DATASHEET
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 may be available for the
ISL98604.
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
PHASE2
PGND4
30 VCORE
29 SDA
28 SCL
27 A0
THERMAL
PAD
26 PG
25 NC
24 DRVN
23 NC
22 FBN
21 FBP
11 12 13 14 15 16 17 18 19 20
SS
COMP
PGND2
PGND1
DRVP
SWIN
SWO
SW2
SW1
NC
PVIN1
PVIN2
SWB2
SWB1
NC
NC
40 39 38 37 36 35 34 33 32 31
EN 1
TCOMP 2
VDC 3
AGND 4
AVIN 5
PVIN3 6
NC 7
PHASE1 8
HAVDD 9
PGND3 10
April 9, 2015
FN7687.1
1
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 2012, 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
NC
VIO
ISL98604
Table of Contents
Pin Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pin Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Typical Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Typical Performance Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Test Circuits and Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Applications Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Boost Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HAVDD Synchronous Buck Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VIO Buck Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VCORE Buck Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
ON
Linear-Regulator Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
OFF
Linear-Regulator Controller and Charge Pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Calculation of the Linear Regulator Base-Emitter Resistors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VON/VOFF Charge Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VON Temperature Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I
2
C Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Start-Up Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Layout Recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
15
16
17
18
19
19
19
19
20
20
25
25
Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
About Intersil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Package Outline Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
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ISL98604
Pin Descriptions
PIN #
1
2
3
4
5
6
7, 19,
23, 25,
34, 37,
40
8
9
10
11
12
13, 14
15, 16
17
18
20
21
22
24
26
27
28
29
30
31
32
33
35, 36
38, 39
-
SYMBOL
EN
TCOMP
VDC
AGND
AVIN
PVIN3
NC
IC enable pin; pull high to enable all the outputs.
Temperature compensation input, connect NTC resistor in the resistor ladder from VDC to GND to set the curve of
V
ON
vs
temperature.
Internal linear regulator output, connected to external 1µF capacitor close to the pin.
Analog ground pin.
Internal regulator supply pin; connect to external 10µF capacitor close to the pin.
HAVDD buck power input pin; connect to external 10µF capacitor close to the pin.
Not connected.
DESCRIPTION
PHASE1
HAVDD
PGND3
SS
COMP
PGND2, 1
SW2, 1
SWIN
SWO
DRVP
FBP
FBN
DRVN
PG
A0
SCL
SDA
VCORE
PGND4
PHASE2
VIO
SWB1, 2
PVIN2, 1
PAD
HAVDD buck switch node; connect an inductor to the pin for synchronous mode, or connect a inductor and a Schottky diode
to the pin for asynchronous mode.
HAVDD buck output feedback input pin.
HAVDD buck Power ground.
AVDD boost and HAVDD buck soft-start timing capacitor connection for step-up.
AVDD boost compensation pin; connect a 5.6kΩ resistor and 15nF capacitor in series to the pin.
AVDD boost power ground.
AVDD boost switch node connection.
AVDD delay FET input, connect a 10µF capacitor close to the pin.
AVDD delay FET output, connect a 22µF capacitors close to the pin.
Positive charge pump LDO transistor driver, connect the base of an external PNP bipolar to the pin.
Positive charge pump output feedback input pin.
Negative charge pump output feedback input pin.
Negative charge pump LDO transistor driver, connect the base of an external NPN bipolar to the pin.
Power-good output.
IIC slave address select pin.
IIC clock pin.
IIC data pin.
VCORE buck output feedback input pin.
VCORE buck power ground.
VCORE buck switch node, connect an inductor to the pin for synchronous mode, or connect a inductor and a Schottky diode
to the pin for asynchronous mode.
VIO buck output feedback input pin.
VIO asynchronous buck switch node connection.
VIO buck and VCORE buck power input pin; connect to external 10µF capacitor close to the pin.
Thermal Pad.
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ISL98604
Typical Application Circuit
VIN: 12V
8V~16.5V
C1
10µF
C4
10µF
VIO BUCK
PVIN1
PVIN2
BOOST
SW1
SW2
SWIN
VIO: 3.3V
3.0V~3.7V
C11
20µF
L2
6.8µH
SWB1
SWB2
D11
SS33
VIO
SWO
COMP
PGND1
PGND2
SS
R01
5.6k
C01
15nF
C63
1µF
C05
47nF
R63
700
Q1
fmmt3906
C21
10µF
L3
2.2µF
PHASE2
FBP
PGND4
ASYNC MODE
TCOMP
R62
10k
HAVDD BUCK
VIN
C2
10µF
PVIN3
HAVDD
L4
6.8µH
PHASE1
PGND3
ASYNC MODE
VIO
VIO
R44
100k
PC
R43
100k
INTERFACE/SEQUENCE
PG
SCL
SDA
A0
EN
VDC
AGND
AVIN
VIN
C3
10µF
C40
1µF
R42
10k
PGOOD
FBN
VIO
DRVN
R54
700
MMBT3904
Q2
VOFF C.P.
R53
0
C53
0.22µF
VOFF:
5V, -8.1V~1.8V
C51
4.7µF
VDC
R61
10k
TDK NTC 1068 E TYPE 10k
NTC
SWB1
C65
10µF
AVDD
BAT54S
LX
D61 0
R64
C64
0.1µF
L1
4.7µH
SS34
LX D1
C04
10µF
AVDD: 16V
12.7V~19.0V
C02
20µF
C03
20µF
VCORE BUCK
VON C.P.
VCORE: 1.8V, 0.9V~2.4V
VCORE
DRVP
VON:
HT: 26V
7V~32V
LT: 28V, 19V~34V
HAVDD: 8.0V
6.4V~9.55V
C31
4.7µF
D52
D51
C52 BAT54S
100nF
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ISL98604
Block Diagram
AGND
VIO
COMP
SWO
SW1
FOSC
750kHz
REF
FOSC
750kHz
SW2
S
R
Q
PGND1
PGND2
SWIN
DELAY
FET
PG
PGOOD
MONITORING
VON
LINEAR
REGULATOR
CONTROL
I
2
C INTERFACE
AND
SEQUENCE
CONTROL
EEPROM
TCOMP
4.5V
REGULATOR
VOFF
LINEAR
REGULATOR
CONTROL
REF
SWO
PVIN1
PVIN2
S
Q
SWB1
SWB2
R
SLOPE
COMPENSATION
DRVP
FBP
EN
SS
SCL
SCA
A0
VDC
AVIN
DRVN
FBN
VCORE
HAVDD
PVIN3
VIO
S
Q
Q R
PHASE2
AVIN
AVIN
FOSC
3MHz
FOSC
1MHz
REF
REF
S
Q
R Q
PHASE1
PGND4
PGND3
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