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QX7136

Public Made by Adom

by adom

QX Micro Devices LED Drivers, SOT-89-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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QX7136

QX Micro Devices · LED Drivers · SOT-89-5

QX7136 from QX Micro Devices, in a SOT-89-5. 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 CS input Current setting pin; LED current is set by ILED = VCS/RCS with VCS typically 50mV (47mV to 53mV).
2 GND power_in Chip ground; keep the RCS return trace to ground thick and short to reduce output current error.
3 VDD power_in Chip power supply, 2.7V to 5.2V operating range with internal clamp at about 5.4V and UVLO at 2.5V typical; place a ~4.7uF capacitor close to this pin.
4 DRV output Gate drive output for an external NMOS transistor; absolute maximum voltage 7V.
5 LED input Drain terminal of the internal NMOS, which supports 10mA to 1000mA output current at VIN=3.6V.

Key specifications

Parameter Value
Manufacturer QX Micro Devices
Package SOT-89-5
Category Display Modules / LED Drivers / Display Drivers
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
Supply voltage range VIN 2.7 5.2 V ILED =350mA 4
Undervoltage lockout threshold VUVLO 2.3 2.5 2.7 V ILED =350mA, VIN decreasing 4
Output current range, external NMOS ILED 100 3000 mA External NMOS, VIN =3.6V 5
Output current range, internal NMOS ILED 10 1000 mA Internal NMOS, VIN =3.6V 5
Output current accuracy ΔILED/ILED -6 6 % ΔVO greater than 100mV 5
CS voltage VCS 47 50 53 mV Chip operating normally 5
Maximum voltage on VDD, DRV and CS pins VMAX 7 V VDD, DRV and CS pins 4
Maximum power dissipation SOT-89-5 PSOT-89-5 0.5 W SOT-89-5 package 4
Operating temperature range TA -20 85 °C 4
Storage temperature range TSTG -40 120 °C 4
Soldering temperature TSD 230 240 °C Time less than 30 seconds 4
ESD voltage (HBM) VESD 2000 V Human body model 4
Internal clamp voltage VZN 5.4 V 4
Quiescent current IDDQ 100 uA VIN =5.0V 4
Dropout voltage, external NMOS ΔVO 150 mV Output current 1.4A, external NMOS AP2306 4
Dropout voltage, internal NMOS ΔVO 100 mV Output current 350mA, internal NMOS 4
Over-temperature protection threshold TOTP 120 °C 4
Load regulation 2 mA/V VIN =3.6V, VLED from 0.2V to 3.0V 5
Line regulation 2 mA/V VIN from 3.0V to 5.0V 5

CAD (KiCad official)

  • Symbol: QX7136
  • Footprint: Package_TO_SOT_SMD:SOT-89-5
  • 3D model: SOT-89-5 (KiCad packages3D, STEP)
  • 3D model files: qx7136-etched.step / qx7136-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); qx7136.step / qx7136.glb are the bare package body.

Provenance

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

  • Datasheet: QX Micro Devices datasheet (8 pp, sha256 94222d6406d33cb6, retrieved 2026-10-22, 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-sonnet-5-5 (text), consensus claude-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).

Datasheet PDF