Not Recommended for New Designs BU4919FVE
1.9V, CMOS Output Type, High Accuracy Voltage Detector

This product cannot be used for new designs (Not recommended for design diversion).

Product Detail


Replacement Product For BU4919FVE

Part Number
Ordering Part Number BU4919FVE-TR BD5219G-1TR
Similar Level - Similar Specification
Data Sheet    
Supply Status Not Recommended for New Designs Recommended
Package VSOF5 SSOP5
Unit Quantity 3000 3000
Minimum Packing Quantity 3000 3000
Packing Type Taping Taping
RoHS Yes Yes
Under Voltage Detection Voltage [V] (typ.) 1.9 1.9
VDET Precision [%] ±1 ±0.9
Reset Active Voltage Range [V] 0.7 to 7 0.8 to 6
Output Types CMOS Open drain
Reset Delay Timer No Adjustable Delay
Reset Active State Low Low
Manual Reset No No
Watchdog Timer No No
Auto Motive No No
Circuit Current (ON) [µA] 0.40(VDET=4.8V) 0.23
Circuit Current (OFF) [µA] 0.55(VDET=4.8V) 0.27
Hysteresis Voltage [V] VDET x 0.05 VDET x 0.05
L Output Current (LowVol) [mA] 3.3 1
L Output Current (HighVol) [mA] 6.5 2
Temperature (Min.)[°C] -40 -40
Temperature (Max.)[°C] 125 85
Package Size [mm] 1.6x1.6 (t=0.6) 2.9x2.8 (t=1.25)

Reference Design / Application Evaluation Kit

    • Reference Design - REFLVBMS002
    • Battery Management Reference Design for All-solid-state Batteries: Maxell's All-solid-state Battery × Nano Energy™ Collaboration Board
    • This reference design enables easy consideration of battery management solutions using all-solid-state batteries from Maxell, making it ideal for monitoring applications in the consumer sector and measurement equipment in the industrial market. (Please contact a sales representative or click here for more information on the REFLVBMS002-EVK-001 reference board .) Generally, in addition to being less prone to leakage and electrolyte degradation than rechargeable batteries such as li-ion that use a liquid electrolyte, all-solid-state batteries are attracting attention as next-generation batteries due to their wide operating temperature range, longer life, and higher reliability. The REFLVBMS002 is a reference design that combines a charge control IC jointly developed with Maxell, ROHM’s power supply IC that incorporates original ultra-low current technology Nano Energy™, a reset IC, and Maxell’s all-solid-state battery (PSB401010H) . Optimized for Maxell’s all-solid-state battery, the circuit provides a solution for the battery and power supply blocks that supports a wide range of applications.

      • Equipped with Maxell's all-solid-state battery that delivers high heat resistance*1, long life*2, and increased safety*3 over a wide range of temperature
      • Boost DC-DC converter IC utilizing original ultra-low current consumption technology Nano Energy™ significantly extends battery life
      • Built-in linear charger capable of CCCV charging suitable for Maxell’s all-solid-state battery
      • Battery voltage can be monitored by mounting a reset IC (optional)

      *1 High heat resistance: ~125°C environments. Based on Maxell test conditions.
      *2 Long life: Life expectancy based on various evaluations, analysis, and calculations.
      *3 Increased safety: No ignition or smoke in various safety tests such as heating to 200°C, nail puncture, or external short circuits.


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