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Details for Texas Instruments


500 mA Low Dropout Regulator
Buy Directly from Texas Instruments (6757 in Stock)
$0.7700 per unit
Series Information for LM2937ESX-3.3/NOPB - Texas Instruments


  • feature
    60-V Input Transient Protection
  • feature
    Fully Specified for Operation Over u221240u00b0C to 125u00b0C
  • feature
    Internal Short Circuit and Thermal Overload Protection
  • feature
    Operating Input Voltage Range : 4.75 V to 26 V
  • feature
    Output Current in Excess of 500 mA (400 mA for SOT-223 package)
  • feature
    Output Trimmed for 5% Tolerance Under All Operating Conditions
  • feature
    Reverse Battery Input Protection
  • feature
    Wide Output Capacitor ESR Range, 0.01 u03a9 up to 5 u03a9


LDO FIXED 3.3V 0.5A TO-263-3
The LM2937-2.5 and LM2937-3.3 are positive voltage regulators capable of supplying up to 500 mA of load current. Both regulators are ideal for converting a common 5-V logic supply, or higher input supply voltage, to the lower 2.5-V and 3.3-V supplies to power very-large-scale integrations (VLSI) ASICs and microcontrollers. Special circuitry has been incorporated to minimize the quiescent current to typically only 10 mA with a full 500-mA load current when the input to output voltage differential is greater than 5 V. The LM2937 requires an output bypass capacitor for stability. As with most regulators utilizing a PNP pass transistor, the ESR of this capacitor remains a critical design parameter, but the LM2937-2.5 and LM29373.3 include special compensation circuitry that relaxes ESR requirements. The LM2937 is stable for all ESR ratings less than 5 Ω. This allows the use of low ESR chip capacitors. The regulators are also suited for automotive applications, with built in protection from reverse battery connections, two-battery jumps and up to +60 V/−50 V load dump transients. Familiar regulator features such as short circuit and thermal shutdown protection are also built in.


Output Type:
Input Voltage Min:
Input Voltage Max:
Fixed Output Voltage Nom.:
Adjustable Output Voltage Min:
Adjustable Output Voltage Max:
Output Current:
Dropout Voltage Vdo:
LDO Regulator Case Style:
No. of Pins:
Operating Temperature Min:
Operating Temperature Max:
Product Range:
3.3V 500mA LDO Voltage Regulators
Automotive Qualification Standard:
RoHS Phthalates Compliant:
MSL 3 - 168 hours
No SVHC (27-Jun-2018)

Alternate Descriptions

Avnet America

LDO Regulator Pos 3.3V 0.5A 4-Pin(3+Tab) TO-263 T/R

Avnet America product

Avnet Europe

LDO Regulator Pos 3.3V 0.5A 4-Pin(3+Tab) TO-263 T/R

Avnet Europe product

Texas Instruments

500 mA Low Dropout Regulator

Texas Instruments product


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