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GM12045ARDZ-3.3-R7

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GONGMOSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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GM12045ARDZ-3.3-R7

GONGMOSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOIC-8

GM12045ARDZ-3.3-R7 from GONGMOSEMI, in a SOIC-8. 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 OUT power_out Regulated output pin; a ceramic capacitor of 10 µF or more must be placed between OUT and GND, as close to the pin as possible, for stability.
2 SENSE/ADJ input Feedback pin to the error amplifier; SENSE is used for fixed-output versions, while in the adjustable version the ADJ pin sits at 1.21 V relative to GND with an external output range of 1.21 V to 20 V.
3 GND power_in Ground pin.
4 NC unconnected Not connected.
5 SHDN input Shutdown pin: pulling it high enables the device and pulling it low disables it; if the enable function is not needed, it must be connected to IN.
6 GND power_in Ground pin.
7 GND power_in Ground pin.
8 IN power_in Input pin with an operating input voltage range of 1.9 V to 20 V; a ceramic input capacitor of 10 µF or more should be placed as close to the pin as possible to lower input impedance.

Key specifications

Parameter Value
Manufacturer GONGMOSEMI
Package SOIC-8
Category Power Management (PMIC)
Pins 8

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
IN UVLO rising threshold VUVLO_RISING 1.75 1.89 V VIN 上升 7
IN UVLO falling threshold VUVLO_FALLING 1.55 1.68 V VIN 下降 7
GND pin current IGND 0.9 1.7 mA ILOAD = 0mA 7
GND pin current IGND 1.4 2.2 mA ILOAD = 100mA 7
GND pin current IGND 1.9 2.9 mA ILOAD = 500mA 7
Shutdown current ISHUTDOWN 0.9 10 µA VIN = 6V, VSHDN = 0V, TJ = 25°C 7
Fixed output voltage accuracy VSENSE -2 2 % 最大值(VOUT + 0.5V, 1.9 V) < VIN < 20V, 1mA < ILOAD < 500mA 7
Input voltage regulation ΔVOUT_LINE 2 8 mV VIN = 最大值(VOUT + 0.5V, 1.9 V) to 20 V, ILOAD = 10mA 7
Load regulation ΔVOUT_LOAD 3 12 mV 1 mA ≤ IOUT ≤ 500 mA 7
Dropout voltage VDO 70 146 mV VIN = 3.3 V, IOUT = 100 mA, VFB = 0.5 V, 3% 7
Dropout voltage VDO 90 170 mV VIN = 3.3 V, IOUT = 500 mA, VFB = 0.5 V, 3% 7
SHDN pin low-level input voltage VSHDN_IL 0.49 0.75 V 7
SHDN pin high-level input voltage VSHDN_IH 0.79 1.1 V 7
SHDN pin current ISHDN 50 750 µA VIN = 20 V, TJ = 25°C 7
Output current limit ILIM 2.2 A VOUT 外加 0.9 × VOUT(nom), VIN = VOUT(nom) + 0.5 V 7
Power supply ripple rejection PSRR 81 dB f = 100 Hz, VOUT - VOUT = 1 V, ILOAD = 500 mA 7
Power supply ripple rejection PSRR 77 dB f = 10 kHz, VOUT - VOUT = 1 V, ILOAD = 500 mA 7
Output voltage noise VN 8.8 μVRMS 带宽 = 10 Hz to 100 kHz, IOUT = 500 mA 7
Thermal shutdown temperature TSD 155 °C 关机阈值，温度上升 7
Thermal shutdown hysteresis TSD_HYS 15 °C 开机阈值，温度下降 7
IN, SHDN pins to GND voltage -0.3 22 V 6
OUT pin to GND voltage -0.3 22 V 6
SENSE/ADJ pin to GND voltage -0.3 6 V 6
Storage temperature range -65 150 °C 6
Operating temperature range -40 125 °C 6
Junction-to-ambient thermal resistance, 8-pin SOIC θJA 67 °C/W 8 引脚 SOIC 6
Junction-to-ambient thermal resistance, JEDEC 51-7 four-layer board θJA 46.4 °C/W SOIC-8, JEDEC 51-7 高有效导热四层测试板, TA = 25°C 12
Input voltage operating range VIN 1.9 20 V 12
Output capacitor COUT 10 µF ESR ≤ 3Ω, X5R 或 X7R 电介质 (布局指南) 12
Maximum continuous operating junction temperature TJ 125 °C 连续运行 11

CAD (KiCad official)

  • Symbol: GM12045ARDZ-3.3-R7
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: gm12045ardz-3-3-r7-etched.step / gm12045ardz-3-3-r7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); gm12045ardz-3-3-r7.step / gm12045ardz-3-3-r7.glb are the bare package body.

Provenance

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

  • Datasheet: GONGMOSEMI datasheet (15 pp, sha256 31f8ffb5963aef61, retrieved 2026-10-19, 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