LP3809 Datasheet, PDF (2/6 Pages) Lowpower Semiconductor inc – Micro-Power Voltage Detectors, Reset Of MCU With Delay Time

Functional Pin Description
Pin Name Pin Function
GND
Ground
RESET
Active Low Open-Drain Reset Output
VDD
Power Pin
Function Block Diagram
LP3809
Absolute Maximum Ratings
Supply Input Voltage---------------------------------------------------------------------------------------------------6V
Power Dissipation, PD @ TA = 25°C
SOT-23 --------------------------------------------------------------------------------------------------------------------400mW
Package Thermal Resistance
SOT-23, θJA -------------------------------------------------------------------------------------------------------------250°C/W
ESD Susceptibility
HBM (Human Body Mode) ---------------------------------------------------------------------------------------------2kV
MM(Machine-Mode)-----------------------------------------------------------------------------------------------------200V
Recommended Operating Conditions
Supply Input Voltage-----------------------------------------------------------------------------0.3V to 6V
Operation Ambient Temperature Range------------------------------------------------−40°C to 85°C
Electrical Characteristics
Parameter
Quiescent Current
Reset Threshold
Threshold Voltage Accuracy
VDD Drop to Reset Delay
Reset Active Time
RESET Output Voltage Low
Thermal Shutdown
Temperature
Symbol
Test Conditions
VEN ≥ 1.2V, IOUT =
IQ
0mA
VTH
TA = 27°C
ΔVTH
Trd
Drop = VTH -125mV
LP3809A/B VDD ≥ 1.02×VTH
VOL
3 = VDD < VTH ISINK
>3.5mA
TSD
LP3809-datasheet Oct.-2004
2-2
Min Typ Max Units
3
μA
1.2
1.5 V
-1.5
1.5 %
20
uS
210
mS
0.4
V
165
°C