# CBM2576HVS-ADJ

**Corebai Microelectronics** · DC-DC Converters · TO-263-5

CBM2576HVS-ADJ from Corebai Microelectronics, 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 | Unregulated supply input for the regulator and internal circuitry, operating range up to 60V (absolute maximum 63V). |
| 2 | OUTPUT | output | Emitter of the internal 3A switching transistor that drives the external inductor and catch diode, with 4.2A to 6.9A current limit at 25°C. |
| 3 | GND | power_in | Ground reference for the regulator. |
| 4 | FB | input | Feedback input that senses the output voltage through an external divider and regulates to a 1.23V reference (1.217V to 1.243V at 25°C) in the adjustable version. |
| 5 | ON/OFF | input | Active-low TTL shutdown input: below 1.0V (max) at 25°C switches the regulator on, above 2.2V (min) switches it off into low-power standby, with an absolute maximum of +25V. |
| 6 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Corebai Microelectronics |
| Package | TO-263-5 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Feedback bias current | IB |  |  | 100 | nA | VFB = 1.3V; VIN = 12V; TA = 25±10°C | 5 |
| Feedback bias current | IB |  |  | 500 | nA | VFB = 1.3V; VIN = 12V; TA = 125°C (junction, *) | 5 |
| Oscillator frequency | fOSC | 47 |  | 58 | kHz | VIN = 12V; TA = 25±10°C | 5 |
| Oscillator frequency | fOSC | 42 |  | 63 | kHz | VIN = 12V; TA = -40 to 125°C | 5 |
| Saturation voltage | VSAT |  |  | 1.8 | V | VFB = 0V; VIN = 12V; IOUT = 3A; no external circuit; TA = 25±10°C (inferred) | 5 |
| Saturation voltage | VSAT |  |  | 2 | V | VFB = 0V; VIN = 12V; IOUT = 3A; no external circuit; TA = -40 to 125°C (inferred) | 5 |
| Current limit | ICL | 4.2 |  | 6.9 | A | VFB = 0V; VIN = 12V; 3A ≤ IOUT ≤ 8A; no external circuit; TA = 25±10°C | 5 |
| Current limit | ICL | 3.5 |  | 7.5 | A | VFB = 0V; VIN = 12V; 3A ≤ IOUT ≤ 8A; no external circuit; TA = -40 to 125°C | 5 |
| Output leakage current | IL(O) |  |  | 2 | mA | VFB = 12V; VIN = 60V; VOUT = 0V; no external circuit | 5 |
| Output leakage current | IL(-1) |  |  | 30 | mA | VFB = 12V; VIN = 60V; VOUT = -1V; no external circuit | 5 |
| Quiescent current | IQ |  |  | 10 | mA | VFB = 12V; VIN = 12V | 5 |
| Standby quiescent current | ISTBY |  |  | 200 | uA | VFB = 0V; VIN = 60V; VON/OFF = 5V | 5 |
| ON/OFF pin low level input voltage (switch on) | VIL |  |  | 1 | V | VFB = 0V; VIN = 12V; TA = 25±10°C (inferred) | 5 |
| ON/OFF pin low level input voltage (switch on) | VIL |  |  | 0.8 | V | VFB = 0V; VIN = 12V; TA = -40 to 125°C (inferred) | 5 |
| ON/OFF pin high level input voltage (switch off) | VIH | 2.2 |  |  | V | TA = 25±10°C (inferred) | 5 |
| ON/OFF pin high level input voltage (switch off) | VIH | 2.4 |  |  | V | TA = -40 to 125°C (inferred) | 5 |
| ON/OFF pin high level input current (switch off) | IIH |  |  | 30 | uA | VFB = 0V; VIN = 12V; VON/OFF = 5V; TA = 25±10°C | 5 |
| ON/OFF pin low level input current (switch on) | IIL |  |  | 10 | uA | VFB = 0V; VIN = 12V; VON/OFF = 0V | 5 |
| Feedback voltage | VFB | 1.217 |  | 1.243 | V | VIN = 12V; ILOAD = 0.5A; VOUT = 5V | 5 |
| Feedback voltage | VFB | 1.193 |  | 1.273 | V | 8V ≤ VIN ≤ 60V; 0.5A ≤ ILOAD ≤ 3A; VOUT = 5V; TA = 25±10°C | 5 |
| Feedback voltage | VFB | 1.18 |  | 1.286 | V | 8V ≤ VIN ≤ 60V; 0.5A ≤ ILOAD ≤ 3A; VOUT = 5V; TA = -40 to 125°C | 5 |
| Operating junction temperature range | TJ | -40 |  | 125 | °C |  | 4 |
| Supply voltage | VIN |  |  | 60 | V |  | 4 |
| Maximum supply voltage | VIN |  |  | 63 | V |  | 4 |
| ON/OFF pin input voltage | VON/OFF | -0.3 |  | 25 | V |  | 4 |
| Output voltage to ground (steady-state) |  | -0.1 |  |  | V | steady-state | 4 |
| ESD rating (Human Body Model) |  | 2 |  |  | kV | Human Body Model: C=100pF, R=1.5kΩ | 4 |
| Lead temperature (soldering, 10 seconds) |  |  |  | 260 | °C | soldering, 10 seconds | 4 |
| Maximum junction temperature | TJ |  |  | 150 | °C |  | 4 |
| Thermal resistance, junction-to-ambient, TO-263-5 (D2PAK) | RθJA |  | 70 |  | °C/W | TO-263, 5-Lead (D2PAK) | 4 |
| Thermal resistance, junction-to-case, TO-263-5 (D2PAK) | RθJC |  | 5 |  | °C/W | TO-263, 5-Lead (D2PAK) | 4 |

## CAD (KiCad official)

- Symbol: `CBM2576HVS-ADJ`
- Footprint: `Package_TO_SOT_SMD:TO-263-5_TabPin6`
- 3D model: TO-263-5 (KiCad packages3D, STEP)
- 3D model files: `cbm2576hvs-adj-etched.step` / `cbm2576hvs-adj-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cbm2576hvs-adj.step` / `cbm2576hvs-adj.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Corebai Microelectronics datasheet](docs/cbm2576hvs-adj-datasheet.pdf) (17 pp, sha256 `478a28d1e280025c`, retrieved 2026-11-05, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/cbm2576hvs-adj-datasheet.pdf)