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LM2576R-15
Public Made by Adomby adom
HTC Korea TAEJIN Tech 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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README
markdownLM2576R-15
HTC Korea TAEJIN Tech · DC-DC Converters · TO-263-5
LM2576R-15 from HTC Korea TAEJIN Tech, 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 | Positive input supply for the LM2576 step-down switching regulator; a suitable input bypass capacitor (Cin) must be present to minimize voltage transients and supply the switching currents. |
| 2 | VOUT | power_out | Emitter of the internal output switch, with a typical saturation voltage VSAT of 1.5V; the PCB area connected to this pin should be kept to a minimum to reduce coupling to sensitive circuitry. |
| 3 | GND | power_in | Circuit ground pin; see the datasheet's printed circuit board layout information. |
| 4 | FEEDBACK | input | Senses the regulated output voltage to complete the feedback loop through the internal divider R2/R1 on fixed versions, and is the direct error-amplifier input with an external divider on the adjustable version. |
| 5 | ON/OFF | input | TTL-level shutdown input that drops total input supply current to approximately 80uA when driven above the typical 1.4V threshold (up to +Vin); a voltage below 1.4V or an open pin leaves the regulator on. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HTC Korea TAEJIN Tech |
| 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 (Vin = 25V, ILOAD=0.5A, TJ=25℃) | Vout | 14.7 | 15 | 15.3 | V | Vin = 25V, ILOAD=0.5A, TJ=25℃ | 6 |
| Output Voltage (18V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, TJ=25℃) | Vout | 14.4 | 15 | 15.6 | V | 18V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, TJ=25℃ | 6 |
| Output Voltage (18V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, TJ=-40℃ ~ +125℃) | Vout | 14.25 | 15.75 | V | 18V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, TJ=-40℃ to +125℃ | 6 | |
| Oscillator Frequency (TJ=25℃) | FOSC | 47 | 52 | 58 | kHz | TJ=25℃ | 7 |
| Oscillator Frequency (TJ=-40 to +125℃) | FOSC | 42 | 63 | kHz | TJ=-40 to +125℃ | 7 | |
| Max Duty Cycle ("0") | DC | 94 | 98 | % | Note 5: feedback removed from output and connected to 0V | 7 | |
| Current Limit (Peak Current, TJ=25℃) | ICL | 4.2 | 5.8 | 6.9 | A | TJ=25℃; Notes 3 and 4 | 7 |
| Current Limit (Peak Current, TJ=-40 to +125℃) | ICL | 3.5 | 7.5 | A | TJ=-40 to +125℃; Notes 3 and 4 | 7 | |
| Output Leakage Current (Output = 0V, TJ=25℃) | IL | 0.8 | 2 | mA | Output = 0V, TJ=25℃; Notes 6 and 7 | 7 | |
| Output Leakage Current (Output = -0.8V, TJ=25℃) | IL | 6 | 30 | mA | Output = -0.8V, TJ=25℃; Notes 6 and 7 | 7 | |
| Quiescent Current (TJ=25℃) | IQ | 5 | 9 | mA | TJ=25℃; Note 6 | 7 | |
| Quiescent Current (TJ=-40 to +125℃) | IQ | 11 | mA | TJ=-40 to +125℃; Note 6 | 7 | ||
| Standby Quiescent Current (ON/OFF Pin = 5.0V ("off"), TJ=25℃) | ISTBY | 80 | 200 | µA | ON/OFF Pin = 5.0V ("off"), TJ=25℃ | 7 | |
| Standby Quiescent Current (ON/OFF Pin = 5.0V ("off"), TJ=-40 to +125℃) | ISTBY | 400 | µA | ON/OFF Pin = 5.0V ("off"), TJ=-40 to +125℃ | 7 | ||
| Saturation Voltage (TJ=25℃) | VSAT | 1.5 | 1.8 | V | Iout=3.0A (output sourcing current, Note 4) | 7 | |
| Saturation Voltage (TJ=-40 to +125℃) | VSAT | 2 | V | Iout=3.0A (output sourcing current, Note 4), TJ=-40 to +125℃ | 7 | ||
| ON/OFF Pin Logic Input Level VIH (TJ=25℃) | VIH | 2.2 | 2.4 | V | Vout=0V, TJ=25℃ | 7 | |
| ON/OFF Pin Logic Input Level VIH (TJ=-40 to +125℃) | VIH | 1.4 | V | Vout=0V, TJ=-40 to +125℃ | 7 | ||
| ON/OFF Pin Logic Input Level VIL (TJ=25℃) | VIL | 1.2 | V | Vout=Nominal Output Voltage, TJ=25℃ | 7 | ||
| ON/OFF Pin Input Current IIH (ON/OFF Pin = 5.0V, Regulator OFF, TJ=25℃) | IIH | 15 | 30 | µA | ON/OFF Pin = 5.0V (Regulator OFF), TJ=25℃ | 7 | |
| ON/OFF Pin Input Current IIL (ON/OFF Pin = 0V, Regulator ON, TJ=25℃) | IIL | 0 | 0.5 | µA | ON/OFF Pin = 0V (Regulator ON), TJ=25℃ | 7 | |
| Maximum Supply Voltage | Vin | 45 | V | 5 | |||
| On/Off Pin Input Voltage | -0.3 | V | -0.3V ≤ V ≤ +Vin | 5 | |||
| Output Voltage to Ground (Steady-State) | -1 | V | Steady-state | 5 | |||
| Storage Temperature Range | TSTG | -60 | 150 | ℃ | 5 | ||
| Minimum ESD Rating (Human Body Model) | 2 | kV | Human Body Model, C=100 pF, R=1.5kΩ | 5 | |||
| Lead Temperature (Soldering, 10 seconds) | 260 | ℃ | Soldering, 10 seconds | 5 | |||
| Maximum Junction Temperature | TJ | 150 | ℃ | 5 | |||
| Operating Junction Temperature Range | TJ | -40 | 125 | ℃ | 5 | ||
| Supply Voltage | Vin | 40 | V | 5 | |||
| Thermal Resistance, Junction to Ambient (TO-263-5L) | θJA | 70 | ℃/W | TO-263-5L package | 5 | ||
| Thermal Resistance, Junction to Case (TO-263-5L) | θJC | 5 | ℃/W | TO-263-5L package | 5 |
CAD (KiCad official)
- Symbol:
LM2576R-15 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files:
lm2576r-15-etched.step/lm2576r-15-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm2576r-15.step/lm2576r-15.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HTC Korea TAEJIN Tech datasheet (12 pp, sha256
5415e08b03e8a2ce, 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).