component
AP1501-12
Public Made by Adomby adom
UMW DC-DC Converters, TO-263-5. 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
markdownAP1501-12
UMW · DC-DC Converters · TO-263-5
AP1501-12 from UMW, in a TO-263-5. 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 | Positive input supply for the switching regulator; a suitable input bypass capacitor must be present at this pin to minimize voltage transients and supply the regulator's switching currents. |
| 2 | Output | output | Internal switch output that switches between (+VIN - VSAT) and approximately -0.5V at a duty cycle of about VOUT/VIN, so the PCB copper area connected to it should be kept to a minimum to limit coupling to sensitive circuitry. |
| 3 | Gnd | power_in | Circuit ground for the regulator. |
| 4 | Feedback | input | Senses the regulated output voltage to complete the feedback loop. |
| 5 | ON/OFF | input | Logic-level shutdown pin: pulling it below approximately 1.3V turns the regulator on and pulling it above 1.3V (up to a maximum of 25V) shuts it down; if unused it can be tied to ground or left open, leaving the regulator on. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | TO-263-5 |
| 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 |
|---|---|---|---|---|---|---|---|
| Output voltage (AP1501-12, 25°C limits) | VOUT | 11.52 | 12 | 12.48 | V | 15V≤VIN≤40V, 0.2A≤ILOAD≤3A, TJ=25°C | 5 |
| Output voltage (AP1501-12, full operating temperature range limits) | VOUT | 11.4 | 12.6 | V | 15V≤VIN≤40V, 0.2A≤ILOAD≤3A, over full operating temperature range | 5 | |
| Oscillator frequency (25°C limits) | fO | 127 | 150 | 173 | kHz | VIN=24V (12V version), ILOAD=500mA, TJ=25°C | 6 |
| Oscillator frequency (full operating temperature range limits) | fO | 110 | 173 | kHz | VIN=24V (12V version), ILOAD=500mA, over full operating temperature range | 6 | |
| Standby quiescent current | ISTBY | 80 | 200 | µA | VIN=40V, ON/OFF pin=5V (OFF) | 6 | |
| ON/OFF pin logic input threshold voltage, high (regulator OFF) | VIH | 2 | V | High (Regulator OFF) | 7 | ||
| ON/OFF pin logic input threshold voltage, low (regulator ON) | VIL | 0.6 | V | Low (Regulator ON) | 7 | ||
| ON/OFF pin input current, high | IH | 5 | 15 | µA | VLOGIC=2.5V (Regulator OFF) | 7 | |
| ON/OFF pin input current, low | IL | 0.02 | 5 | µA | VLOGIC=0.5V (Regulator ON) | 7 | |
| Maximum supply voltage | 45 | V | 4 | ||||
| ON/OFF pin input voltage | -0.3 | 40 | V | 4 | |||
| Feedback pin voltage | -0.3 | 40 | V | 4 | |||
| Output voltage to ground (steady state) | -1 | V | Steady state | 4 | |||
| Storage temperature range | -65 | 150 | °C | 4 | |||
| ESD susceptibility, human body model | 2 | kV | Human Body Model (Note 2) | 4 | |||
| Soldering temperature, vapor phase | 215 | °C | 60 sec. | 4 | |||
| Soldering temperature, infrared | 245 | °C | 10 sec. | 4 | |||
| Soldering temperature, T package | 260 | °C | 10 sec. | 4 | |||
| Maximum junction temperature | TJ | 150 | °C | 4 | |||
| Operating junction temperature range | TJ | -40 | 125 | °C | 4 | ||
| Supply voltage | 4.5 | 40 | V | 4 | |||
| Thermal resistance, junction to case | θJC | 2 | °C/W | TO-220 or TO-263 package, junction to case | 7 | ||
| Thermal resistance, junction to ambient (TO-263, 0.5 in² copper) | θJA | 50 | °C/W | TO-263 tab soldered to single PCB, 0.5 in² (1 oz.) copper (Note 12) | 7 | ||
| Thermal resistance, junction to ambient (TO-263, 2.5 in² copper) | θJA | 30 | °C/W | TO-263 tab soldered to single-sided PCB, 2.5 in² (1 oz.) copper (Note 13) | 7 | ||
| Thermal resistance, junction to ambient (TO-263, 3 in² copper, double-sided) | θJA | 20 | °C/W | TO-263 tab soldered to double-sided PCB, 3 in² (1 oz.) copper on AP1501S side plus ~16 in² on other side (Note 14) | 7 |
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 | leads soldered to a printed circuit board with (1 oz.) copper area of approximately 1 in2 | 8 |
CAD (KiCad official)
- Symbol:
AP1501-12 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
ap1501-12-etched.step/ap1501-12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ap1501-12.step/ap1501-12.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (28 pp, sha256
d716270a9a304615, retrieved 2026-10-20, 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).