LM2937ET-12

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Series Information for LM2937ET-12 - Texas Instruments

Features

  • feature
    60-V Input Transient Protection
  • feature
    Fully Specified for Operation Over u221240u00b0C to 125u00b0C
  • feature
    Internal Short Circuit and Thermal Overload Protection
  • feature
    Mirror Image Insertion Protection
  • feature
    Output Current in Excess of 500 mA
  • feature
    Output Trimmed for 5% Tolerance Under all Operating Conditions
  • feature
    Reverse Battery Protection
  • feature
    Typical Dropout Voltage of 0.5 V at Full Rated Load Current
  • feature
    Wide Output Capacitor ESR Range, up to 3 u03a9

Description

IC V REG LDO +12V 2937 TO-220-3
The LM2937 is a positive voltage regulator capable of supplying up to 500 mA of load current. The use of a PNP power transistor provides a low dropout voltage characteristic. With a load current of 500 mA the minimum input to output voltage differential required for the output to remain in regulation is typically 0.5 V (1-V ensured maximum over the full operating temperature range). 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 3 V. The LM2937 requires an output bypass capacitor for stability. As with most low dropout regulators, the ESR of this capacitor remains a critical design parameter, but the LM2937 includes special compensation circuitry that relaxes ESR requirements. The device is stable for all ESR below 3 Ω. This allows the use of low ESR chip capacitors. Ideally suited for automotive applications, the LM2937 will protect itself and any load circuitry from reverse battery connections, two-battery jumps, and up to 60V/−50-V load dump transients. Familiar regulator features such as short circuit and thermal shutdown protection are also built in.

Specifications

Output Type:
Fixed
Input Voltage Min:
0V
Input Voltage Max:
26V
Fixed Output Voltage Nom.:
12V
Adjustable Output Voltage Min:
-
Adjustable Output Voltage Max:
-
Output Current:
500mA
Dropout Voltage Vdo:
500mV
LDO Regulator Case Style:
TO-220
No. of Pins:
3Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
125°C
Product Range:
12V 500mA LDO Voltage Regulators
Automotive Qualification Standard:
-
MSL:
-
SVHC:
No SVHC (27-Jun-2018)
Accuracy %:
5%
Base Number:
2937
IC Generic Number:
2937
No. of Outputs:
1Outputs
Operating Temperature Range:
-40°C to +125°C
Operating Voltage Tolerance +:
5%
Output Current Max:
0.5A
Output Voltage Nom.:
12V
Primary Input Voltage:
17V
Supply Voltage Max:
26V
Supply Voltage Min:
14V
Voltage Regulator Type:
Positive Fixed LDO