The ISL78020 and ISL78022 integrate a high performance

boost regulator with 2 LDO controllers for VON and VOFF, a

VON-slice circuit with adjustable delay and either one

(ISL78020) or five (ISL78022) amplifiers for VCOM and

VGAMMA 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 VON, VOFF, as well as providing

start-up sequence control and fault protection.

The amplifiers are ideal for VCOM and VGAMMA

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.

Features

• Current mode boost regulator

- Fast transient response

- 1 accurate output voltage

- 18V/3A integrated FET

- >90 efficiency

• 2.6V to 5.5V VIN supply

• 2 LDO controllers for VON and VOFF

- 2 output regulation

- VON-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