LM3940IS-3.3/NOPB

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Details for Texas Instruments

LM3940IS-3.3/NOPB

1A Low Dropout Regulator for 5V to 3.3V Conversion
Buy Directly from Texas Instruments (5982 in Stock)
$0.8700 per unit
Series Information for LM3940IS-3.3/NOPB - 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 V REG LINEAR 3.3V
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:
TO-263
No. of Pins:
3Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
125°C
Product Range:
3.3V 1A LDO Voltage Regulators
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 3 - 168 hours
SVHC:
No SVHC (27-Jun-2018)
No. of Outputs:
1Outputs
Operating Temperature Range:
-40°C to +125°C
Output Voltage Nom.:
3.3V
Primary Input Voltage:
5V
Supply Voltage Max:
7.5V
Supply Voltage Min:
4.5V
Termination Type:
Surface Mount Device
Voltage Regulator Type:
LDO Fixed Positive

Alternate Descriptions

Avnet America

LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) TO-263 Rail

Avnet America product

Avnet Europe

LDO Regulator Pos 3.3V 1A 4-Pin(3+Tab) TO-263 Rail

Avnet Europe product

Texas Instruments

1A Low Dropout Regulator for 5V to 3.3V Conversion

Texas Instruments product

Distrelec

1.53

Distrelec product

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