component
NDP2331KC
Public Made by Adomby adom
NDP DC-DC Converters, SOP-8. 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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README
markdownNDP2331KC
NDP · DC-DC Converters · SOP-8
NDP2331KC from NDP, in a SOP-8. 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 | VFB | input | Output voltage feedback input; the internal FB reference is 1.0V (0.980V to 1.02V), and the VFB short-protect threshold is 0.6V. |
| 2 | NC | unconnected | No internal connection; the datasheet gives no function or electrical limits for this pin. |
| 3 | EN | input | Enable input; switching is enabled when EN rises above 1.5V and disabled when it falls below 0.6V, with an absolute maximum of -0.3V to 25V to GND. |
| 4 | VIN | power_in | Positive power input with an operating range of 5.5V to 30V and an absolute maximum of -0.3V to 33V to GND. |
| 5 | SW | output | Switching node connected to the inductor, rated -0.3V to VIN+0.3V to GND; pins 5 and 6 are both SW and are internally the same node. |
| 6 | SW | output | Switching node connected to the inductor, rated -0.3V to VIN+0.3V to GND; pins 5 and 6 are both SW and are internally the same node. |
| 7 | GND | power_in | Ground reference for the device. |
| 8 | GND | power_in | Ground reference for the device. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | NDP |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
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 | 5.5 | 30 | V | 3 | ||
| FB Reference Voltage | VFB | 0.98 | 1 | 1.02 | V | 3 | |
| Standby Current | ISB | 1.7 | 2.2 | mA | No Load | 3 | |
| Maximum Duty Cycle | 100 | % | 3 | ||||
| VIN to GND | -0.3 | 33 | V | 2 | |||
| SW to GND | -0.3 | V | 2 | ||||
| FB to GND | -0.3 | 6 | V | 2 | |||
| EN to GND | -0.3 | 25 | V | 2 | |||
| Operating Junction Temperature | -40 | 150 | °C | 2 | |||
| Storage Junction Temperature | -55 | 150 | °C | 2 | |||
| Junction to Ambient Thermal Resistance | 105 | °C/W | 2 | ||||
| Thermal Resistance from Junction to case | θJC | 45 | °C/W | 2 | |||
| Thermal Resistance from Junction to ambient | θJA | 90 | °C/W | 2 | |||
| UVLO_OFF | VUVLO_OFF | 4.8 | V | VIN Rising | 3 | ||
| UVLO_ON | VUVLO_ON | 4.5 | V | VIN Falling | 3 | ||
| Quiescent Current | ICCQ | 1300 | uA | VFB = 1.2V, no switch | 3 | ||
| VFB bias Current | IFB | 0.2 | uA | 3 | |||
| Switching Frequency | FSW | 300 | KHz | 3 | |||
| EN voltage rising threshold | VEN_H | 1.5 | V | EN rising, enable switching | 3 | ||
| EN voltage falling threshold | VEN_L | 0.6 | V | EN falling, disable switching | 3 | ||
| Minimum On-Time | 250 | ns | 3 | ||||
| Current Limit | ILIM | 4.5 | A | 3 | |||
| VFB short protect | VFBSCP | 0.6 | V | 3 | |||
| Hicup Interval | Thiccup | 500 | mS | 3 | |||
| Soft start Time | Tss | 2 | mS | 3 | |||
| RDSON of Power MOS high side | 70 | mΩ | Temp=25℃ | 3 | |||
| RDSON of Power MOS low side | 35 | mΩ | Temp=25℃ | 3 | |||
| Thermal Regulation | TTR | 150 | °C | 3 | |||
| Thermal shutdown Temp | TSD | 165 | °C | 3 | |||
| Thermal Shutdown Hysteresis | TSH | 30 | °C | 3 |
CAD (KiCad official)
- Symbol:
NDP2331KC - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
ndp2331kc-etched.step/ndp2331kc-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ndp2331kc.step/ndp2331kc.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: NDP datasheet (10 pp, sha256
cc5cab9ce24dc764, retrieved 2026-10-18, 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).