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L4972A

DC-DC Switching Buck (Step Down) Regulator, Adjustable, 15V-50Vin, 5.1V-40Vout, 2Aout, DIP-20

STMICROELECTRONICS L4972A

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Manufacturer Part No:
L4972A
Order Code:
1094219
Technical Datasheet:
L4972A   Datasheet
See all Technical Docs

Product Overview

The L4972A is a step-down monolithic power Switching Regulator delivering 2A at a voltage variable from 5.1 to 40V. Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. Features of the L4972 include reset and power fail for microprocessors, feed forward line regulation, soft-start, limiting current and thermal protection. Efficient operation at switching frequency up to 200kHz allows reduction in the size and cost of external filter component.
  • PWM latch for single pulse per period
  • Undervoltage lockout with hysteretic turn-on
  • Very high efficiency
  • Continuous mode operation
  • Thermal shutdown
  • Reset and power-fail functions
  • Internal current limiting
  • Input/output sync pin
  • Internal feed-forward line regulation
  • Precise 5.1V ±2% on chip reference
  • 0 to 90% duty cycle range

Applications

Power Management

Product Information

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:
Buck (Step Down)

:
15V

:
50V

:
1Outputs

:
DIP

:
20Pins

:
2A

:
5.1V

:
40V

:
200kHz

:
150°C

:
-

:
-

:
-
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Technical Docs (3)

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