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EL7640A, EL7641A, EL7642A
Data Sheet May 15, 2006 FN6270.0
PRELIMINARY
TFT-LCD DC/DC with Integrated Amplifiers
The EL7640A, EL7641A, and EL7642A integrate a high performance boost regulator with 2 LDO controllers for VON and VOFF, a VON-slice circuit with adjustable delay and either one (EL7640A), three (EL7641A), or five amplifiers (EL7642A) for VCOM and VGAMMA applications. The boost converter in the EL7640A, EL7641A, and EL7642A is a current mode PWM type integrating an 18V NHchannel 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 VON, VOFF, as well as providing start-up sequence control and fault protection. The amplifiers are ideal for VCOM and VGAMMA applications, with 150mA peak output current drive, 12MHz bandwidth, and 12V/µs slew rate. All inputs and outputs are rail-to-rail. Available in the 32 Ld thin QFN (5mm x 5mm) Pb-free packages, the EL7640A, EL7641A, and EL7642A are specified www.DataSheet4U.com 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 VIN supply • 2 LDO controllers for VON and VOFF - 2% output regulation - VON-slice circuit • High speed amplifiers - 150mA short-circuit output current - 12V/µs 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)
PKG. DWG. # MDP0051 MDP0051 MDP0051 MDP0051 MDP0051 MDP0051 MDP0051 MDP0051 MDP0051
Ordering Information
PART NUMBER (Note) EL7640AILTZ EL7640AILTZ-T7 PART TAPE & PACKAGE MARKING REEL (Pb-Free) 7640AILTZ 7640AILTZ 7” 13” 7” 13” 7” 13” 32 Ld 5x5 Thin QFN 32 Ld 5x5 Thin QFN 32 Ld 5x5 Thin QFN 32 Ld 5x5 Thin QFN 32 Ld 5x5 Thin QFN 32 Ld 5x5 Thin QFN 32 Ld 5x5 Thin QFN 32 Ld 5x5 Thin QFN 32 Ld 5x5 Thin QFN
Applications
• TFT-LCD panels • LCD monitors • Notebooks • LCD-TVs
EL7640AILTZ-T13 7640AILTZ EL7641AILTZ EL7641AILTZ-T7 7641AILTZ 7641AILTZ
EL7641AILTZ-T13 7641AILTZ EL7642AILTZ EL7642AILTZ-T7 7642AILTZ 7642AILTZ
EL7642AILTZ-T13 7642AILTZ
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.
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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.
EL7640A, EL7641A, EL7642A Pinouts
EL7640A (32 LD QFN) TOP VIEW
28 DRVN 26 DRVP 32 COM 32 COM 31 DRN 31 DRN
EL7641A (32 LD QFN) TOP VIEW
28 DRVN 26 DRVP
27 FBN
27 FBN
25 FBP
SRC 1 REF 2 AGND 3 PGND 4 OUT1 5 NEG1 6 POS1 7 NC 8 IC 10 BGND 11 NC 12 NC 13 SUP 14 NC 15 NC 16 NC 9 THERMAL PAD
24 COMP 23 FB 22 IN 21 LX 20 NC 19 NC 18 IC 17 NC
SRC 1 REF 2 AGND 3 PGND 4 OUT1 5 NEG1 6 POS1 7 OUT2 8 POS2 10 BGND 11 NC 12 NC 13 SUP 14 POS3 15 NEG3 16 NEG2 9 THERMAL PAD
25 FBP 24 COMP 23 FB 22 IN 21 LX 20 NC 19 NC 18 IC 17 OUT3
FN6270.0 May 15, 2006
29 DEL
NC = NOT INTERNALLY CONNECTED IC = INTERNALLY CONNECTED
NC = NOT INTERNALLY CONNECTED IC = INTERNALLY CONNECTED
EL7642A (32 LD QFN) TOP VIEW
28 DRVN 26 DRVP 32 COM 31 DRN
27 FBN
SRC 1 REF 2 AGND 3 PGND 4 OUT1 5 NEG1 6 POS1 7 OUT2 8 POS2 10 BGND 11 POS3 12 OUT3 13 SUP 14 POS4 15 NEG4 16 NEG2 9 THERMAL PAD
25 FBP
29 DEL
30 CTL
24 COMP 23 FB 22 IN 21 LX 20 OUT5 19 NEG5 18 POS5 17 OUT4
2
29 DEL
30 CTL
30 CTL
EL7640A, EL7641A, EL7642A
Absolute Maximum Ratings (TA = 25°C)
IN, CTL to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.5V COMP, FB, FBP, FBN, DEL, REF to AGND. . . . . -0.3V to VIN+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 VSUP+0.3V DRVN to AGND . . . . . . . . . . . . . . . . . . . . . . . VIN -20V to VIN +0.3V COM, DRN to AGND . . . . . . . . . . . . . . . . . . . . -0.3V to VSRC +0.3V LX Maximum Continuous RMS Output Current. . . . . . ..