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  6. L4978D

STMicroelectronics | L4978D

Manufacturer Part #

L4978D

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

ECAD Model:
Mfr. Name: STMicroelectronics
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Product Specification Section
STMicroelectronics L4978D - Technical Attributes
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
Package Style:  SOIC-16
Mounting Method: Through Hole
Features & 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 0.25Ω) 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
Pricing Section
Global Stock:
0
USA:
0
On Order:
0
Factory Stock:Factory Stock:
0
Factory Lead Time:
10 Weeks
Minimum Order:
1225
Multiple Of:
49
Total
$2,229.50
USD
Quantity
Unit Price
1
$1.97
30
$1.93
100
$1.90
300
$1.87
1,000+
$1.82
Product Variant Information section