component
NDP1331KC
Public Made by Adomby adom
NDP DC-DC Converters, SOP-8. Datasheet-verified pinout, 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
markdownNDP1331KC
NDP · DC-DC Converters · SOP-8
NDP1331KC from NDP, in a SOP-8. 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 | FB | input | Feedback input for output voltage regulation. Connect to a resistor divider from VOUT; internal reference is 1.0 V (VOUT = 1.0 V * (RFB_TOP + RFB_LOW)/RFB_LOW). Also used to program cable-drop compensation via divider impedance. |
| 2 | CSP | input | Positive input of the current-sense amplifier. Connect to the high side of the external current-sense resistor at the inductor/output node. Typical sense threshold CSP-CSN = 60 mV. |
| 3 | CSN | input | Negative input of the current-sense amplifier. Connect to the low side of the external current-sense resistor (output side). Together with CSP forms the average current-mode feedback path. |
| 4 | VIN | power_in | Power input pin. Operating range 7 V to 30 V (abs max 33 V); over-voltage protection engages at 32 V. Bypass with a low-ESR input capacitor (e.g. 100 µF / 35 V) placed close to the pin. |
| 5 | SW | output | Switching node, output of the integrated high-side (75 mΩ) and low-side (35 mΩ) power MOSFETs. Connect to the external inductor. Pins 5 and 6 are tied internally to the same SW node. |
| 6 | SW | output | Switching node (parallel with pin 5). Connect to the external inductor. Absolute maximum -0.3 V to VIN+0.3 V. |
| 7 | FS | input | Switching-frequency programming pin. Float for 130 kHz; connect an external resistor to GND to set frequency up to 300 kHz (e.g. 470 kΩ → 300 kHz, 1 MΩ → 220 kHz, 2 MΩ → 180 kHz). Pulling FS below 0.3 V puts the part into a low-current shutdown state. |
| 8 | GND | power_in | Device ground. Return for input capacitor, feedback divider, and FS resistor. Absolute maximum -0.3 V to 6.5 V on all non-power pins referenced to this node. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | NDP |
| Package | SOP-8 |
| Category | PMIC |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
NDP1331KC
CAD (KiCad official)
- Symbol:
NDP1331KC - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
ndp1331kc-etched.step/ndp1331kc-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ndp1331kc.step/ndp1331kc.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: NDP datasheet (10 pp, sha256
c27fa13c7af80c1c, retrieved 2026-08-17, tier: lcsc) - 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).