Voltage Detector with Watchdog Timer - BD99A41F
The BD37A19 / 41FVM, BD87A28 / 29 / 34 / 41FVM, BD99A41F is a watchdog timer reset IC. It delivers a high detection voltage precision of ±1.5% and a super-low current consumption of 5µA (Typ.). It can be used in a wide range of electronic devices to monitor power supply voltages and system operation to prevent runaway operation.
VDET Precision [%]
Reset Active Voltage Range [V]
1.0 to 10
Reset Delay Timer
Reset Active State
Circuit Current (ON) [µA]
Hysteresis Voltage [V]
VDET x 0.035
"L" Output Current (LowVol) [mA]
Delay Circuit Resistance [MΩ]
WDT Active Voltage Range [V]
2.5 to 10
Operating Temperature (Min.)[°C]
Operating Temperature (Max.)[°C]
5.00 x 6.20 (t=1.71)
Features:・High detection voltage precision : ±1.5%, ±2.5% (Ta = −40℃ to 105℃)
・Super-low current consumption : 5µA (Typ.)
・Built-in watchdog timer
・Reset delay time can be set with the CT pin's external capacitance.
・Watchdog timer monitor time and reset time can be set with the CTW pin's external capacitance.
・Output circuit type : N-channel open drain