STMicroelectronics L3751
The 6 V to 75 V wide input voltage range L3751 synchronous buck controller features extreme voltage conversion ratio over switching frequency range (100 kHz - 1 MHz) thanks to 40 ns minimum conduction time. The diode emulation (DEM) implements pulse skipping mode that maximizes the efficiency at light-load giving controlled output voltage ripple.| Part No. | L3751 |
|---|---|
| Datasheet | L3751 Download |
| Manufacturer |  STMicroelectronics |
| Description | Wide 6V to 75V input voltage synchronous buck controller |
| Buy | Stock & Price |
FEATURES
● Wide 6 V to 75 V input voltage range● Adjustable output voltage from 0.8 V to 60 V
● 100 kHz - 1 MHz switching frequency range
● 40 ns minimum on-time for extreme duty ratio
● Low dropout operation during line transient
● Adjustable soft-start or input voltage tracking
● Pulse skipping or forced PWM operation at light load
● Synchronization
● Adjustable precision enable
● Power Good open collector output validates VOUT
● 7.5 V gate drivers for standard VTH MOSFETs
● Constant current protection with hiccup mode
● Precision or lossless programmable current sensing
● Improved line transient response
● Input voltage undervoltage lockout
● Internal voltage monitoring
● Thermal protection
● Operating junction temperature range: -40 °C to 150 °C
APPLICATIONS
● Telecom, networking and industrial applications● Failsafe systems
● Unregulated 24 V and 48 V input voltage bus
● Conversion from high voltage battery to 12 V and 5 V rail
DESCRIPTION
The forced PWM (FPWM) over the load range makes the switching frequency constant and minimizes the output voltage ripple.
