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Standard Voltage Detectors - BU4939F

ROHM's low voltage standard CMOS reset ICs feature low current consumption and high precision. The extensive lineup includes both Nch Open Drain and CMOS output types in a wide range of detection voltages (from 0.9V to 4.8V, in 0.1V steps), enabling selection of the ideal solution based on customer requirements. In addition, the entire series is of course both lead-free and RoHS-compliant.

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* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part number
Status
Package
Unit Quantity
Minimum Package Quantity
Packing Type
RoHS
BU4939F-TR Active SOP4 3000 3000 Taping Yes
 
Specifications:
Voltage Detection[V] 3.9
VDET Precision [%] ±1
Reset Active Voltage Range [V] 0.7 to 7
Output Types CMOS
Reset Delay Timer No
Reset Active State Low
Manual Reset No
Watchdog Timer No
Auto Motive No
Circuit Current (ON) [µA] 0.40(VDET=4.8V)
Circuit Current (OFF) [µA] 0.55(VDET=4.8V)
Hysteresis Voltage [V] VDET x 0.05
"L" Output Current (LowVol) [mA] 3.3
"L" Output Current (HighVol) [mA] 6.5
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 125
Features:
  • ・Broad lineup available in different detection voltages : 0.9V to 4.8V (0.1V increments)
    ・High detection voltage accuracy : ±1%
    ・Ultra-low current consumption
 
 
Technical Data
Application Note

Voltage Detector Circuit Collection

Application Note

Spice Models for Voltage Detector ICs

Application Note

Thermal Resistance