STMicroelectronics

A5972D

Up to 1.5 A step down switching regulator for automotive applications

Topologie: Buck
Eingangsspannung (min.): 4.00 V
Eingangsspannung (max.): 36.00 V

Beschreibung

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.

Merkmale

  •  Qualified following the AEC-Q100requirements (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 feed-forward Zero load current operation Internal current limiting Inhibit for zero current consumption Protection against feedback disconnection Thermal shutdownREMARKS:-Inductor selection

Artikel

  Artikel Nr. SPEC Produktserie L1
(µH)
IR 1
(A)
ISAT 1
(A)
RDC1 typ
(Ω)
RDC1 max.
(Ω)
fres 1
(MHz)
Montageart Muster
74456115 PDF WE-PD4 SMT-Speicherdrossel 15 2.9 3.6 0.043 0.06 17 SMT