5V low dropout regulator circuit using transistor and LED

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STD 5V low dropout regulator circuit using transistor and LED

License: GPL 3.0

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Update time： 2021-04-09 23:02:01

Creation time： 2017-12-13 13:29:46

Description

This is 5V low dropout regulator circuit using a transistor and LED only so easy, lowest voltage input is 6V so across it is 1V only, make output is 5V 0.5A. I have a 6V battery, but it needs to be applied to digital circuits that used to 5 volts regulated. Read more : [**5V low dropout regulator circuit using the transistor and LED**](https://www.eleccircuit.com/low-dropout-voltage-regulators-circuits/)

Design Drawing

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5v-low-drop-out-regulator-low-volt
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	BC547	Q2	TO-92(TO-92-3)	1
2	BC557	Q1,Q3	TO-92(TO-92-3)	2
3	BD438	Q4	TO-92(TO-92-3)	1
4	1K	R1	AXIAL-0.3	1
5	10K	R2	AXIAL-0.3	1
6	470ohm	R3	AXIAL-0.3	1
7	1.2K	R4	AXIAL-0.3	1
8	560ohm	R5	AXIAL-0.3	1
9	500ohm	VR1	RES-ADJ_3386P	1
10	204-10UYC/S530-A3	LED1	LED-3MM/2.54	1
11	1.2ohm	R6	AXIAL-0.3	1
12	10uF/10V	C1	CAP-TAN-S2.5	1
13	Header-Male-2.54_1x1	6V,5V,P1,GND	HDR-1X1/2.54	4