ST L6738ATR

The L6738A is a single-phase step-down controller with integrated high-current drivers that provides complete control logic and protection to realize a DC-DC converter. The device flexibility allows to manage conversions with power input VIN as low as 1.5V and the device supply voltage ranging from 5 V to 12 V bus. The L6738A features a proprietary algorithm that allows Light-Load efficiency optimization, boosting efficiency without compromising the output voltage ripple. The integrated 0.8 V reference allows generation of output voltages with ±0.5% accuracy over line and temperature variations. The oscillator is programmable up to 600 kHz. The L6738A provides a programmable overcurrent protection and overvoltage protection. The current information is monitored across the inductor DCR. The L6738A is available in a VFQFPN 16 3x3 mm package.

• Flexible power supply from 5 V to 12 V bus
• Power conversion input as low as 1.5 V
• Light-load efficiency optimization
• Embedded bootstrap diode
• VIN detector
• 0.8 V internal reference
• 0.5% output voltage accuracy
• Remote GND recovery
• High-current integrated drivers Sensorless and programmable precise-OC sense across Inductor DCR
• OV protection
• Programmable oscillator up to 600 kHz
• LS-less to manage pre-bias startup
• Adjustable output voltage
• Disable function
• Internal soft-start
• VFQFPN 16 3x3 mm package

• Memory and termination supply
• Subsystem power supply (MCH, IOCH, PCI)
• CPU and DSP power supply
• Distributed power supply
• General DC-DC converter