PCN20071201

Features:

          l   Integrated OLED and White-LED Driver
          l   Wide Input Voltage Range: 2.7V to 5.5V
          l Adjustable Output Voltage up to 20V
          l   Complete Protection: OVP, OTP, UVP,OCP
          l   PWM Dimming Control
          l   Small External Components
          l   Cycle-By-Cycle Current Limit
          l   All AME's Lead Free Products Meet RoHS
               Standards


Application

      l White LED Back-Lighting
      l Hand-held Devices
      l Digital Cameras
      l Flip-phones / Clam-shell Cellular Phones
      l High-fashion cellular phones


Description

The AME5136 is a dual Boost DC/DC converter, de-
signed to drive up to 4 white LEDs with a constant cur-
rent and to power an organic LED display with a constant
voltage. According to SEL pin status, the AME5136 can
either regulates output current flowing through series con-
nected LEDs or regulate output voltage applying to OLED.
A single external resistor is used to set the maximum
LED current. The LED current of AME5136 can be adjusted by apply-
ing a PWM signal to the EN pin. Pulling the EN pin to
GND disables the chip and reduces the supply current to
less than 1mA. Additional features of AME5136 include a low-side
NFET switch that can turn off the LED string with no DC
current path to ground. Other features include OVP, OCP,
UVP and OTP.
The AME5136 is available in a small DFN-10(
3mmx3mmx0.75mm) package.