# BD4269EFJ-CE2

**ROHM Semicon** · Linear Voltage Regulators (LDO) · ESOP-8

BD4269EFJ-CE2 from ROHM Semicon, 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 | VCC | power_in | Supply voltage input for the regulator. |
| 2 | SI | input | Sense input for the input voltage reset; if not needed, connect to VO. |
| 3 | RADJ | input | Threshold adjust for the power on and under-voltage reset; if not needed, connect to GND. |
| 4 | CT | passive | Delay pin for the power on and under-voltage reset; connect a capacitor to GND to set the delay time. |
| 5 | GND | power_in | Ground reference for the device. |
| 6 | RO | output | Power on and under-voltage reset output; open-collector, internally pulled up to VO via a 24 kΩ resistor, keep open if not needed. |
| 7 | SO | output | Input voltage reset output; open-collector, internally pulled up to VO via a 24 kΩ resistor, keep open if not needed. |
| 8 | VO | power_out | 5 V regulated output. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | ESOP-8 |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| Circuit current | ICC |  | 70 | 150 | μA | IO = 0 mA to 200 mA | 6 |
| Output voltage | VQ | 4.9 | 5 | 5.1 | V | 1 mA ≤ IO ≤ 100 mA; 6 V ≤ VCC ≤ 16 V | 6 |
| Dropout voltage | ∆Vd |  | 0.25 | 0.5 | V | VCC = 4.75 V, IO = 100 mA | 6 |
| Load regulation | Reg.L |  | 10 | 30 | mV | IO = 10 mA to 100 mA | 6 |
| Line regulation | Reg.I |  | 10 | 30 | mV | VCC = 8 V to 16 V, IO = 1 mA | 6 |
| Current limit (BD4269EFJ-C) | IOCP | 300 |  |  | mA |  | 6 |
| Thermal shut down temperature | TTSD |  | 175 |  | °C |  | 6 |
| Power on and under-voltage reset switching threshold | VRT | 4.5 | 4.62 | 4.74 | V |  | 6 |
| Power on and under-voltage reset switching hysteresis | VRHY | 20 | 60 | 100 | mV |  | 6 |
| RADJ switching threshold | VRADJ,TH | 0.776 | 0.8 | 0.824 | V | 3.5 V ≤ Vo ≤ 4.5 V | 6 |
| RADJ input current | IRADJ | -1 | 0 | 1 | μA | VRADJ = 2 V | 6 |
| RO pull-up resistance | RRO | 10 | 24 | 40 | kΩ |  | 6 |
| CT threshold high | VCTH |  | 1.2 |  | V |  | 6 |
| CT threshold low | VCTL |  | 0.25 |  | V |  | 6 |
| CT charge current | ICT | 5 | 12 | 20 | μA | VCT = 0.5 V | 6 |
| Delay time L to H (Power On Reset Time) | TDLH | 17 | 22 | 28 | ms | CCT = 0.22 μF (Note 1) | 6 |
| SI threshold high | VSIH | 0.8 | 0.87 | 0.94 | V |  | 6 |
| SI threshold low | VSIL | 0.75 | 0.8 | 0.85 | V |  | 6 |
| SO pull-up resistance | Rso | 10 | 24 | 40 | kΩ |  | 6 |
| SI input current | ISI | -1 | 0 | 1 | μA | VSI = 2 V | 6 |
| VCC input voltage (absolute maximum) | VCC | -0.3 |  | 45 | V | Not to exceed Pd | 4 |
| RADJ input voltage (absolute maximum) | VRADJ | -0.3 |  | 7 | V | ≤ VO +0.3 | 4 |
| RO input voltage (absolute maximum) | RO | -0.3 |  | 7 | V | ≤ VO +0.3 | 4 |
| VO input voltage (absolute maximum) | VO | -0.3 |  | 7 | V | ≤ VO +0.3 | 4 |
| SO input voltage (absolute maximum) | SO | -0.3 |  | 7 | V | ≤ VO +0.3 | 4 |
| SI input voltage (absolute maximum) | VSI | -0.3 |  | 45 | V | ≤ VCC +0.3 | 4 |
| Power dissipation (HTSOP-J8) | Pd |  |  | 0.96 | W | Note 3 | 4 |
| Junction temperature range | Tj | -40 |  | 150 | °C |  | 4 |
| Storage temperature range | Tstg | -55 |  | 150 | °C |  | 4 |
| Supply voltage (IO ≤ 100 mA) | VCC | 5.5 |  | 45 | V | IO ≤ 100 mA (Note 1) | 4 |
| Supply voltage (IO ≤ 200 mA) | VCC | 6 |  | 45 | V | IO ≤ 200 mA (Note 1) | 4 |
| Start up voltage | VCC | 3 |  |  | V |  | 4 |
| VO operating voltage for RO | VOPR | 1 |  |  | V |  | 4 |
| VO operating voltage for SO | VOPS | 3.5 |  |  | V |  | 4 |
| Power on and under-voltage reset switching threshold adjustable range | VRTADJ | 3.5 |  | 4.5 | V |  | 4 |
| SI input voltage | VSI | 0 |  |  | V | max VCC | 4 |
| RADJ input voltage | VRADJ | 0 |  |  | V | max VO | 4 |
| Output current (HTSOP-J8) | IO | 0 |  | 300 | mA |  | 4 |
| Operating temperature range | Ta | -40 |  | 125 | °C |  | 4 |
| Junction to ambient (HTSOP-J8) | θJA |  | 130 |  | °C / W | 1s (Note 2) | 5 |
| Junction to ambient (HTSOP-J8) | θJA |  | 34 |  | °C / W | 2s2p (Note 3) | 5 |
| Junction to top center of case (HTSOP-J8) | ΨJT |  | 15 |  | °C / W | 1s (Note 2) | 5 |
| Junction to top center of case (HTSOP-J8) | ΨJT |  | 7 |  | °C / W | 2s2p (Note 3) | 5 |

## CAD (KiCad official)

- Symbol: `BD4269EFJ-CE2`
- Footprint: `Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm`
- 3D model: ESOP-8 (KiCad packages3D, STEP)
- 3D model files: `bd4269efj-ce2-etched.step` / `bd4269efj-ce2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bd4269efj-ce2.step` / `bd4269efj-ce2.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ROHM Semicon datasheet](docs/bd4269efj-ce2-datasheet.pdf) (28 pp, sha256 `e4bcad7348fc463d`, retrieved 2026-10-27, 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/bd4269efj-ce2-datasheet.pdf)