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AP1501S-ADJ
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HGSEMI DC-DC Converters, TO-263-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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AP1501S-ADJ
HGSEMI · DC-DC Converters · TO-263-5
AP1501S-ADJ from HGSEMI, 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 | Supply input that requires a DC source of 4.5V to 40V, with a large-value capacitor between VIN and GND to suppress supply noise. |
| 2 | OUTPUT | output | Power switch output, a switching node that feeds the output load; the OUT pin must not go below the internal parasitic diode turn-on voltage, and a Schottky diode with Vf below 0.5V is recommended. |
| 3 | GND | power_in | Ground pin that should be routed off the Schottky-diode-to-output-capacitor ground path so switching current spikes do not couple noise into the circuit. |
| 4 | FEEDBACK | bidirectional | Voltage feedback pin that senses the output through an external resistor divider, with a threshold of 1.23V. |
| 5 | ON_OFF | input | Enable pin: a low level (below 0.8V) turns the chip on and a high level (above 1.4V) turns it off, and it defaults to low when floating. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| 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 regulation (ADJ, feedback-set) | VOUT | 1.193 | 1.23 | 1.267 | V | VIN=4.5V |
4 |
| Standby current | ISTBY | 80 | 200 | uA | VON_OFF=5V | 5 | |
| Quiescent operating current | IQ | 2 | 10 | mA | VON_OFF=0V, VFB=VIN | 5 | |
| Oscillator (switching) frequency | FOSC | 127 | 150 | 173 | KHz | 5 | |
| Current limit | IL | 3.6 | 4.8 | 6.9 | A | VFB=0 | 5 |
| ON_OFF pin threshold high (control off) | VON_OFF | 1.4 | V | 5 | |||
| ON_OFF pin threshold low (control on) | VON_OFF | 0.8 | V | 5 | |||
| ON_OFF pin leakage current (OFF) | IH | 5 | 30 | uA | VON_OFF=2.5V (OFF) | 5 | |
| ON_OFF pin leakage current (ON) | IL | 0.2 | 10 | uA | VON_OFF=0.5V (ON) | 5 | |
| Saturation voltage | VCE | 1.3 | 1.5 | V | VFB=0V, IOUT=3A | 5 | |
| Input operating voltage | VIN | 4.5 | 40 | V | 5 | ||
| Input voltage (recommended operating) | VIN | 5 | 40 | V | 3 | ||
| Operating junction temperature (recommended) | TJ | -40 | 125 | °C | 3 | ||
| Input voltage (absolute maximum) | VIN | -0.3 | 45 | V | 3 | ||
| Feedback pin voltage (absolute maximum) | VFB | -0.3 | V | Printed as -0.3 to VIN | 3 | ||
| ON_OFF pin voltage (absolute maximum) | VON_OFF | -0.3 | V | Printed as -0.3 to VIN | 3 | ||
| Power switch output pin voltage (absolute maximum) | VOUT_PUT | -0.3 | V | Printed as -0.3 to VIN | 3 | ||
| Operating junction temperature (absolute maximum) | TJ | -40 | 125 | °C | 3 | ||
| Storage temperature | TSTG | -65 | 150 | °C | 3 | ||
| Lead soldering temperature | TLEAD | 245 | °C | 10s | 3 | ||
| ESD capability (human body model) | ESD | 2000 | V | Human body model | 3 | ||
| Thermal resistance junction to ambient | RJA | 50 | °C/W | No heatsink, TO220 and TO263 packages | 5 |
CAD (KiCad official)
- Symbol:
AP1501S-ADJ - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
ap1501s-adj-etched.step/ap1501s-adj-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ap1501s-adj.step/ap1501s-adj.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HGSEMI datasheet (11 pp, sha256
34c362dc826e84bf, retrieved 2026-10-19, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).
# AP1501S-ADJ
**HGSEMI** · DC-DC Converters · TO-263-5
AP1501S-ADJ from HGSEMI, 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 | Supply input that requires a DC source of 4.5V to 40V, with a large-value capacitor between VIN and GND to suppress supply noise. |
| 2 | OUTPUT | output | Power switch output, a switching node that feeds the output load; the OUT pin must not go below the internal parasitic diode turn-on voltage, and a Schottky diode with Vf below 0.5V is recommended. |
| 3 | GND | power_in | Ground pin that should be routed off the Schottky-diode-to-output-capacitor ground path so switching current spikes do not couple noise into the circuit. |
| 4 | FEEDBACK | bidirectional | Voltage feedback pin that senses the output through an external resistor divider, with a threshold of 1.23V. |
| 5 | ON_OFF | input | Enable pin: a low level (below 0.8V) turns the chip on and a high level (above 1.4V) turns it off, and it defaults to low when floating. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HGSEMI |
| 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 regulation (ADJ, feedback-set) | VOUT | 1.193 | 1.23 | 1.267 | V | VIN=4.5V~40V, ILOAD=0.2A~3A | 4 |
| Standby current | ISTBY | | 80 | 200 | uA | VON_OFF=5V | 5 |
| Quiescent operating current | IQ | | 2 | 10 | mA | VON_OFF=0V, VFB=VIN | 5 |
| Oscillator (switching) frequency | FOSC | 127 | 150 | 173 | KHz | | 5 |
| Current limit | IL | 3.6 | 4.8 | 6.9 | A | VFB=0 | 5 |
| ON_OFF pin threshold high (control off) | VON_OFF | 1.4 | | | V | | 5 |
| ON_OFF pin threshold low (control on) | VON_OFF | | | 0.8 | V | | 5 |
| ON_OFF pin leakage current (OFF) | IH | | 5 | 30 | uA | VON_OFF=2.5V (OFF) | 5 |
| ON_OFF pin leakage current (ON) | IL | | 0.2 | 10 | uA | VON_OFF=0.5V (ON) | 5 |
| Saturation voltage | VCE | | 1.3 | 1.5 | V | VFB=0V, IOUT=3A | 5 |
| Input operating voltage | VIN | 4.5 | | 40 | V | | 5 |
| Input voltage (recommended operating) | VIN | 5 | | 40 | V | | 3 |
| Operating junction temperature (recommended) | TJ | -40 | | 125 | °C | | 3 |
| Input voltage (absolute maximum) | VIN | -0.3 | | 45 | V | | 3 |
| Feedback pin voltage (absolute maximum) | VFB | -0.3 | | | V | Printed as -0.3 to VIN | 3 |
| ON_OFF pin voltage (absolute maximum) | VON_OFF | -0.3 | | | V | Printed as -0.3 to VIN | 3 |
| Power switch output pin voltage (absolute maximum) | VOUT_PUT | -0.3 | | | V | Printed as -0.3 to VIN | 3 |
| Operating junction temperature (absolute maximum) | TJ | -40 | | 125 | °C | | 3 |
| Storage temperature | TSTG | -65 | | 150 | °C | | 3 |
| Lead soldering temperature | TLEAD | | | 245 | °C | 10s | 3 |
| ESD capability (human body model) | ESD | | | 2000 | V | Human body model | 3 |
| Thermal resistance junction to ambient | RJA | | 50 | | °C/W | No heatsink, TO220 and TO263 packages | 5 |
## CAD (KiCad official)
- Symbol: `AP1501S-ADJ`
- Footprint: `Package_TO_SOT_SMD:TO-263-5_TabPin6`
- 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files: `ap1501s-adj-etched.step` / `ap1501s-adj-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ap1501s-adj.step` / `ap1501s-adj.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [HGSEMI datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8758141692220182528) (11 pp, sha256 `34c362dc826e84bf`, retrieved 2026-10-19, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/ap1501s-adj-datasheet.pdf)