IC-Hersteller STMicroelectronics

IC-Hersteller (95)

STMicroelectronics B5973D

Up to 2 A step down switching regulator for automotive applications

Details

TopologieAbwärtswandler
Eingangsspannung4-36 V
Ausgang 135 V / 2 A
IC-Revision4

Beschreibung

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.

Eigenschaften

  • 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 shutdownREMARKS:-Refer page no 25Table 8.Inductor selection

Typische Anwendungen

  • Dedicated to automotive applications

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
RDC max.
(Ω)
fres
(MHz)
Montageart Muster
74456115SPEC
8 Dateien WE-PD4 SMT-Speicherdrossel 15 2.9 3.6 0.06 17 SMT
74456122SPEC
8 Dateien WE-PD4 SMT-Speicherdrossel 22 2.6 3.1 0.095 14 SMT
74456133SPEC
8 Dateien WE-PD4 SMT-Speicherdrossel 33 2.3 2.6 0.12 13 SMT
Artikel Nr. Daten­blatt
74456115SPEC
74456122SPEC
74456133SPEC
Muster
Artikel Nr. Daten­blatt Downloads ProduktserieL
(µH)
IR
(A)
ISAT
(A)
RDC max.
(Ω)
fres
(MHz)
Montageart Muster