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H7550-H#

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Shanghai Siproin Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3. Pinout settled in review by an AI reviewer against the manufacturer's datasheet, KiCad symbol/footprint/3D.

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h7550-h-etched.fit.json h7550-h: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
h7550-h-etched.glb h7550-h: rebuilt as a full factory component page (was a placeholder) · Ray
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H7550-H#

Shanghai Siproin Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3

H7550-H# from Shanghai Siproin Microelectronics, in a SOT-23-3. 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 GND power_in Ground.
2 VOUT power_out Regulated output.
3 VIN power_in Supply input.

Key specifications

Parameter Value
Manufacturer Shanghai Siproin Microelectronics
Package SOT-23-3
Category 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
Input voltage range VIN 4.75 40 V IOUT = 10mA 3
Output voltage (5.0V variant) △VOUT 4.9 5 5.1 V VIN = 12V, IOUT = 10mA 3
Quiescent current IQ 4 6 µA VIN = 7V, IOUT = 0 3
Quiescent current IQ 4.6 6.7 µA VIN = 24V, IOUT = 0 3
Quiescent current IQ 5.4 8.2 µA VIN = 40V, IOUT = 0 3
Dropout voltage VDROP 60 90 mV IOUT = 10mA 3
Dropout voltage VDROP 600 900 mV IOUT = 100mA 3
Line regulation △VLINE 0.02 0.03 %/V VIN = 7 ~ 24V, VOUT = 5V, IOUT = 1mA 3
Line regulation △VLINE 0.08 0.1 %/V VIN = 7 ~ 45V, VOUT = 5V, IOUT = 1mA 3
Load regulation △VLOAD 19 37 m VIN = 7V, IOUT = 1 ~ 100mA 3
Output noise voltage eNO -100 100 µVRMS 10Hz to 100kHz, COUT = 10 µF, IOUT = 10mA 3
Temperature coefficient ΔVO/ΔT -0.5 0.5 mV/℃ 3
Supply voltage -0.3 45 V 2
Operating temperature -40 85 ℃ 2
Storage temperature -50 125 ℃ 2
Thermal resistance, junction to ambient θJA 500 ℃/W SOT23; assume no ambient airflow, no heat sink 2
Power dissipation PD 0.2 W SOT23; Ta = 25℃ 2
Maximum output current IOUT_PK 190 m VIN = 12V, RL = 1Ω 3
Short current ISHORT 180 mA VOUT short to GND with 1Ω (1ms pulse), VIN = 40V 3
Power supply rejection rate PSRR 60 dB VIN = 10V, VPP = 0.5V, IOUT = 1mA, F = 100Hz 3
Power supply rejection rate PSRR 50 dB VIN = 10V, VPP = 0.5V, IOUT = 1mA, F = 1kHz 3
Power supply rejection rate PSRR 40 dB VIN = 10V, VPP = 0.5V, IOUT = 1mA, F = 10kHz 3
Thermal shutdown threshold TSD 165 ℃ VIN = 12V, IOUT = 1mA 3

CAD (KiCad official)

  • Symbol: H7550-H#
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: h7550-h-etched.step / h7550-h-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); h7550-h.step / h7550-h.glb are the bare package body.

Provenance

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

  • Datasheet: Shanghai Siproin Microelectronics datasheet (11 pp, sha256 942d23c6184c5e31, retrieved 2026-11-13, tier: manufacturer)
  • 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