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See Technical Specifications

L4972A +BOM

2 A SWITCHING REGULATOR

Manufacturer:

STMicroelectronics, Inc
Mfr.Part #:

L4972A
Datasheet:

L4972A Datasheet (PDF)
Function:

Step-Down
Output Configuration:

Positive
Topology:

Buck
Output Type:

Adjustable
EDA/CAD Models:

Request Free CAD Models for L4972A

L4972A General Description

The L4972A voltage regulator IC from STMicroelectronics is a highly versatile and efficient solution for a wide range of power supply applications. With its wide input voltage range and fixed output voltage options, it is well-suited for automotive, industrial, and consumer electronics designs. The inclusion of a PWM controller, error amplifier, and adjustable switching frequency allows for precise control and optimization of power delivery, while overcurrent and overtemperature protection ensure safe and reliable operation. The high efficiency of up to 85% further enhances its performance, making it an ideal choice for applications where power dissipation and reliability are critical factors

Key Features

PWM LATCH FOR SINGLE PULSE PER PERIOD
UNDER VOLTAGE LOCK OUT WITH HYSTERETIC TURN-ON
SWITCHING FREQUENCY UP TO 200KHz
VERY HIGH EFFICIENCY
CONTINUOUS MODE OPERATION
THERMAL SHUTDOWN
RESET AND POWER FAIL FUNCTIONS
PRECISE 5.1V ± 2% ON CHIP REFERENCE
2A OUTPUT CURRENT
0 TO 90% DUTY CYCLE RANGE
5.1V TO 40V OUTPUT VOLTAGE RANGE
INTERNAL CURRENT LIMITING
INPUT/OUTPUT SYNC PIN
INTERNAL FEED-FORWARD LINE REG.

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Voltage Regulators - DC DC Switching Regulators	Series	-
Function	Step-Down	Output Configuration	Positive
Topology	Buck	Output Type	Adjustable
Number of Outputs	1	Voltage - Input (Min)	15V
Voltage - Input (Max)	50V	Voltage - Output (Min/Fixed)	5.1V
Voltage - Output (Max)	40V	Current - Output	2A
Frequency - Switching	100kHz ~ 200kHz	Synchronous Rectifier	No
Operating Temperature	-40°C ~ 150°C (TJ)	Mounting Type	Through Hole
Base Product Number	L4972	Product Category	Switching Voltage Regulators
Mounting Style	Through Hole	Output Voltage	5.1 V to 40 V
Output Current	2 A	Input Voltage, Min	15 V
Input Voltage, Max	55 V	Quiescent Current	13 mA
Switching Frequency	200 kHz	Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 150 C	Height	4.59 mm
Input Voltage	15 V to 50 V	Length	24.8 mm
Operating Supply Current	16 mA	Product Type	Switching Voltage Regulators
Shutdown	Shutdown	Factory Pack Quantity	1000
Subcategory	PMIC - Power Management ICs	Supply Voltage - Min	15 V
Type	Step-Down	Width	7.1 mm
Unit Weight	0.079719 oz