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See Technical Specifications

L4973D3.3

This converter is ideal for use in various electronic applications requiring a stable and efficient power supply

Manufacturer:

Stmicroelectronics
Mfr.Part #:

L4973D3.3
Datasheet:

L4973D3.3 Datasheet (PDF)
Output Voltage:

3.36 V
Output Current:

3.5 A
Input Voltage, Max:

55 V
Number of Outputs:

1 Output
EDA/CAD Models:

Request Free CAD Models for L4973D3.3

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L4973D3.3 General Description

Inhibit for zero current consumption (100mA at VCC= 24V)Input/output synchronization functionThermal shutdownProtection against feedback disconnectionSoft start functionOutput over voltage protectionInternal current limiting (pulse by pulse and HICCUP mode)Zero load current operation (min 1mA)Up to 3.5A step down converter3.3V and 5.1V (±1%) fixed output, and adjustable outputs from:0.5V to 50V (3.3 type)5.1V to 50V (5.1 type)Operating input voltage from 8V to 55VVoltage feed forwardPrecise 5.1V (1.5%) reference voltage externally availableFrequency adjustable up to 300kHz

Key Features

3.3V fixed output voltage
Output current up to 2A
Wide input voltage range (4.4V to 36V)
Low dropout voltage (0.75V typ.)
Internal current limiting and thermal shutdown
Adjustable output voltage version available

Application

Low voltage DC-DC converters
Step-down converters
Telecommunication systems
Industrial control systems
Automotive applications
Battery-powered devices
Point of load regulation
Power supply modules
Portable electronics
LED lighting

Specifications

Product Category	Switching Voltage Regulators	Output Voltage	3.36 V
Output Current	3.5 A	Input Voltage, Max	55 V
Number of Outputs	1 Output	Topology	Buck
Mounting Style	SMD/SMT	Switching Frequency	100 kHz
Quiescent Current	2.7 mA	Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 150 C	Series	L4973
Input Voltage, Min	8 V	Height	2.35 mm
Input Voltage	8 V to 55 V	Length	13 mm
Moisture Sensitive	Yes	Operating Supply Current	16 mA
Pd - Power Dissipation	4 W	Product Type	Switching Voltage Regulators
Shutdown	Shutdown	Factory Pack Quantity	1000
Subcategory	PMIC - Power Management ICs	Supply Voltage - Min	8 V
Type	Step-Down	Width	7.6 mm
Unit Weight	0.009408 oz