component
NCP1370BDR2G
Public Made by Adomby adom
onsemi LED Drivers, SOIC-8. Pinout extracted from 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
markdownNCP1370BDR2G
onsemi · LED Drivers · SOIC-8
NCP1370BDR2G from onsemi, in a SOIC-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 | ILIM | input | Peak current limit and secondary-diode short detection threshold. A resistor to GND on this pin sets the cycle-by-cycle peak current limit (VILIMIT) and the VCS(stop) threshold used to detect an output/secondary-diode short circuit. |
| 2 | ZCD | input | Zero-Crossing Detection input. Connects (via a divider) to the transformer auxiliary winding to detect the core-reset (demagnetization) event for quasi-resonant valley switching. Feeds the valley-selection state machine and the propagation delay tZCD(DEM). |
| 3 | CS | input | Current-sense input. Monitors the primary MOSFET peak current developed across an external sense resistor. Used for cycle-by-cycle peak-current control, leading-edge blanking, feed-forward compensation, and the CS-pin short-circuit / secondary diode-short protections. |
| 4 | GND | power_in | Controller ground reference. All internal thresholds and the CS/ZCD/ILIM/VIN sense signals are referenced to this pin. |
| 5 | DRV | output | Totem-pole gate-driver output for the external primary-side MOSFET. Sources 300 mA / sinks 500 mA and is internally clamped to VDRV(high) (~12 V typ). Maximum voltage range −0.3 V to VDRV; current range −500 mA / +800 mA. |
| 6 | VCC | power_in | Controller supply voltage. Operates over a wide VCC range with VCC(on) ≈ 12 V startup threshold, VCC(off) ≈ 9 V UVLO, and absolute maximum +35 V; a low VCC(on) allows powering from a standby auxiliary supply. Includes VCC over-voltage protection (auto-recovery on the 'B' variant). |
| 7 | VIN | input | HV-rail sense input: performs brown-out protection, line voltage sensing for valley selection and line feed-forward, and adjustable OVP. Typically fed from a resistor divider off the bulk/HV rail; a Zener to this pin can be used to trigger the adjustable OVP shutdown (OVP2). Absolute max −0.3 V to +5.5 V. |
| 8 | DIM | input | Analog or PWM dimming control input, also used to enter OFF mode. An analog voltage between VDIM(EN) and VDIM100 sets the LED current; alternatively a PWM signal with amplitude greater than VDIM100 performs digital dimming. Absolute max −0.3 V to +7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOIC-8 |
| Category | LED Drivers |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
NCP1370BDR2G
CAD (KiCad official)
- Symbol:
NCP1370BDR2G - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
ncp1370bdr2g-etched.step/ncp1370bdr2g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ncp1370bdr2g.step/ncp1370bdr2g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (19 pp, sha256
ee6c8a742961a1f8, 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).