THV6531 Datasheet, PDF (1/11 Pages) THine Electronics, Inc. – THV6531 is a controller IC power supply system with

THL6531_Rev.1.01_E
THV6531
Boost converter / 2 channel charge pump
Description
THV6531 is a controller IC power supply system with
boost converter and 2 channel charge pump circuit.
The positive and negative charge pumps provide
regulated TFT LCD gate-on and gate-off supplies. The
chip includes a VCOM buffer and a gate slop circuit.
Soft start / Over current protection / Under voltage lock
out protection / Thermal shut down are built in.
Mounted area is reducible by 24-pin QFN.
Application
ï½¥Mobile phone display
・Car Navigator display
ï½¥Laptop/Netbook/Tablet PC display
Features
・Input voltage range : 2.5V – 5.5V
・Boost converter
Maximum output voltage : 18V
Switching limit current : 2.5A
Feedback voltage accuracy : +/-1%
Switching frequency : 1.2MHz
・Positive charge pump
Feedback voltage accuracy : +/-1.5%
Switching frequency : 600kHz
・Negative charge pump
Feedback voltage accuracy : +/-5%
Switching frequency : 600kHz
・Operational amplifier
Output short-circuit current : +/-200mA
・Gate slop
・Detector
・Protection circuit
Soft start
Over current protection
Under voltage lock out protection
Thermal shut down
・4mm x 4mm QFN 24pin package
Pin Configuration
24 23 22 21 20 19
AMP_NON 1
AMP_INV 2
18 PGND
17 FB
AMP_OUT 3
AGND2 4
AVDD 5
Exposed Thermal Pad
(Top view)
25 GNDEXP
16 PC
15 DIN
14 AGND1
VGH_OUT 6
13 VCC
7 8 9 10 11 12
Block Diagram
VIN
VLS
VGL
FB
PC
LX
VCC
VIN
DIN
Boost
OSC
PGND
UVLO
AVDD
DOUT
GDELAY
GIN
VREF
VGL_FB
Detector
VCC
1/2OSC
VREF
Gate
slope
OSC
OSC
1/2OSC
VGH_OUT
VGH_FB
V_VGH
GOUT
VGHM
GR
VLS
AVDD
VGL_OUT
AVDD
AMP_NON
AMP_OUT VCOM
1/2OSC
AGND1
AMP_INV
AGND2
VGH
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