L4972A - ST Microelectronics

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

Part No

L4972A
Manufacturer

ST Microelectronics
ChipWorker Part#

CW10443837
Category

Voltage Regulator
Package

PDIP-20
Description

Conv DC-DC 15V to 50V Step Down Single-Out 5.1V to 40V 2A 20Pin Power PDIP
Documentation

Datasheet

L4972A Global Supplier

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L4972A Specifications

Attribute	Attribute Value

Part Number	L4972A
Manufacturer	ST Microelectronics
ChipWorker Part#	CW10443837
Category	Voltage Regulator
Documentation	Datasheet
Mounting Style	Through Hole
Number of Pins	20 Pin
Case/Package	PDIP-20
Frequency	200 kHz
Supply Voltage (DC)	50.0V (max)
Number of Outputs	1 Output
Input Voltage (DC)	50.0 V
Output Voltage	5.1V ~ 40V
Output Current	2 A
Number of Channels	1 Channel
Number of Positions	20 Position
voltage rating	250 mV
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)	2 A
Operating Temperature (Max)	150 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	15 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
Operating Temperature	-40℃ ~ 150℃ (TJ)
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/12/17

Product Description

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

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