STMicroelectronics L4976
The L4976 is a step-down monolithic power switching regulator delivering 1 A at a voltage between 3.3 V and 50 V (selected by a simple external divider).| Part No. | L4976 |
|---|---|
| Datasheet | L4976 Download |
| Manufacturer |  STMicroelectronics |
| Description | 1A step-down switching regulator |
| Buy | Stock & Price |
FEATURES
● Up to 1 A step-down converter● Operating input voltage from 8 V to 55 V
● Precise 5.1 V reference voltage
● Output voltage adjustable from 0.5 V to 50 V
● Switching frequency adjustable up to 300 kHz
● Voltage feed-forward
● Zero load current operation
● Internal current limiting (pulse-by-pulse and hiccup mode)
● Protection against feedback disconnection
● Thermal shutdown Datasheet - production data
DESCRIPTION
Realized in BCD mixed technology, the device uses an internal power DMOS transistor (with a typical Rds(ON) of 0.25 Ω) to obtain very high efficency and high switching speed. A switching frequency up to 300 kHz is achievable (the maximum power dissipation of the packages must be observed). A wide input voltage range between 8 V to 55 V and output voltages regulated from 3.3 V to 40 V cover the majority of today’s applications.FEATURES
of this new generations of DC-DC converter include pulse-by-pulse current limit, hiccup mode for short circuit protection, voltage feedforward regulation, protection against feedback loop disconnection and thermal shutdown.
