THV6520 Datasheet, PDF (1/11 Pages) THine Electronics, Inc. – THV6520 is a controller IC power supply system with

THV6520_Rev.1.00_E
THV6520
Boost converter / Charge pump
Description
THV6520 is a controller IC power supply system with
boost converter and charge pump circuit.
The charge pump provide regulated TFT LCD
gate-on and gate-off supplies. The chip includes a
VCOM buffer and a gate slop circuit and LDO.
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 : 16V
Switching limit current : 2A
Feedback voltage accuracy : +/-1%
Switching frequency : 640kHz / 1.2MHz
・Charge pump
Feedback voltage accuracy : +/-2%
Switching frequency : 320kHz / 600kHz
・LDO
Feedback voltage accuracy : +/-1.3%
Output short-circuit current : 350mA
・Buffer amplifier
Output short-circuit current : +/-90mA
・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
LX 1
VCC 2
18 AVDD
17 VGH_OUT
SS 3
AGND 4
LDO_FB 5
Exposed Thermal Pad
(Top view)
25 GNDEXP
16 VGH_FB
15 V_VGH
14 GOUT
LDO 6
13 RE
7
8
9 10 11 12
Block Diagram
VIN
VLS
VCC
SS
VIN
DIN
DOUT
LDO
DC
GDELAY
GIN
OSC
VIN
V_LDO
LDO
LDO_FB
FB
PC
LX
Boost
OSC
PGND
UVLO
AVDD
Detector
VCC
OSC
OSC
1/2OSC
1/2OSC
VGH_OUT
VGH_FB
Gate
slope
V_VGH
GOUT
GR
VGHM
VLS
AVDD
AMP_NON
AMP_OUT VCOM
VGH
AGND
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