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XH2576-12
Public Made by Adomby adom
XINLUDA DC-DC Converters, TO-263-5. 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
markdownXH2576-12
XINLUDA · DC-DC Converters · TO-263-5
XH2576-12 from XINLUDA, in a TO-263-5. 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 | VIN | power_in | Supply input pin connected to the collector of the high-side transistor; connect to the power supply and input bypass capacitor CIN, keeping the path from VIN to CIN and GND as short as possible. |
| 2 | OUTPUT | output | Emitter of the power transistor and switching node; connect to the inductor and the cathode of the external catch diode. |
| 3 | GROUND | power_in | Ground pin; the path to CIN must be as short as possible, and on the TO-263 package this pin and the tab are both ground and either may be used. |
| 4 | FEEDBACK | input | Feedback sense input; connect to the midpoint of the feedback divider to set VOUT on the ADJ version, or directly to the output capacitor on fixed-output versions. |
| 5 | ON/OFF | input | Enable input where high = OFF and low = ON (device is in shutdown above 1.4 V and switching below 1.2 V); connect to GND to enable and do not leave it floating. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | XINLUDA |
| Package | TO-263-5 |
| Category | Power Management (PMIC) |
| Pins | 6 |
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 (12 V version) | VOUT | 11.76 | 12 | 12.24 | V | VIN = 25 V, ILOAD = 0.5 A | 4 |
| Output voltage (12 V version) | VOUT | 11.52 | 12 | 12.48 | V | 0.5 A ≤ ILOAD ≤ 3 A, 15 V ≤ VIN ≤ 40 V, TJ = 25°C | 4 |
| Output voltage (12 V version) | VOUT | 11.4 | 12.6 | V | 0.5 A ≤ ILOAD ≤ 3 A, 15 V ≤ VIN ≤ 40 V, applies over full operating temperature range | 4 | |
| Oscillator frequency | fO | 47 | 52 | 58 | kHz | TJ = 25°C | 5 |
| Oscillator frequency | fO | 42 | 52 | 63 | kHz | Applies over full operating temperature range | 5 |
| Saturation voltage | VSAT | 1.4 | 1.8 | V | IOUT = 3 A, TJ = 25°C | 6 | |
| Saturation voltage | VSAT | 2 | V | IOUT = 3 A, applies over full operating temperature range | 6 | ||
| Current limit | ICL | 4.2 | 5.8 | 6.9 | A | TJ = 25°C | 6 |
| Current limit | ICL | 3.5 | 7.5 | A | Applies over full operating temperature range | 6 | |
| Output leakage current | IL | 2 | 30 | mA | Output = 0 V; Output = −1 V (notes 6, 7) | 6 | |
| Quiescent current | IQ | 5 | 10 | mA | Feedback pin connected to +25 V (12-V version), output forced OFF (note 6) | 6 | |
| Standby quiescent current | ISTBY | 50 | 200 | μA | ON/OFF pin = 5 V (OFF) | 6 | |
| ON/OFF pin logic input high level | VIH | 2.2 | 1.4 | V | VOUT = 0 V, TJ = 25°C | 6 | |
| ON/OFF pin logic input high level | VIH | 2.4 | V | Applies over full operating temperature range | 6 | ||
| ON/OFF pin logic input low level | VIL | 1.2 | V | VOUT = nominal output voltage, TJ = 25°C | 6 | ||
| ON/OFF pin logic input low level | VIL | 0.8 | V | VOUT = nominal output voltage, applies over full operating temperature range | 6 | ||
| ON/OFF pin input current high | IIH | 12 | 30 | μA | ON/OFF pin = 5 V (OFF) | 6 | |
| ON/OFF pin input current low | IIL | 0 | 10 | μA | ON/OFF pin = 0 V (ON) | 6 | |
| Operating junction temperature range | -40 | 125 | °C | XH2576 recommended operating junction temperature range | 3 | ||
| Supply voltage | 40 | V | XH2576 | 3 | |||
| Maximum supply voltage | 45 | V | XH2576 | 3 | |||
| ON/OFF pin input voltage | -0.3 | V | −0.3 V ≤ V ≤ +VIN | 3 | |||
| Output voltage to ground (steady-state) | -1 | V | Steady-state | 3 | |||
| Maximum junction temperature | TJ | 150 | °C | 3 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| Junction-to-ambient thermal resistance | RθJA | 42.6 | °C/W | TO-263 package | 3 | ||
| Junction-to-case (top) thermal resistance | RθJC(top) | 43.3 | °C/W | TO-263 package | 3 | ||
| Junction-to-board thermal resistance | RθJB | 22.4 | °C/W | TO-263 package | 3 | ||
| Junction-to-case (bottom) thermal resistance | RθJC(bot) | 0.4 | °C/W | TO-263 package | 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 | copper | Figure 26 and Figure 32). For the TO-263 style package, both the tab and pin 3 are ground and either connection may be used, as they are both part of the same copper lead frame. 10.3 Heat Sink and The | 19 |
CAD (KiCad official)
- Symbol:
XH2576-12 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
xh2576-12-etched.step/xh2576-12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xh2576-12.step/xh2576-12.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: XINLUDA datasheet (22 pp, sha256
4de0ae504a7df7a4, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).