
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at condi-
tions other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Mounted on an FR4 board.
3. Derate 6.25mW/°C above 25°C.
3129.2007.01.1.4
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