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HT7350-AQ

QNH · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

HT7350-AQ from QNH, in a SOT-89. 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 VSS power_in Ground reference pin for the regulator (SOT89-3 pin 1 per the pin function table).
2 VIN power_in Regulator input pin; the absolute maximum input voltage is 18 V.
3 VOUT power_out Regulated output pin; absolute maximum output current is 500 mA and the output pin voltage must stay between Vss-0.3 V and VIN+0.3 V.

Key specifications

Parameter Value
Manufacturer QNH
Package SOT-89
Category Power Management (PMIC)
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output voltage (VOUT(E), HT73XXA50 5.0V version) VOUT(E) 0.99 1.01 x VOUT(T) IOUT=10mA, VIN=Vout+1V; min/max are factors multiplied by the specified VOUT(T) (5.0V nominal per selection guide) 9
Input voltage Vin 18 V 9
Load regulation ΔVOUT 40 mV VIN=Vout+1V, 1mA≤IOUT≤60mA 9
Quiescent current ISS 5 μA VIN=Vout+1V 9
Line regulation ΔVOUT/ΔVIN 0.2 %/V IOUT=10mA, Vout+1V≤VIN≤18V 9
Output voltage temperature coefficient ΔVOUT/ΔTa -0.7 0.7 mV/℃ Vin=[Vout+1]V, IOUT=10mA, -40℃<Ta<85℃ 9
Input voltage (absolute maximum) Vin 18 V 5
Output current (absolute maximum) Iout 500 mA 5
Vout pin voltage Vout -0.3 0.3 V Printed as VSS-0.3 to VIN+0.3 (min offset relative to VSS, max offset relative to VIN) 5
Power dissipation Pd 1.25 W SOT89-3 package 5
Operating ambient temperature range TOpr -40 85 ºC 5
Storage temperature range Tstg -55 150 ºC 5
Junction temperature range TJ -40 150 ºC 5
Thermal resistance, junction to ambient θJA 100 ºC/W SOT89-3 package 5

CAD (KiCad official)

  • Symbol: HT7350-AQ
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: ht7350-aq-etched.step / ht7350-aq-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ht7350-aq.step / ht7350-aq.glb are the bare package body.

Provenance

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

  • Datasheet: QNH datasheet (14 pp, sha256 baeab6f401ec96e0, retrieved 2026-10-18, 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-haiku-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