5V to 3.3V Regulator Datasheet
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I've prepared the following schematic updates:
Table
| Item | Part/Component | Connection/Note |
|---|---|---|
| Input Connector | 2-Pin Header (J1) | One pin provides 5V; the other provides GND |
| Input Indicator LED | Green LED (LED1) | Connect from 5V (J1) through series resistor [R1] to GND to indicate 5V presence |
| Input Series Resistor | 330Ω Resistor (R1) | In series with LED1 (suggested value: 330Ω; adjust as needed) |
| Voltage Regulator | MCP1700-3302E/TO (U1) | IN pin connected to 5V (J1); GND to common ground; OUT supplies regulated 3.3V with inherent ~200mA current limiting |
| Input Decoupling Capacitor | C1 (~10µF recommended) | Connect between U1 IN and GND to stabilize the 5V input |
| Output Decoupling Capacitor | C2 (~10µF recommended) | Place between U1 OUT and GND as per the regulator's datasheet |
| Output Indicator LED | Green LED (LED2) | Connect from 3.3V (U1 OUT) through series resistor [R2] to GND to indicate the regulated output |
| Output Series Resistor | 330Ω Resistor (R2) | Series resistor for LED2 (suggested value: 330Ω) |
| Output Connector | 2-Pin Header (J2) | One pin connected to 3.3V (U1 OUT) and the other to GND to deliver the regulated output |
Wiring Summary:
-
Input Section:
- J1 provides 5V and ground.
- 5V is also routed through [R1] and [LED1] to ground for a 5V presence indication.
- The 5V input is decoupled by [C1] before entering U1 IN.
-
Regulator Section:
- [MCP1700-3302E/TO (U1)] receives 5V and provides a steady 3.3V with inherent current limiting around 200mA.
- A decoupling capacitor, [C2], is placed between U1 OUT and ground.
-
Output Section:
- The regulated 3.3V drives [LED2] via [R2] for an output indicator.
- The final output is delivered via J2 with connections for 3.3V and ground.
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C1
Capacitance
10uF
LED2
J1
LED1
C2
Capacitance
10uF
J2
U1
R2
Resistance
330 Ω
R1
Resistance
330 Ω
Reviews
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