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YB1921

Features: `Precision VCC Monitor for 2.8V, 3.0V, 3.3V, and 5.0V Supplies`140msec Guaranteed Minimum RESET Output Duration`RESET Output Guaranteed to VCC=1.0V`Low 18A Supply Current`VCC Transient Immunity`Small SOT-23 Package`No External Components`Wide Operating Temperature: 0 to 85Application·Com...

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SeekIC No. : 004549762 Detail

YB1921: Features: `Precision VCC Monitor for 2.8V, 3.0V, 3.3V, and 5.0V Supplies`140msec Guaranteed Minimum RESET Output Duration`RESET Output Guaranteed to VCC=1.0V`Low 18A Supply Current`VCC Transient Imm...

YB1921 Data Sheet

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Part Number:
YB1921
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/23

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Product Details

Description



Features:

`Precision VCC Monitor for 2.8V, 3.0V, 3.3V, and 5.0V Supplies
`140msec Guaranteed Minimum RESET Output Duration
`RESET Output Guaranteed to VCC=1.0V
`Low 18A Supply Current
`VCC Transient Immunity
`Small SOT-23 Package
`No External Components
`Wide Operating Temperature: 0 to 85


Application

·Computers
·Embedded systems
·Battery powered equipment
·Critical µP power supply monitoring


Specifications

Parameter Symbol Value Unit
Value  
Input Voltage

Output Voltage		 VCC

RESET		 5.5

-0.3 to (Vcc+0.3)		 V

V
Input Current

Output Current		 -

IOUT		 20

20		 mA

mA
Power Dissipation

Output Short Circuit Duration		 PD

-		 Internally Limited (3)

Infinite		 -
-
Thermal Resistance, Junction-to-Ambient

Operating Temperature Range		 JA

TA		 230

0~85		 /W

Lead Temperature (Soldering, 10 sec.) - 260
Junction Temperature

Storage Temperature		 TJ

TS		 0 to+125

-60 to+150




Description

The YB1921 is a cost-effective system supervisor Integrated Circuit (IC) designed to monitor VCC in digital and mixed signal systems and provide a warning signal when the system power supply is out of working range, and a reset signal to the host processor when necessary. No external components are required.

The reset output is driven active within 20sec of VCC falling through the reset voltage threshold. Reset is maintained active for a minimum of 140msec after VCC rises above the reset threshold. The YB1921 has an active-low RESET output.

The output of the YB1921 is guaranteed valid down to VCC=1V. The YB1921 is optimized to reject fast transient glitches on the VCC line. Low supply current of 18A (VCC=3.3V) makes these devices suitable for battery powered applications.




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