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ZLDO1117QG12TA
Public Made by Adomby adom
Diodes Incorporated Linear Voltage Regulators (LDO), SOT-223. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownZLDO1117QG12TA
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);zldo1117qg12ta.step/zldo1117qg12ta.glbare 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, primaryclaude-sonnet-5-5(text), consensusclaude-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).