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Contents

README

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HG9910M

HGSEMI · LED Drivers · SOIC-8

HG9910M from HGSEMI, 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 VIN power_in Input voltage supply, 8V to 450V DC. Absolute maximum 470V. Feeds the internal linear regulator that generates VDD.
2 CS input Current sense input. Senses the LED string / MOSFET source current via an external sense resistor. Internal pull-in threshold is 250 mV typical (225-275 mV). Absolute maximum -0.3V to +15.8V.
3 GND power_in Device ground reference for all internal circuitry.
4 GATE output Gate drive output for the external switching MOSFET. High output at VDD (7.5V nom), rise/fall time ~30 ns typ into 500 pF. Absolute maximum -0.3V to +15.8V.
5 PWMD input Low-frequency PWM dimming pin, also functions as enable input. Internal 100kΩ (50-150kΩ) pull-down to GND. VIL max 1.0V, VIH min 2.4V. Accepts 0-100% duty cycle up to a few kHz.
6 VDD power_out Internally regulated supply voltage output, 7.5V nominal (7.0-8.0V). Can source up to 1mA for external circuitry. Requires an external storage capacitor to hold up the rail near AC input zero-crossings. Absolute maximum 13.5V.
7 LD input Linear dimming input. Adjusts the current-sense comparator threshold (voltage range 0 to 250 mV) to modulate LED current linearly. Absolute maximum -0.3V to +15.1V.
8 ROSC input Oscillator programming pin. An external resistor from this pin to GND sets the PWM switching frequency (e.g. 1.00 MΩ → ~25 kHz, 226 kΩ → ~100 kHz, up to ~300 kHz).

Key specifications

Parameter Value
Manufacturer HGSEMI
Package SOIC-8
Category LED-drv
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • HG9910MM/TR
  • HG9910MM
  • HG9910MN

CAD (KiCad official)

  • Symbol: HG9910M
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: hg9910m-etched.step / hg9910m-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hg9910m.step / hg9910m.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: HGSEMI datasheet (8 pp, sha256 edceff046e76256f, 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).

Datasheet PDF