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EL7642ILTZ

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19
1
FN7415.2
EL7640, EL7641, EL7642
TFT-LCD DC/DC with Integrated
Amplifiers
The EL7640, EL7641, and EL7642 integrate a high
performance boost regulator with 2 LDO controllers for V
ON
and V
OFF
, a V
ON
-slice circuit with adjustable delay and
either one (EL7640), three (EL7641), or five amplifiers
(EL7642) for V
COM
and V
GAMMA
applications.
The boost converter in the EL7640, EL7641, and EL7642 is
a current mode PWM type integrating an 18V N-channel
MOSFET. Operating at 1.2MHz, this boost can operate in
either P-mode for superior transient response, or in PI-mode
for tighter output regulation.
Using external low-cost transistors, the LDO controllers
provide tight regulation for V
ON
, V
OFF
, as well as providing
start-up sequence control and fault protection.
The amplifiers are ideal for V
COM
and V
GAMMA
applications, with 150mA peak output current drive, 12MHz
bandwidth, and 12V/s slew rate. All inputs and outputs are
rail-to-rail.
Available in the 32 Ld thin QFN (5mm x 5mm) Pb-free
packages, the EL7640, EL7641, and EL7642 are specified
for operation over the -40°C to +85°C temperature range.
Features
• Current mode boost regulator
- Fast transient response
- 1% accurate output voltage
- 18V/3A integrated FET
- >90% efficiency
• 2.6V to 5.5V V
IN
supply
• 2 LDO controllers for V
ON
and V
OFF
- 2% output regulation
-V
ON
-slice circuit
• High speed amplifiers
- 150mA short-circuit output current
-12V/s slew rate
- 12MHz -3dB bandwidth
- Rail-to-rail inputs and outputs
• Built-in power sequencing
• Internal soft-start
• Multiple overload protection
• Thermal shutdown
• 32 Ld 5x5 thin QFN package
• Pb-Free plus anneal available (RoHS compliant)
Applications
• TFT-LCD panels
• LCD monitors
• Notebooks
•LCD-TVs
Ordering Information
PART NUMBER
(Note)
PART
MARKING
TAPE &
REEL
PACKAGE
(Pb-Free)
PKG.
DWG. #
EL7640ILTZ 7640ILTZ - 32 Ld 5x5
Thin QFN
MDP0051
EL7640ILTZ-T7 7640ILTZ 7” 32 Ld 5x5
Thin QFN
MDP0051
EL7640ILTZ-T13 7640ILTZ 13” 32 Ld 5x5
Thin QFN
MDP0051
EL7641ILTZ 7641ILTZ - 32 Ld 5x5
Thin QFN
MDP0051
EL7641ILTZ-T7 7641ILTZ 7” 32 Ld 5x5
Thin QFN
MDP0051
EL7641ILTZ-T13 7641ILTZ 13” 32 Ld 5x5
Thin QFN
MDP0051
EL7642ILTZ 7642ILTZ - 32 Ld 5x5
Thin QFN
MDP0051
EL7642ILTZ-T7 7642ILTZ 7” 32 Ld 5x5
Thin QFN
MDP0051
EL7642ILTZ-T13 7642ILTZ 13” 32 Ld 5x5
Thin QFN
MDP0051
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin plate
termination finish, which are 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 February 22, 2006
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. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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A
2
FN7415.2
February 22, 2006
Pinouts
EL7640
(32 LD QFN)
TOP VIEW
EL7641
(32 LD QFN)
TOP VIEW
EL7642
(32 LD QFN)
TOP VIEW
NC = NOT INTERNALLY CONNECTED
IC = INTERNALLY CONNECTED
THERMAL
PAD
24
23
22
21
20
19
18
32
31
30
29
28
10
11
12
13
14
1
2
3
4
5
6
7
8 17
15
27
16
26
9
25
SRC
REF
AGND
PGND
OUT1
NEG1
POS1
NC
NC
IC
BGND
NC
NC
SUP
NC
NC
COMP
FB
IN
LX
NC
NC
IC
NC
FBP
COM
DRN
CTL
DEL
DRVN
FBN
DRVP
NC = NOT INTERNALLY CONNECTED
IC = INTERNALLY CONNECTED
THERMAL
PAD
24
23
22
21
20
19
18
32
31
30
29
28
10
11
12
13
14
1
2
3
4
5
6
7
8 17
15
27
16
26
9
25
SRC
REF
AGND
PGND
OUT1
NEG1
POS1
OUT2
NEG2
POS2
BGND
NC
NC
SUP
POS3
NEG3
COMP
FB
IN
LX
NC
NC
IC
OUT3
FBP
COM
DRN
CTL
DEL
DRVN
FBN
DRVP
THERMAL
PAD
24
23
22
21
20
19
18
32
31
30
29
28
10
11
12
13
14
1
2
3
4
5
6
7
8 17
15
27
16
26
9
25
SRC
REF
AGND
PGND
OUT1
NEG1
POS1
OUT2
NEG2
POS2
BGND
POS3
OUT3
SUP
POS4
NEG4
COMP
FB
IN
LX
OUT5
NEG5
POS5
OUT4
FBP
COM
DRN
CTL
DEL
DRVN
FBN
DRVP
EL7640, EL7641, EL7642
3
FN7415.2
February 22, 2006
Absolute Maximum Ratings (T
A
= 25°C)
IN, CTL to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.5V
COMP, FB, FBP, FBN, DEL, REF to AGND. . . . . -0.3V to V
IN
+0.3V
PGND, BGND to AGND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3V
LX to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +24V
SUP to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +18V
DRVP, SRC to AGND . . . . . . . . . . . . . . . . . . . . . . . . .-0.3V to +36V
POS1, NEG1, OUT1, POS2, NEG2, OUT2, POS3, OUT3,
POS4, NEG4, OUT4, POS5, OUT5 to AGND . .-0.3V to V
SUP
+0.3V
DRVN to AGND . . . . . . . . . . . . . . . . . . . . . . . V
IN
-20V to V
IN
+0.3V
COM, DRN to AGND . . . . . . . . . . . . . . . . . . . . -0.3V to V
SRC
+0.3V
LX Maximum Continuous RMS Output Current. . . . . . . . . . . . . 1.6A
OUT1, OUT2, OUT3, OUT4, OUT5
Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . ±75mA
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Maximum Continuous Junction Temperature . . . . . . . . . . . . +125°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Operating Ambient Temperature . . . . . . . . . . . . . . . .-40°C to +85°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: T
J
= T
C
= T
A
Electrical Specifications V
IN
= 3V, V
BOOST
= V
SUP
= 12V, V
SRC
= 20V, Over temperature from -40°C to 85°C.
Unless Otherwise Specified.
PARAMETER DESCRIPTION CONDITIONS MIN TYP MAX UNIT
SUPPLY
V
IN
Input Supply Range 2.6 5.5 V
V
LOR
Undervoltage Lockout Threshold V
IN
rising 2.4 2.5 2.6 V
V
LOF
Undervoltage Lockout Threshold V
IN
falling 2.2 2.3 2.4 V
I
S
Quiescent Current LX not switching 2.5 mA
I
SS
Quiescent Current - Switching LX switching 5 10 mA
T
FD
Fault Delay Time C
DEL
= 220nF 52 ms
V
REF
Reference Voltage T
A
= 25°C 1.19 1.215 1.235 V
1.187 1.215 1.238 V
SHUTDN Thermal Shutdown Temperature 140 °C
MAIN BOOST REGULATOR
V
BOOST
Output Voltage Range (Note 1) V
IN
+
15%
18 V
F
OSC
Oscillator Frequency 1050 1200 1350 kHz
D
CM
Maximum Duty Cycle 82 85 %
V
FBB
Boost Feedback Voltage T
A
= 25°C 1.192 1.205 1.218 V
1.188 1.205 1.222 V
V
FTB
FB Fault Trip Level Falling edge 0.85 0.925 1.020 V
V
BOOST
/
I
BOOST
Load Regulation 50mA < I
LOAD
< 250mA 0.1 %
V
BOOST
/
V
IN
Line Regulation V
IN
= 2.6V to 5.5V 0.08 %/V
I
FB
Input Bias Current V
FB
= 1.35V 500 nA
gmV FB Transconductance dI = ±2.5µA at COMP, FB = COMP 160 µA/V
R
ON
LX LX On Resistance 160 m
I
LEAK
LX LX Leakage Current V
FB
= 1.35V, V
LX
= 13V 0.02 40 µA
I
LIM
LX LX Current Limit Duty cycle = 65% (Note 1) 3.0 A
t
SS
B Soft-Start Period C
DEL
= 220nF 2 ms
EL7640, EL7641, EL7642
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19

EL7642ILTZ

Mfr. #:
Buy EL7642ILTZ
Manufacturer:
Renesas / Intersil
Description:
Switching Voltage Regulators EL7642ILZ TFT-LCD DC -DC W/INTEGRTD AMP
Lifecycle:
New from this manufacturer.
Delivery:
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