A5973ADTR DC-DC Switching Converters by STMicroelectronics

Up to 1.5 A step-down switching regulator for automotive applications

Status: Active
Series: A5973AD
RoHS: Compliant
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The A5973AD is a step-down monolithic power switching regulator with a minimum switch current limit of 1.8 A, so it is able to deliver up to 1.5 A DC current to the load depending on the application conditions. The output voltage can be set from 1.235 V to V IN . The high current level is also achieved thanks to an HSOP8 package with an exposed frame, that allows to reduce the R th(JA) down to approximately 40 °C/W. The device uses an internal P-channel DMOS transistor (with a typical R DS(on) of 250 mΩ) as a switching element to minimize the size of the external components. An internal oscillator fixes the switching frequency at 500 kHz. Having a minimum input voltage of 4 V only it fits the automotive applications requiring the device operation even in cold crank conditions. A pulse-by-pulse current limit with the internal frequency modulation offers an effective constant current short-circuit protection.

Prices starting from US$1.61

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Logo for Farnell Farnell US$1.61
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Logo for Future Electronics Future Electronics US$1.98
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Logo for Avnet America Avnet America US$2.24
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Qualified following the AEC-Q100 requirements (see PPAP for more details)
1.5 A DC output current
Operating input voltage from 4 V to 36 V
3.3 V / (± 2%) reference voltage
Output voltage adjustable from 1.235 V to VIN
Low dropout operation: 100% duty cycle
500 kHz internally fixed frequency
Voltage feed-forward
Zero load current operation
Internal current limiting
Inhibit for zero current consumption
Protection against feedback disconnection
Thermal shutdown

Alternative Descriptions

STMicroelectronics, A5973ADTR | RS
DC/DC CONV, BUCK, HSOP-8 | Farnell
IC REG BUCK ADJ 1.5A 8HSOP | Future Electronics
Conv DC-DC Single Step Down 4V to 36V 8-Pin HSOP EP T/R | Avnet America
Dc-Dc Converters |Stmicroelectronics A5973ADTR | Newark Electronics

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Frequently Asked Questions

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Additional datasheets, footprints and schematics for A5973ADTR are listed on our Part Details page. You can also find images and similar parts to A5973ADTR on this page.

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What category does A5973ADTR fall under?

The A5973ADTR is listed under Power Management > DC-DC Switching Converters > Buck Regulators.

Can I view similar or alternative parts?

You can view similar parts to A5973ADTR when available in the Buck Regulators range under the specifications section at the bottom of the details page.

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Is the A5973ADTR RoHS compliant?

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

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Authorised distributors including RS, Farnell, Future Electronics, Avnet America and Newark Electronics have stock available or on a lead time for A5973ADTR.

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