LF50CV-DG
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STMicroelectronics LF50CV-DG

Manufacturer No:
LF50CV-DG
Manufacturer:
STMicroelectronics
Package:
Tube
Description:
IC REG LINEAR 5V 500MA TO220
Delivery:
Payment:
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Product Introduction

Overview

The LF50CV-DG, produced by STMicroelectronics, is a very low-dropout voltage regulator designed for high-performance applications. This regulator is part of the LF50 series, known for its low quiescent current and high output current capability. It is suitable for a wide range of applications, including automotive, industrial, and consumer electronics, where stable and efficient voltage regulation is crucial.

Key Specifications

Parameter Test Condition Min. Typ. Max. Unit
Output Voltage (VO) IO = 50 mA, VI = 7 V 4.9 5 5.1 V
Operating Input Voltage (VI) IO = 500 mA 2.5 - 16 V
Output Current Limit (IO) - - - 1 A A
Line Regulation (∆VO) VI = 6 to 16 V, IO = 5 mA 5 - 25 mV mV
Load Regulation (∆VO) VI = 6.3 V, IO = 5 to 500 mA 5 - 25 mV mV
Quiescent Current (Id) VI = 6 to 16 V, IO = 0 mA, ON mode 0.5 1 2 mA mA
Quiescent Current (Id) VI = 6 V, OFF mode 50 - 100 µA µA
Dropout Voltage (Vd) IO = 200 mA 0.2 - 0.35 V V
Control Input Logic Low (VIL) Ta = -40 to 125 °C 0.8 - - V
Control Input Logic High (VIH) Ta = -40 to 125 °C - - 2 V V
Output Bypass Capacitance (CO) ESR = 0.1 to 10 Ω, IO = 0 to 500 mA 2 - 10 µF µF

Key Features

  • Very Low Dropout Voltage: The LF50CV-DG features a very low dropout voltage, typically 0.2 to 0.35 V at 200 mA and 0.4 to 0.7 V at 500 mA, ensuring minimal voltage loss.
  • Low Quiescent Current: It has a low quiescent current of 0.5 to 1 mA in ON mode and 50 to 100 µA in OFF mode, making it power-efficient.
  • High Output Current Capability: The regulator can supply up to 500 mA of output current.
  • Wide Operating Input Voltage Range: It operates over a wide input voltage range of 2.5 to 16 V.
  • Good Line and Load Regulation: The device exhibits good line and load regulation, ensuring stable output voltage across various operating conditions.
  • Low Output Noise Voltage: The output noise voltage is typically 50 µV over a bandwidth of 10 Hz to 100 kHz.
  • High Supply Voltage Rejection Ratio (SVR): It has a high SVR, typically 76 dB at 120 Hz, ensuring good noise rejection.

Applications

  • Automotive Systems: The LF50CV-DG is suitable for automotive applications due to its robust performance over a wide temperature range and compliance with automotive standards.
  • Industrial Control Systems: It is used in industrial control systems where reliable and stable voltage regulation is essential.
  • Consumer Electronics: The regulator is also used in various consumer electronics such as audio equipment, medical devices, and other portable electronics.
  • Power Supplies and DC-DC Converters: It can be integrated into power supplies and DC-DC converters to provide stable output voltages.

Q & A

  1. What is the typical dropout voltage of the LF50CV-DG?

    The typical dropout voltage is 0.2 to 0.35 V at 200 mA and 0.4 to 0.7 V at 500 mA.

  2. What is the maximum output current of the LF50CV-DG?

    The maximum output current is 500 mA.

  3. What is the operating input voltage range of the LF50CV-DG?

    The operating input voltage range is 2.5 to 16 V.

  4. What is the quiescent current in ON and OFF modes?

    In ON mode, the quiescent current is typically 0.5 to 1 mA. In OFF mode, it is typically 50 to 100 µA.

  5. What is the line regulation of the LF50CV-DG?

    The line regulation is typically 5 to 25 mV over the input voltage range of 6 to 16 V.

  6. What is the load regulation of the LF50CV-DG?

    The load regulation is typically 5 to 25 mV over the output current range of 5 to 500 mA.

  7. What is the output noise voltage of the LF50CV-DG?

    The output noise voltage is typically 50 µV over a bandwidth of 10 Hz to 100 kHz.

  8. What is the supply voltage rejection ratio (SVR) of the LF50CV-DG?

    The SVR is typically 76 dB at 120 Hz.

  9. What are the typical control input logic levels for the LF50CV-DG?

    The control input logic low is typically 0.8 V, and the control input logic high is typically 2 V.

  10. What is the recommended output bypass capacitance for the LF50CV-DG?

    The recommended output bypass capacitance is 2 to 10 µF with an ESR of 0.1 to 10 Ω.

Product Attributes

Output Configuration:Positive
Output Type:Fixed
Number of Regulators:1
Voltage - Input (Max):16V
Voltage - Output (Min/Fixed):5V
Voltage - Output (Max):- 
Voltage Dropout (Max):0.7V @ 500mA
Current - Output:500mA
Current - Quiescent (Iq):1 mA
Current - Supply (Max):12 mA
PSRR:76dB ~ 60dB (120Hz ~ 10kHz)
Control Features:- 
Protection Features:Over Current, Over Temperature
Operating Temperature:-40°C ~ 125°C
Mounting Type:Through Hole
Package / Case:TO-220-3
Supplier Device Package:TO-220
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