component

UM1770Y-00

Public Made by Adom

by adom

Union Semiconductor Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)um1770y-00factory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
um1770y-00 / README.md
History Download
Ray Publish 0.1.0 d333f0f 16d ago

UM1770Y-00

Union Semiconductor · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-5

UM1770Y-00 from Union Semiconductor, 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 FB input Output voltage feedback input; the output is set by an external resistor divider referenced to the 1.00V (typ) internal reference VFB, with the adjustable -00 option spanning 1.0V to 5.0V, and FB absolute maximum is -0.3 to +7.5V.
2 GND power_in Ground and heat sink; solder to a ground plane or large pad to maximize heat dissipation, as the package tab is electrically connected to GND.
3 SHDN input Shutdown control input that must not be left floating and must be tied to VIN if unused, with VIH minimum 2.0V and VIL maximum 0.4V for 2.5V ≤ VIN ≤ 6.0V and an absolute maximum of -0.3 to +7.5V.
4 VIN power_in Supply input for the regulator and load, specified from 2.5V to 6.0V with an absolute maximum of -0.3 to +7.5V, and locally bypassed to ground if far from other bulk capacitance.
5 VOUT power_out Voltage regulated output that supplies the load with up to 500mA and requires a minimum 1µF output capacitor for stability.

Key specifications

Parameter Value
Manufacturer Union Semiconductor
Package SOT-89-5
Category Power Management (PMIC)
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
Input Voltage Range VIN 2.5 6 V 7
Input Under Voltage Lockout VUVLO 1.8 2.4 V VIN Falling 7
Operating Quiescent Current IQ 92 140 μA VIN=4.2V, IOUT=0mA 7
Operating Quiescent Current IQ 250 300 μA VIN=4.2V, IOUT=500mA 7
Shutdown Leakage Current ISHDN 1 μA 7
Output Current IOUT 500 mA 7
Output Voltage Accuracy -2 2 % 1mA≤IOUT≤500mA, TA=-25°C 7
Dropout Voltage ΔVDO 220 320 mV IOUT=500mA, 2.5V≤VOUT 7
Output Current Limit ILIMT 700 mA VIN≥2.5V 7
Input Low Voltage (SHDN) VIL 0.4 V 2.5V≤VIN≤6.0V 7
Input High Voltage (SHDN) VIH 2 V 2.5V≤VIN≤6.0V 7
SHDN Input Current -1 1 μA SHDN=VIN or GND 7
Thermal-Shutdown Temperature TSHDN 160 °C 7
Thermal-Shutdown Hysteresis ΔTSHDN 25 °C 7
Line Regulation 0.09 %/V VOUT+1V≤VIN≤6.0V (2.5V≤VIN), IOUT=10mA 7
Load Regulation 0.2 % VIN=VOUT+1V (2.5V≤VIN), 1mA≤IOUT≤500mA 7
Startup Time t 40 μs RL=68Ω, COUT=1μF 7
Feedback Reference Voltage VFB 1 V 11
Output Voltage Noise (Adjustable, VOUT=1.0V) 60 μVRMS 10Hz to 100kHz, CIN=1.0μF, IOUT=100mA, Adjustable Output, VOUT=1.0V 7
Output Voltage Noise (Adjustable, VOUT=3.3V) 194 μVRMS 10Hz to 100kHz, CIN=1.0μF, IOUT=100mA, Adjustable Output, VOUT=3.3V 7
Output Voltage Noise (Adjustable, VOUT=5.0V) 305 μVRMS 10Hz to 100kHz, CIN=1.0μF, IOUT=100mA, Adjustable Output, VOUT=5.0V 7
Power Supply Ripple Rejection PSRR 65 dB VIN=VOUT+1V, IOUT=10mA, f=100Hz 7
Power Supply Ripple Rejection PSRR 60 dB VIN=VOUT+1V, IOUT=10mA, f=1kHz 7
Power Supply Ripple Rejection PSRR 45 dB VIN=VOUT+1V, IOUT=10mA, f=10kHz 7
Supply Voltage on VIN Pin VIN -0.3 7.5 V 6
Voltage on SHDN Pin VSHDN -0.3 7.5 V 6
Voltage on VOUT Pin VOUT -0.3 7.5 V 6
Voltage on FB Pin VFB -0.3 7.5 V 6
Operating Junction Temperature TJ -40 125 °C 6
Storage Temperature Range TSTG -65 150 °C 6
Lead Temperature for Soldering TL 300 °C 10 Seconds 6
Power Dissipation (SOT89-5) PD 1.5 W @ 25°C 6
Package Thermal Resistance (SOT89-5) θJA 66 °C/W 6

CAD (KiCad official)

  • Symbol: UM1770Y-00
  • Footprint: Package_TO_SOT_SMD:SOT-89-5
  • 3D model: SOT-89-5 (KiCad packages3D, STEP)
  • 3D model files: um1770y-00-etched.step / um1770y-00-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); um1770y-00.step / um1770y-00.glb are the bare package body.

Provenance

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

  • Datasheet: Union Semiconductor datasheet (14 pp, sha256 d70c75382042de61, retrieved 2026-10-19, tier: lcsc)
  • 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