LDO - LM317, LM1086, LM3940, LM1117, HT73xx-1, MCP1700

This is a quick overview of some of the frequently seen LDOs.

LM317

Datasheet: http://www.ti.com/lit/ds/symlink/lm317.pdf.

Output Current: > 1.5A.

Important Notice

7.4.2 Operation With Low Input Voltage
The device requires up to 3V headroom (VI – VO) to operate in regulation. The device may drop out and OUTPUT voltage will be INPUT voltage minus drop out voltage with less headroom.

LM1086

Datasheet: http://www.ti.com/lit/ds/symlink/lm1086.pdf

Output Current: 1.5A.

LM3940

Datasheet: http://www.ti.com/lit/ds/symlink/lm3940.pdf

Output Current: 1A.

LM1117

Datasheet: http://www.ti.com/lit/ds/symlink/lm1117.pdf

Output Current: 800mA.

More info. about the Cin and Cout capacitor can be found at the link below.
https://electronics.stackexchange.com/questions/200565/capacitors-for-ams1117-for-5v-to-3-3v-regulation

Quiescent Current: 5 ~ 15mA.

AMS1117

Datasheet: http://www.advanced-monolithic.com/pdf/ds1117.pdf

Quiescent Current: 5 ~ 11mA.

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LDO for Battery Power Applications

The LDOs below are ideal for battery power applications because of their low quiescent current.

HT73xx-1

Datasheet: http://www.holtek.com.tw/documents/10179/11842/HT73xx-1v100.pdf

Output Current: 250mA.

Quiescent Current: 2.5 ~ 4.0 uA.

MCP1700

Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/20001826D.pdf

Reference:
https://electronics.stackexchange.com/questions/286249/replace-ams1117-5v-3-3v-ldo-on-nodemcu-for-lipo-with-low-quiescent-current/286255?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa