fitipower integrated technology lnc.
FP6808
Microprocessor Reset
Circuits with Short Delay Time
Description
Features
The FP6808 is a cost-effective system supervisor
circuit designed to monitor microprocessor voltage
and VDD in digital systems. This device provides a
reset signal to the host processor when necessary.
Precision VDD Monitor for 2.5V, 3.0V, 3.3V and
5.0V Supplies
Precision Monitoring Voltages from 1.6V to 5.0V
Available in 100mV Steps
20ms Guaranteed Minimum Reset Output
Duration
Low Supply Current
2% High Precision Detection Voltage
VDD Transient Immunity
The circuit asserts a reset signal whenever the VDD
supply voltage declines below a preset threshold. It
keeps reset signal asserted for at least 20ms after
VDD has risen above the reset threshold.
No External Components
The FP6808-N has an open-drain active-low output
stage, while FP6808-C has a push-pull active-low
output. The FP6808-N’s open-drain output requires
a pull-up resistor.
Guaranteed Reset Valid to VDD=1V
Available in Two Output Configurations
▪ Open-Drain Output (FP6808-N)
▪ Push-Pull Output (FP6808-C)
RoHS Compliant
The FP6808 is optimized to reject fast transient
glitches on the VDD line. Low supply current makes
this device suitable for portable equipment.
Small SOT-23-5 Package
Applications
Computer
Battery Powered Equipment
Microprocessor Power Supply Monitoring
Controller
Embedded System
Automotive
Pin Assignments
Ordering Information
FP6808-□□□□□
S5 Package (SOT-23-5)
TR: Tape/Reel
Blank: Tube
NC
NC
5
1
4
3
P: Green
2
Package Type
S5: SOT-23-5
OUT VDD VSS
Figure 1. Pin Assignment of FP6808
C: Push-Pull
N: Open-Drain
SOT-23-5 Marking
Product
Code
Product
Code
Part Number
Part Number
Reset Voltage
FP6808-23NS5P
FP6808-26NS5P
FP6808-29NS5P
FP6808-31NS5P
FP6808-40NS5P
FP6808-44NS5P
FP6808-46NS5P
Ca
Cb
Cd
Ce
Cf
FP6808-23CS5P
FP6808-26CS5P
FP6808-29CS5P
FP6808-31CS5P
FP6808-40CS5P
FP6808-44CS5P
FP6808-46CS5P
Ck
Cm
Cn
Cr
23: 2.3V
26: 2.6V
29: 2.9V
31: 3.1V
40: 4.0V
44: 4.4V
46: 4.6V
Cs
Ct
Ch
Ci
Cu
FP6808-1.3-DEC-2012
1