LM3940IMP-3.3

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> Power Management ICs - PMIC

> Voltage Regulators

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Series Information for LM3940IMP-3.3 - Texas Instruments

Features

  • feature
    Built-in Protection against Excess Temperature
  • feature
    Excellent Load Regulation
  • feature
    Input Voltage Range: 4.5 V to 5.5 V
  • feature
    Output Voltage Specified over Temperature
  • feature
    Requires only One External Component
  • feature
    Short-Circuit Protected
  • feature
    Specified 1-A Output Current

Description

IC LDO REG 1A 5V SOT223-4
The LM3940 is a 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply. The LM3940 is ideally suited for systems which contain both 5-V and 3.3-V logic, with prime power provided from a 5-V bus. Because the LM3940 is a true low dropout regulator, it can hold its 3.3-V output in regulation with input voltages as low as 4.5 V. The TO-220 package of the LM3940 means that in most applications the full 1 A of load current can be delivered without using an additional heatsink. The surface mount DDPAK/TO-263 package uses minimum board space, and gives excellent power dissipation capability when soldered to a copper plane on the PC board.

Specifications

Output Type:
Fixed
Input Voltage Min:
0V
Input Voltage Max:
7.5V
Fixed Output Voltage Nom.:
3.3V
Adjustable Output Voltage Min:
-
Adjustable Output Voltage Max:
-
Output Current:
1A
Dropout Voltage Vdo:
500mV
LDO Regulator Case Style:
SOT-223
No. of Pins:
4Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
125°C
Product Range:
3.3V 1A LDO Voltage Regulators
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (27-Jun-2018)
Output Voltage Nom.:
3.3V

Alternate Descriptions

Avnet America

LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) SOT-223 T/R

Avnet America product

Avnet Europe

LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) SOT-223 T/R

Avnet Europe product