THV3543 Datasheet, PDF (1/19 Pages) THine Electronics, Inc. – 2 channel Buck/Boost 2 channel Charge Pump Controller

THV3543_Rev.1.00_E
THV3543
2 channel Buck/Boost 2 channel Charge Pump Controller
Description
THV3543 is a controller IC for multi-channel power
supply system which includes 2 channel DC/DC
converter with built-in power MOSFETs and 2
channel charge pump circuits.
THV3543 has internal soft start, under voltage
protection, over voltage protection and over current
protection.
CH-1 is a Boost DC/DC converter which can provide
two optional modes of output voltage: the adjustable
mode with external resistor or the fixed 15.6V mode
requires no external resistors.
CH-2 is a Buck DC/DC converter. Its output voltage
is fixed at 3.3V.
Positive charge pump (VGH) and negative charge
pump (VGL) can provide two optional modes of
output voltage: the adjustable mode with external
resistor or the fixed mode (VGH at 35.6V, VGL at
-6V) requires no external resistors.
THV3543 has LDO and operational amplifier which
can be used for Half AVDD or Vcom.
Thus THV3543 can produce various necessary
voltages for LCD panels and ideal for constructing
TFT-LCD Bias power supply system.
Features
ï½¥QFN40 package
･Input Voltage Range : 4.2～15V
ï½¥Boost Converter with built-in Power MOSFET
ï½¥Buck Converter with built-in Power MOSFET
500kHz Switching Frequency
Under Voltage Protection
Over Voltage Protection
Over Current Protection
ï½¥Positive/Negative Charge Pumps
ï½¥LDO
ï½¥Operational Amplifier
Pin Assignment
Applications
ï½¥LCD TV Bias Power Supply
ï½¥LCD Monitor Bias Power Supply
Connect the Exposed Pad to GND for enhanced
thermal performance.
Copyright© 2011 THine Electronics, Inc.
1/19
THine Electronics, Inc.