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A5972D013TR

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

Quantity $ per Unit Savings
1 - 9$4.490%
10 - 24$4.0410%
25 - 99$3.8215%
100 - 249$3.3126%
250$3.1430%
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Parameter NameParameter Value
Input Voltage Min Volt4.0
Input Voltage Max Volt36.0
Operating Temp Min Celsius-40.0
Operating Temp Max Celsius125.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
ROHS Compliance GradeEcopack2
GradeAutomotive
Package NameSO-8

The A5972D 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 VIN.


The device uses an internal P-channel DMOS transistor (with a typical RDS(on)of 250 mΩ) as a 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 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.

Key features
  • 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
  • 250 kHz internally fixed frequency
  • Voltage feedforward
  • Zero load current operation
  • Internal current limiting
  • Inhibit for zero current consumption
  • Protection against feedback disconnection
  • Thermal shutdown