A5974AD:Up to 2 A step down switching regulator for automotive applications

The A5974AD is a step-down monolithic power switching regulator with a minimum switch current limit of 2.5 A, it is therefore able to deliver up to 2 A DC current to the load depending on the application conditions. The output voltage can be set from 1.235 V to 35 V. The high current level is also achieved thanks to a HSOP8 package with exposed frame, that allows to reduce the RTHJ-A down to approximately 40 °C/W. The device uses an internal P-channel DMOS transistor (with a typical RDS(on) of 250 mΩ) as 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 only 4 V, it fits automotive applications requiring device operation even in cold crank conditions. 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)
  • 2 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 35 V
  • 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
  • Synchronization
  • Protection against feedback disconnection
  • Thermal shutdown
Product Specifications
DescriptionVersionSize
DS7198: Up to 2 A step-down switching regulator for automotive applications1.01 MB
HW Model & CAD Libraries
DescriptionVersionSize
X597X Pspice model3 MB
Flyers
DescriptionVersionSize
A798x, A597x switching regulators for car power management1.0714 KB
Up to 3 A switching step-down regulators1.0739 KB
Brochures
DescriptionVersionSize
Brochure Power management guide05.20164 MB
Sample & Buy
Part NumberPackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
A5974ADTRPowerSO-8Tape And Reel1.7211000NECEAR99-
A5974ADPowerSO-8Tube1.7211000NECEAR99-
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
A5974ADTRPowerSO-8AutomotiveEcopack2
A5974ADPowerSO-8AutomotiveEcopack2
Up to 2 A step-down switching regulator for automotive applications A5974AD
Up to 1.5 A step-down switching regulator for automotive applications A5973AD
Up to 1.5 A step-down switching regulator for automotive applications A5973AD
Up to 1.5 A step-down switching regulator for automotive applications A5973AD
Very low drop voltage regulators with inhibit KFXX