L5973D - ST Microelectronics

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

Part No

L5973D
Manufacturer

ST Microelectronics
ChipWorker Part#

CW191559
Category

DC to DC Converter
Package

HSOP-8
Description

Conv DC-DC 4V to 36V Step Down Single-Out 1.235V to 35V 2A 8Pin HSOP EP Tube
Documentation

Datasheet

L5973D Global Supplier

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L5973D Specifications

Attribute	Attribute Value

Part Number	L5973D
Manufacturer	ST Microelectronics
ChipWorker Part#	CW191559
Category	DC to DC Converter
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	8 Pin
Case/Package	HSOP-8
Frequency	250 kHz
Supply Voltage (DC)	36.0V (max)
Operating Voltage	4.4V ~ 36V
Power Rating	2.25 W
Number of Outputs	1 Output
Output Voltage	1.235V ~ 35V
Output Current	2.5 A
Number of Channels	1 Channel
Number of Positions	8 Position
Quiescent Current	2.5 mA
Switching Frequency	275 kHz
Input Voltage (Max)	36 V
Input Voltage (Min)	4 V
Output Voltage (Max)	35 V
Output Voltage (Min)	1.235 V
Output Current (Max)	2 A
Operating Temperature (Max)	150 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	4 V
Input Voltage	36 V
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Size-Length	5 mm
Size-Width	4 mm
Size-Height	1.65 mm
Operating Temperature	-40℃ ~ 150℃
Product Lifecycle Status	Active
Packaging	Tube
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 L5973D is a step down monolithic power switching regulator with a minimum switch current limit of 2.5A so it is able to deliver more than 2A DC current to the load depending on the application conditions. The output voltage can be set from 1.235V to 35V. The high current level is also achieved thanks to an SO8 package with exposed frame, that allows to reduce the Rth(j-amb) down to approximately 40°C/W. The device uses an internal P-channel D-MOS transistor (with a typical Rdson of 250 mR) as switching element to minimise the size of the external components. An internal oscillator fixes the switching frequency at 250kHz.
2.5A internal switch
3.3V/(±2%) reference voltage
Output voltage adjustable from 1.235V to 35V
Low dropout operation: 100% duty cycle
250kHz internally fixed frequency
Voltage feed-forward
Zero load current operation
Internal current limiting
Inhibit for zero current consumption
Synchronisation
Protection against feedback disconnection
Thermal shutdown

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