ISL78020 Datasheet, PDF (1/19 Pages) Intersil Corporation – Automotive Grade TFT-LCD DC/DC with Integrated Amplifiers

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Data Sheet
ISL78020, ISL78022
December 6, 2007
FN6386.2
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_ON and V_OFF, a
V_ON-slice circuit with adjustable delay and either one
(ISL78020) or five (ISL78022) amplifiers for V_COM and
V_GAMMA applications.
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_ON, V_OFF, as well as providing
start-up sequence control and fault protection.
The amplifiers are ideal for V_COM and V_GAMMA
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
PART NUMBER
(Note)
PART
MARKING
PACKAGE
(Pb-Free)
PKG.
DWG. #
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; 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.
Features
• Current mode boost regulator
- Fast transient response
- 1% accurate output voltage
- 18V/3A integrated FET
- >90% efficiency
• 2.6V to 5.5V V_IN supply
• 2 LDO controllers for V_ON and V_OFF
- 2% output regulation
- V_ON-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 7x7 TQFP package
• Pb-free (RoHS compliant)
Applications
• All automotive TFT-LCD panels
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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