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APS2420ATBER
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Wuxi Chipown Micro-electronics DC-DC Converters, SOT-23-5L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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APS2420ATBER
Wuxi Chipown Micro-electronics · DC-DC Converters · SOT-23-5L
APS2420ATBER from Wuxi Chipown Micro-electronics, in a SOT-23-5L. 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 | EN | input | Regulator enable control input: above 1.1 V it turns the regulator on, below 0.6 V it turns the regulator off, and it must not be left floating. |
| 2 | GND | power_in | Ground pin. |
| 3 | LX | output | Power output switch node connected to the external inductor and to the drains of the internal P-channel and N-channel MOSFET switches. |
| 4 | VIN | power_in | Power supply input pin that must be tightly decoupled to ground with a 22 µF or larger ceramic capacitor. |
| 5 | FB | input | Feedback input pin connected to the midpoint of the external resistor divider; the feedback threshold voltage is 0.6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Wuxi Chipown Micro-electronics |
| Package | SOT-23-5L |
| Category | Power Management ICs |
| Pins | 5 |
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 range | VIN | 2.7 | 6 | V | 5 | ||
| Operating temperature range | -40 | 85 | °C | 5 | |||
| VIN absolute maximum voltage | VIN | -0.3 | 7 | V | 5 | ||
| EN, FB absolute maximum voltage | EN, FB | -0.3 | V | upper limit VIN + 0.3 V | 5 | ||
| SW absolute maximum voltage | SW | -0.3 | V | upper limit VIN + 0.3 V | 5 | ||
| ESD rating Human Body Model | -4 | 4 | kV | Human Body Model | 5 | ||
| Storage temperature range | -65 | 150 | °C | 5 | |||
| Lead temperature (soldering) | 260 | °C | soldering, 10 s | 5 | |||
| Thermal resistance junction to ambient SOT-23-5L | ӨJA | 220 | °C/W | SOT-23-5L; based on 1 sq in board with 1 oz copper | 5 | ||
| Thermal resistance junction to case SOT-23-5L | ӨJC | 55 | °C/W | SOT-23-5L | 5 | ||
| Input DC supply current, operating mode | 60 | 300 | µA | VFB = 0.5 V 或 VOUT = 90% | 5 | ||
| Input DC supply current, shutdown mode | 0.1 | 1 | µA | VFB = 0 V, VIN = 4.2 V | 5 | ||
| Feedback voltage | VFB | 0.588 | 0.6 | 0.612 | V | TA = +25 °C | 5 |
| Feedback voltage | VFB | 0.5865 | 0.6 | 0.6135 | V | TA = 0 °C ≤ TA ≤ 85 °C | 5 |
| Feedback voltage | VFB | 0.582 | 0.6 | 0.618 | V | TA = -40 °C ≤ TA ≤ 85 °C | 5 |
| VFB input bias current | -30 | 30 | nA | VFB = 0.65 V | 5 | ||
| Reference voltage line regulation | 0.5 | 0.6 | %/V | VIN = 2.7 V ~ 5.5 V, IOUT = 300 mA | 5 | ||
| Output voltage line regulation | 0.5 | 0.6 | %/V | VIN = 2.7 V ~ 5.5 V, IOUT = 300 mA | 5 | ||
| Output voltage load regulation | 0.25 | %/A | IOUT = 300 to 2000 mA | 5 | |||
| Peak inductor current | 4.5 | A | VIN = 3 V, VFB = 0.5 V 或 VOUT = 90%, Duty Cycle <35% | 5 | |||
| Oscillator frequency | 0.8 | 1 | 1.2 | MHz | VFB = 0.6 V 或 VOUT = 100% | 5 | |
| P-channel FET RDS(ON) | RDS(ON) | 110 | mΩ | ILX = 300 mA | 5 | ||
| N-channel FET RDS(ON) | RDS(ON) | 80 | mΩ | ILX = -300 mA | 5 | ||
| LX leakage current | -1 | 0.01 | 1 | µA | VEN = 0 V, VLX = 0 V 或 5 V, VIN = 5 V | 5 | |
| Soft start time | 1 | ms | 5 | ||||
| UVLO VIN rising threshold | 2.3 | 2.5 | 2.7 | V | VIN rising | 5 | |
| UVLO VIN falling threshold | 2 | 2.2 | 2.4 | V | VIN falling | 5 | |
| EN low threshold voltage | EN | 0.6 | V | -40 °C ≤ TA ≤ 85 °C | 5 | ||
| EN high threshold voltage | EN | 1.1 | V | 5 | |||
| EN leakage current | -1 | 0.01 | 1 | µA | 5 | ||
| Over-temperature protection threshold | 155 | °C | 5 | ||||
| PG threshold (percent of set output voltage) | PG | 85 | 91.5 | % | 5 |
CAD (KiCad official)
- Symbol:
APS2420ATBER - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5L (KiCad packages3D, STEP)
- 3D model files:
aps2420atber-etched.step/aps2420atber-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);aps2420atber.step/aps2420atber.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Wuxi Chipown Micro-electronics datasheet (16 pp, sha256
09c138c924b19950, retrieved 2026-10-27, 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), consensusoff(skipped (clean text read)), 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).
# APS2420ATBER
**Wuxi Chipown Micro-electronics** · DC-DC Converters · SOT-23-5L
APS2420ATBER from Wuxi Chipown Micro-electronics, in a SOT-23-5L. 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 | EN | input | Regulator enable control input: above 1.1 V it turns the regulator on, below 0.6 V it turns the regulator off, and it must not be left floating. |
| 2 | GND | power_in | Ground pin. |
| 3 | LX | output | Power output switch node connected to the external inductor and to the drains of the internal P-channel and N-channel MOSFET switches. |
| 4 | VIN | power_in | Power supply input pin that must be tightly decoupled to ground with a 22 µF or larger ceramic capacitor. |
| 5 | FB | input | Feedback input pin connected to the midpoint of the external resistor divider; the feedback threshold voltage is 0.6 V. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Wuxi Chipown Micro-electronics |
| Package | SOT-23-5L |
| Category | Power Management ICs |
| Pins | 5 |
## 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 range | VIN | 2.7 | | 6 | V | | 5 |
| Operating temperature range | | -40 | | 85 | °C | | 5 |
| VIN absolute maximum voltage | VIN | -0.3 | | 7 | V | | 5 |
| EN, FB absolute maximum voltage | EN, FB | -0.3 | | | V | upper limit VIN + 0.3 V | 5 |
| SW absolute maximum voltage | SW | -0.3 | | | V | upper limit VIN + 0.3 V | 5 |
| ESD rating Human Body Model | | -4 | | 4 | kV | Human Body Model | 5 |
| Storage temperature range | | -65 | | 150 | °C | | 5 |
| Lead temperature (soldering) | | | | 260 | °C | soldering, 10 s | 5 |
| Thermal resistance junction to ambient SOT-23-5L | ӨJA | | | 220 | °C/W | SOT-23-5L; based on 1 sq in board with 1 oz copper | 5 |
| Thermal resistance junction to case SOT-23-5L | ӨJC | | | 55 | °C/W | SOT-23-5L | 5 |
| Input DC supply current, operating mode | | | 60 | 300 | µA | VFB = 0.5 V 或 VOUT = 90% | 5 |
| Input DC supply current, shutdown mode | | | 0.1 | 1 | µA | VFB = 0 V, VIN = 4.2 V | 5 |
| Feedback voltage | VFB | 0.588 | 0.6 | 0.612 | V | TA = +25 °C | 5 |
| Feedback voltage | VFB | 0.5865 | 0.6 | 0.6135 | V | TA = 0 °C ≤ TA ≤ 85 °C | 5 |
| Feedback voltage | VFB | 0.582 | 0.6 | 0.618 | V | TA = -40 °C ≤ TA ≤ 85 °C | 5 |
| VFB input bias current | | -30 | | 30 | nA | VFB = 0.65 V | 5 |
| Reference voltage line regulation | | | 0.5 | 0.6 | %/V | VIN = 2.7 V ~ 5.5 V, IOUT = 300 mA | 5 |
| Output voltage line regulation | | | 0.5 | 0.6 | %/V | VIN = 2.7 V ~ 5.5 V, IOUT = 300 mA | 5 |
| Output voltage load regulation | | | 0.25 | | %/A | IOUT = 300 to 2000 mA | 5 |
| Peak inductor current | | | 4.5 | | A | VIN = 3 V, VFB = 0.5 V 或 VOUT = 90%, Duty Cycle <35% | 5 |
| Oscillator frequency | | 0.8 | 1 | 1.2 | MHz | VFB = 0.6 V 或 VOUT = 100% | 5 |
| P-channel FET RDS(ON) | RDS(ON) | | 110 | | mΩ | ILX = 300 mA | 5 |
| N-channel FET RDS(ON) | RDS(ON) | | 80 | | mΩ | ILX = -300 mA | 5 |
| LX leakage current | | -1 | 0.01 | 1 | µA | VEN = 0 V, VLX = 0 V 或 5 V, VIN = 5 V | 5 |
| Soft start time | | | 1 | | ms | | 5 |
| UVLO VIN rising threshold | | 2.3 | 2.5 | 2.7 | V | VIN rising | 5 |
| UVLO VIN falling threshold | | 2 | 2.2 | 2.4 | V | VIN falling | 5 |
| EN low threshold voltage | EN | | | 0.6 | V | -40 °C ≤ TA ≤ 85 °C | 5 |
| EN high threshold voltage | EN | 1.1 | | | V | | 5 |
| EN leakage current | | -1 | 0.01 | 1 | µA | | 5 |
| Over-temperature protection threshold | | | 155 | | °C | | 5 |
| PG threshold (percent of set output voltage) | PG | 85 | 91.5 | | % | | 5 |
## CAD (KiCad official)
- Symbol: `APS2420ATBER`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5L (KiCad packages3D, STEP)
- 3D model files: `aps2420atber-etched.step` / `aps2420atber-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `aps2420atber.step` / `aps2420atber.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Wuxi Chipown Micro-electronics datasheet](docs/aps2420atber-datasheet.pdf) (16 pp, sha256 `09c138c924b19950`, retrieved 2026-10-27, 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 `off` (skipped (clean text read)), 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/aps2420atber-datasheet.pdf)