L5972D
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STMicroelectronics L5972D

Manufacturer No:
L5972D
Manufacturer:
STMicroelectronics
Package:
Tube
Description:
IC REG BUCK ADJUSTABLE 2A 8SO
Delivery:
Payment:
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Product Introduction

Overview

The L5972D is a step-down monolithic power switching regulator produced by STMicroelectronics. It is designed to deliver more than 1.5A DC current to the load, with a minimum switch current limit of 2A. The output voltage can be adjusted from 1.235V to 35V, making it versatile for various applications. The device features an internal P-Channel D-MOS transistor with a typical Rdson of 250mΩ, which helps minimize the size of external components. It operates with an internally fixed switching frequency of 250kHz and is particularly suitable for 5V bus applications, common in computer-related systems.

Key Specifications

Parameter Value Unit
Output Current 2A A
Output Voltage Range 1.235V to 35V V
Input Voltage Range 4.4V to 36V V
Switching Frequency 250kHz kHz
Mosfet On Resistance (Rdson) 0.250 Ω (typical) Ω
Operating Temperature Range -25°C to 125°C °C
Package Type SO-8 -
Mounting Type SMD -

Key Features

  • 2A internal switch
  • Output voltage adjustable from 1.235V to 35V
  • Operating input voltage from 4.4V to 36V
  • Internally fixed switching frequency of 250kHz
  • Low dropout operation: 100% duty cycle
  • Voltage feedforward
  • Zero load current operation
  • Internal current limiting
  • Protection against feedback disconnection
  • Thermal shutdown

Applications

  • Consumer electronics: STB, DVD, TV, VCR, car radio, LCD monitors
  • Networking: XDSL, modems, DC-DC modules
  • Computer systems: printers, audio/graphic cards, optical storage, hard disk drive
  • Industrial applications: battery chargers, DC-DC converters

Q & A

  1. What is the maximum output current of the L5972D?

    The L5972D can deliver up to 2A of output current.

  2. What is the adjustable output voltage range of the L5972D?

    The output voltage can be adjusted from 1.235V to 35V.

  3. What is the input voltage range for the L5972D?

    The input voltage range is from 4.4V to 36V.

  4. What is the switching frequency of the L5972D?

    The switching frequency is internally fixed at 250kHz.

  5. What type of transistor is used as the switching element in the L5972D?

    An internal P-Channel D-MOS transistor is used.

  6. What are the key protection features of the L5972D?

    The device features thermal shutdown, protection against feedback disconnection, and internal current limiting.

  7. What is the typical on-resistance (Rdson) of the Mosfet in the L5972D?

    The typical Rdson is 250mΩ.

  8. What is the operating temperature range of the L5972D?

    The operating temperature range is from -25°C to 125°C.

  9. In what package is the L5972D available?

    The L5972D is available in an SO-8 package.

  10. What are some common applications for the L5972D?

    Common applications include consumer electronics, networking devices, computer systems, and industrial applications.

Product Attributes

Function:Step-Down
Output Configuration:Positive
Topology:Buck
Output Type:Adjustable
Number of Outputs:1
Voltage - Input (Min):4.4V
Voltage - Input (Max):36V
Voltage - Output (Min/Fixed):1.235V
Voltage - Output (Max):35V
Current - Output:2A
Frequency - Switching:250kHz
Synchronous Rectifier:No
Operating Temperature:-40°C ~ 150°C (TJ)
Mounting Type:Surface Mount
Package / Case:8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:8-SOIC
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In Stock

$3.03
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Similar Products

Part Number L5972D L5973D L5970D L5971D
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Product Status Active Active Active Obsolete
Function Step-Down Step-Down Step-Down Step-Down
Output Configuration Positive Positive Positive Positive
Topology Buck Buck Buck Buck
Output Type Adjustable Adjustable Adjustable Adjustable
Number of Outputs 1 1 1 1
Voltage - Input (Min) 4.4V 4V 4.4V 6.5V
Voltage - Input (Max) 36V 36V 36V 28V
Voltage - Output (Min/Fixed) 1.235V 1.235V 1.2V 1.26V
Voltage - Output (Max) 35V 35V 35V 20V
Current - Output 2A 2.5A 1A 1.5A
Frequency - Switching 250kHz 250kHz 250kHz 100kHz ~ 300kHz
Synchronous Rectifier No No No No
Operating Temperature -40°C ~ 150°C (TJ) -40°C ~ 150°C (TJ) -40°C ~ 150°C (TJ) -40°C ~ 150°C (TJ)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) Exposed Pad 8-SOIC (0.154", 3.90mm Width) 16-SOIC (0.295", 7.50mm Width)
Supplier Device Package 8-SOIC 8-HSOP 8-SOIC 16-SO W

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