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ISL97651ARTZ-T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19
1
FN7493.3
ISL97651
4-Channel Integrated LCD Supply
The ISL97651 represents a high power, integrated LCD
supply IC targeted at large panel LCD displays. The
ISL97651 integrates a high power, 4.4A boost converter for
A
VDD
generation, an integrated V
ON
charge pump, a V
OFF
charge pump driver, V
ON
slicing circuitry and a buck
regulator with 2A switch for logic generation.
The ISL97651 have been designed for ease of layout and
low BOM cost. Supply sequencing is integrated for both
A
VDD
-> V
OFF
-> V
ON
and A
VDD
/V
OFF
-> V
ON
sequences.
The TFT power sequence uses a separate enable to the
logic buck regulator for maximum flexibility.
Peak efficiencies are 90% for boost and 92% for buck while
operating from a 4V to 5.5V input supply. The current mode
buck offers superior line and load regulation. Available in the
36 Ld QFN package, the ISL97651 is specified for ambient
operation over the -40°C to +105°C temperature range.
Pinout
ISL97651
(36 LD TQFN)
TOP VIEW
Features
• 4V to 5.5V input supply
•A
VDD
boost up to 20V, with integrated 4.4A FET
• Integrated V
ON
charge pump, up to 34V
OUT
•V
OFF
charge pump driver, down to -18V
•V
LOGIC
buck down to 1.2V, with integrated 2A FET
• Automatic start-up sequencing
-A
VDD
-> V
OFF
-> V
ON
or A
VDD
/V
OFF
-> V
ON
- Independent logic enable
•V
ON
slicing
• Thermally enhanced thin QFN package (6mmx6mm)
• Pb-free (RoHS compliant)
Applications
• LCD monitors (15”+)
•LCD-TVs (40”+)
• Notebook displays (up to 16”)
• Industrial/medical LCD displays
THERMAL
PAD
27
26
25
24
23
22
21
36
35
34
33
32
10
11
12
13
14
1
2
3
4
5
6
7
VIN1
LX1
LX2
CB
LXL
VSUP
FBL
AGND
PGND1
PGND2
VINL
NOUT
PGND3
FBN
NC
EN
FBB
VIN2
CM1
NC
DRN
COM
POUT
C1-
8
9
20
19
15 31
16 30
VREF
FBP
C1+
C2-
CM2
CTL
DELB
ENL
17
18
C2+
NC
29
28
CDEL
NC
Ordering Information
PART NUMBER
(Notes 1, 2)
PART
MARKING
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL97651ARTZ-T ISL976 51ARTZ 36 Ld 6x6 TQFN L36.6x6
ISL97651ARTZ-TK ISL976 51ARTZ 36 Ld 6x6 TQFN L36.6x6
NOTES:
1. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special
Pb-free material sets, molding compounds/die attach materials,
and 100% matte tin plate plus anneal (e3 termination finish,
which is RoHS compliant and compatible with both SnPb and
Pb-free soldering operations). Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or
exceed the Pb-free requirements of IPC/JEDEC J STD-020.
Data Sheet April 24, 2009
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006-2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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9
8
6
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3
2
FN7493.3
April 24, 2009
Absolute Maximum Ratings (T
A
= +25°C) Thermal Information
Maximum Pin Voltages, All Pins Except Below . . . . . . . . . . . . . 6.5V
LX1, LX2, V
SUP
, NOUT, DELB, C1-, C2- . . . . . . . . . . . . . . . . .24V
C1- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14V
CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13V
DRN, COM, POUT, C1+, C2+ . . . . . . . . . . . . . . . . . . . . . . . . .36V
CB-V
INL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5V
Recommended Operating Conditions
Input Voltage Range, V
IN
. . . . . . . . . . . . . . . . . . . . . . . . . 4V to 5.5V
Boost Output Voltage Range, A
VDD
. . . . . . . . . . . . . . . . . . . . +20V
V
ON
Output Range, V
ON
. . . . . . . . . . . . . . . . . . . . . . +15V to +32V
V
OFF
Output Range, V
OFF
. . . . . . . . . . . . . . . . . . . . . . -15V to -5V
Logic Output Voltage Range, V
LOGIC
. . . . . . . . . . . +1.5V to +3.3V
Input Capacitance, C
IN
. . . . . . . . . . . . . . . . . . . . . . . . . . . 2 x 10µF
Boost Inductor, L1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3µH to 10µH
Output Capacitance, C
OUT
. . . . . . . . . . . . . . . . . . . . . . . . 2 x 22µF
Buck Inductor, L2. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3µH to 10µH
Operating Ambient Temperature Range . . . . . . . . -40°C to +105°C
Operating Junction Temperature . . . . . . . . . . . . . . -40°C to +125°C
Thermal Resistance
JA
(°C/W)
JC
(°C/W)
6x6 QFN Package (Notes 3, 4) . . . . . . 30 2.5
Maximum Junction Temperature (Plastic Package) . . . . . . . +150°C
Maximum Storage Temperature Range. . . . . . . . . .-65°C to +150°C
Power Dissipation
T
A
25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.3W
T
A
= +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.8W
T
A
= +85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.3W
T
A
= +100°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.8W
Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTES:
3.
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
4. For
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications V
IN
= 5V, V
BOOST
= V
SUP
= 15V, V
ON
= 25V, V
OFF
= -8V, over-temperature from -40°C to +105°C; Parameters
with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits
established by characterization and are not production tested.
PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT
SUPPLY PINS
V
IN
Supply Voltage (VIN1 and VIN2) 4 5 5.5 V
V
INL
Logic Supply Voltage 4 5 5.5 V
V
SUP
Charge Pumps and V
ON
Slice
Positive Supply
420V
I
VIN
Quiescent Current into V
IN
Enabled, No switching 3 mA
Disabled 10 µA
I
INL
Logic Supply Current Enabled, No switching 0.4 1.0 mA
Disabled 10 µA
I
SUP
V
SUP
Supply Current Enabled, No switching and VP
OUT
= V
SUP
0.5 mA
Disabled 10 µA
V
LOR
Undervoltage Lockout Threshold V
IN
rising 2.0 2.75 2.9 V
V
LOF
Undervoltage Lockout Threshold V
IN
falling 1.9 2.2 2.5 V
V
REF
Reference Voltage T
A
= +25°C 1.19 1.205 1.235 V
1.187 1.205 1.238 V
f
OSC
Oscillator Frequency 1010 1200 1400 kHz
A
VDD
BOOST D
Max
, Maximum Duty Cycle: Minimum 84%
V
BOOST
Boost Output Range 1.25*V
IN
20 V
I
LX
LX Leakage Current LX = 0V and 24V -10 .01 10 µA
I
BOOST
Boost Switch Current Current limit 4.4 4.8 6.3 A
ISL97651
3
FN7493.3
April 24, 2009
EFF
BOOST
Peak Efficiency See graphs and component
recommendations
90 %
r
DS(ON)
Switch ON-Resistance 70 100 m
V
BOOST
/V
IN
Line Regulation PI mode, R1 = 10k and C3 = 4.7nF over a
load range of 0mA to 300mA (tested),
0-I
LIMIT_ONSET
(by design)
0.4 1.5 %/V
V
BOOST
/I
OUT
Load Regulation 0.1 0.5 %
V
FBB
Boost Feedback Voltage T
A
= +25°C 1.192 1.205 1.218 V
1.188 1.205 1.222 V
ACC
BOOST
A
VDD
Output Accuracy T
A
= +25°C -1.5 +1.5 %
t
SS
Soft-start Period for A
VDD
C
DEL
= 220nF 9.6 ms
V
LOGIC
BUCK
D
MAX
_buck typical maximum duty cycle = 0.85*(V
INL
-I
LOAD
*0.3) I
LOAD
_min, Minimum 1mA for V
INL
-V
BUCK
>1.5V, 5mA otherwise
V
BUCK
Buck Output Voltage Output current = 0.5A V
REF
4V
I
LXL
LX Leakage Current LX = 0V and 18V -10 .01 10 µA
I
BUCK
Buck Switch Current Current limit 2.0 2.7 A
EFF
BUCK
Peak Efficiency See graphs and component
recommendations
92 %
R
DS-ONBK
Switch ON-Resistance 200 455 m
V
BUCK
/V
IN
Line Regulation PI mode, R1 = 2k and C3 = 4.7nF over a
load range of 0mA to 300mA (tested),
0-I
LIMIT_ONSET
(by design)
0.1 1 %/V
V
BUCK
/I
OUT
Load Regulation 0.04 0.5 %
V
FBL
FBL Regulation Voltage I
DRVL
= 1mA, T
A
= +25°C 1.176 1.2 1.224 V
I
DRVL
= 1mA 1.174 1.2 1.226 V
ACC
LOGIC
V
LOGIC
Output Accuracy T
A
= +25°C -2 +2 %
t
SS(L)
Soft-Start Period for V(Logic) C(VREF) = 220nF (Note - no soft-start if EN
asserted HIGH before ENB)
0.5 ms
NEGATIVE (V
OFF
) CHARGE PUMP
V
OFF
V
OFF
Output Voltage Range 2X Charge Pump -V
SUP
+1.4V 0 V
I
LOAD_NCP_MIN
External Load Driving Capability V
SUP
> 5V 30 mA
r
ON(NOUT)H
High-Side Driver ON-Resistance at
N
OUT
I
(NOUT)
= +60mA 10
r
ON(NOUT)L
Low-Side Driver ON-Resistance at
N
OUT
I
(NOUT)
= -60mA 5
I
PU(NOUT)LIM
Pull-up Current Limit in N
OUT
V
(NOUT)
= 0V to V(SUP) - 0.5V 60 270 mA
I
PD(NOUT)LIM
Pull-down Current Limit in N
OUT
V
(NOUT)
= 0.36V to V(VSUP) -200 -60 mA
I
(NOUT)LEAK
Leakage Current in N
OUT
V
(FBN)
< 0 or EN = LOW -2 2 µA
V
FBN
FBN Regulation Voltage I
DRVN
= 0.2mA, T
A
= +25°C 0.173 0.203 0.233 V
I
DRVN
= 0.2mA 0.171 0.203 0.235 V
ACCN V
OFF
Output Accuracy I
OFF
= 1mA, T
A
= +25°C -3 +3 %
D_NCP_max Max Duty Cycle of the Negative
Charge Pump
50 %
r
PD(FBN)OFF
Pull-Down Resistance, Not Active I
(FBN)
= 500µA 2 3 4 k
Electrical Specifications V
IN
= 5V, V
BOOST
= V
SUP
= 15V, V
ON
= 25V, V
OFF
= -8V, over-temperature from -40°C to +105°C; Parameters
with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits
established by characterization and are not production tested. (Continued)
PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT
ISL97651
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19

ISL97651ARTZ-T

Mfr. #:
Buy ISL97651ARTZ-T
Manufacturer:
Renesas / Intersil
Description:
Display Drivers & Controllers ISL97651ARTZ 4-CH IN TEGRTD LCD SUPY
Lifecycle:
New from this manufacturer.
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