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REF345SOT233

Public Made by Adom

by adom

analogysemi Voltage Reference, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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REF345SOT233

analogysemi · Voltage Reference · SOT-23-3

REF345SOT233 from analogysemi, in a SOT-23-3. 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 IN power_in Supply input voltage; the datasheet recommends VIN from VOUT + 0.02 V (4.52 V for REF345) up to 5.5 V maximum, with a 1 µF bypass capacitor.
2 OUT output Analog reference voltage output of 4.5 V for REF345, rated for ±25 mA sourcing and sinking, with 0.1 µF to 10 µF recommended load capacitance.
3 GND power_in Ground reference pin for the device.

Key specifications

Parameter Value
Manufacturer analogysemi
Package SOT-23-3
Category Power Management (PMIC)
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
Initial Accuracy -0.1 0.05 0.1 % 6
Line Regulation -400 60 400 µV/V VOUT + 0.05V ≤ VIN ≤ 5.5V 6
Line Regulation -550 550 µV/V −40°C ≤ TA ≤ 125°C, VOUT + 0.05V ≤ VIN ≤ 5.5V 6
Output Voltage Temperature Drift dVOUT/dT 5 20 ppm/°C −40°C ≤ TA ≤ 125°C 6
Load Regulation, sourcing dVOUT/dLOAD -30 -2 30 ppm/mA Sourcing, 0mA < ILOAD < 25mA, VIN = VOUT + 250mV 6
Load Regulation, sourcing over temperature dVOUT/dLOAD -30 30 ppm/mA −40°C ≤ TA ≤ 125°C, sourcing, 0mA < ILOAD < 10mA, VIN = VOUT + 250mV 6
Load Regulation, sinking dVOUT/dLOAD -100 -57 100 ppm/mA Sinking, −10mA < ILOAD < 0mA, VIN = VOUT + 100mV 6
Load Regulation, sinking over temperature dVOUT/dLOAD -150 150 ppm/mA −40°C ≤ TA ≤ 125°C, sinking, −10mA < ILOAD < 0mA, VIN = VOUT + 100mV 6
Thermal Hysteresis, first cycle dT -300 300 ppm 6
Thermal Hysteresis, additional cycles dT -60 60 ppm 6
Dropout Voltage 2 11 mV ILOAD = 50µA, output > 2.048V 6
Output Current ILOAD -25 25 mA output > 2.048V, VIN = VOUT + 250mV 6
Voltage VIN 5.5 V IL = 0 7
Current IQ 60 80 µA IL = 0 7
Input Supply Voltage (recommended) VIN 5.5 V 4
Output Current Range IOUT -25 25 mA 4
Operating Temperature (recommended) TA -55 135 °C 4
Input Voltage (absolute maximum) 6.5 V 3
Output Voltage (absolute maximum) 5 V 3
Operating Temperature (absolute maximum) TA -55 150 °C 3
Junction Temperature (absolute maximum) TJ 150 °C 3
Storage Temperature (absolute maximum) Tstg -65 150 °C 3
Specified Temperature Range -40 125 °C 7
Ripple Rejection Ratio -53 dB 100mV, 1kHz 6
Output Voltage VOUT 4.5 V 6
Output Voltage Noise 50 µVPP f = 0.1Hz to 10Hz 6
Voltage Noise 48 µVRMS f = 10Hz to 10kHz 6
Noise Density 680 nV/√Hz 1kHz 6
Solder Heat Resistance Shift 0.015 % 6
Long-Term Stability 80 ppm 0h to 100h 6
Long-Term Stability 130 ppm 0h to 1000h 6
Dropout Voltage 100 mV ILOAD = 10mA, output > 2.048V 6
Short-Circuit Current, sourcing ISC 50 mA Sourcing 7
Short-Circuit Current, sinking ISC 50 mA Sinking 7
Turn-On Settling Time 20 ms To 0.1% at VIN = 5V with CL = 0 7
Load Capacitance CL 0.1 nF 7
Current, overtemperature IQ 85 µA 0°C ≤ TA ≤ 125°C 7
Junction-to-Ambient Thermal Resistance RθJA 176.7 °C/W SOT23-3 4
Junction-to-Board Thermal Resistance RθJB 22.9 °C/W SOT23-3 4
Junction-to-Top Characterization Parameter ψJT 4.2 °C/W SOT23-3 4
Junction-to-Board Characterization Parameter ψJB 26.7 °C/W SOT23-3 4
Junction-to-Case (Top) Thermal Resistance RθJC (top) 84.9 °C/W SOT23-3 4

CAD (KiCad official)

  • Symbol: REF345SOT233
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: ref345sot233-etched.step / ref345sot233-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ref345sot233.step / ref345sot233.glb are the bare package body.

Provenance

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

  • Datasheet: analogysemi datasheet (17 pp, sha256 1bd116cea5a7950d, retrieved 2026-10-18, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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