DATASHEET
TFT-LCD Supply + DCP + VCOM Amplifier + Gate Pulse
Modulator + RESET
ISL97649AR5566
Features
The ISL97649AR5566 is an Integrated Power Management IC
(PMIC) for TFT-LCDs used in notebooks, tablet PCs and monitors.
• 2.5V to 5.5V input
• 1.5A, 0.18Ω integrated boost FET
The device integrates a boost converter for generating A
LDO for VLOGIC. VON and VOFF are generated by a charge pump
driven by the switch node of the boost. The ISL97649AR5566
, an
VDD
• V /V
ON OFF
supplies generated by charge pumps driven by the
boost switch node
also includes a V slice circuit, reset function and a high
• LDO for VLOGIC channel
ON
performance VCOM amplifier with DCP (Digitally Controlled
Potentiometer) that is used as a VCOM calibrator.
• 600/1200kHz selectable switching frequency
• Integrated gate pulse modulator
• Reset signal generated by supply monitor
• Integrated VCOM amplifier
• DCP
The AVDD boost converter features a 1.5A/0.18Ωboost FET with
600/1200kHz switching frequency.
The logic LDO includes a 350mA FET for driving the low voltage
needed by external digital circuitry.
2
- I C serial interface, address: 0101000, MSB left
The gate pulse modulator can control the gate voltage up to 30V,
and both the rate and slew delay times are selectable.
- Wiper position stored in 8-bit nonvolatile memory and
recalled on power-up
The supply monitor generates a reset signal when the system is
powered down.
- Endurance, 1,000 data changes per bit
• UVLO, UVP, OVP, OCP and OTP protection
• Pb-free (RoHS compliant)
• 28 Ld 4x5 QFN
2
It provides a programmable VCOM with I C interface. One VCOM
amplifier is also integrated in the chip. The output of the VCOM is
powered up with the voltage at the last programmed 8-bit
EEPROM setting.
Applications
• LCD notebook, tablet and monitor
VIN
AVDD
L1 10µH
C ,
20µF
C ,
30µF
,
6
1
2
D1
4
5
C
0.1µF
7
AVDD
SW
LX
R
1
VIN
73.2k
C
32
0.1µF
PGND
AVDD BOOST
CONTROLLER
VIN
EN
SS
R
2
8.06k
SEQUENCER
FREQ
FB
COMP
R
12
5.5k C 15nF
20
D4
Q1
L_IN
VOFF
LDO VIN
C
1µF
C
VLOGIC
25
16
1µF
C
0.1µF
11
C
1µF
15
R
1k
6
Z1
L_OUT
VLOGIC
SW
AVDD
LDO
C
24
C
8
C
10
47nF
2.2µF
47nF
R
17
8.25k
VON
R
18
3.92k
D2
D3
C
12
1µF
C
9
VFLK
VGH
ADJ
1µF
C
17
1nF
VDPM
C
28
0.1µF
SCL
C
100pF
CE
RE
14
GPM
R
9
SDA
RSET
POS
10k
VGH GPM
R
100k
5
DCP
VGHM
R
22
22k
GPM_LO
133k
AVDD
VGH
C
R
83k
18
7
R
8
0.47µF
85k
R
100k
26
R
AVDD
OUT
14
VDIV
AVDD
VIN
VCOM
VOLTAGE
DETECTOR
C
19
VCOM OP
OPEN
NEG
0.47µF
R
15
115k
CD2
C
26
1nF
RESET
RESET
THERMAL PAD
R
16
10k
VLOGIC
FIGURE 1. APPLICATION DIAGRAM
September 11, 2015
FN8774.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
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