# BM1P067FJ-E2

**ROHM Semicon** · AC-DC Controllers & Regulators · SOIC-8

BM1P067FJ-E2 from ROHM Semicon, in a SOIC-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 | N.C | unconnected | Non-connection pin with no internal connection, per the pin table. |
| 2 | FB | input | Feedback signal input pin, with an internal pull-up of 22 kΩ to 38 kΩ (30 kΩ typ.). |
| 3 | CS | input | Primary current sense pin; overcurrent detection voltage is 0.380 V to 0.420 V (0.400 V typ.) at Ton = 0 µs, with 250 ns typ. leading edge blanking. |
| 4 | GND | power_in | Ground pin for the IC, listed as I/O in the datasheet pin table and carrying the ESD diode to GND only. |
| 5 | OUT | output | External MOS drive pin that drives the external switching MOSFET. |
| 6 | VCC | power_in | Power supply input pin; the stated operating supply range is 8.9 V to 26.0 V, and the block diagram shows VCC overvoltage protection at 27.5 V. |
| 7 | N.C. | unconnected | Non-connection pin with no internal connection, per the pin table. |
| 8 | VH | input | Start circuit pin; VH is rated up to 600 V and the built-in start circuit withstands 650 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | SOIC-8 |
| Category | Power Management |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage range 1 | VCC | 8.9 |  | 26 | V | VCC pin voltage | 2 |
| Supply voltage range 2 | VH | 80 |  | 600 | V | VH pin voltage | 2 |
| Maximum voltage 1 | Vmax1 | -0.3 |  | 30 | V | VCC | 2 |
| Maximum voltage 2 | Vmax2 | -0.3 |  | 6.5 | V | CS, FB, ACMONI | 2 |
| Maximum voltage 3 | Vmax3 | -0.3 |  | 15 | V | OUT | 2 |
| Maximum voltage 4 | Vmax4 | -0.3 |  | 650 | V | VH | 2 |
| OUT pin peak current | IOUT | -1 |  | 1 | A |  | 2 |
| Allowable dissipation | Pd |  |  | 674.9 | mW | When mounted (70x70x1.6 mm glass epoxy single-layer board); reduce to 5.40 mW/°C at Ta of 25°C or above | 2 |
| Operating temperature range | Topr | -40 |  | 85 | °C |  | 2 |
| Storage temperature range | Tstr | -55 |  | 150 | °C |  | 2 |
| Circuit current (ON) 1 (during pulse operation) | ION1 |  | 600 | 1000 | μA | FB = 2.0 V | 2 |
| Circuit current (ON) 2 (during burst operation) | ION2 |  | 350 | 450 | μA | FB = 0.0 V | 2 |
| VCC UVLO voltage 1 | VUVLO1 | 12.5 | 13.5 | 14.5 | V | VCC rise | 2 |
| VCC UVLO voltage 2 | VUVLO2 | 7.5 | 8.2 | 8.9 | V | VCC drop | 2 |
| VCC OVP voltage 1 | VOVP1 | 26 | 27.5 | 29 | V | VCC rise | 2 |
| OUT pin H voltage | VOUTH | 10.5 | 12.5 | 14.5 | V | IO = -20 mA | 2 |
| OUT pin L voltage | VOUTL |  |  | 1 | V | IO = +20 mA | 2 |
| OUT pin pull-down resistance | RPDOUT | 75 | 100 | 125 | kΩ |  | 2 |
| Start current 1 | ISTART1 | 0.4 | 0.7 | 1 | mA | VCC = 0 V | 2 |
| Start current 2 | ISTART2 | 1 | 3 | 5 | mA | VCC = 10 V | 2 |
| OFF current | ISTART3 |  | 10 | 20 | uA | Inflow current from VH pin after release of UVLO | 2 |
| Start current switching voltage | VSC | 0.4 | 0.8 | 1.4 | V |  | 2 |
| Oscillation frequency 1a | FSW1a | 60 | 65 | 70 | kHz | FB = 2.00 V average frequency | 3 |
| Hopping fluctuation frequency | FCH | 75 | 125 | 175 | Hz |  | 3 |
| Soft start time 1 | TSS1 | 0.3 | 0.5 | 0.7 | ms |  | 3 |
| Soft start time 2 | TSS2 | 0.6 | 1 | 1.4 | ms |  | 3 |
| Soft start time 3 | TSS3 | 1.2 | 2 | 2.8 | ms |  | 3 |
| Soft start time 4 | TSS4 | 2.4 | 4 | 5.6 | ms |  | 3 |
| Maximum duty | Dmax | 68 | 75 | 82 | % |  | 3 |
| FB pin pull-up resistance | RFB | 22 | 30 | 38 | kΩ |  | 3 |
| FB burst voltage 1 | VBST1 | 0.3 | 0.4 | 0.5 | V | FB drop | 3 |
| FB burst voltage 2 | VBST2 | 0.35 | 0.45 | 0.55 | V | FB rise | 3 |
| FBOLP voltage 1a | VFOLP1A | 2.6 | 2.8 | 3 | V | When overload is detected (FB rise) | 3 |
| FBOLP detection timer | TFOLP | 44 | 64 | 84 | ms |  | 3 |
| Overcurrent detection voltage | VCS | 0.38 | 0.4 | 0.42 | V | Ton = 0 us | 3 |
| Overcurrent detection AC compensation factor | KCS | 12 | 20 | 28 | mV/us |  | 3 |

## CAD (KiCad official)

- Symbol: `BM1P067FJ-E2`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `bm1p067fj-e2-etched.step` / `bm1p067fj-e2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bm1p067fj-e2.step` / `bm1p067fj-e2.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ROHM Semicon datasheet](docs/bm1p067fj-e2-datasheet.pdf) (29 pp, sha256 `b13525251d9c700b`, retrieved 2026-10-29, tier: manufacturer)
- **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/bm1p067fj-e2-datasheet.pdf)