LV514495-V, Synchronous, Buck DC/DC Controller With Wide Duty Cycle Range

1 Features

- Device temperature grade 1: –40°C to +125°C ambient temperature range
Versatile synchronous buck DC/DC controller
- 6-V to 95-V wide input voltage range
- 125°C maximum junction temperature
- 0.8-V reference with ±1% feedback accuracy
- 0.8-V to 60-V adjustable output voltage
- 45-ns t_ON(min) for high V_IN / V_OUT ratio
- 145-ns t_OFF(min) for low dropout
- Lossless R_DS(on) or shunt current sensing
- Optimized for CISPR 11 and CISPR 32 Class B EMI requirements
100-kHz to 1-MHz switching frequency
- SYNC in and SYNC out capability
- Selectable diode emulation or FPWM
7.5-V gate drivers for standard V_TH MOSFETs
- 14-ns adaptive dead-time control
- 2.3-A source and 3.5-A sink capability
Inherent protection features for robust design
- Adjustable output voltage soft start
- Hiccup-mode overcurrent protection
- Input UVLO with hysteresis
- VCC and gate-drive UVLO protection
- Precision enable input and open-drain PGOOD indicator for sequencing and control
- Thermal shutdown protection with hysteresis
20-pin VQFN package with wettable flanks