component
BD37A41FVM-TR
Public Made by Adomby adom
ROHM Semicon Monitors & Reset Circuits, MSOP-8-2.8mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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BD37A41FVM-TR
ROHM Semicon · Monitors & Reset Circuits · MSOP-8-2.8mm
BD37A41FVM-TR 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 | CLK | input | Clock input from the microcontroller; detected on a positive edge with a minimum pulse width of 500 ns, a high threshold of VDD×0.8 (min) and a low threshold of VDD×0.3 (max), and it must not be left open. |
| 2 | CT | passive | Reset delay time setting capacitor connection; the external capacitor ranges from 470 pF to 3.3 µF and sets the RESET delay as tPLH = 0.69 × Rrst (10 MΩ typ) × CCT. |
| 3 | CTW | passive | WDT time setting capacitor connection; a capacitor must be connected, ranging from 0.001 µF to 10 µF, to set the watchdog monitor and reset times. |
| 4 | VDD | power_in | Power supply pin; RESET operates from 1.0 V to 10 V and WDT from 2.5 V to 10 V, with absolute maximum −0.3 V to 10 V. |
| 5 | N.C. | unconnected | Labelled NC pin in the pin description table; the datasheet specifies no function or connection for it. |
| 6 | GND | power_in | Ground pin; no pin may be held at a voltage below the ground pin at any time, including transients. |
| 7 | INH | input | WDT ON/OFF setting pin; for BD37Axx, INH high turns the watchdog timer on and low turns it off, with VINHH min VDD×0.8 and VINHL max VDD×0.3, and it must not be left open. |
| 8 | RESET | output | Reset output pin with N-channel open-drain output; minimum output current capacity is 0.7 mA at VDD = 1.2 V and VDS = 0.5 V, and maximum output leakage is 1 µA at VDD = VDS = 10 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | MSOP-8-2.8mm |
| Category | Power Management ICs |
| 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 |
|---|---|---|---|---|---|---|---|
| RESET Power Supply Voltage | VDD RESET | 1 | 10 | V | Ta = −40°C to 105°C | 3 | |
| WDT Power Supply Voltage | VDD WDT | 2.5 | 10 | V | Ta = −40°C to 105°C | 3 | |
| Power Supply Voltage | VDD | -0.3 | 10 | V | 3 | ||
| Operating Ambient Temperature | Topr | -40 | 105 | °C | 3 | ||
| Storage Temperature | Tstg | -55 | 125 | °C | 3 | ||
| Maximum Junction Temperature | Tjmax | 125 | °C | 3 | |||
| Power Dissipation (MSOP8) | Pd | 0.47 | W | MSOP8, reduced by 4.70 mW/°C over 25°C, glass epoxy board 70 mm × 70 mm × 1.6 mm | 3 | ||
| Total Supply Current 1 (during WDT operation) | IDD1 | 5 | 14 | µA | INH : WDT ON Logic Input CTW = 0.1µF | 3 | |
| Total Supply Current 2 (when WDT stopped) | IDD2 | 5 | 14 | µA | INH : WDT OFF Logic Input | 3 | |
| Output Leak Current | Ileak | 1 | µA | VDD = VDS = 10V | 3 | ||
| Output Current Capacity | IOL | 0.7 | mA | VDD = 1.2V, VDS = 0.5V | 3 | ||
| Detection Voltage 1 (4.1V Detect) | VDET1 | 4.039 | 4.1 | 4.162 | V | Ta = 25°C | 3 |
| Detection Voltage 2 (4.1V Detect) | VDET2 | 4.007 | 4.1 | 4.202 | V | Ta = −40°C to 105°C | 3 |
| RESET Transmission Delay Time: Low to High | tPLH | 3.9 | 6.9 | 10.1 | ms | CCT = 0.001µF *1; When VDD = VDET 0.5V | 4 |
| Delay Circuit Resistance | Rrst | 5.8 | 10 | 14.5 | MΩ | VCT = GND | 4 |
| Delay Pin Output Current | ICT | 150 | µA | VDD = 1.50V, VCT = 0.5V | 4 | ||
| Min Operating Voltage | VOPL | 1 | V | VOL ≤ 0.4V, RL = 470KΩ | 4 | ||
| WDT Monitor Time | twH | 7 | 10 | 20 | ms | CCTW = 0.01µF *2 | 4 |
| WDT Reset Time | twL | 2.4 | 3.3 | 7 | ms | CCTW = 0.01µF *3 | 4 |
| Clock Input Pulse Width | tWCLK | 500 | ns | 4 | |||
| CTW Charge Current | ICTWC | 0.25 | 0.5 | 0.75 | µA | VCTW = 0.2V | 4 |
| CTW Discharge Current | ICTWO | 0.75 | 1.5 | 2 | µA | VCTW = 0.8V | 4 |
| Thermal Resistance, junction to ambient (MSOP8) | ja | 212.8 | °C/W | MSOP8, mounted on glass epoxy board 70 mm × 70 mm × 1.6 mm | 9 |
CAD (KiCad official)
- Symbol:
BD37A41FVM-TR - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8-2.8mm (KiCad packages3D, STEP)
- 3D model files:
bd37a41fvm-tr-etched.step/bd37a41fvm-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bd37a41fvm-tr.step/bd37a41fvm-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ROHM Semicon datasheet (18 pp, sha256
ee2f58db3fd89aec, retrieved 2026-10-29, tier: manufacturer) - 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).