ISL97653A

Features:

• 5V to 14V Input Supply
• Integrated 4.4A Boost Converter
• Integrated V_ON Charge Pump and V_ON Slice Circuit
• Integrated V_OFF Charge Pump Output
• Integrated 2.5A Buck Converter
• LDO Controller for an Additional Logic Supply
• High Voltage Stress (HVS) Test Mode
• Thermal Shutdown
• 40 Ld QFN (6mmx6mm) Package
• Pb-Free (RoHS Compliant)




Application

• LCD-TVs
• Industrial/Medical LCD Displays




Pinout






Specifications

Maximum Pin Voltages, all pins except below . . . . . . . . 6.5V
LX1, LX2, SUPP, SUPN, NOUT, PROT, C1N, C2N . . . . . . . .24V
PVIN1, PVIN2, LXL1, LXL2 . . . . . . . . . . . . . . . . . . . . . . 16.8V
EN, CTL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . 16.5V
DRN, POUT, COM, C1P, C2P. . . . . . . . . . . . . . . . . . . . .. . .33V
CB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21V

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty.

Description

The ISL97653A represents a fully integrated supply IC for LCD-TV applications. With an input operating range of 4V to 14V, both commonly used LCD-TV input supplies, 5V and 12V, are supported. An AVDD supply up to 20V is generated by a high-performance PWM BOOST converter with an integrated 4.4A FET. VON is generated using an integrated charge pump with on-chip diodes and can be modulated using an on-chip VON slice control circuit. VOFF is generated using an integrated charge pump controller. Additionally, the chip allows for two logic supplies. A buck regulator with an included 2.5A high side switch is used for the main logic output and an internal LDO controller can be used to generate a second logic LDO output. To facilitate production test, an integrated HVS circuit is included which can provide high voltage stress of the LCD panel. An on-board temperature sensor is also provided for system thermal management control. The ISL97653A is packaged in a 40 Ld 6mmx6mm QFN package and is specified for operation over the -40C to +105C temperature range.