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BD9555FVM-CGTR
Public Made by Adomby adom
ROHM Semicon Timers / Counters, MSOP-8-2.8mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBD9555FVM-CGTR
ROHM Semicon · Timers / Counters · MSOP-8-2.8mm
BD9555FVM-CGTR from ROHM Semicon, in a MSOP-8-2.8mm. 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 | Power supply input, with a recommended operating range of 4.5 V to 42 V and an absolute maximum rating of -0.3 V to +50 V. |
| 2 | DCENB | input | Enable input: a low level (VIL_DCENB max 3.6 V) fixes OUT at high, and a high level (VIH_DCENB min 4.4 V, up to VIN + 0.2 V) starts the PWM output. |
| 3 | N.C. | unconnected | Marked N.C. (no connection) in the pin table; the datasheet gives no function for this pin. |
| 4 | OUT | output | PWM output that swings to VOH min 11.0 V at IOH = -10 mA and to VOL max 3.8 V at IOL = 50 mA, with an absolute maximum output current of 70 mA. |
| 5 | N.C. | unconnected | Marked N.C. (no connection) in the pin table; the datasheet gives no function for this pin. |
| 6 | GND | power_in | Ground reference pin for the IC. |
| 7 | CRT | passive | CR timing connection for the external capacitor CCRT and resistor RCRT, which sets the ramp between the 1.1 V (typ) charge-on and 3.0 V (typ) discharge-on thresholds. |
| 8 | DISC | passive | Discharge setting pin that sets the discharge path with a typical discharge resistance RD of 50 Ω. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | MSOP-8-2.8mm |
| Category | Clock/Timing |
| 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 |
|---|---|---|---|---|---|---|---|
| Circuit Current | IIN | 1 | 3 | mA | 3 | ||
| CRT Terminal Charge Current | ICRT_SO | 29.75 | 35 | 40.25 | µA | VCRT=0.9V | 3 |
| CRT Terminal Charge ON Voltage | VCRT_CHA | 0.99 | 1.1 | 1.21 | V | 3 | |
| CRT Terminal Discharge ON Voltage | VCRT_DIS | 2.7 | 3 | 3.3 | V | 3 | |
| CRT Terminal Charge Resistance | RCHA | 51.6 | 54.3 | 57 | kΩ | RCHA = (VCRT_DIS - VCRT_CHA) / ICRT_SO | 3 |
| DISC Terminal Discharge Resistance | RD | 50 | 100 | Ω | VCRT=3.4V | 3 | |
| DCENB Terminal "H" Input Voltage | VIH_DCENB | 4.4 | V | 3 | |||
| DCENB Terminal "L" Input Voltage | VIL_DCENB | 3.6 | V | 3 | |||
| "H" Output Voltage | VOH | 11 | 12.3 | V | IOH=-10mA | 3 | |
| "L" Output Voltage | VOL | 1.28 | 3.8 | V | IOL=50mA | 3 | |
| Power Supply Voltage (absolute maximum) | VIN | -0.3 | 50 | V | 3 | ||
| Output Current | Io | 70 | mA | 3 | |||
| Power Dissipation | Pd | 0.38 | W | Pd deleted at 3.8mW/°C at temperatures above Ta=25°C (Note1) | 3 | ||
| Operating Temperature Range (absolute maximum) | Topr | -40 | 125 | °C | 3 | ||
| Storage Temperature Range | Tstg | -55 | 150 | °C | 3 | ||
| Junction Temperature | Tjmax | 150 | °C | 3 | |||
| Power Supply Voltage (recommended) | VIN | 4.5 | 42 | V | 3 | ||
| Operating Temperature Range (recommended) | Topr | -40 | 125 | °C | 3 | ||
| CR Timer Frequency Range | FPWM | 1 | 10000 | Hz | 3 | ||
| PWM Minimum Pulse Width | TMIN | 1 | µs | 3 | |||
| Input Capacitor | CIN | 0.1 | µF | Ceramic capacitor recommended | 3 | ||
| CRT Terminal Capacitor | CCRT | 19 | 18 | pF | Ceramic capacitor recommended | 3 | |
| CRT Terminal Resistor | RCRT | 500 | 5 | Ω | 3 |
CAD (KiCad official)
- Symbol:
BD9555FVM-CGTR - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8-2.8mm (KiCad packages3D, STEP)
- 3D model files:
bd9555fvm-cgtr-etched.step/bd9555fvm-cgtr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bd9555fvm-cgtr.step/bd9555fvm-cgtr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ROHM Semicon datasheet (15 pp, sha256
8ef2e509472f042f, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).