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AP3125VKTR-G1
Public Made by Adomby adom
Diodes Incorporated AC-DC Controllers And Regulators, SOT-26. 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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README
markdownAP3125VKTR-G1
Diodes Incorporated · AC-DC Controllers And Regulators · SOT-26
AP3125VKTR-G1 from Diodes Incorporated, in a SOT-26. 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 | GND | power_in | Signal ground serving as the current return for the driver and control circuits. |
| 2 | FB | input | Feedback input connected directly to the opto-coupler, where FB voltage sets the peak current, the green-mode threshold is about 2.1V, and sustained voltage above 4.5V for about 70ms triggers protection. |
| 3 | CTRL | input | Latch trigger input that latches protection when the voltage falls below about 1V or rises above about 3V, must have sourcing current limited below 5mA, and can take an NTC to GND for OTP or be left open if unused. |
| 4 | SENSE | input | Current sense input with a maximum sense voltage of about 0.95V (0.9V to 1V), where turn-off undershoot can reach about -0.3V so a small RC filter or series resistor is recommended. |
| 5 | VCC | power_in | Supply voltage for the driver and control circuits, recommended at 10V to 25V, with UVLO turn-on at about 16V, turn-off at about 7.6V, VCC OVP at about 28.5V, and an absolute maximum of 30V. |
| 6 | GATE | output | Gate driver output for the external power MOSFET, with output high of at least 8V at 20mA, output low of at most 1V, and output clamping at about 13V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-26 |
| Category | Power Management (PMIC) |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VCC Supply Voltage | VCC | 10 | 25 | V | 4 | ||
| VCC Power Supply Voltage | VCC | 30 | V | 4 | |||
| Gate Output Current | IO | 350 | mA | 4 | |||
| Input Voltage to FB, SENSE, CTRL | VFB, VSENSE, VCTRL | -0.3 | 7 | V | 4 | ||
| Thermal Resistance (Junction to Ambient) | θJA | 250 | °C/W | 4 | |||
| Power Dissipation | PD | 500 | mW | TA < +25°C | 4 | ||
| Operating Junction Temperature | TJ | -40 | 150 | °C | 4 | ||
| Storage Temperature Range | TSTG | 150 | °C | 4 | |||
| ESD (Human Body Model) | 3000 | V | 4 | ||||
| ESD (Machine Model) | 300 | V | 4 | ||||
| Startup Current | ISTARTUP | 1 | 10 | μA | 5 | ||
| Operating Supply Current | ICC | 0.5 | 0.7 | 1 | mA | VFB=0V, CL=1nF | 5 |
| Operating Supply Current | ICC | 0.6 | 1.2 | 2 | mA | VFB=3V, CL=0nF | 5 |
| UVLO (on) | 14.5 | 15.8 | 16.5 | V | 5 | ||
| VCC Maintain | 8.6 | 9.1 | 9.6 | V | 5 | ||
| UVLO (off) | 7.1 | 7.6 | 8.1 | V | 5 | ||
| VCC OVP | 27 | 28.5 | 30 | V | 5 | ||
| VCC Clamp | 31 | 34 | V | ICC=5mA | 5 | ||
| Maximum Duty Cycle | 70 | 75 | 80 | % | 5 | ||
| Oscillation Frequency | 60 | 65 | 70 | kHz | 5 | ||
| Green Mode Frequency | 20 | 30 | kHz | 5 | |||
| Frequency Temperature Stability | 5 | % | -20°C to 125°C (Note 5) | 5 | |||
| Frequency Voltage Stability | 3 | % | VCC=12V to 30V | 5 | |||
| Frequency Dithering | -4 | 6 | 8 | % | 5 | ||
| VCS Maximum SENSE Voltage | VCS | 0.9 | 0.95 | 1 | V | VFB=4.5V | 5 |
| FOCP Voltage | 1.5 | 1.7 | 1.9 | V | 5 | ||
| LEB Time of SENSE | 150 | 250 | 350 | ns | 5 | ||
| Soft-start Time | 3 | 5 | 8 | ms | 5 | ||
| Ratio of Input Voltage to Current Sense Voltage | 2.5 | 3 | 3.5 | V/V | 5 | ||
| Input Impedance | 12 | 15 | 18 | kΩ | 5 | ||
| Source Current | -0.2 | -0.27 | -0.34 | mA | VFB=0V | 5 | |
| Input Voltage for Zero Duty | 1.3 | 1.55 | 1.8 | V | 5 | ||
| Output Low Level | 1 | V | IO=20mA, VCC=12V | 5 | |||
| Output High Level | 8 | V | IO=20mA, VCC=12V | 5 | |||
| Output Clamping Voltage | 11 | 13 | 15 | V | 5 | ||
| Rising Time | 150 | 250 | ns | CL=1nF, VCC=13V | 5 | ||
| Falling Time | 50 | 100 | ns | CL=1nF, VCC=13V | 5 | ||
| Source Current | 90 | 100 | 110 | μA | 6 | ||
| Low Threshold Trigger for Latch | 0.94 | 1 | 1.06 | V | 6 | ||
| High Threshold Trigger for Latch | 2.85 | 3 | 3.15 | V | 6 | ||
| Pull-up Current | 2 | mA | 6 |
CAD (KiCad official)
- Symbol:
AP3125VKTR-G1 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-26 (KiCad packages3D, STEP)
- 3D model files:
ap3125vktr-g1-etched.step/ap3125vktr-g1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ap3125vktr-g1.step/ap3125vktr-g1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (13 pp, sha256
092b5d42b233ff24, retrieved 2026-10-18, tier: lcsc) - 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).