EL7586ILZ-T13 Intersil, EL7586ILZ-T13 Datasheet

IC POWER SUPPLY TFT-LCD 20-QFN

EL7586ILZ-T13

Manufacturer Part Number
EL7586ILZ-T13
Description
IC POWER SUPPLY TFT-LCD 20-QFN
Manufacturer
Intersil
Datasheet

Specifications of EL7586ILZ-T13

Applications
Converter, TFT, LCD
Voltage - Input
3 ~ 5 V
Number Of Outputs
4
Voltage - Output
5.5 ~ 20 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
TFT-LCD Power Supply
The EL7586 and EL7586A represent multiple output
regulators for use in all large panel, TFT-LCD applications.
Both feature a single boost converter with an integrated 2A
FET, two positive LDOs for V
and a single negative LDO for V
converter can be programmed to operate in either P-mode
or PI-mode for improved load regulation.
Both EL7586 and EL7586A also integrate fault protection for
all four channels. Once a fault is detected, the device is
latched off until the input supply or EN is cycled. EL7586
also features an integrated start-up sequence for
V
V
transistor. The timing of the start-up sequence is set using
an external capacitor.
EL7586A features an immediately-enabled V
which is independent of EN input. The V
switched off if a fault is detected and the power supply needs
to be recycled to reset this condition.
Both the EL7586 and EL7586A are pin-compatible, come in
the 20 Ld 4x4 QFN package, and are specified for operation
over the -40°C to +85°C temperature range.
Ordering Information
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.
EL7586ILZ
(Note)
EL7586ILZ-T7
(Note)
EL7586ILZ-T13
(Note)
EL7586AILZ
(Note)
EL7586AILZ-T7
(Note)
EL7586AILZ-T13
(Note)
PART NUMBER
BOOST
BOOST
, and V
/V
LOGIC,
ON
7586ILZ
7586ILZ
7586ILZ
7586AIL Z
7586AIL Z
7586AIL Z
MARKING
V
. The latter requires a single external
PART
OFF
, then V
®
TAPE &
ON
REEL
1
13”
13”
7”
7”
-
-
ON
OFF
and V
or for V
Data Sheet
20 Ld 4x4 QFN
(Pb-free)
20 Ld 4x4 QFN
(Pb-free)
20 Ld 4x4 QFN
(Pb-free)
20 Ld 4x4 QFN
(Pb-free)
20 Ld 4x4 QFN
(Pb-free)
20 Ld 4x4 QFN
(Pb-free)
generation. The boost
PACKAGE
LOGIC
LOGIC
LOGIC
LOGIC
generation,
output will be
, V
MDP0046
MDP0046
MDP0046
MDP0046
MDP0046
MDP0046
OFF
output
DWG. #
PKG.
1-888-INTERSIL or 1-888-468-3774
,
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• 2A current limit FET options
• 3V to 5V input
• Up to 20V boost out
• 1% regulation on all outputs
• V
• Programmable sequence delay
• Fully fault protected
• Thermal shutdown
• Internal soft-start
• 20 Ld 4x4 QFN packages
• Pb-free plus anneal available (RoHS compliant)
Applications
• LCD monitors (15”+)
• LCD-TV (up to 40”+)
• Notebook displays (up to 16”)
• Industrial/medical LCD displays
Pinout
V
- V
LOGIC
BOOST
January 17, 2006
LOGIC
All other trademarks mentioned are the property of their respective owners.
-V
|
/V
DRVP
DELB
CDLY
Intersil (and design) is a registered trademark of Intersil Americas Inc.
OFF
LX1
LX2
LOGIC
is on from start-up for EL7586A
Copyright Intersil Americas Inc. 2005, 2006. All Rights Reserved
-V
1
2
3
4
5
BOOST
-V
OFF
EL7586, EL7586A
(20 LD 4X4 QFN)
EL7586, EL7586A
TOP VIEW
-V
-V
THERMAL
ON
ON
PAD
or
sequence control
15
14
13
12
11 FBN
CINT
VREF
PGND
PGND
FN9210.2

Related parts for EL7586ILZ-T13

EL7586ILZ-T13 Summary of contents

Page 1

... TAPE & PART NUMBER MARKING REEL PACKAGE EL7586ILZ 7586ILZ - 20 Ld 4x4 QFN (Note) (Pb-free) EL7586ILZ-T7 7586ILZ 7” 4x4 QFN (Note) (Pb-free) EL7586ILZ-T13 7586ILZ 13” 4x4 QFN (Note) (Pb-free) EL7586AILZ 7586AIL 4x4 QFN (Note) (Pb-free) EL7586AILZ-T7 7586AIL Z 7” 4x4 QFN (Note) ...

Page 2

Absolute Maximum Ratings ( ...

Page 3

Electrical Specifications -40°C to 85°C, unless otherwise specified. (Continued) PARAMETER DESCRIPTION V LDO ON V FBP Regulation Voltage FBP V FBP Fault Trip Point F_FBP I FBP Input Bias Current FBP GMP FBP Effective Transconductance ...

Page 4

Electrical Specifications -40°C to 85°C, unless otherwise specified. (Continued) PARAMETER DESCRIPTION FAULT DETECTION t Fault Time Out FAULT OT Over-temperature Threshold I PG Pull-down Current PG LOGIC ENABLE V Logic High Threshold HI V Logic ...

Page 5

Typical Performance Curves 100 80 A =15V VDD 100 200 I (mA) OUT FIGURE 1. V EFFICIENCY AT V BOOST 100 80 A =15V VDD 100 200 300 I (mA) ...

Page 6

Typical Performance Curves 0 -0.5 -1.0 -1.5 -2.0 A -2.5 A =15V VDD -3.0 -3.5 A VDD -4.0 0 100 200 300 I (mA) OUT FIGURE 7. V LOAD REGULATION AT V BOOST 0.05 0.04 0.03 0.02 0.01 0 -0.01 ...

Page 7

Typical Performance Curves 0 -0.2 -0.4 -0.6 -0.8 -1.0 -1.2 0 100 200 300 400 I (mA) OUT FIGURE 13. V LOAD REGULATION LOGIC V CDLY V REF V BOOST V LOGIC TIME (10ms/DIV) FIGURE 15. EL7586 START-UP SEQUENCE V ...

Page 8

Typical Performance Curves V BOOST V LOGIC V OFF C =220nF V DLY ON TIME (10ms/DIV) FIGURE 19. EL7586A START-UP SEQUENCE V = =13V OUT I =30mA OUT TIME (400ns/DIV) FIGURE 21. LX WAVEFORM - DISCONTINUOUS MODE JEDEC ...

Page 9

Applications Information The EL7586 and EL7586A provide a high integrated multiple output power solution for TFT-LCD applications. The system consists of one high efficiency boost converter and three linear-regulator controllers ( OFF multiple protection functions. A block ...

Page 10

REFERENCE V REF GENERATOR SGND SLOPE COMPENSATION VOLTAGE FBB AMPLIFIER GM AMPLIFIER C INT UVLO EN COMPARATOR V DD SHUTDOWN PG & START-UP CONTROL THERMAL SHUTDOWN CDLY SS + DRVN 0.2V - BUFFER FBN 0.4V UVLO COMPARATOR FIGURE 25. BLOCK ...

Page 11

EL7586, EL7586A SLOPE COMPENSATION Ifb CURRENT AMPLIFIER Iref FBB GM AMPLIFIER REFERENCE GENERATOR CINT FIGURE 26. BLOCK DIAGRAM OF THE BOOST REGULATOR 11 SHUTDOWN & STARTUP CONTROL CLOCK PWM LOGIC BUFFER Ifb Iref VOLTAGE AMPLIFIER PGND LX FN9210.2 January 17, ...

Page 12

The following table gives typical values (margins are considered 10%, 3%, 20%, 10%, and 15 and I : OMAX TABLE (V) V (V) L (µH) (MHz 3.3 9 6.8 1 3.3 12 ...

Page 13

Operation of the DELB Output Function An open drain DELB output is provided to allow the boost output voltage, developed at C (see application diagram delayed via an external switch (Q4 time after the V ...

Page 14

For the EL7586 and EL7586A, the minimum drive current is: I_DRVL_min = 8mA The minimum base-emitter resistor, R calculated as: R _min = V _max/(I_DRVL_min - Ic/Hfe_min 1.25V/(8mA - 500mA/100) = 417Ω This is the minimum value ...

Page 15

Typical V voltage supported by EL7586 LOGIC and EL7586A ranges from +1. comparator is also included for monitoring the output voltage. The undervoltage threshold is set ...

Page 16

The following equation gives the boundary between discontinuous and continuous boost operation. For continuous operation (LX switching every clock cycle) we require that: I(A _load) > D*(1-D)*V /(2*L*F VDD IN OSC where the duty cycle ...

Page 17

EL7586, EL7586A V CDLY EN V REF V BOOST LOGIC V OFF t DEL1 DELAYED V BOOST V ON START-UP SEQUENCE TIMED BY C FIGURE 33. EL7586 START-UP SEQUENCE DEL2 DLY FN9210.2 January ...

Page 18

EL7586, EL7586A V CDLY REF V BOOST LOGIC V OFF t DEL1 DELAYED V BOOST V ON START-UP SEQUENCE TIMED BY C FIGURE 34. EL7586A START-UP SEQUENCE DEL2 t ...

Page 19

Over-Temperature Protection An internal temperature sensor continuously monitors the die temperature. In the event that the die temperature exceeds the thermal trip point of 140°C, the device will shut down. Layout Recommendation The device's performance including efficiency, output noise, transient ...

Page 20

Typical Application Diagram Q NODE 1nF 10µ 0.22µF 4.7µF R 10Ω 4.7µ 10kΩ 0.1µF REF 41 NODE ...

Page 21

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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