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LM2937IMP-5.0/NOPB +BOM

LM2937IMP-5.0/NOPB LDO Regulator

Manufacturer:

Texas Instruments
Mfr.Part #:

LM2937IMP-5.0/NOPB
Datasheet:

LM2937IMP-5.0/NOPB Datasheet (PDF)
Output options:

Fixed Output
Iout (max) (A):

0.5
Vin (max) (V):

26
Vin (min) (V):

6
EDA/CAD Models:

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LM2937IMP-5.0/NOPB General Description

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 60-V/−50-V load dump transients. Familiar regulator features such as short circuit and thermal shutdown protection are also built in.

Key Features

Fully Specified for Operation Over −40°C
to 125°C
Output Current in Excess of 500 mA
Output Trimmed for 5% Tolerance Under all Operating
Conditions
Typical Dropout Voltage of 0.5 V at Full Rated Load
Current
Wide Output Capacitor ESR Range, up to 3 Ω
Internal Short Circuit and Thermal Overload Protection
Reverse Battery Protection
60-V Input Transient Protection
Mirror Image Insertion Protection

Specifications

Output options	Fixed Output	Iout (max) (A)	0.5
Vin (max) (V)	26	Vin (min) (V)	6
Vout (max) (V)	15	Vout (min) (V)	5
Fixed output options (V)	2.5, 3.3, 5, 8, 10, 12, 15	Noise (µVrms)	150
Iq (typ) (mA)	2	Thermal resistance θJA (°C/W)	42
Rating	Catalog	Load capacitance (min) (µF)	10
Regulated outputs (#)	1	Accuracy (%)	5
PSRR at 100 KHz (dB)	57	Dropout voltage (Vdo) (typ) (mV)	500
Operating temperature range (°C)	-40 to 125, -40 to 85