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L4970 Datasheet PDF

Part Series:L4970 Series
Category:DC-DC Converters
Description:Conv DC-DC 15V to 50V Step Down Single-Out 5.1V to 40V 10A 15Pin(15+Tab) MULTIWATT V
Document:L4970A Datasheet PDF (22 Pages)

L4970 DC-DC Converters Datasheet PDF

#1
L4970A
5.3
ST Microelectronics

L4970A - ST Microelectronics Specifications

TYPE
DESCRIPTION
Mounting Style
Through Hole
Frequency
500 kHz
Number of Pins
15 Pin
Supply Voltage (DC)
50.0V (max)
Case/Package
Multiwatt-15
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L4970A - ST Microelectronics Function Overview

The L4970A is a Step-down Monolithic Power Switching Regulator IC delivering 10A at a voltage variable from 5.1 to 40V. This device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. Features of this 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 multi-watt 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.
0 to 90% Duty cycle range
Internal feed-forward line regulation
Internal current limiting
Precise 5.1V ±2% on-chip reference
Reset and power fail functions
Input/output sync pin
Under voltage lock out with hysteretic turn-on
PWM latch for single pulse per period
Very high efficiency
Continuous mode operation
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