A5973AD:Up to 1.5 A step down switching regulator for automotive applications

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 VIN. The high current level is also achieved thanks to an HSOP8 package with an exposed frame, that allows to reduce the Rth(JA)down to approximately 40 °C/W. 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 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.

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
  • 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
DS5502: Up to 1.5 A step-down switching regulator for automotive applications9.01 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
A5973ADPowerSO-8Tube1.4251000NECEAR99CHINA
A5973ADTRPowerSO-8Tape And Reel1.4251000NECEAR99CHINA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
A5973ADPowerSO-8AutomotiveEcopack2md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_s561ut20eea.pdf
md_61-wspc-hsop-wspc-8l-wspc-.xml
A5973ADTRPowerSO-8AutomotiveEcopack2md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_s561ut20eea.pdf
md_61-wspc-hsop-wspc-8l-wspc-.xml
Up to 1.5 A step-down switching regulator for automotive applications A5973AD
circuit_diagram_13958_thumbnail.png 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
Up to 1.5 A step-down switching regulator for automotive applications A5973AD
Very low drop voltage regulators with inhibit KFXX
md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_s561ut20eea.pdf A5973AD
md_61-wspc-hsop-wspc-8l-wspc-.xml A5973AD