ISL78020ANZ-T Intersil, ISL78020ANZ-T Datasheet

IC BOOST REG HI-PWR 32-TQFP

ISL78020ANZ-T

Manufacturer Part Number
ISL78020ANZ-T
Description
IC BOOST REG HI-PWR 32-TQFP
Manufacturer
Intersil
Datasheet

Specifications of ISL78020ANZ-T

Applications
LCD Display, Automotive
Current - Supply
2.5mA
Voltage - Supply
2.6 V ~ 5.5 V
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
32-TQFP, 32-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Automotive Grade TFT-LCD DC/DC with
Integrated Amplifiers
The ISL78020 and ISL78022 integrate a high performance
boost regulator with 2 LDO controllers for V
V
(ISL78020) or five (ISL78022) amplifiers for V
V
The boost converter in the ISL78020 and ISL78022 is a
current mode PWM type integrating an 18V N-Channel
MOSFET. Operating at 1.2MHz, this boost converter 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
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 a 32 Ld TQFP (7mmx7mm) Pb-free package, the
ISL78020, ISL78022 are specified for operation over a -40°C to
+105°C temperature range.
Ordering Information
ISL78020ANZ*
ISL78022ANZ*
*Add “-T” suffix for tape and reel. Please refer to TB347 for details
on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ
special 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.
ON
GAMMA
PART NUMBER
-slice circuit with adjustable delay and either one
(Note)
applications.
ISL78020 ANZ 32 Ld 7x7 TQFP Q32.7x7
ISL78022 ANZ 32 Ld 7x7 TQFP Q32.7x7
MARKING
PART
®
ON
COM
1
, V
OFF
and V
PACKAGE
(Pb-Free)
Data Sheet
, as well as providing
GAMMA
ON
COM
and V
and
DWG. #
PKG.
OFF
1-888-INTERSIL or 1-888-468-3774
, a
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 7x7 TQFP package
• Pb-free (RoHS compliant)
Applications
• All automotive TFT-LCD panels
- Fast transient response
- 1% accurate output voltage
- 18V/3A 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
December 6, 2007
ON
All other trademarks mentioned are the property of their respective owners.
-slice circuit
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
IN
supply
Copyright Intersil Americas Inc. 2007. All Rights Reserved
ISL78020, ISL78022
ON
and V
OFF
FN6386.2

Related parts for ISL78020ANZ-T

ISL78020ANZ-T Summary of contents

Page 1

... PART NUMBER PART PACKAGE (Note) MARKING (Pb-Free) ISL78020ANZ* ISL78020 ANZ 32 Ld 7x7 TQFP Q32.7x7 ISL78022ANZ* ISL78022 ANZ 32 Ld 7x7 TQFP Q32.7x7 *Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets ...

Page 2

Pinouts ISL78020 (32 LD TQFP) TOP VIEW SRC 1 REF 2 AGND 3 PGND 4 OUT1 5 NEG1 6 POS1 NOT INTERNALLY CONNECTED IC = INTERNALLY CONNECTED 2 ISL78020, ISL78022 SRC 1 24 COMP REF ...

Page 3

... Maximum Continuous Junction Temperature . . . . . . . . . . . . +125°C Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curve + 0.3V Operating Ambient Temperature . . . . . . . . . . . . . . .-40°C to +105°C SUP -20V 0.3V Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below IN IN http://www.intersil.com/pbfree/Pb-FreeReflow.asp = 12V 20V, limits over -40°C to +105°C temperature range, unless BOOST SUP ...

Page 4

Electrical Specifications 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 CMRR ...

Page 5

Electrical Specifications 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 Input ...

Page 6

Pin Descriptions PIN NAME ISL78022 SRC 1 REF 2 AGND 3 PGND 4 OUT1 5 NEG1 6 POS1 7 OUT2 8 NEG2 9 POS2 10 BGND 11 POS3 12 NEG3 - OUT3 13 SUP 14 POS4 15 NEG4 16 OUT4 ...

Page 7

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

Page 8

Typical Performance Curves BOOST OUTPUT VOLTAGE (AC COUPLING) BOOST OUTPUT CURRENT FIGURE 7. BOOST PULSE LOAD TRANSIENT RESPONSE 0 -0.02 -0.04 -0.06 -0.08 -0.10 -0. INPUT VOLTAGE (V) FIGURE 9. V LINE REGULATION ON 0 -0.1 ...

Page 9

Typical Performance Curves INPUT VOLTAGE TIME (20ms/DIV) FIGURE 13. START-UP SEQUENCE FIGURE 15. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE Applications Information The ISL78020 and ISL78022 provide a highly integrated multiple output power solution for TFT-LCD applications. The system consists of ...

Page 10

V REF REFERENCE GENERATOR FBB GM AMPLIFIER CINT 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 use ...

Page 11

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

Page 12

Table 2 gives typical values (margins are considered 10%, 3%, 20%, 10% and 15 TABLE 2. TYPICAL AND ...

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

ISL78022 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

LDO regulators generate the can be appreciated that should a regular supply of LX switching edges be interrupted, (for example during discontinuous operation at light boost load currents), then this may affect the performance of V ...

Page 16

TFT-LCD backplane ( the gamma-correction COM divider string. They feature rail-to-rail input and output capability, they are unity gain stable, and have low power consumption (typical 600µA per amplifier). The ISL78020 and ISL78022 have a -3dB bandwidth of ...

Page 17

Driving Capacitive Loads ISL78020 and ISL78022 can drive a wide range of capacitive loads. As load capacitance increases, however, the –3dB bandwidth of the device will decrease and the peaking will increase. The amplifiers drive 10pF loads in parallel with ...

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 GAMMA FB4 V GAMMA4 V GAMMA ...

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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