- 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)
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.
- All automotive TFT-LCD panels
|VIN (min) (V)||2.6||2.3||3||2.5|
|VIN (max) (V)||5.5||5.5||5.5||5.5|
|VBOOST (min)||2.99 V||5.5 V||0 V|
|VBOOST (max)||18 V||20 V||15 V|
|Boost Current Limit (A)||3||2||1.5|
|VON (min) (V)||15||15||7|
|VON (max) (V)||36||36||33|
|VOFF (min) (V)||-25||-20||-10|
|VOFF (max) (V)||-5||-5||0|
|VLOGIC (min) (V)||N/A||1.3||0.8|
|VLOGIC (max) (V)||N/A||VDD - 0.2||VIN|
|# of VCOM||1||N/A||1|
|# of Gamma||4||N/A||0|