Skyworks Solutions, Inc.: LED Camera Flash Driver: AAT1274: AAT1274IWO-T1

Power Electronics Products from CDI

1.5A Single Flash LED Driver IC
Manufacturer: Skyworks Solutions, Inc.
Status: Standard
Data Sheet: AAT1274IWO-T1 Data Sheet
RoHS Compliance: Skyworks Solutions, Inc., AAT1274IWO-T1, LED Camera Flash Driver, 1.5A Single Flash LED Driver IC (Rohs Compliant), Component Distributors Inc. (CDI) Yes
Serial Boost
Flash Iout Total:
1500 mA
Movie Mode Iout Total:
206 mA
# LED Channels:
Vin Min:
2.7 V
Vin Max:
5.5 V
Vout Max:
5.5 V
IQ (typ):
230 µA
Shutdown Current:
1 µA
Peak Efficiency:
88 μH
Also Available
Part FunctionPart NumberDescription
Evaluation Board AAT1274IWO-DB1 Skyworks Solutions, Inc. Demo board for AAT1274IWO-T1
The AAT1274 is a high-efficiency, 1.5A high-current boost converter for LED photo flash applications. It maintains output current regulation by switching the internal high-side and low-side switch transistors, pulsewidth modulated at a fixed frequency of 2MHz. The high switching frequency allows the use of a small external inductor and output capacitor, making the AAT1274 ideally suited in all single cell, Li-ion-powered applications. Skyworks' proprietary AS 2 Cwire™ (Advanced Simple Serial Control™) serial digital interface is used to enable, disable, configure, and program the operation of the AAT1274. Using the AS2Cwire interface, the movie-mode current level for each LED, and the flash-to-movie-mode current ratio can be programmed to one of 16 levels. The AAT1274 includes a separate Flash Enable input to initiate the flash operation and a Flash Inhibit pin which reduces the flash current to movie-mode levels during high battery demand. The maximum flash and movie-mode current is set by one external resistor where the ratio of flash to moviemode current is set at approximately 7.3:1. The AAT1274 can drive one high current LED. The AAT1274 contains a thermal management system to protect the device in the event of an output short-circuit condition. Built-in circuitry prevents excessive inrush current during start-up. The shutdown feature reduces quiescent current to less than 1.0μA. The AAT1274 is available in a Pb-free, thermally-enhanced TDFN33-14 package and operates over the -40°C to 85°C temperature range.
1 - 99 $0.794
100 - 499 $0.646
500 - 2499 $0.605
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Package Format
DescriptionUnits Per FormatAvailable
(T/R) 1500 0