LM3940 - 用于 5V 至 3.3V 转换的 1A 低压降稳压器

LM3940是TI德州仪器公司的一款单通道LDO产品，LM3940是用于 5V 至 3.3V 转换的 1A 低压降稳压器，本站介绍了LM3940的封装应用图解、特点和优点、功能等，并给出了与LM3940相关的TI元器件型号供参考。

LM3940 - 用于 5V 至 3.3V 转换的 1A 低压降稳压器 - 单通道LDO - 线性稳压器(LDO) - 德州仪器

产品特性

Input Voltage Range: 4.5 V to 5.5 V
Output Voltage Specified over Temperature
Excellent Load Regulation
Specified 1-A Output Current
Requires only One External Component
Built-in Protection against Excess Temperature
Short-Circuit Protected

产品应用

Laptop and Desktop Computers
Logic Systems

产品说明

The LM3940 is a 1-A low-dropout regulator designed to provide 3.3 V from a 5-V supply.

The LM3940 is ideally suited for systems which contain both 5-V and 3.3-V logic, with prime power provided from a 5-V bus.

Because the LM3940 is a true low dropout regulator, it can hold its 3.3-V output in regulation with input voltages as low as 4.5 V.

The TO-220 package of the LM3940 means that in most applications the full 1 A of load current can be delivered without using an additional heatsink.

The surface mount DDPAK/TO-263 package uses minimum board space, and gives excellent power dissipation capability when soldered to a copper plane on the PC board.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LM3940	SOT-223 (4)	6.50 mm x 3.50 mm
	DDPAK/TO-263 (3)	10.18 mm x 8.41 mm
	TO-220 (3)	14.986 mm x 10.16 mm

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