ISL97651ARTZ-TK Intersil, ISL97651ARTZ-TK Datasheet

IC LCD SUPPLY HP 4CHN 36-TQFN

ISL97651ARTZ-TK

Manufacturer Part Number
ISL97651ARTZ-TK
Description
IC LCD SUPPLY HP 4CHN 36-TQFN
Manufacturer
Intersil
Datasheet

Specifications of ISL97651ARTZ-TK

Applications
LCD TV/Monitor
Current - Supply
400µA
Voltage - Supply
4 V ~ 5.5 V
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
36-TQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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
charge pump driver, V
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
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
VDD
VDD
VSUP
VIN1
CM2
FBL
CTL
LX1
LX2
LXL
CB
generation, an integrated V
-> V
1
2
3
4
5
6
7
8
9
OFF
-> V
ON
ON
and A
(36 LD TQFN)
TOP VIEW
slicing circuitry and a buck
ISL97651
THERMAL
®
PAD
VDD
1
/V
ON
OFF
Data Sheet
charge pump, a V
-> V
ON
sequences.
27
26
25
24
23
22
21
20
19
AGND
PGND1
PGND2
VINL
NOUT
PGND3
FBN
VREF
FBP
1-888-INTERSIL or 1-888-468-3774
OFF
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• 4V to 5.5V input supply
• A
• Integrated V
• V
• V
• Automatic start-up sequencing
• V
• 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
Ordering Information
NOTES:
ISL97651ARTZ-T
ISL97651ARTZ-TK ISL976 51ARTZ 36 Ld 6x6 TQFN L36.6x6
1. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special
PART NUMBER
- A
- Independent logic enable
VDD
(Notes 1, 2)
OFF
LOGIC
ON
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.
VDD
slicing
All other trademarks mentioned are the property of their respective owners.
boost up to 20V, with integrated 4.4A FET
charge pump driver, down to -18V
April 24, 2009
buck down to 1.2V, with integrated 2A FET
|
-> V
Intersil (and design) is a registered trademark of Intersil Americas Inc.
ON
OFF
Copyright Intersil Americas Inc. 2006-2008. All Rights Reserved
charge pump, up to 34V
ISL976 51ARTZ 36 Ld 6x6 TQFN L36.6x6
-> V
MARKING
PART
ON
or A
VDD
/V
PACKAGE
(Pb-Free)
OFF
ISL97651
OUT
-> V
FN7493.3
ON
DWG. #
PKG.

Related parts for ISL97651ARTZ-TK

ISL97651ARTZ-TK Summary of contents

Page 1

... Ordering Information PART NUMBER 27 AGND (Notes PGND1 ISL97651ARTZ-T 25 PGND2 ISL97651ARTZ-TK ISL976 51ARTZ 36 Ld 6x6 TQFN L36.6x6 24 VINL NOTES: 1. Please refer to TB347 for details on reel specifications. 23 NOUT 2. These Intersil Pb-free plastic packaged products employ special 22 PGND3 Pb-free material sets, molding compounds/die attach materials, ...

Page 2

... Maximum Junction Temperature (Plastic Package +150°C Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C Power Dissipation ≤ +25° .3. +70° .1. +85° .1. +100° .0.8W A Pb-Free Reflow Profile .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp = V = 15V 25V, V BOOST SUP ON OFF CONDITIONS Slice ON Enabled, No switching IN Disabled Enabled, No switching Disabled ...

Page 3

Electrical Specifications 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 EFF Peak Efficiency BOOST r Switch ON-Resistance ...

Page 4

Electrical Specifications 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 POSITIVE (V ) CHARGE PUMP ON V ...

Page 5

Electrical Specifications 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 FAULT DETECTION THRESHOLDS T_off Thermal Shut-Down (latched ...

Page 6

Typical Performance Curves L1 = 10µ 40µF, CM1 = 4.7nF, RM1 OUT CH1 = A (200mV/DIV), CH2 = I VDD AVDD 1ms/DIV FIGURE 3. A TRANSIENT RESPONSE VDD 0 5V -0.1 -0.2 -0.3 ...

Page 7

Typical Performance Curves CH1 = COM(10V/DIV), CH2 = CTL(2V/DIV) 4ms/DIV FIGURE 9. V -SLICE CIRCUIT OPERATION ON 7 ISL97651 (Continued) CH1 = CH2 = V , CH3 = V CH4 = V DLY REF LOGIC, ...

Page 8

Pin Descriptions PIN NUMBER PIN NAME 1 VIN1 2 LX1 3 LX2 LXL 6 VSUP 7 FBL 8 CM2 9 CTL 10, 18, 28 DRN 12 COM 13 POUT 14 C1- 15 C1+ 16 ...

Page 9

Block Diagram CM1 VOLTAGE FEEDBACK - FBB + V REF UVLO COMPARATOR - + 0.75V REF 1.2MHz OSCILLATOR IN1 IN2 EN C DEL ENL V INL NOUT V CONTROL SUP N OUT - FBN + 0.2V UVLO ...

Page 10

Typical Application Diagram V IN R18 4.7Ω VIN1 C1 VIN2 2.2µ CM1 10k 4.7nF PGND1 PGND2 EN BIAS AND C SEQUENCE DEL CONTROL C6 0.22µF PGND3 C1+ C7 C1- 220nF C2+ C8 C2- 220nF CTL VINL C9 C10 ...

Page 11

Applications Information The ISL97651 provides a complete power solution for TFT LCD applications. The system consists of one boost converter to generate the A voltage for column drivers, VDD one buck converter to provide voltage to logic circuit in the ...

Page 12

Some inductors are recommended in Table 3. TABLE 3. BOOST INDUCTOR RECOMMENDATION DIMENSIONS INDUCTOR (mm) VENDOR 6.8µH/ 12.95x9.4x5.21 Coilcraft DO3316P-682ML 4.6A PEAK 10µH/ 10x10x5 Sumida CDR10D48MNNP-100NC 5.5A PEAK 5.2µH/ 10x10.1x3.8 Cooper CD1-5R2 4.55A Bussmann PEAK Rectifier Diode (Boost Converter) A ...

Page 13

... V IN LX1, LX2 FBB INTERSIL ISL97651 FIGURE 12. CASCADED MOSFET TOPOLOGY FOR HIGH OUTPUT VOLTAGE APPLICATIONS Buck Converter The buck converter is the step down converter, which supplies the current to the logic circuit of the LCD system. The ISL97651 integrates an 20V N-Channel MOSFET to save cost and reduce external component count. In the ...

Page 14

Output Capacitor (Buck Converter) Four 10µF or two 22µF ceramic capacitors are recommended for this part. The overshoot and undershoot will be reduced with more capacitance, but the recovery time will be longer. TABLE 9. BUCK OUTPUT CAPACITOR RECOMMENDATION CAPACITOR ...

Page 15

Control 1.2MHz 0.9V Error VREF FB Negative Charge Pump Design Consideration The negative charge pump consists of an internal switcher M1, M2 which drives external steering diodes D2 and D3 via a pump capacitor (C12) to generate the negative V ...

Page 16

A2 FAULT 0.4V A1 1.2MHz STOP CLK PWM EN CONTROL FIGURE 14. NEGATIVE CHARGE PUMP BLOCK DIAGRAM V Slice Circuit ON The V Slice Circuit functions as a three way multiplexer, ON switching the voltage on COM between ground, DRN ...

Page 17

A Generation Using DELB VDD_delay DELB pin is an open drain internal N-FET output used to drive an external optional P-FET to provide a delayed A supply which also has no initial pedistal voltage (see Figure 15 and compare the ...

Page 18

... 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 ...

Page 19

Package Outline Drawing L36.6x6 36 LEAD THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 5, 08/08 6.00 6 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( 5. 4.15) Exp. Dap 4.15) Exp. Dap. ( ...

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