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; DATA SHEET AAT3129 High Efficiency 1X/1.5X/2X Charge Pump for RGB Color LED Applications General D.
Manufacture Skyworks
Datasheet
Download AAT3129 Datasheet




Skyworks AAT3129
DATA SHEET
AAT3129
High Efficiency 1X/1.5X/2X Charge Pump for RGB Color LED Applications
General Description
The AAT3129 is a high efficiency charge pump DC/DC
converter with tri-mode load switch (1X) fractional
(1.5X) and doubling (2X) conversion for color LED appli-
cations. A single current source output provides a regu-
lated current to drive R, G, and B LEDs via three internal
switches. With a simple single wire serial bus, the RGB
module can be easily controlled to display 4096 colors.
Skyworks' 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 1μF flying capacitors and two small
bypass capacitors at VIN and OUT) makes the AAT3129
ideally suited for small battery-powered applications.
The AAT3129 has a thermal management system to pro-
tect 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 shutdown feature disconnects
the load from VIN and reduces quiescent current to less
than 1μA.
The AAT3129 is available in a Pb-free, 12-pin TSOPJW
package.
A typical application circuit is shown in Figure 1. The pin
configurations are shown in Figure 2. A functional block
diagram of the AAT3129 is provided in Figure 3.
Features
VIN Range: 2.7V to 5.5V
• Common Anode RGB LED Control
• 4096 Color with Single Wire Digital Control
• 40mA to 180mA Fixed Current Source
AS2Cwire Digital Brightness Control
• Low Noise Constant Frequency Operation
• Small Application Circuit
• Regulated Output Current
• No Inductors
• 1MHz Switching Frequency
IQ <1μA in Shutdown
• 12-Pin TSOPJW Package
Applications
• Fashion RGBs
• Mobile Handsets
• MP3 Players
• PDAs
• Portable Devices
• RGB Color LEDs
• RGB Photo Flash
• Smartphones
Typical Application
VIN ISRC
C1+
VBAT
C4 CP
C1
1µF
AAT3129
1µF
C3
1µF
C1-
RG B
C2+
C2
1µF
C2-
EN/SET
EN/SET
DR
DG
DB
GND
Figure 1. Typical Application Circuit.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202264B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • February 21, 2013
1



Skyworks AAT3129
DATA SHEET
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
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
Figure 2. AAT3129 Pinout 12-Pin TSOPJW
(Top View).
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
2
202264B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • February 21, 2013



Skyworks AAT3129
DATA SHEET
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
JA
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 conditions 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.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
202264B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • February , 2013
3







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