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L4970A

Step-down type Adjustable 5.1V~40V 10A 15V~50V Multiwatt-15 DC-DC Converters ROHS

email Email: [email protected]
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tel Tel: +852 95804164

L4970A General Description

The L4970A is a stepdown monolithic power switching regulator delivering 10A 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 L4970A include reset and power fail for microprocessors, feed forward line regulation, soft start, limiting current and thermal protection. The device is mounted in a 15-lead multiwatt plastic power package and requires few external components.Efficient operation at switching frequencies up to 500KHz allows reduction in the size and cost of external filter components.

Key Features

  • UNDER VOLTAGE LOCK OUT WITH HYSTERETIC TURN-ON
  • INPUT/OUTPUT SYNC PIN
  • VERY HIGH EFFICIENCY
  • PWM LATCH FOR SINGLE PULSE PER PERIOD
  • THERMAL SHUTDOWN
  • SWITCHING FREQUENCY UP TO 500KHz
  • CONTINUOUS MODE OPERATION
  • RESET AND POWER FAIL FUNCTIONS
  • PRECISE 5.1V ± 2% ON CHIP REFERENCE
  • 10A OUTPUT CURRENT
  • 0 TO 90% DUTY CYCLE RANGE
  • 5.1V TO 40V OUTPUT VOLTAGE RANGE
  • INTERNAL CURRENT LIMITING
  • SOFT START
  • INTERNAL FEED-FORWARD LINE REGULATION

Specifications

Input Voltage Min Volt 15.0 Input Voltage Max Volt 50.0
ECCN US EAR99 ECCN EU NEC
Packing Type Tube Grade Industrial

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