Skyworks Solutions, Inc.: LED Camera Flash Driver: AAT3175: AAT3175IWP-T1

Power Electronics Products from CDI

AAT3175IWP-T1
High Efficiency 1X/1.5X/2X Charge Pump for White LED Flash Applications
Manufacturer: Skyworks Solutions, Inc.
Status: Obsolete
Data Sheet: AAT3175IWP-T1 Data Sheet
RoHS Compliance: Skyworks Solutions, Inc., AAT3175IWP-T1, LED Camera Flash Driver, High Efficiency 1X/1.5X/2X Charge Pump for White LED Flash Applications (Rohs Compliant), Component Distributors Inc. (CDI) Yes
Specifications
Type:
Charge Pump
Flash Iout Total:
300 mA
# LED Channels:
4
Vin Min:
2.7 V
Vin Max:
5.5 V
IQ (typ):
300 µA
Interface:
S2Cwire™
Shutdown Current:
1 µA
Peak Efficiency:
95 μH
Package:
TDFN33-12
Also Available
Part FunctionPart NumberDescription
Evaluation Board AAT3175IWP-DB1 Skyworks Solutions, Inc. Demo board for AAT3175IWP-T1
The AAT3175 is a low noise, constant frequency charge pump DC/DC converter that uses a tri-mode load switch (1X), fractional (1.5X), and doubling (2X) conversion to maximize efficiency for white LED flash applications. The AAT3175 is capable of driving up to three flash LEDs at 300mA total current from a 2.7V to 5.5V input. A low external parts count (two 1µF flying capacitors and two small 1µF capacitors at V IN and V OUT ) make this part ideally suited for small, battery-powered applications. AnalogicTech's S²Cwire™ (Simple Serial Control™) serial digital input is used to enable, disable, and set current for all LEDs with 16 level settings down to 0. The AAT3175 is equipped with built-in protection for V OUT short-circuit condition and auto-disable for load short-circuit condition on any one of the channels. Built-in soft-start circuitry prevents excessive inrush current during start-up. A low-current shutdown feature disconnects the load from V IN and reduces quiescent current to less than 1µA. The AAT3175 is available in a Pb-free, space-saving, thermally-enhanced 12-pin 3x3mm TDFN package.
Pricing
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