Product Summary

The THV3051A is a 3ch Buck/Boost/Inverting Controller IC which enables to design simple& low cost multi-channel power supply system. Ch-1 is fixed Boost, ch-2 is fixed Buck, ch-3 is selectable Buck/Boost/Inverting controller. These channels are PWM controllers and are designed to make phase compensation easy for output ceramic capacitors. Ch-4,6 are selectable Positive/Negative charge pumps and PFM controller. The applications of the THV3051A are TFT LCD Bias power supply.

Features

THV3051A features: (1)QFN 64 pin package; (2)Input Voltage range : 4.2~ 15V; (3)Push Pull output for direct Power Mos driving; (4)Optimized for ceramic output capacitor; (5)Complete PWM mode controller; (6)Positive/Negative charge pumps (selectable PFM-mode); (7)Adjustable switching frequency up to 1MHz; (8)Timer Latch Protection ; (9)System UVLO function; (10)Adjustable Soft Start time; (11)Adjustable TImer Latch Delay time; (12)Adjustable Dead Time Control; (13)Thermal Shotdown; (14)Ch-1, Boost converter; (15)Ch-2, Synchronous Buck converter; (16)Ch-3, Boost/Buck/Inverting converter; (17)High voltage LDO; (18)Op. Amp. for Gray Scale ; (19)Vcom Buffer Amplifier.

Diagrams

THV3051A block diagram