AAT3172

High Current LED Flash Driver Charge Pump IC

Please note: this product is being discontinued and is not recommended for new designs.

The AAT3172 is a high output current, high efficiency, low noise, low profile charge pump DC/DC converter, ideal for multi-function LED photo-flash applications where solution cost, size, and efficiency are critical.

The dual charge pump in the AAT3172 is capable of delivering 600mA output current. Two current-controlled paths are available for users of dual flash LEDs that prefer current matching. Each LED channel can be easily programmed in 32 steps with a single GPIO output through the AS²Cwire™ (Advanced Simple Serial Control™) interface. This allows smooth transitions and flexible adjustment of brightness in flash or other lighting modes.

The tri-mode (1X/1.5X/2X) operation of the internal charge pump offers excellent power efficiency for both flash and movie modes. Combined with a low external parts count (two 1µF flying capacitors and one small bypass capacitor at V_IN and OUT), the AAT3172 is ideally suited for small, battery-powered applications.

The AAT3172 has a thermal management system to protect the device in the event of a short-circuit condition at the output pin. Built-in soft-start circuitry prevents excessive inrush current during start-up. The shutdown feature disconnects the load from V_IN and reduces quiescent current to less than 1.0µA.

The AAT3172 is available in the Pb-free, thermally-enhanced, 12-pin 3x3mm TDFN package.

Please note: AAT3172 is not recommended for new designs.

Data Sheets Receive a sample

Talk to Sales ECAD Model

Specifications

Flash I_OUT Total (mA)600

Movie Mode I_OUT Total (mA)100

LED Channels2

Min. V_IN (V)2.7

Max. V_IN (V)5.5

Max. V_OUT (V)4.9

InterfaceAS²Cwire™

Max. Shutdown Current (μA)1

Typ. I_Q (μA)300

Peak Efficiency93%

PackageTDFN, 12L

Package (mm)3 x 3 x 0.75

PackageTDFN33-12

Features

V_INRange: 2.7V to 5.5V
600mA Output Current
Tri-Mode 1X/1.5X/2X in Current Mode
Voltage Mode Operation: 1.5X, 100mA
Dual Regulated Current Sinks
Current Match Between Current Sinks
32 Current Steps Set by AS²Cwire
1µF Input, Output, and Flying Capacitors
<1.0µA of Shutdown
Small Application Circuit
No Inductors
Automatic Soft Start
12-Pin TDFN 3x3mm Package
-40°C to +85°C Temperature Range

Product Documents

Applications

Cameras

See all

Sales Help
Technical Help

Find Your Sales Representative and Distributor
Consult with your Skyworks sales representative or distributor to find the best solution for your design.

Request a Quote
Get a quote for the specific products and quantities you need.

Working with Skyworks
Learn more about our purchase process to navigate quickly and efficiently

Support and Resources
Explore Skyworks support options, consult with our global sales and channel partners, and get the resources and expert guidance and custom development services you need to help you with your next innovation.

Technical Documents
Explore application notes, block diagrams, data sheets, user guides, ADS model calculators, installation references, S parameters and more.

Product Lifecycle Status Lookup
Lookup the product lifecycle status of Skyworks part number

Certificate of Conformance
Look up a product’s Certificate of Conformance for information such as REACH, RoHS, IEC 624741 and more.

Engineer examining electrical components

Previously Visited Products

New and Featured Products

Previously Visited Applications

New and Featured Applications