AAT3112 Buy Now
500mA High Efficiency Charge Pump for White LED Flash Applications

The AAT3112 is a member of AnalogicTech’s Total Power Management IC™ (TPMIC™) family. It is a dual voltage doubling charge pump that provides a regulated output voltage. It operates with an input voltage range of 2.7 to 5.0 volts. The device can deliver a constant 200mA output load current and up to 500mA of pulsed current. The 500mA peak current capability of the AAT3112 makes it ideal for white LED flash applications. A low external parts count (two 1µF flying capacitors and two small capacitors at VIN and VOUT) makes the AAT3112 ideally suited for small battery-powered applications.

The AAT3112 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. A high charge pump switching frequency enables the use of very small external capacitors. A low current shutdown feature disconnects the load from VIN and reduces quiescent current to less than 1μA.

The AAT3112 is available in a Pb-free 16-pin 3x3mm QFN package and is rated over the -40°C to +85°C temperature range.

Please note: AAT3112 is not recommended for new designs. Please contact sales with regards to replacement parts.

Features

  • VIN Range: 2.7V to 5.5V
  • AAT3112-5.0: 2.7V to 5.0V
  • AAT3112-4.5: 2.7V to 4.5V
  • Up to 500mA Peak Output Current
  • 200mA Continuous Output Current
  • IQ < 1µA in shutdown
  • Regulated 4.5V output
  • 26µA of quiescent current
  • Small application circuit
  • Automatic soft-start
  • No inductors
  • Short circuit/over-temperature protection
  • 16-pin 3x3 QFN package
  • Temperature Range: -40°C to +85°C
Data Sheets AAT3112 Data Sheet 202096A.pdf (1704 KB)
Designer Info AAT3112 Block Diagram AATI_BD_150.jpg (35 KB)
Designer Info AAT3112 Gerber File AATI_Gerber_150.zip (30 KB)
ProductName : AAT3112
Flash IOUT Total (mA) : 500
Movie Mode IOUT Total (mA) : 200
LED Channels : 2
Min. VIN (V) : 2.7
Max. VIN (V) : 5
Max. VOUT (V) : 5
Interface : Enable
Max. Shutdown Current (μA) : 1
Typ. IQ (μA) : 26
Peak Efficiency : 85%
Package : QFN33-16
Package (mm) : QFN 16L, 3 x 3 x 0.85
Product Information:
For world-class customer service and assistance finding the Skyworks product to fit your specific design needs, please submit your request, or contact us by phone.
USA: 781-376-3000
Asia: +886 2 2322 0200
Europe: +33(0) 1 43548540