Image is for your reference only,please check specifications for details

L4974A - ST Microelectronics
Manufacturer:
ST Microelectronics
ManyChip's Part#:
MC8416504
Category:
DC to DC Converter
Package:
DIP-20
Datasheet:
Datasheet 3D Model
Description:
Conv DC-DC 15V to 50V Step Down Single-Out 5.1V to 40V 3.5A 20Pin Power PDIP Tube
Stock Locations:
Availability:
295 pcs In Stock
MOQ:
1 pcs
Unit Price:
$ 3.4

Updated at 17/06/2025 10:30:15(UTC+8)

Certifications

ManyChip is committed to product quality and safety with ISO 9001, ISO 13485, ISO 45001, UL, RoHS, CQC and REACH certifications.

Description

The L4974A is a step-down monolithic DC-DC Power Switching Regulator delivering 3.5A at a voltage variable from 5.1 to 40V. It is realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. It requires few external components. An efficient operation at switching frequencies up to 200KHz allows reduction in the size of external filter component.
Internal feed-forward line reg
Internal current limiting
Reset and power fail functions
Input/output sync pin
Under-voltage lock out with hysteretic turn-ON
PWM latch for single pulse per period
Very high efficiency
Thermal shutdown
Continuous mode operation

Show

L4974A Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Through Hole
Number of Pins	20 Pin
Case/Package	DIP-20
Frequency	200 kHz
Supply Voltage (DC)	50.0V (max)
Operating Voltage	15V ~ 50V
Number of Outputs	1 Output
Input Voltage (DC)	50.0 V
Output Voltage	5.1V ~ 40V
Output Current	3.5 A
Number of Channels	1 Channel
Number of Positions	20 Position
Quiescent Current	19 mA
voltage rating	0.45 V
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)	3.5 A
Operating Temperature (Max)	150 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	15 V
Supply Voltage (Max)	50 V
Supply Voltage (Min)	15 V
Input Voltage	15V ~ 50V
	Show
Size-Length	24.8 mm
Size-Width	7.1 mm
Size-Height	4.59 mm
Weight	0.004535924 kg
Operating Temperature	0℃ ~ 125℃
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	2014/06/16
ECCN Code	EAR99

TT in advance (bank transfer), Western Union, Credit card,
PayPal. Customer is responsible for shipping fee, bank
charges, duties and taxes.
- You can choose whether shipping charges will be charged through your shipping account or by us.
- Please confirm with the logistics company in advance for remote areas.
(Additional charges ($35-$50) may apply for delivery in these areas)
- Delivery date: usually 2 to 7 working days.
- A tracking number will be sent after your order ships.
- Carefully inspected and packed by ManyChip warehouse
- Vacuum packaging
- Anti-static packaging
- Shockproof foam
The terms here are for reference only, the actual terms are subject to the sales quotation.
- Please confirm product specifications when ordering.
- MOQ refers to the minimum order quantity required to purchase each part.
- If you have special ordering instructions, please indicate them on the ordering page.
- Inspection (PSI) will be performed prior to shipment.
- Income Quality Control (IQC), 1000+ qualified dealers.
- Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device.
- Decapsulation control
- X-ray control
- XRF inspection
- Electrical testing
- Surface testing
-Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity

If you have any problem,please email to sales@manychip.com, we will response as soon as possisble.

SN:H4.20878LO29491V57Q0QC0S0

Please fill the information below to send RFQ quickly,and we will respond immediately.