AP2061AEC Datasheet, PDF (1/29 Pages) Asahi Kasei Microsystems – 2.0A High-side LED Driver for Camera Flash with I2C

[AP2061AEC]
AP2061AEC
2.0A High-side LED Driver for Camera Flash with I²C
1. Genaral Description
The AP2061 is a white LED driver IC for camera flash applications of portable equipment. The device
integrates a current mode synchronous boost DC-DC converter and maximum 2A current sources. The internal
boost DC-DC converter integrates a switching FET and synchronous rectifier, and supports a small size
multilayer inductor with 4MHz switching frequency. The internal current sources allow for grounded cathode
connections for easier heat dissipation and simple LED arrangement. The AP2061 includes eight protections
that are LED thermal detection, inductor current limitation, input voltage detection, over voltage protection,
under voltage lock out, device thermal protection, LED open/short protection and output-ground short
protection to avoid significant system problems. Flash current, torch current, inductor limit current and flash
on-time is programmable through I²C interface. The AP2061 is housed in a small size package (16-pin CSP:
1.56mm x 1.56mm, 0.4mm pitch), saving much space on a system board.
2. Features
 Power Supply Voltage:
VIN = 2.7V to 5.5V
 LED Current:
 High-Side Current Source
Total I_LED = 2.0A (max), I_LED/ch = 1.0A/ch (max)
 High Efficiency
 Switching Frequency:
Frequency= 4.0 MHz
— Support small size inductor
 Automatically Selected Working Mode (DC-DCBypass)
 Synchronization With RF power-Amplifier Pulse
 Input Voltage Detection Function
 I²C Function:
— Flash LED current setting
— Torch LED current setting
— Flashing on-time setting
— Current limit value setting
— LED thermal detection voltage setting
— Battery detection voltage setting
— Error read support
 Protection Function:
— LED thermal detection
— Inductor current limit
— Input voltage detection
— Over voltage protection (OVP)
— Under voltage lock out (UVLO)
— Thermal shutdown
— LED open/short
— Output-ground short
 Operation Temperature :
Ta: -30 to 85C
 Package:
16-pin CSP (1.56 x 1.56mm, 0.4mm pitch)
MS1603-E-00
-1-
2014/01