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Voltage Detectors (Reset ICs)
ROHM voltage detectors are reset ICs that feature superior ±1% detection. The broad lineup covers a wide voltage detection range while providing low current consumption in a small, thin form factor. These detectors are suitable for any application equipped with microcontrollers, CPUs, digital signal processors (DSPs), or various other controllers. In addition to the standard type, the series includes models with adjustable delay time, fixed delay time and watchdog timeout.
Both open drain output and CMOS are available that allows the output of the reset signal to be selected depending on the connected power supply. In addition, pin- and function-compatible SSOP packages enable easy replacement for existing ICs.
What’s more, the compact form factor allows engineers to place the circuit near microcontrollers in ultra-compact systems. And the entire lineup is both Pb-free and RoHS compliant.
Use our Easy Parts Finder below to quickly look through our selection of standard and automotive-grade Voltage Detectors (Reset ICs). Looking for something more specific? Take advantage of our Parametric Search to filter by grade, standard, voltage, package size, delay time and more.
Easy Part Finder
Voltage Detectors Easy Parts Finder
| Series | Delay time | Features | Circuit Current (µA) | Voltage Detection Accuracy Ta=25℃ (%) | Detection Voltage Range (V) | Detection Voltage Steps (V) | Absolute Maximum Ratings Voltage (V) | Operating Voltage Range (V) | Hysteresis Voltage | Package | Operating Temperature Range | Manual Reset PIN |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BD52xxG-1 Series |
Controlled by External Capacitor | - | 0.27 | ±0.9 | 0.9 to 5.0 | 0.1V | 7 | 0.8 to 6.0 | 5% | SSOP5 | -40℃ to 85℃ | - |
| BD71L4Lx-1 Series | - | Over Voltage Detection (Low active) |
0.7 | ±0.8 | 4.05 | - | 7 | 1.2 to 7.0 | 30mV | SSOP5, HVSOF5 | -40℃ to 85℃ | - |
| BD71L3Sx Series | - | Over Voltage Detection (Low active) |
0.7 | ±1 | 3.83 | - | 7 | 1.2 to 7.0 | 30mV | HVSOF5 | -40℃ to 85℃ | - |
| BD4142HFV | Controlled by External Capacitor | Sense type | 7.5 | ±1.8 | Default 0.5V (Adjustable via external resistors) | - | 6 | 3.0 to 5.5 | 10mV | HVSOF5 | -10℃ to 100℃ | - |
| BD37AxxFVM Series | Controlled by External Capacitor | With Watchdog Timer (INH pin switches to "High") |
5 | ±1.5 | 1.9, 4.1 | - | 10 | 1.0 to 10.0 | 13%, 3.5% | MSOP8 | -40℃ to 105℃ | - |
| BD99A41F | Controlled by External Capacitor | With Watchdog Timer (INH pin switches to "High") |
5 | ±1.5 | 4.1 | - | 10 | 1.0 to 10.0 | 3.5% | SOP8 | -40℃ to 105℃ | - |
| BD87AxxFVM Series | Controlled by External Capacitor | With Watchdog Timer (INH pin switches to "Low") |
5 | ±1.5 | 2.8, 2.9, 3.4, 4.1 | - | 10 | 1.0 to 10.0 | 3.5%, 4.5%, 5% | MSOP8 | -40℃ to 105℃ | - |
| BD3775AF | Controlled by External Capacitor | 2ch Reset & Comparator | 350 | ±1.5 | 1.23 | - | 20 | 3.5 to 18.0 | 28mV | SOP8 | -40℃ to 85℃ | - |
| Series | Delay time | Features | Circuit Current (µA) | Voltage Detection Accuracy Ta=25℃ (%) | Detection Voltage Range (V) | Detection Voltage Steps (V) | Absolute Maximum Ratings Voltage (V) | Operating Voltage Range (V) | Hysteresis Voltage | Package | Operating Temperature Range | Manual Reset PIN |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BD48(49)ExxG-M Series | - | - | 0.85 | ±1 | 2.3 to 6.0 | 0.1V | 10 | 0.95 to 10.0 | 5% | SSOP5 | -40℃ to 105℃ | - |
| BD45(46)ExxxG-M Series | Counter Timer Built-in | 50ms, 100ms, 200ms | 0.85 | ±1 | 2.3 to 6.0 | 0.1V | 10 | 0.95 to 10.0 | 5% | SSOP5 | -40℃ to 105℃ | Yes |
| BD52(53)xxG-2M Series | Controlled by External Capacitor | - | 0.27 | ±2.5 (Ta= All temperature) | 0.9 to 5.0 | 0.1V | 7 | 0.8 to 6.0 | 5% | SSOP5 | -40℃ to 105℃ | - |
| BD52(53)xxG-2C Series | Controlled by External Capacitor | - | 0.27 | ±3.0 (Ta= All temperature) | 0.9 to 5.0 | 0.1V | 7 | 0.8 to 6.0 | 5% | SSOP5 | -40℃ to 125℃ | - |
| BD52(53)xxNVX-2C Series | Controlled by External Capacitor | - | 0.27 | ±2.5 (Ta= All temperature) | 2.6 to 3.1 | 0.1V | 7 | 0.8 to 6.0 | 5% | SSON004R1010 | -40℃ to 125℃ | - |
| BD70(73)xxG-2C/ BD70H31G-C Series |
- | Over Voltage Detection (High active) |
0.3 | ±1.4 (Ta= All temperature) | 3.46 to 3.76 / 3.06 |
0.1V | 7 | 0.8 to 6.0 | - | SSOP5 | -40℃ to 125℃ | - |
| BD52W03G-C | Controlled by External Capacitor | Window Type, SENSE Detection | 0.3 | ±5.0 (Ta= All temperature) | 1.98V (Over Voltage) / 1.62V (Under Voltage) |
- | 7 | 1.6 to 6.0 | 1% | SSOP6 | -40℃ to 125℃ | - |
BD48HW0G-C |
- | Window Type, SENSE Detection, Adjust Type | 0.5 | ±0.75 (Ta= All temperature) | 1.277V (Over Voltage) / 1.277V (Under Voltage) |
- | 42 | 1.8 to 40 | 1% | SSOP6 | -40℃ to 125℃ | - |
