LM2937 - 500 mA 低压降稳压器

LM2937是TI德州仪器公司的一款单通道LDO产品，LM2937是500 mA 低压降稳压器，本站介绍了LM2937的封装应用图解、特点和优点、功能等，并给出了与LM2937相关的TI元器件型号供参考。

LM2937 - 500 mA 低压降稳压器 - 单通道LDO - 线性稳压器(LDO) - 德州仪器

产品特性

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

产品应用

Automotive
Industrial Control
Point-of-Load regulation

Simplified Schematic

产品说明

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.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LM2937	TO-220 (3)	14.986 mm x 10.66 mm
	SOT (4)	6.50 mm x 3.5 mm
	TO-263 (3)	10.18 mm x 8.41 mm

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