STMicroelectronics · Power management

L4977A

STMicroelectronics Power management · Multiwatt-15

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The L4977A is a Power management from STMicroelectronics, supplied in a Multiwatt-15 package. It is listed in our DC-DC Converters catalog (Power Management).

Key specifications of the L4977A: frequency - switching 180kHz~500kHz, output current 7A, output voltage 5.1V~40V, quiescent current 13mA, operating temperature -40°C~+150°C and function Step-down type.

PartnerSemi sources the L4977A for production, repair and maintenance buyers worldwide. Send the quantity you need and, optionally, a target price; we reply with price, lead time and available date codes, usually within one business day.

Specifications

Manufacturer part numberL4977A
ManufacturerSTMicroelectronics
Product typePower management
CategoryDC-DC Converters
Package / caseMultiwatt-15
Frequency - Switching180kHz~500kHz
FunctionStep-down type
Number of Outputs1
Operating Temperature-40°C~+150°C
Output Current7A
Output TypeAdjustable
Output Voltage5.1V~40V
Quiescent Current13mA
Switch tube (built-in/external)Built-in
Synchronous RectifierNo
TopologyBuck
Voltage - Supply15V~50V

Specifications are indicative and taken from public catalog data; always verify against the manufacturer's datasheet.

More STMicroelectronics DC-DC Converters

Part numberTypePackageKey specs
L4973V3.3 DC-DC Converters DIP-18 300kHz3.5A
L4973V5.1 DC-DC Converters DIP-18 300kHz3.5A
L4974A Power management DIP-20 200kHz3.5A
L4975A Power management Multiwatt-15 500kHz5A
L4978 Power management DIP-8 300kHz2A
L5950 DC-DC converter
L5956 DC-DC converter
L5957 DC-DC converter

Frequently asked questions

What is the L4977A?

The L4977A is a Power management from STMicroelectronics, supplied in a Multiwatt-15 package. It is listed in our DC-DC Converters catalog (Power Management).

What are the specifications of the L4977A?

Frequency - Switching: 180kHz~500kHz; Function: Step-down type; Number of Outputs: 1; Operating Temperature: -40°C~+150°C; Output Current: 7A; Output Type: Adjustable; Output Voltage: 5.1V~40V; Quiescent Current: 13mA; Switch tube (built-in/external): Built-in; Synchronous Rectifier: No; Topology: Buck; Voltage - Supply: 15V~50V.

What package is the L4977A in?

The L4977A is listed in a Multiwatt-15 package.

Which part numbers are similar to the L4977A?

Similar part numbers in our catalog include L4973V3.3 (STMicroelectronics), L4973V5.1 (STMicroelectronics), L4974A (STMicroelectronics), L4975A (STMicroelectronics), L4978 (STMicroelectronics) and L5950 (STMicroelectronics). Similar numbering does not guarantee compatibility; check the datasheets or ask us to confirm.

How can I buy the L4977A?

Request a quote from PartnerSemi at https://www.partnersemi.com/rfq/?mpn=L4977A&brand=STMicroelectronics or email info@partnersemi.com with the part number and quantity. Price, availability and lead time are confirmed per request; we ship worldwide from the Netherlands.