L6738

Description 

The L6738 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 the management of conversions with power input VIN as low as 1.5 V and the device supply voltage ranging from 5 V to 12 V bus. The L6738 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 the generation of output voltages with ±0.5% accuracy over line and temperature variations. The oscillator is programmable up to 600 kHz. The L6738 provides a programmable dual-level overcurrent protection and overvoltage protection. The current information is monitored across the inductor DCR. The L6738 is available in a VFQFPN 16 3x3 mm package.

Features 

■ 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

Feature

(Picture: Pinout)