# LM2576DP-5.0

**HTC Korea TAEJIN Tech** · DC-DC Converters · ESOP-8

LM2576DP-5.0 from HTC Korea TAEJIN Tech, in a ESOP-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 | VIN | power_in | Positive input supply for the step-down switching regulator, which needs a suitable input bypass capacitor (Cin) to minimize voltage transients and supply switching currents. |
| 2 | VOUT | output | Emitter of the internal output switch with a typical saturation voltage VSAT of 1.5V; the PCB area on this pin should be kept to a minimum to reduce coupling to sensitive circuitry. |
| 3 | FEEDBACK | input | Senses the regulated output voltage to complete the feedback loop; on the adjustable version it is the direct input of the error amplifier, with R2/R1 connected externally to set the output voltage. |
| 4 | ON/OFF | input | Logic-level shutdown input: a voltage above the typical 1.4V threshold (up to +Vin) turns the regulator off, while a voltage below 1.4V or an open pin leaves it on. |
| 5 | N.C. | unconnected | No connect. |
| 6 | GND | power_in | Circuit ground pin; see the datasheet's printed circuit board layout information. |
| 7 | N.C. | unconnected | No connect. |
| 8 | N.C. | unconnected | No connect. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HTC Korea TAEJIN Tech |
| Package | ESOP-8 |
| Category | Power Management (PMIC) |
| Pins | 9 |

## 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 = 12V, ILOAD=0.5A, TJ=25℃) | Vout | 4.9 | 5 | 5.1 | V | Vin = 12V, ILOAD=0.5A, TJ=25℃ | 6 |
| Output Voltage (8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A), TJ=25℃ | Vout | 4.8 | 5 | 5.2 | V | 8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, TJ=25℃ | 6 |
| Output Voltage (8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A), TJ=-40℃ ~ +125℃ | Vout | 4.75 |  | 5.25 | V | 8.0V≤Vin≤40V, 0.5A≤ILOAD≤3.0A, TJ=-40℃ ~ +125℃ | 6 |
| Oscillator Frequency | FOSC | 47 |  | 58 | kHz | TJ=0 to +125℃ [Note 3] | 7 |
| Oscillator Frequency | FOSC | 42 |  | 63 | kHz | TJ=-40 to +125℃ [Note 3] | 7 |
| Current Limit (Peak Current) | ICL | 4.2 | 5.8 | 6.9 | A | TJ=25℃ [Note 3 and 4] | 7 |
| Current Limit (Peak Current) | ICL | 3.5 |  | 7.5 | A | TJ=-40 to +125℃ [Note 3 and 4] | 7 |
| Saturation Voltage | VSAT |  | 1.8 | 2 | V | Iout=3.0A [Note 4], TJ=-40 to +125℃ | 7 |
| Max Duty Cycle ("0") | DC | 94 | 98 |  | % | Feedback removed from output and connected to 0V [Note 5] | 7 |
| Output Leakage Current | IL |  | 0.8 | 50 | mA | TJ=25℃, Output = 0V [Note 6 and 7] | 7 |
| Output Leakage Current | IL |  | 6 | 30 | mA | TJ=25℃, Output = -1.0V [Note 6 and 7] | 7 |
| Quiescent Current | IQ |  | 5 | 9 | mA | TJ=25℃ [Note 6] | 7 |
| Quiescent Current | IQ |  |  | 11 | mA | TJ=-40 to +125℃ [Note 6] | 7 |
| Standby Quiescent Current (ON/OFF Pin = 5.0V ("off")) | ISTBY |  | 80 | 200 | µA | ON/OFF Pin = 5.0V ("off"), TJ=25℃ | 7 |
| Standby Quiescent Current (ON/OFF Pin = 5.0V ("off")) | ISTBY |  |  | 400 | µA | ON/OFF Pin = 5.0V ("off"), TJ=-40 to +125℃ | 7 |
| ON/OFF Pin Logic Input Level (high) | VIH | 2.2 | 1.4 |  | V | Vout=0V, TJ=25℃ (Test circuit Figure 15) | 7 |
| ON/OFF Pin Logic Input Level (high) | VIH | 2.4 |  |  | V | Vout=0V, TJ=-40 to +125℃ (Test circuit Figure 15) | 7 |
| ON/OFF Pin Logic Input Level (low) | VIL |  | 1.2 | 1 | V | Vout=Nominal Output Voltage, TJ=25℃ (Test circuit Figure 15) | 7 |
| ON/OFF Pin Logic Input Level (low) | VIL |  |  | 0.8 | V | Vout=Nominal Output Voltage, TJ=-40 to +125℃ (Test circuit Figure 15) | 7 |
| ON/OFF Pin Input Current (high) | IIH |  | 15 | 30 | µA | ON/OFF Pin = 5.0V (Regulator OFF), TJ=25℃ | 7 |
| ON/OFF Pin Input Current (low) | 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 |

## CAD (KiCad official)

- Symbol: `LM2576DP-5.0`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files: `lm2576dp-5-0-etched.step` / `lm2576dp-5-0-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2576dp-5-0.step` / `lm2576dp-5-0.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HTC Korea TAEJIN Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586199463970529281) (11 pp, sha256 `2acb3c8a94295de6`, retrieved 2026-10-09, tier: lcsc)
- **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](docs/lm2576dp-5-0-datasheet.pdf)