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STMicroelectronics | L4973D5.1-013TR

Manufacturer Part #

L4973D5.1-013TR

L4973 Series 55 V 3.5 A 300 KHz SMT Step Down Switching Regulator - SOIC-20

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Mfr. Name: STMicroelectronics
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Product Specification Section
STMicroelectronics L4973D5.1-013TR - Technical Attributes
Attributes Table
Topology: Buck
Input Voltage: 8V to 55V
Output Current-Max: 3.5A
Switching Frequency-Max: 300kHz
Package Style:  SOIC-20
Mounting Method: Surface Mount
Features & Applications
The L4973D5.1-013TR is a step down monolithic power switching regulator delivering 3.5 A at fixed voltages of 3.3 V or 5.1 V and using a simple external divider output adjustable voltage up to 50V. Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical RDS(on) of 0.15 Ω) to obtain very high efficiency and very fast switching times.

A wide input voltage range between 8 V to 55 V and output voltages regulated from 3.3 V to 40 V cover the majority of the today applications. Features of this new generation of DC-DC converter includes pulse by pulse current limit, hiccup mode for output short circuit protection, voltage feed forward regulation, soft-start, input/output synchronization, protection against feedback loop disconnection, inhibit for zero current consumption and thermal shutdown

Features:

  • Up to 3.5 A step down converter
  • Operating input voltage from 8 V to 55 V
  • 3.3 V and 5.1 V (±1%) fixed output, and adjustable outputs from:
    • 0.5 V to 50 V (3.3 type)
    • 5.1 V to 50 V (5.1 type)
  • Frequency adjustable up to 300 kHz
  • Voltage feed forward
  • Zero load current operation (min. 1 mA)
  • Internal current limiting (pulse by pulse and HICCUP mode)
  • Precise 5.1 V (1.5%) reference voltage externally available
  • Input/output synchronization function
  • Inhibit for zero current consumption (100 mA typ. at VCC = 24 V)
  • Protection against feedback disconnection
  • Thermal shutdown
  • Output over voltage protection
  • Soft-start function?????
Pricing Section
Global Stock:
0
USA:
0
On Order:
0
Factory Stock:Factory Stock:
0
Factory Lead Time:
20 Weeks
Minimum Order:
1000
Multiple Of:
1000
Total
$2,840.00
USD
Quantity
Unit Price
1,000+
$2.84
Product Variant Information section
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