component
AP7343Q-18W5-7
Public Made by Adomby adom
Diodes Incorporated Linear Voltage Regulators (LDO), SOT-25. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownAP7343Q-18W5-7
Diodes Incorporated · Linear Voltage Regulators (LDO) · SOT-25
AP7343Q-18W5-7 from Diodes Incorporated, in a SOT-25. 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 | Power input pin of the regulator, which must be decoupled to GND with a minimum 0.47μF ceramic capacitor per the application information. |
| 2 | GND | power_in | Ground pin; the regulator ground should be connected to the external circuit ground to reduce voltage drop from trace impedance. |
| 3 | EN | input | Enable pin that must be driven either high or low and must not be floating; driving it high enables the regulator and pulling it low puts the regulator into shutdown mode. |
| 4 | NC | unconnected | No connect, not connected internally; the datasheet recommends connecting it to GND to maximize PCB copper for thermal dissipation. |
| 5 | VOUT | power_out | Regulated power output pin; short-circuit protection clamps the output current to approximately 60mA when shorted to GND. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-25 |
| Category | Power Supply Chip |
| Pins | 5 |
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 Voltage | VIN | 1.7 | 5.25 | V | 3 | ||
| Output Current | IOUT | 0 | 300 | mA | 3 | ||
| Operating Junction Temperature | TJ | -40 | 125 | °C | 3 | ||
| Operating Ambient Temperature | TA | -40 | 125 | °C | 3 | ||
| Input Voltage | VIN | 6 | V | 2 | |||
| Input Voltage for EN Pin | VEN | 6 | V | 2 | |||
| Output Voltage | VOUT | -0.3 | V | upper limit printed as VIN + 0.3 V | 2 | ||
| Output Current | IOUT | 400 | mA | 2 | |||
| Power Dissipation | PD | 698 | mW | SOT25 package | 2 | ||
| Operating Junction Temperature | TJ | -40 | 150 | °C | 2 | ||
| Storage Temperature | TSTG | -55 | 150 | °C | 2 | ||
| ESD HBM Human Body Model | 2 | kV | printed as > 2 kV | 2 | |||
| ESD CDM Charge Device Model | -500 | 500 | V | 2 | |||
| Output Voltage Accuracy | VOUT(T) | -20 | 20 | mV | VOUT(T) < 2.0V, VIN = VOUT(T) + 1V, TA = +25°C | 3 | |
| Input Voltage | VIN | 1.7 | 5.25 | V | TA = -40°C to +85°C | 3 | |
| Line Regulation | dVOUT/dVIN/VOUT | 0.02 | 0.1 | %/V | VIN = (VOUT, Nom + 1.0V) to 5.25V, IOUT = 1.0mA | 3 | |
| Load Regulation | 15 | 30 | mV | VIN = VOUT, Nom + 1.0V, IOUT = 1mA to 300mA | 3 | ||
| Quiescent Current | 35 | 60 | µA | IOUT = 0mA | 3 | ||
| ISTANDBY | ISTANDBY | 0.01 | 1 | µA | VEN = 0V (Disabled) | 3 | |
| EN Input Low Voltage | 0 | 0.5 | V | 3 | |||
| EN Input High Voltage | 1.3 | 5.25 | V | 3 | |||
| EN Input Leakage | -1 | 1 | µA | VEN = 0V, VIN = 5.0V or VEN = 5.0V, VIN = 0V | 3 | ||
| Output Current | 300 | mA | 3 | ||||
| Dropout Voltage | 0.3 | 0.41 | V | IOUT = 300mA (SOT25), 1.7V < VOUT ≤ 2.1V | 3 | ||
| Output Voltage Temperature Coefficient | 30 | ppm/°C | IOUT = 30mA, TA = -40°C to +125°C | 3 | |||
| Thermal Shutdown Threshold | TSHDN | 150 | °C | 3 | |||
| Thermal Shutdown Hysteresis | THYS | 20 | °C | 3 | |||
| On Resistance of N-Channel for Auto-Discharge | 30 | Ω | VIN = 4.0V, VEN = 0V (Disabled) | 3 | |||
| Foldback Short Current | 55 | mA | VOUT Short to Ground | 3 | |||
| PSRR | 75 | dB | VIN = (VOUT + 1V) VDC + 0.2Vp-pAC, VOUT ≥ 1.8V, IOUT = 30mA, f = 1kHz | 3 | |||
| Output Noise Voltage | 60 | µVrms | BW = 10Hz to 100kHz, IOUT = 30mA | 3 | |||
| Thermal Resistance Junction to Ambient SOT25 | JA | 179 | °C/W | 3 | |||
| Thermal Resistance Junction to Case SOT25 | JC | 52 | °C/W | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | capacitor is recommended between VIN and GND pins to decouple input power supply glitch. This input capacitor must be located as close as possible to the device to ensure input stability and reduce no | 11 |
CAD (KiCad official)
- Symbol:
AP7343Q-18W5-7 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-25 (KiCad packages3D, STEP)
- 3D model files:
ap7343q-18w5-7-etched.step/ap7343q-18w5-7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ap7343q-18w5-7.step/ap7343q-18w5-7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (20 pp, sha256
8dfa94f851e27f03, retrieved 2026-10-30, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).