L4972A DC-DC Switching Converters by STMicroelectronics

2 A SWITCHING REGULATOR


The L4972A is a stepdown monolithic power switching regulator delivering 2A at a voltage variable from 5.1 to 40V. Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. Features of the L4972 include reset and power fail for microprocessors, feed forward line regulation, soft start, limiting current and thermal protection. The device is mounted in a Powerdip 16 + 2 + 2 and SO20 large plastic packages and requires few external components. Efficient operation at switching frequencies up to 200KHz allows reduction in the size and cost of external filter component.

Where to Buy

Prices starting from US$4.24

Distributor Stock
Logo for Farnell
Farnell
from US$4.24
112
in stock
Buy Now
Logo for Newark Electronics
Newark Electronics
from US$5.96
112
in stock
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Logo for element14
element14
from US$4.30
112
in stock
Buy Now
Logo for Avnet America
Avnet America
-
-
Buy Now

Features

PWM LATCH FOR SINGLE PULSE PER PERIOD
UNDER VOLTAGE LOCK OUT WITH HYSTERETIC TURN-ON
SWITCHING FREQUENCY UP TO 200KHz
VERY HIGH EFFICIENCY
CONTINUOUS MODE OPERATION
THERMAL SHUTDOWN
RESET AND POWER FAIL FUNCTIONS
PRECISE 5.1V ± 2% ON CHIP REFERENCE
2A OUTPUT CURRENT
0 TO 90% DUTY CYCLE RANGE
5.1V TO 40V OUTPUT VOLTAGE RANGE
INTERNAL CURRENT LIMITING
INPUT/OUTPUT SYNC PIN
INTERNAL FEED-FORWARD LINE REG.

Alternative Descriptions

Dc-Dc Switching Buck (Step Down) Regulator, Adjustable, 15V-50Vin, 5.1V-40Vout, 2Aout, Dip-20 Rohs Compliant: Yes |Stmicroelectronics L4972A | Newark Electronics
IC, SWITCHING REG 2A, 4972, DIP20 | element14
Conv DC-DC Single Step Down 15V to 50V 20-Pin Power PDIP | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a L4972A?

Additional datasheets, footprints and schematics for L4972A are listed on our Part Details page. You can also find images and similar parts to L4972A on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for L4972A on our Product Comparison page. Access via the 'View Pricing & Stock' button to view L4972A price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does L4972A fall under?

The L4972A is listed under Power Management > DC-DC Switching Converters > Buck Regulators.

Can I view similar or alternative parts?

You can view similar parts to L4972A 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 L4972A you can contact the distributor directly for product support, shipping queries etc.

Is the L4972A RoHS compliant?

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

Which authorised distributors for L4972A have stock available?

Authorised distributors including Newark Electronics, element14, Farnell and Avnet America have stock available or on a lead time for L4972A.

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

Stock availability and lead times will be displayed for L4972A often in real-time on the comparison pages.

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