ISL97642IRTZ-T Intersil, ISL97642IRTZ-T Datasheet

IC REG TFT-LCD DC/DC 32-TQFN

ISL97642IRTZ-T

Manufacturer Part Number
ISL97642IRTZ-T
Description
IC REG TFT-LCD DC/DC 32-TQFN
Manufacturer
Intersil
Datasheet

Specifications of ISL97642IRTZ-T

Applications
LCD TV/Monitor
Current - Supply
5mA
Voltage - Supply
2.6 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
32-TQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL97642IRTZ-T
Manufacturer:
INTERSIL
Quantity:
20 000
TFT-LCD DC/DC with Integrated
Amplifiers
The ISL97642 integrates a high performance boost regulator
with 2 LDO controllers for V
with adjustable delay and three amplifiers for V
V
The boost converter in the ISL97642 is a current mode PWM
type integrating an 18V N-Channel MOSFET.
Using external low-cost transistors, the LDO controllers
provide tight regulation for V
start-up sequence control and fault protection.
The amplifiers are ideal for V
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 (5mmx5mm) Pb-free package,
the ISL97642 is specified for operation over the -40°C to +85°C
temperature range.
GAMMA
applications.
®
ON
ON
COM
1
and V
, V
OFF
and V
Data Sheet
OFF
, as well as providing
GAMMA
, a V
ON
COM
-slice circuit
and
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Current mode boost regulator
• 2.6V to 5.5V V
• 2 LDO controllers for V
• High speed amplifiers
• 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
ISL97642IRTZ*
*Add “-T” or “-TK” suffix for tape and reel. Please refer to TB347 for
details on reel specifications.
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.
PART NUMBER
- Fast transient response
- 1% accurate output voltage
- 18V/2.4A integrated FET
- >90% efficiency
- 2% output regulation
- V
- 150mA short-circuit output current
- 12V/μs slew rate
- 12MHz -3dB bandwidth
- Rail-to-rail inputs and outputs
(Note)
ON
All other trademarks mentioned are the property of their respective owners.
June 18, 2007
-slice circuit
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
97642 IRTZ
IN
MARKING
supply
PART
Copyright Intersil Americas Inc. 2007. All Rights Reserved
ON
and V
32 Ld 5x5x0.75 TQFN L32.5x5A
PACKAGE
OFF
(Pb-free)
ISL97642
FN6436.0
DWG. #
PKG.

Related parts for ISL97642IRTZ-T

ISL97642IRTZ-T Summary of contents

Page 1

... LCD-TVs Ordering Information PART NUMBER (Note) ISL97642IRTZ* *Add “-T” or “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications. 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 ...

Page 2

Pinouts 2 ISL97642 ISL97642 (32 LD TQFN) TOP VIEW SRC 1 REF 2 AGND 3 PGND 4 THERMAL PAD OUT1 5 NEG1 6 POS1 7 OUT2 NOT INTERNALLY CONNECTED 24 COMP ...

Page 3

... Soft-Start Period SS 3 ISL97642 Thermal Information = +25°C) Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C +0.3V Maximum Continuous Junction Temperature . . . . . . . . . . . . +125°C IN Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves Operating Ambient Temperature . . . . . . . . . . . . . . . .-40°C to +85°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp -20V to V +0. +0.3V SRC = 12V 20V, Over-temperature from -40° ...

Page 4

Electrical Specifications Unless Otherwise Specified. (Continued) PARAMETER DESCRIPTION OPERATIONAL AMPLIFIERS V Supply Operating Range SUP I Supply Current per Amplifier SUP V Offset Voltage OS I Input Bias Current B CMIR Common Mode Input Range ...

Page 5

Electrical Specifications Unless Otherwise Specified. (Continued) PARAMETER DESCRIPTION I CTL CTL Input Leakage Current LEAK t rise CTL to OUT Rising Prop Delay D t fall CTL to OUT Falling Prop Delay D V SRC ...

Page 6

Pin Descriptions PIN NAME ISL97642 SRC 1 REF 2 AGND 3 PGND 4 OUT1 5 NEG1 6 POS1 7 OUT2 8 NEG2 9 POS2 10 BGND 11 POS3 15 NEG3 16 OUT3 17 SUP 14 POS3 15 NEG3 16 OUT3 ...

Page 7

Typical Performance Curves 100 200 400 600 800 LOAD CURRENT (mA) FIGURE 1. BOOST EFFICIENCY ...

Page 8

Typical Performance Curves 0 -0.05 -0.10 -0.15 -0.20 -0. LOAD CURRENT (mA) ON FIGURE 7. V LOAD REGULATION ON 0 -0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 -0 LOAD CURRENT ...

Page 9

Typical Performance Curves JEDEC JESD51-7 HIGH EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD - QFN EXPOSED DIEPAD SOLDERED TO PCB PER JESD51-5 3.0 2.857W 2.5 QFN32 2.0 θ = 35°C/W JA 1.5 1.0 0 100 AMBIENT ...

Page 10

V REF REFERENCE GENERATOR FBB GM AMPLIFIER C INT UVLO COMPARATOR THERMAL SHUTDOWN DRVN BUFFER FBN 0.4V Boost Converter The main boost converter is a current mode PWM converter operating at a fixed frequency. The 1.2MHz switching frequency enables the ...

Page 11

The current through MOSFET is limited to 2.8A (typ) peak. This restricts the maximum output current based on Equation 3: ΔI V ⎛ ⎞ × -------- --------- – ⎝ ⎠ OMAX LMT ...

Page 12

Table 2 gives typical values (margins are considered 10%, 3%, 20%, 10% and 15 TABLE 2. V (V) V (V) L (µ 3.3 9 6.8 3.3 12 ...

Page 13

LDO_ON 0.9V PG_LDOP + 36V ESD - CLAMP R BP 700Ω DRVP FBP + - GMP 1: Np FIGURE 18. V FUNCTIONAL BLOCK DIAGRAM ON LDO_OFF PG_LDON - + R 0.4V 20kΩ FBN DRVN + GMN ...

Page 14

ISL97642 FIGURE 21. THE LINEAR REGULATOR CONTROLS ONE STAGE OF CHARGE PUMP Calculation of the Linear Regulator Base-emitter Resistors (RBP and RBN) For the pass transistor of the linear regulator, low frequency gain (Hfe) and unity gain frequency (f T ...

Page 15

V and V regulation – depending ON OFF on their exact loading conditions at the time. To optimize V /V ...

Page 16

V CDEL IN V REF V BOOST V OFF CIRCUIT ON SLICE NOTE: Not to scale Component Selection for Start-up Sequencing and Fault Protection The C capacitor is typically set at 220nF and is required REF to ...

Page 17

The user is directed to the layout guidelines and component selection sections to avoid problems during initial evaluation and prototype PCB generation. V -Slice Circuit ON The V -slice Circuit functions as a three ...

Page 18

Typical Application Circuit V IN (2.6V TO 5.5V) 10µF 10Ω C1 470nF 180Ω 2.2nF 700Ω 0.1µF Q21 V 82kΩ R22 NEG (-8V) 10kΩ 470nF R21 0.1µF CONTROL INPUT 100nF V MAIN V COM FB3 V COM3 V COM ...

Page 19

... 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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