L7981A - ST Microelectronics

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

Part No

L7981A
Manufacturer

ST Microelectronics
ChipWorker Part#

CW34723039
Category

DC to DC Converter
Package

HSOP-8
Description

Conv DC-DC 4.5V to 28V Step Down Single-Out 0.6V to 28V 3A 8Pin HSOP EP Tube
Documentation

Datasheet

L7981A Global Supplier

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L7981A Specifications

Attribute	Attribute Value

Part Number	L7981A
Manufacturer	ST Microelectronics
ChipWorker Part#	CW34723039
Category	DC to DC Converter
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	8 Pin
Case/Package	HSOP-8
Number of Outputs	1 Output
Output Voltage	0.6V ~ 28V
Output Current	3 A
Number of Positions	8 Position
Switching Frequency	1 MHz
Input Voltage (Max)	28 V
Input Voltage (Min)	4.5 V
Output Voltage (Max)	28 V
Output Voltage (Min)	600 mV
Output Current (Max)	3 A
Operating Temperature (Max)	150 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	4.5 V
Input Voltage	4.5V ~ 28V
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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 L7981A is a step-down Switching Regulator with a 3.7A (minimum) current limited embedded power MOSFET, so it is able to deliver up to 3A current to the load depending on the application conditions. The input voltage can range from 4.5 to 28V, while the output voltage can be set starting from 0.6V to VIN. Requiring a minimum set of external components, the device includes an internal 250kHz switching frequency oscillator that can be externally adjusted up to 1MHz.
Internal soft-start and enable
Voltage feed-forward
Zero load current operation
Overcurrent and thermal protection
100% Duty cycle of low dropout operation

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