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MCP1703-3302E

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Microchip Tech Linear Voltage Regulators (LDO), SOT-223-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MCP1703-3302E

Microchip Tech · Linear Voltage Regulators (LDO) · SOT-223-3

MCP1703-3302E from Microchip Tech, in a SOT-223-3. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VIN power_in Unregulated supply input accepting 2.7V to 16.0V, needing low source impedance and about 1 µF of input capacitance for stable operation.
2 GND power_in Regulator ground (the tab is also GND), carrying only the 2.0 µA typical bias current and serving as the output regulation reference.
3 VOUT power_out Regulated output delivering up to 250 mA, connected to the load and an output capacitor of 1.0 µF to 22 µF placed close to the pin.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOT-223-3
Category Power Management ICs
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input Operating Voltage VIN 2.7 16 V Note 1 3
Input Quiescent Current Iq 2 5 µA IL = 0 mA 3
Maximum Output Current IOUT_mA 250 mA For VR ≥ 2.5V 3
Output Voltage Regulation VOUT -2 0.4 2 % VR-2.0% to VR+2.0%, typ VR±0.4%, Note 2 3
Line Regulation ΔVOUT/(VOUTXΔVIN) -0.3 0.1 0.3 %/V (VOUT(MAX) + VDROPOUT(MAX)) ≤ VIN ≤ 16V, Note 1 3
Load Regulation ΔVOUT/VOUT -2.5 1 2.5 % IL = 1.0 mA to 250 mA for VR >= 2.5V, VIN = 3.65V, Note 4 3
Dropout Voltage VDROPOUT 525 725 mV IL = 250 mA, 3.3V ≤ VR < 5.0V 4
Operating Junction Temperature Range TJ -40 125 °C Steady State 4
Maximum Junction Temperature (transient) TJ 150 °C Transient 4
Storage Temperature Range TA -65 150 °C 4
Supply Voltage VDD 18 V 3
Input/Output Pin Voltage -0.3 0.3 V All inputs and outputs w.r.t. (VSS-0.3V) to (VIN+0.3V); max is VIN+0.3V 3
Maximum Junction Temperature 150 °C 3
ESD protection HBM 4 kV All pins, HBM 3
ESD protection MM 400 V All pins, MM 3
Output Short Circuit Current IOUT_SC 400 mA VIN = VIN(MIN) (Note 1), VOUT = GND, Current (average current) measured 10 ms after short is applied. 3
VOUT Temperature Coefficient TCVOUT 50 ppm/°C Note 3 3
Output Delay Time TDELAY 1000 µs VIN = 0V to 6V, VOUT = 90% VR, RL = 50Ω resistive 4
Output Noise eN 8 µV/(Hz)1/2 IL = 50 mA, f = 1 kHz, COUT = 1 µF 4
Power Supply Ripple Rejection Ratio PSRR 44 dB f = 100 Hz, COUT = 1 µF, IL = 100 µA, VINAC = 100 mV pk-pk, CIN = 0 µF, VR = 1.2V 4
Thermal Shutdown Protection TSD 150 °C 4
Thermal Resistance, junction to ambient, 3LD SOT-223 θJA 62 °C/W EIA/JEDEC JESD51-7 FR-4 0.063 4-Layer Board 4
Thermal Resistance, junction to case, 3LD SOT-223 θJC 15 °C/W EIA/JEDEC JESD51-7 FR-4 0.063 4-Layer Board 4

CAD (KiCad official)

  • Symbol: MCP1703-3302E
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223-3 (KiCad packages3D, STEP)
  • 3D model files: mcp1703-3302e-etched.step / mcp1703-3302e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp1703-3302e.step / mcp1703-3302e.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Microchip Tech datasheet (32 pp, sha256 7bfdaa05d529bf00, retrieved 2026-10-24, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF