L4974A - ST Microelectronics

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

L4974A
Manufacturer

ST Microelectronics
ChipWorker Part#

CW8416504
Category

DC to DC Converter
Package

DIP-20
Description

Conv DC-DC 15V to 50V Step Down Single-Out 5.1V to 40V 3.5A 20Pin Power PDIP Tube
Documentation

Datasheet

L4974A Global Supplier

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L4974A Specifications

Attribute	Attribute Value

Part Number	L4974A
Manufacturer	ST Microelectronics
ChipWorker Part#	CW8416504
Category	DC to DC Converter
Documentation	Datasheet
Mounting Style	Through Hole
Number of Pins	20 Pin
Case/Package	DIP-20
Frequency	200 kHz
Supply Voltage (DC)	50.0V (max)
Operating Voltage	15V ~ 50V
Number of Outputs	1 Output
Input Voltage (DC)	50.0 V
Output Voltage	5.1V ~ 40V
Output Current	3.5 A
Number of Channels	1 Channel
Number of Positions	20 Position
Quiescent Current	19 mA
voltage rating	0.45 V
Switching Frequency	200 kHz
Topology	Buck
Input Voltage (Max)	50 V
Input Voltage (Min)	15 V
Output Voltage (Max)	40 V
Output Voltage (Min)	5.1 V
Output Current (Max)	3.5 A
Operating Temperature (Max)	150 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	15 V
Supply Voltage (Max)	50 V
Supply Voltage (Min)	15 V
Input Voltage	15V ~ 50V
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Size-Length	24.8 mm
Size-Width	7.1 mm
Size-Height	4.59 mm
Weight	0.004535924 kg
Operating Temperature	0℃ ~ 125℃
Product Lifecycle Status	Active
Packaging	Cut Tape (CT)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2014/06/16
ECCN Code	EAR99

Product Description

The L4974A is a step-down monolithic DC-DC Power Switching Regulator delivering 3.5A at a voltage variable from 5.1 to 40V. It is realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. It requires few external components. An efficient operation at switching frequencies up to 200KHz allows reduction in the size of external filter component.
Internal feed-forward line reg
Internal current limiting
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
Thermal shutdown
Continuous mode operation

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