G5562A Datasheet Text
Global Mixed-mode Technology
G5562A
Bias Power Supply with High-Speed Amplifier and
High-Accuracy LDO for LCD TVs
Features
- 8V to 14V Input Voltage Range
- 500kHz/750kHz Fixed Switching Frequency
- VS Step-Up Converter
Current Mode 1% Feedback Accuracy Output Voltage Range up to 20V 3A Switch Current Adjustable Soft Start Adjustable Current Limit
- VLOGIC Step-Down Converter Current Mode 1% Feedback Accuracy 2.5A Switch Current 2.5ms Internal Soft Start
- 150mA Negative Charge Pump Driver for VGL
- 150mA Positive Charge Pump Driver for VGH
- Integrated High Voltage Switch for Gate Voltage Shaping
- High Voltage LDO for VREF 0.5% Feedback Accuracy 0.5V Dropout at 60mA Output Current
- High-Speed Operational Amplifier 20MHz -3dB Bandwidth 45 V/µs Slew Rate ±200-mA Short-Circuit Current
- Gate Drive Signal to Drive External MOSFET
- XAO parator
- Thermal Shutdown
- Available in 7mmx7mm 48-pin TQFN Package
Applications
- LCD TV Panels
Ordering Information
ORDER NUMBER G5562AR11U Note: R1: TQFN7X7-48 1: Bonding Code U: Tape & Reel
MARKING 5562A
General Description
The G5562A DC-DC converter provides regulated voltages required by thin-film transistor (TFT) liquid crystal displays (LCD) panels in TQFN package. One step-up converter, one step-down converter, and two charge pumps convert the 8V to 14V input voltage into four output voltages. These Features plete the powersupply requirements of large screen LCD panels. The step-up converter provides source voltages VS and the step-down converter provides logic voltage for the system. The dual charge pumps independently generate adjustable regulated output voltages VGL and VGH to bias the LCD. These four blocks operate with a fixed switching frequency of 500kHz or 750kHz.
Both step-up...