5V to 3.3V Regulator Datasheet

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I've prepared the following schematic updates:

Table

ItemPart/ComponentConnection/Note
Input Connector2-Pin Header (J1)One pin provides 5V; the other provides GND
Input Indicator LEDGreen LED (LED1)Connect from 5V (J1) through series resistor [R1] to GND to indicate 5V presence
Input Series Resistor330Ω Resistor (R1)In series with LED1 (suggested value: 330Ω; adjust as needed)
Voltage RegulatorMCP1700-3302E/TO (U1)IN pin connected to 5V (J1); GND to common ground; OUT supplies regulated 3.3V with inherent ~200mA current limiting
Input Decoupling CapacitorC1 (~10µF recommended)Connect between U1 IN and GND to stabilize the 5V input
Output Decoupling CapacitorC2 (~10µF recommended)Place between U1 OUT and GND as per the regulator's datasheet
Output Indicator LEDGreen LED (LED2)Connect from 3.3V (U1 OUT) through series resistor [R2] to GND to indicate the regulated output
Output Series Resistor330Ω Resistor (R2)Series resistor for LED2 (suggested value: 330Ω)
Output Connector2-Pin Header (J2)One pin connected to 3.3V (U1 OUT) and the other to GND to deliver the regulated output
Wiring Summary:
  1. 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.
  2. 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.
  3. 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
C2
Capacitance
10uF
U1
R2
Resistance
330 Ω
R1
Resistance
330 Ω
LED2
J1
LED1
J2
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