L5973D DC-DC Switching Converters by STMicroelectronics

Up to 2 A step down switching regulator


The L5973D is a step down monolithic power switching regulator with a minimum switch current limit of 2.5 A so it is able to deliver more than 2 A DC current to the load depending on the application conditions. The output voltage can be set from 1.235 V to 35 V. 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 mΩ) as switching element to minimize the size of the external components. An internal oscillator fixes the switching frequency at 250 kHz. Having a minimum input voltage of 4 V only, it is particularly suitable for 5 V bus, available in all computer related applications. Pulse by pulse current limit with the internal frequency modulation offers an effective constant current short circuit protection.

Where to Buy

Prices starting from US$0.98

Distributor Stock
Logo for Future Electronics NA
Future Electronics
from US$1.00
2,850
in stock
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Logo for TME
TME
from US$1.68
1,964
in stock
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Logo for RS UK
RS
from US$1.81
1,030
in stock
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EBV Elektronik
-
4,600
in stock
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Avnet Silica
-
900
in stock
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Logo for Avnet America
Avnet America
from US$0.98
0
in stock
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Logo for RS Americas
RS Americas
from US$3.86
0
in stock
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element14
from US$1.30
0
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Buerklin
from US$1.83
0
in stock
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Farnell
from US$1.12
0
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Ozdisan
from US$2.14
0
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Features

2.5 A internal switch
Operating input voltage from 4 V to 36 V
3.3 V / (±2%) reference voltage
Output voltage adjustable from 1.235 V to 35 V
Low dropout operation: 100 % duty cycle
250 kHz internally fixed frequency
Voltage feedforward
Zero load current operation
Internal current limiting
Synchronization
Adjustable soft-start time
Inhibit for zero current consumption
Protection against feedback disconnection
Thermal shutdown

Last 6 months Inventory & Pricing History


Alternative Descriptions

L5973D Series 36 V 300 uA 250 kHz Switch Step Down Switching Regulator - HSOP-8 | Future Electronics
Driver | TME
STMicroelectronics L5973D Buck Converter | RS
PWR SPLY FUNC, REGULATOR, LDO, SWITCHING, HSOP-8,VS 12V, IS 2.5MA, PD 2.25W, VO 35V | RS Americas
IC, BUCK REG, SMD, 5973, HSOP8 | element14
Spannungsregler, 2,5 V, 1,235 kV, 35 V | Buerklin


Frequently Asked Questions

Where can I find additional details, specifications and documents for a L5973D?

Additional datasheets, footprints and schematics for L5973D are listed on our Part Details page. You can also find images and similar parts to L5973D on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for L5973D on our Product Comparison page. Access via the 'View Pricing & Stock' button to view L5973D price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does L5973D fall under?

The L5973D is listed under Power Management > DC-DC Switching Converters > Buck Regulators.

Can I view similar or alternative parts?

You can view similar parts to L5973D when available in the Buck Regulators range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the L5973D you can contact the distributor directly for product support, shipping queries etc.

Is the L5973D RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for L5973D have stock available?

Authorised distributors including Future Electronics, TME, RS, EBV Elektronik and Avnet Silica have stock available or on a lead time for L5973D.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for L5973D often in real-time on the comparison pages.

What if I can't find stock of L5973D?

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