White Paper
- ISO 26262: Functional Safety Standard for Modern Road Vehicles
Application Note
- Voltage Detector Circuit Collection
BU4220F
BU4220F
Voltage Detector with Adjustable Delay Time
ROHM的低電壓自由延時設定CMOS電壓檢測IC系列，是一採用CMOS製程，並內建高精度與低耗電之延遲電路的CMOS電壓檢測IC系列。可藉由外接電容器設定延遲時間。為了讓客戶在應用上具有更多樣化的選擇，本產品系列備有Nch開汲極輸出與CMOS輸出等2種型式。檢測電壓範圍為0.9V~4.8V，0.1V的電壓增幅。全系列產品均為無鉛且符合RoHS指令。
Product Detail
規格:
Under Voltage Detection Voltage [V] (typ.)
2.0
VDET Precision [%]
±1
Reset Active Voltage Range [V]
0.7 to 7
Output Types
Open drain
Reset Delay Timer
Adjustable Delay
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
Delay Circuit Resistance [MΩ]
10.0
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
125
Package Size
2.00 x 2.10 (t=0.95)
功能:
・產品系列包含檢測電壓為0.1V Step，0.9V～4.8V之各種類型・高精度檢測電壓：±1%
・超低耗電流
Design Resources
Documents
White Paper
- ISO 26262: Functional Safety Standard for Modern Road Vehicles
Application Note
- Voltage Detector Circuit Collection
Technical Articles
Schematic Design & Verification
- Spice Models for Voltage Detector ICs
- Importance of Probe Calibration When Measuring Power: Deskew
- Impedance Characteristics of Bypass Capacitor
Thermal Design
- Thermal Resistance
Tools
Models
- BU4220F PSPICE Model
2D/3D/CAD
- SOP4 Footprint / Symbol
Packaging & Quality
Package Information
- Package Information
- Anti-Whisker formation
Manufacturing Data
- Factory Information
Environmental Data
- UL94 Flame Classifications of Mold Compound
- Compliance with the ELV directive
- REACH SVHC Non-use Declaration
- RoHS Comission Delegated Directive
Export Information
- The Export Control Order
- Export Administration Regulations(EAR)