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IC reference design search

STMicroelectronics A7986A

3 A step-down switching regulato r for automotive applications

Overview

TopologyWireless Power Transfer
Switching frequency250-1000 kHz
IC revision8

Description

The A7986A is a step-down switching regulatorwith a 3.7 A (min.) current limited embeddedpower MOSFET, so it is able to deliver up to 3 Acurrent to the load depending on the applicationconditions.The input voltage can range from 4.5 V to 38 V,while the output voltage can be set starting from0.6 V to VIN.Requiring a minimum set of external components,the device includes an internal 250 kHz switchingfrequency oscillator that can be externallyadjusted up to 1 MHz.The HSOP8 package with exposed pad allowsthe reduction of Rth(JA) down to 40 °C/W.

Features

AEC-Q100 qualified

  • 3 A DC output current
  • 4.5 V to 38 V input voltage
  • Output voltage adjustable from 0.6 V
  • 250 kHz switching frequency, programmableup to 1 MHz
  • Internal soft-start and enable
  • Low dropout operation: 100% duty cycle
  • Voltage feed-forward
  • Zero load current operation
  • Overcurrent and thermal protection
  • HSOP8 package

Products

Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
SizeVersion Samples
744778002
IGS STP ALT EAG CAD LTS PSP SPE CADWE-PD SMT Power Inductor 2.2 4.02 4.8 14 20 67 7332 Standard
744777002
IGS STP ALT EAG CAD LTS PSP SPE CADWE-PD SMT Power Inductor 2.2 6 6.5 13 20 60 7345 Standard
7447789002
IGS STP ALT EAG CAD LTS PSP SPE CADWE-PD SMT Power Inductor 2.2 4.02 4.8 19 23 67 7332 Robust
7447779002
IGS STP ALT EAG CAD LTS PSP SPE CADWE-PD SMT Power Inductor 2.2 4.2 6 16 20 60 7345 Robust
744778003
IGS STP ALT EAG CAD LTS PSP SPE CADWE-PD SMT Power Inductor 3.3 3.1 4.1 24 32 61 7332 Standard
744777003
IGS STP ALT EAG CAD LTS PSP SPE CADWE-PD SMT Power Inductor 3.3 3.5 4.6 25 30 55 7345 Standard
7447789003
IGS STP ALT EAG CAD LTS PSP SPE CADWE-PD SMT Power Inductor 3.3 3.42 4.2 24 30 61 7332 Robust
7447779003
IGS STP ALT EAG CAD LTS PSP SPE CADWE-PD SMT Power Inductor 3.3 3.3 4.5 26 30 55 7345 Robust
7447713082
IGS STP ALT EAG CAD LTS PSP SPE CADWE-PD SMT Power Inductor 8.2 3 4.7 41 49 30 1030 Performance
7447713100
IGS STP ALT EAG CAD LTS PSP SPE CADWE-PD SMT Power Inductor 10 2.6 4.1 52 62 25 1030 Performance
7447714100
IGS STP ALT EAG CAD LTS PSP SPE CADWE-PD SMT Power Inductor 10 4.3 5 23 27 20.5 1050 Performance
7447713150
IGS STP ALT EAG CAD LTS PSP SPE CADWE-PD SMT Power Inductor 15 2.2 3.4 74 89 19.5 1030 Performance
7447714150
IGS STP ALT EAG CAD LTS PSP SPE CADWE-PD SMT Power Inductor 15 3.5 4.1 36 43 16.8 1050 Performance
Samples
Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
SizeVersion Samples