ISL98604 Datasheet, PDF (1/28 Pages) Intersil Corporation – 6-Channel Integrated LCD Supply

6-Channel Integrated LCD Supply
ISL98604
The ISL98604 is a high power, fully programmable 6-Channel
output control IC targeted at large panel LCD displays. The
ISL98604 integrates a high power, boost converter and delay
switch for AVDD generation, one VIO asynchronous buck
regulator, two synchronous buck regulators for HAVDD and
VCORE supply generation, and linear regulator controllers for V_ON
and V_OFF charge pumps.
Operating at 750kHz, the AVDD boost converter features a 4.0A
boost FET and 6-bit resolution programmable from 12.7V to
19.0V. The delay switch is also integrated for power sequence.
The asynchronous buck converter for VIO supply features an
integrated 2A FET. It also operates at 750kHz internal clock and
compensation features.
The two synchronous bucks are integrated with controller,
upper, and lower side switches for HAVDD and VCORE
generation with internal compensation. The HAVDD and
VCORE outputs are both programmable ranging from 6.4V to
9.55V and 0.9V to 2.4V, respectively.
Dual linear regulator controllers are provided to allow generation
of accurate V_ON and V_OFF voltages in conjunction with external
charge pumps and bipolar power transistors. V_ON output voltage
can be compensated adoptively by temperature sensing.
All output voltages are programmed through IIC and stored in
EEPROM. Alternative factory set voltages are available for
ISL98604; please contact Consumer Product Marketing via email
at [e-mail].
Features
• 8V to 16.5V input supply
• AVDD boost up to 19.0V, with integrated 4.0A_PEAK FET
• HAVDD synchronous buck for 8V with 1A_PEAK FET
• Overvoltage protection (OVP)
• Internal AVDD delay FET
• Dual linear regulator controllers for V_ON and V_OFF
• V_ON temperature compensation
• VIO buck with integrated 2A_PEAK FET
• VCORE synchronous buck with integrated 1A_PEAK FET
• Internal feedback and compensation
• Programmable output control with IIC
• Programmable sequencing with IIC
• UVLO and OTP protection
• Thermally enhanced 5x5 Thin QFN package
• Pb-free (RoHS compliant)
Applications
• LCD TV
Pin Configuration
ISL98604
(40 LD 5x5 TQFN)
TOP VIEW
40 39 38 37 36 35 34 33 32 31
EN 1
30 VCORE
TCOMP 2
29 SDA
VDC 3
28 SCL
AGND 4
27 A0
AVIN 5
PVIN3 6
THERMAL
PAD
26 PG
25 NC
NC 7
24 DRVN
PHASE1 8
23 NC
HAVDD 9
22 FBN
PGND3 10
21 FBP
11 12 13 14 15 16 17 18 19 20
December 17, 2012
1
FN7687.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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