器件名称: PS1313
功能描述: High Efficiency, High Power White-LED Driver
文件大小: 171.84KB 共9页
简 介:PS1313 High Efficiency, High Power White-LED Driver
FEATURES
On Board Power MOSFET Drives up to 4 strings of parallel LEDs Up to 87% Efficiency 1.4MHz Fixed Switching Frequency Open Load Shutdown Low 100mV Feedback Voltage Soft Start PWM Dimming Control UVLO, Thermal Shutdown Internal Circuit Limit Available in SOT26 Package WLED Backlight Cell Phones Handheld Computers and PDAs Digital Cameras Small LCD Displays LED Module Game Devices
DESCRIPTION
APPLICATIONS
The PS1313 is a step up converter designed for driving up to 4 branches with 4 white LEDs in series in each branch, providing backlight in cell phones, PDAs, and other hand-held devices. The PS1313 uses current mode, fixed frequency architecture to regulate the LED current, which is measured through an external current sense resistor. Its low 100mV feedback voltage reduces power loss and improves efficiency. The OV pin monitors the output voltage and turns off the converter if an overvoltage condition is present due to an open circuit condition. The PS1313 includes under-voltage lockout, current limiting and thermal overload protection preventing damage in the event of an output overload. The PS1313 is available in small 6-pin SOT26 Package.
TYPICAL APPLICATION CIRCUIT
Fig: Typical Application Circuit with 20mA Output
July 2007
www.picsemi.com 2007 Power IC. All Rights Reserved.
1
PS1313
Fig: PS1313 for Innolux 8” Panel LED Back light unit
PIN CONFIGURATION
PIN DESIGNATOR
Name SW GND FB ……
