# OBGZ56COPA

**OB On Bright Elec** · AC-DC Controllers And Regulators · SOP-8

OBGZ56COPA from OB On Bright Elec, in a SOP-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 | FB | input | Voltage feedback input from the auxiliary winding through a resistor divider that reflects the output voltage; the internal reference Vref_fb is 2.475 V to 2.525 V (2.500 V typical), and the FB input voltage is rated -0.3 V to 7 V. |
| 2 | GND | power_in | Ground reference for the controller. |
| 3 | VDD | power_in | Power supply input with a recommended range of 5 V to 16 V and an absolute maximum of -0.3 V to 20 V; the UVLO thresholds are 13 V (exit) and 3.7 V (enter), and VDD over-voltage protection trips at 18 V typical. |
| 4 | CS | input | Current sense input from the external sense resistor Rs, which sets the constant-current point; the OCP threshold is 500 mV minimum to 555 mV maximum, and the CS input voltage is rated -0.3 V to 7 V. |
| 5 | C | power_out | High-voltage BJT collector pin, rated for 450 V collector-emitter (Vceo) and 750 V collector-base (Vcbo), with a collector current of 1.6 A. |
| 6 | C | power_out | High-voltage BJT collector pin, rated for 450 V collector-emitter (Vceo) and 750 V collector-base (Vcbo), with a collector current of 1.6 A. |
| 7 | C | power_out | High-voltage BJT collector pin, rated for 450 V collector-emitter (Vceo) and 750 V collector-base (Vcbo), with a collector current of 1.6 A. |
| 8 | C | power_out | High-voltage BJT collector pin, rated for 450 V collector-emitter (Vceo) and 750 V collector-base (Vcbo), with a collector current of 1.6 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | OB On Bright Elec |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VDD under voltage lockout exit | UVLO(OFF) | 12 | 13 | 14 | V |  | 5 |
| VDD under voltage lockout enter | UVLO(ON) | 3.5 | 3.7 | 3.9 | V |  | 5 |
| VDD over voltage protection | VDD_OVP | 17 | 18 | 19 | V |  | 5 |
| Max. Operating Voltage | VDD_max |  |  | 16 | V |  | 5 |
| Minimum over current threshold | Vth_ocp_min | 485 | 500 | 515 | mV |  | 5 |
| Maximum over current threshold | Vth_ocp_max |  |  | 555 | mV |  | 5 |
| Maximum Ton | Ton_max |  |  | 40 | us |  | 5 |
| Minimum Toff | Tpause_min | 2 |  |  | us |  | 5 |
| Minimum frequency | F_min | 450 | 500 | 550 | Hz |  | 5 |
| Maximum frequency | F_max |  |  | 90 | KHz |  | 5 |
| Maximum cable compensation current | Icomp_cable |  |  | 53 | uA |  | 5 |
| Reference voltage for feedback threshold | Vref_fb | 2.475 | 2.5 | 2.525 | V |  | 5 |
| Output Over voltage threshold | Vovp | 2.85 | 3 | 3.15 | V |  | 5 |
| Collector-emitter breakdown voltage | Vceo | 450 |  |  | V | Ic=10mA, Ib=0 | 5 |
| Collector-base breakdown voltage | Vcbo | 750 |  |  | V | Ic=10mA | 5 |
| Collect Current | Ic |  |  | 1.6 | A |  | 5 |
| Operation current without switching | I op |  | 0.77 | 1 | mA |  | 5 |
| Start up current | I start-up |  | 1 | 3 | uA | VDD=UVLO_OFF-1V | 5 |
| LEB time | TLEB |  | 0.33 |  | us |  | 5 |
| OCP propagation delay | Td_oc |  | 100 |  | ns |  | 5 |
| Over temperature protection trigger point | T_otp |  | 165 |  | ℃ |  | 5 |
| Over temperature protection recovery point | T_otp_rec |  | 130 |  | ℃ |  | 5 |
| CB Voltage |  |  |  | 750 | V |  | 2 |
| VDD Voltage | VDD | -0.3 |  | 20 | V |  | 2 |
| FB Input Voltage |  | -0.3 |  | 7 | V |  | 2 |
| CS Input Voltage |  | -0.3 |  | 7 | V |  | 2 |
| Min/Max Operating Junction Temperature | TJ | -40 |  | 150 | ℃ |  | 2 |
| Operating Ambient Temperature (listed in Absolute Maximum Ratings table) | TA | -20 |  | 85 | ℃ |  | 2 |
| Min/Max Storage Temperature | Tstg | -55 |  | 150 | ℃ |  | 2 |
| Lead Temperature (Soldering) |  |  |  | 260 | ℃ | Soldering, 10 secs | 2 |
| VDD Supply Voltage | VDD | 5 |  | 16 | V |  | 2 |
| Junction-to-ambient thermal resistance (package dissipation rating) | RθJA |  | 85 |  | ℃/W | SOP8 | 2 |
| Junction-to-case thermal resistance (package dissipation rating) | RθJC |  | 25 |  | ℃/W | SOP8 | 2 |

## CAD (KiCad official)

- Symbol: `OBGZ56COPA`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `obgz56copa-etched.step` / `obgz56copa-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `obgz56copa.step` / `obgz56copa.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [OB On Bright Elec datasheet](docs/obgz56copa-datasheet.pdf) (10 pp, sha256 `1b0fa275ce99acde`, retrieved 2026-10-17, 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/obgz56copa-datasheet.pdf)