L4978D in Tube by STMicroelectronics | Régulateurs de commutation | Future Electronics
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STMicroelectronics | L4978D

Référence fabricant

L4978D

L4978 Series 55 V 220 uA 300 kHz Buck Through Hole Switching Regulator - SOIC-16

Modèle ECAD:
Nom du fabricant: STMicroelectronics
Emballage standard:
Product Variant Information section
Code de date:
Product Specification Section
STMicroelectronics L4978D - Caractéristiques techniques
Attributes Table
Topology: Buck
Input Voltage: 8V to 55V
Output Current-Max: 2µA
Output Voltage Range: 3.3V to 50V
Output Type: Adjustable
Switching Frequency-Max: 300kHz
Operating Temp Range: -40°C to +150°C
Duty Cycle-Max: 97%
Efficiency: 87%
No. of Outputs: 1
Quiescent Current: 2.5mA
Storage Temperature Range: -40°C to +150°C
Moisture Sensitivity Level: 3
Style d'emballage :  SOIC-16
Méthode de montage : Through Hole
Fonctionnalités et applications

The L4978D is a step down monolithic power switching regulator delivering  2A at a voltage between 3.3 V and 50 V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25O) to obtain very high efficency and high switching speed.

Switching frequency up to 300 KHz is achievable (the maximum power dissipation of the packages must be observed). A wide input voltage range between 8 V to 55 V and output voltages regulated from 3.3 V to 50 V cover the majority of today’s applications.

Features:

  • Up to 2 A Stepdown Converter
  • Operating input voltage from 8 V TO 55 V
  • Precise 3.3 V (±1%) Internal Reference voltage
  • Output voltage adjustable from 3.3 V to 50 V
  • Switching frequency adjustable up to 300 KHz
  • Voltage feedforward
  • Zero load current operation
  • Internal current limiting (Pulsebypulse and hiccup mode)
  • Inhibit for zero current consuption
  • Protection against feedback disconnection
  • Thermal Shutdown
  • Soft start function

View the Complete family of L497 Switching Regulators

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Pricing Section
Stock global :
0
États-Unis:
0
Sur commande :
0
Stock d'usine :Stock d'usine :
-1
Délai d'usine :
10 Semaines
Commande minimale :
1225
Multiples de :
49
Total 
2 658,25 $
USD
Quantité
Prix unitaire
49
$2.25
147
$2.22
245
$2.21
980
$2.17
1 470+
$2.15
Product Variant Information section