B5973D:Up to 2 A step down switching regulator for automotive applications

The B5973D is a step down monolithic power switching regulator with a minimum switch current limit of 2.25 A so it is 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 an HSOP8 package (i.e. SO8 package with 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 RDSonof 250 mΩ) as 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 is particularly suitable for 5 V bus. 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 (temperature Grade 1), 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
  • 250 kHz internally fixed frequency
  • Voltage feedforward
  • Zero load current operation
  • Internal current limiting
  • Inhibit for zero current consumption
  • Synchronization
  • Protection against feedback disconnection
  • Thermal shutdown
Product Specifications
DescriptionVersionSize
DS5575: 2 A step down switching regulator for automotive applications4.01 MB
HW Model & CAD Libraries
DescriptionVersionSize
X597X Pspice model3 MB
Flyers
DescriptionVersionSize
A798x, A597x switching regulators for car power management1.0714 KB
Brochures
DescriptionVersionSize
Brochure Power management guide05.20164 MB
Sample & Buy
Part NumberPackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
B5973DTRPowerSO-8Tape And Reel1.8751000NECEAR99MALAYSIA
B5973DPowerSO-8Tube1.8751000NECEAR99MALAYSIA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
B5973DTRPowerSO-8AutomotiveEcopack2md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_br61-wspc-ud73eea_vers2_signed.pdf
md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_br61-wspc-ud73eea.xml
B5973DPowerSO-8AutomotiveEcopack2md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_br61-wspc-ud73eea_vers2_signed.pdf
md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_br61-wspc-ud73eea.xml
2 A step down switching regulator for automotive applications B5973D
circuit_diagram_14117_thumbnail.png B5973D
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_br61-wspc-ud73eea_vers2_signed.pdf B5973D
md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_br61-wspc-ud73eea.xml B5973D