BU4820F
Standard Voltage Detectors

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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Product Detail

 
Part Number | BU4820F-TR
Status | Recommended
Package | SOP4
Unit Quantity | 3000
Minimum Package Quantity | 3000
Packing Type | Taping
RoHS | Yes

Specifications:

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

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

Package Size

2.00 x 2.10 (t=0.95)

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
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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

Simulations (Login Required)

  • Method for Exporting Circuit Data (ROHM Solution Simulator)

Models

  • BU4820F 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)