LP8553
www.ti.com SNVS701B – SEPTEMBER 2011 – REVISED JANUARY 2014 LP8553 High-Efficiency LED Backlight Driver for Notebooks
Check for Samples: LP8553 FEATURES APPLICATIONS 1 2 High-Voltage DC/DC Boost Converter with
Integrated FET with Four Switching Frequency
Options: 156/312/625/1250 kHz
2.7V to 22V Input Voltage Range to Support
1x…5x Cell Li-Ion Batteries
Programmable PWM Resolution
– 8 to 13 True Bit (Steady State)
– Additional 1 to 3 Bits Using Dithering
During Brightness Changes
I2C and PWM Brightness Control
Automatic PWM & Current Dimming for
Improved Efficiency
PWM Output Frequency and LED Current Set
Through Resistors
Optional Synchronization to Display VSYNC
Signal
4 LED Outputs with LED Fault (Short/Open)
Detection
Low Input Voltage, Over-Temperature, OverCurrent Detection and Shutdown
Minimum Number of External Components
DSBGA 25-Bump Package, 2.466 x 2.466 x …
