component
AP3125AEKTR-G1
Public Made by Adomby adom
Diodes Incorporated AC-DC Controllers & Regulators, SOT-26. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
AP3125AEKTR-G1
Diodes Incorporated · AC-DC Controllers & Regulators · SOT-26
AP3125AEKTR-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 and current return for the driver and control circuits. |
| 2 | FB | input | Feedback input connected directly to the opto-coupler; FB above 4.5V for about 70ms triggers protection, and FB below 1.55V stops the drive pulses. |
| 3 | CTRL | input | Latch trigger input that latches on a voltage below 1V or above 3V; leave open if unused, and its sourcing current must be limited below 5mA. |
| 4 | SENSE | input | Current sense input with a maximum SENSE voltage of 0.95V typical and 250ns leading-edge blanking; negative undershoot greater than -0.3V may damage the pin, so an RC filter or series resistor is recommended. |
| 5 | VCC | power_in | Supply voltage for the driver and control circuits, with recommended operating range 10V to 25V, UVLO turn-on at 16V typical, turn-off at 7.6V typical, and OVP at 28.5V typical. |
| 6 | GATE | output | Gate driver output with 13V typical clamping voltage and at least 8V high level at IO=20mA and VCC=12V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-26 |
| Category | Power Supply Chip |
| 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 |
|---|---|---|---|---|---|---|---|
| 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 at TA < +25°C | 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 | ||||
| Supply Voltage | VCC | 10 | 25 | 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 | ||
| 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 (CTRL pin) | 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:
AP3125AEKTR-G1 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-26, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.45 mm tall, datasheet A, max). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
- 3D model files:
ap3125aektr-g1-etched.step/ap3125aektr-g1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ap3125aektr-g1.step/ap3125aektr-g1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (13 pp, sha256
5c4b09361eff7f55, retrieved 2026-11-12, 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).