component
AP3211KTR-G1
Public Made by Adomby adom
Diodes Incorporated DC-DC Converters, SOT-23-6. Pinout extracted from 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
markdownAP3211KTR-G1
Diodes Incorporated · DC-DC Converters · SOT-23-6
AP3211KTR-G1 from Diodes Incorporated, in a SOT-23-6. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | BS | passive | Bootstrap pin. A bootstrap capacitor (typ. 10nF) is connected between BS and SW to generate the gate-drive rail for the internal high-side NMOS switch. Absolute-max voltage is VSW + 6V. |
| 2 | GND | power_in | Device ground return pin. |
| 3 | FB | input | Feedback pin. Connect to an external resistor divider from VOUT to set the output voltage; regulates to VFB = 0.81V (typ). If VFB exceeds ~20% above nominal (~0.972V) OVP triggers; if VFB < 0.25V the oscillator frequency is folded back (~460kHz) for short-circuit protection. Absolute max -0.3V to 6V. |
| 4 | EN | input | Enable/control input. Drive above 1.5V to enable the IC; drive below 0.4V to shut it down (shutdown supply current ~0.1μA typ, 1μA max). Absolute-max voltage -0.3V to VIN+0.3V. |
| 5 | IN | power_in | Supply input pin. Operating range 4.5V-18V (absolute max 20V). A local input decoupling capacitor (typ. 10μF) to GND is required to keep the DC input voltage stable. |
| 6 | SW | power_out | Power switch output. Connects to the external inductor, freewheeling Schottky diode (asynchronous), and bootstrap capacitor. Absolute-max voltage 21V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23-6 |
| Category | PMIC |
| Pins | 6 |
Ordering variants
AP3211KTR-G1
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 | 4.5 | 18 | V | 4 | ||
| Quiescent Current | IQ | 0.8 | 1.1 | mA | VFB = 0.9V | 4 | |
| Shutdown Supply Current | ISHDN | 0.1 | 1 | µA | VEN = 0V | 4 | |
| Feedback Voltage | VFB | 0.785 | 0.81 | 0.835 | V | 4 | |
| Feedback Bias Current | IFB | -0.1 | 0.1 | µA | VFB = 0.85V | 4 | |
| Switch Leakage Current | ILEAK | 0.1 | 10 | µA | VIN = 18V, VEN = 0V | 4 | |
| Switch Current Limit | ILIM | 1.8 | 2.4 | A | 4 | ||
| EN Pin Threshold (high) | VENH | 1.5 | V | 4 | |||
| EN Pin Threshold (low) | VENL | 0.4 | V | 4 | |||
| Input UVLO Threshold | VUVLO | 3.3 | 3.8 | 4.3 | V | VIN Rising | 4 |
| Oscillator Frequency | fOSC1 | 1.1 | 1.4 | 1.7 | MHz | 4 | |
| Min. Duty Cycle | DMIN | 0 | % | VFB = 0.9V | 4 | ||
| Input Pin Voltage | VIN | -0.3 | 20 | V | 3 | ||
| EN Pin Voltage | VEN | -0.3 | V | 3 | |||
| SW Pin Voltage | VSW | 21 | V | 3 | |||
| Bootstrap Pin Voltage | VBS | -0.3 | V | 3 | |||
| Feedback Pin Voltage | VFB | -0.3 | 6 | V | 3 | ||
| Operating Junction Temperature | TJ | 150 | ºC | 3 | |||
| Storage Temperature | TSTG | -65 | 150 | ºC | 3 | ||
| Lead Temperature (Soldering) | TLEAD | 260 | ºC | Soldering, 10 sec | 3 | ||
| ESD (Human Body Model) | 2000 | V | Human Body Model | 3 | |||
| ESD (Machine Model) | 200 | V | Machine Model | 3 | |||
| Thermal Resistance | θJA | 220 | ºC/W | 3 | |||
| Input Voltage | VIN | 4.5 | 18 | V | 3 | ||
| Maximum Output Current | IOUT (MAX) | 1.5 | A | 3 | |||
| Operating Ambient Temperature | TA | -40 | 85 | ºC | 3 |
CAD (KiCad official)
- Symbol:
AP3211KTR-G1 - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
ap3211ktr-g1-etched.step/ap3211ktr-g1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ap3211ktr-g1.step/ap3211ktr-g1.glbare the bare package body.
3D model downloads
Two STEP files. Same geometry, different body top:
| File | Size | Use it when |
|---|---|---|
ap3211ktr-g1.step |
97 KB | You want the bare part, or you mark your own boards. |
ap3211ktr-g1-etched.step |
1.9 MB | You want the part with AP3211KTR-G1 already on it. |
The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 492 faces against 117 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (11 pp, sha256
e19ceaa554a5443e, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).