STMicroelectronics L5972D
The L5972D is a step down monolithic power switching regulator with a minimum switch current limit of 2A so it is able to deliver more than 1.5A DC current to the load depending on the application conditions. The device uses an internal P-Channel D-MOS transistor (with a typical Rdson of 250mΩ) as switching element to minimize the size of the external components.| Part No. | L5972D |
|---|---|
| Datasheet | L5972D Download |
| Manufacturer |  STMicroelectronics |
| Description | 2A switch step down switching regulator |
| Buy | Stock & Price |
FEATURES
● 2A internal switch● Operating input voltage from 4.4V to 36V
● Output voltage adjustable from 1.235V to 35V
● Low dropout operation: 100% duty cycle
● 250kHz Internally fixed frequency
● Voltage feedforward
● Zero load current operation
● Internal current limiting
● Protection against feedback disconnection
● Thermal shutdown SO8
DESCRIPTION
APPLICATIONS
● Consumer: STB, DVD, TV, VCR, car radio, LCD monitors● Networking: XDSL, modems, DC-DC modules
● Computer: printers, audio/graphic cards, optical storage, hard disk drive
● Industrial: changers, car battery, DC-DC converters The output voltage can be set from 1.235V to 35V. An internal oscillator fixes the switching frequency at 250kHz. Having a minimum input voltage of 4.4V only, it is particularly suitable for 5V bus, available in all computer related applications. Figure 1. Test application circuit Pulse by pulse current limit with the internal frequency modulation offers an effective constant current short circuit protection.
