Product Summary

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 output voltage can be set from 1.235V to 35V. The device uses an internal P-Channel D-MOS transistor(with a typical Rdson of 250mW) as switching element to minimize the size of the external components. The applications of the L5972D include: (1)consumer: STB, DVD, TV, VCR,CAR RADIO, LCD monitors; (2)networking: XDSL, MODEMS, DC-DC modules; (3)computer: printers, audio/graphic cards, optical storage, hard disk drive; (4)industrial: chargers, car battery DC-DC converters.

Parametrics

L5972D absolute maxing ratings: (1)V8 Input Voltage: 40V; (2)V1 Out pin DC voltage: -1 to 40V; Out pin peak voltage at △t=0.1μs: -5 to 40V; (3)I1 Maximum output current: int. limit.; (4)V4, V5 Analog pins: 4V; (5)Ptot Power dissipation at Tamb≦70℃: 1.2W; (6)Tj Operating junction temperature range: -40 to 150℃; (7)Tstg Storage temperature range: -55 to 150℃.

Features

L5972D features: (1)2A internal switch; (2)operating input voltage from 4.4V to 36V; (3)output voltage adjustable from 1.235V to 35V; (4)low dropout operation: 100% duty cycle; (5)250KHz internally fixed frequency; (6)voltage feed for ward; (7)zero load current operation; (8)internal current limiting; (9)protection against feedback disconnection; (10)thermal shutdown.

Diagrams

L5972D diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
L5972D013TR
L5972D013TR
STMicroelectronics
Switching Converters, Regulators & Controllers 1.235 to 35V Step-Dn
Data Sheet
0-1: $1.41
1-25: $1.23
25-100: $1.15
100-250: $1.09
L5972D
L5972D
STMicroelectronics
Switching Converters, Regulators & Controllers 1.235 to 35V Step-Dn
Data Sheet
0-1: $1.41
1-10: $1.29
10-100: $1.15
100-250: $1.09