- 8V to 16.5V input supply
- AVDD boost up to 19.0V, with integrated 4.0APEAK FET
- HAVDD synchronous buck for 8V with 1APEAK FET
- Overvoltage protection (OVP)
- Internal AVDD delay FET
- Dual linear regulator controllers for VON and VOFF
- VON temperature compensation
- VIO buck with integrated 2APEAK FET
- VCORE synchronous buck with integrated 1APEAK FET
- Internal feedback and compensation
- Programmable output control with IIC
- Programmable sequencing with IIC
- UVLO and OTP protection
- Thermally enhanced 5x5 Thin QFN package
- Pb-free (RoHS compliant)
The ISL98604 is a high power, fully programmable 6-Channel output control IC targeted at large panel LCD displays. The ISL98604 integrates a high power, boost converter and delay switch for AVDD generation, one VIO asynchronous buck regulator, two synchronous buck regulators for HAVDD and VCORE supply generation, and linear regulator controllers for VON and VOFF charge pumps.
Operating at 750kHz, the AVDD boost converter features a 4.0A boost FET and 6-bit resolution programmable from 12.7V to 19.0V. The delay switch is also integrated for power sequence.
The asynchronous buck converter for VIO supply features an integrated 2A FET. It also operates at 750kHz internal clock and compensation features.
The two synchronous bucks are integrated with controller, upper, and lower side switches for HAVDD and VCORE generation with internal compensation. The HAVDD and VCORE outputs are both programmable ranging from 6.4V to 9.55V and 0.9V to 2.4V, respectively.
Dual linear regulator controllers are provided to allow generation of accurate VON and VOFF voltages in conjunction with external charge pumps and bipolar power transistors. VON output voltage can be compensated adoptively by temperature sensing.
All output voltages are programmed through IIC and stored in EEPROM. Alternative factory set voltages may be available for the ISL98604.
- LCD TV
|VIN (min) (V)||8||2.3||9.5||2.5|
|VIN (max) (V)||16.5||5.5||15||5.5|
|VBOOST (min)||12.7 V||10.83 V||0 V|
|VBOOST (max)||19 V||19 V||15 V|
|Boost Current Limit (A)||4||5.5||1.5|
|VON/VP (min) (V)||34||7|
|VON/VP (max) (V)||19||36||33|
|VOFF/VN (min) (V)||-8.1||-10||-10|
|VOFF/VN (max) (V)||-1.8||0|
|VLOGIC (min) (V)||3||2.5, 0.9||0.8|
|VLOGIC (max) (V)||3.7||3.3, 2||VIN|
|# of VCOM||N/A||N/A||1|
|# of Gamma||N/A||N/A||0|
|Features||Over/Under voltage and Over temp protection; Programmable sequencing and output control||Automatic Start-Up Sequencing, fault protection||UVLO, UVP, OVP, OCP, and OTP Protection|