L4972AD - ST Microelectronics

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

Part No

L4972AD
Manufacturer

ST Microelectronics
ChipWorker Part#

CW16828900
Category

DC to DC Converter
Package

SOIC-20
Description

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

Datasheet

L4972AD Global Supplier

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L4972AD Specifications

Attribute	Attribute Value

Part Number	L4972AD
Manufacturer	ST Microelectronics
ChipWorker Part#	CW16828900
Category	DC to DC Converter
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	20 Pin
Case/Package	SOIC-20
Number of Outputs	1 Output
Output Voltage	5.1V ~ 40V
Output Current	2 A
Number of Positions	20 Position
Output Power	3.75 W
Switching Frequency	100 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
Input Voltage	15V ~ 50V
	expand all
Size-Length	13 mm
Size-Width	7.6 mm
Size-Height	2.35 mm
Operating Temperature	-40℃ ~ 150℃
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	2015/12/17
ECCN Code	EAR99

Product Description

The L4972AD 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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- Anti-vibration foam
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