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LM2937IMP-12/NOPB

Linear Voltage Regulator IC Positive Fixed 1 Output 500mA SOT-223-4

Manufacturer: Texas Instruments, Inc
Mfr.Part #: LM2937IMP-12/NOPB
Datasheet: LM2937IMP-12/NOPB Datasheet (PDF)
Package/Case: SOT223
Product Type: Power Management ICs
RoHS:
Lifecycle: Active
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LM2937IMP-12/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

Application

Battery Powered Consumer Products
Handheld Instruments
Automotive

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	Pin Count	4
Package Category	SOT223 (3-Pin)	Released Date	Jul 14, 2017
Last Modified Date	Jun 21, 2023 10:40 PM UTC