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ZLDO1117QG12TA

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Diodes Incorporated Linear Voltage Regulators (LDO), SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ZLDO1117QG12TA

Diodes Incorporated · Linear Voltage Regulators (LDO) · SOT-223

ZLDO1117QG12TA from Diodes Incorporated, in a SOT-223. 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 ADJ/GND power_in Ground reference for the fixed-output 1.2V ZLDO1117Q-12 (a resistor divider from this pin to VOUT and ground sets the output only in the adjustable version).
2 VOUT power_out Regulator output, which needs at least a 4.7µF capacitor (0.05Ω ≤ ESR ≤ 0.5Ω) to ground for stability; the tab is also connected to VOUT.
3 VIN power_in Regulator input (2.7V to 18V recommended operating range), which must always be 1.3V higher than VOUT for regulation and should have a storage capacitor (0.05Ω ≤ ESR ≤ 0.5Ω) to ground.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-223
Category Power Supply Chip
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 1.188 1.2 1.212 V IO = 10mA, VIN = 3.2V, TJ = +25°C 4
Output Voltage (full temp) VOUT 1.176 1.224 V 10mA < IO < 1A, 2.7V < VIN < 12V, FT 4
Line Regulation 0.1 % IO = 10mA, VOUT + 1.5V < VIN < 12V, TJ = +25°C 4
Line Regulation (full temp) 0.2 % IO = 10mA, VOUT + 1.5V < VIN < 12V, FT 4
Load Regulation 0.2 % VIN = 2.7V, 10mA < IO < 1A, TJ = +25°C 4
Load Regulation (full temp) 0.4 % VIN = 2.7V, 10mA < IO < 1A, FT 4
Dropout Voltage VIN - VOUT 1.11 1.2 V IO = 1A, ΔVOUT = 1%VOUT, TJ = +25°C 4
Current Limit 1.1 A (VIN - VOUT) = 5V, FT 4
Minimum Load Current 2 5 mA VIN = < 18V, FT 4
Quiescent Current IQ 4 10 mA VIN < 18V, IO = 0mA, FT 4
GND Current 35 120 µA VIN = 7V, FT 4
Thermal Regulation 0.1 %/W 30ms pulse, +25°C 4
Ripple Rejection 60 80 dB VIN = VOUT + 3V, f = 120Hz, COUT = 25µF Tantalum, IOUT = 100mA, +25°C 4
Temperature Stability 0.5 % IO = 10mA 4
Input Supply Voltage VIN -0.03 18 V Relative to Ground 2
Junction Temperature TJ 150 °C 2
Storage Temperature TST -65 150 °C 2
ESD HBM HBM 4000 V Human Body Model 2
ESD MM MM 400 V Machine Model 2
ESD CDM CDM 1000 V Charged Device Model 2
Input Voltage VIN 2.7 18 V Note 5 3
Output Current IO 0.01 1 A 3
Operating Junction Temperature Range TJ -40 125 °C Notes 6, 7 3
Operating Ambient Temperature Range TA -40 105 °C Notes 7, 8 3
Junction-to-Ambient Thermal Resistance θJA 107 °C/W SOT223, TA = +27°C, no air flow, 2" x 2" polyimide PCB, 2oz copper, 5.6mm x 5.6mm pad 3
Junction-to-Case Thermal Resistance θJC 16 °C/W SOT223 3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin • Terminals: Finish: Matte Tin Plated Leads, Solderable per M2003 JESD22-B102 • Weight: 13

CAD (KiCad official)

  • Symbol: ZLDO1117QG12TA
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: zldo1117qg12ta-etched.step / zldo1117qg12ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); zldo1117qg12ta.step / zldo1117qg12ta.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (14 pp, sha256 52a05840bdb17cd6, retrieved 2026-10-23, tier: manufacturer)
  • 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