LP3470IM5-4.00 National Semiconductor, LP3470IM5-4.00 Datasheet - Page 4

• Manufacturer Part Number: LP3470IM5-4.00
• Description: Tiny Power On Reset Circuit
• Manufacturer: National Semiconductor

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Typical Operating Characteristics
I
Normalized t
V
Pin Description
CC
Pin
HYST
1
2
3
4
5
vs Temperture
vs V
RTH
RP
Name
Reset
GND
V
SRT
vs Temp.
V
CC1
CC
DS100016-10
DS100016-12
Set Reset Time-out Input. Connect a capacitor between this input and ground to select the Reset
Time-out period (t
leave this pin floating.
Ground pin.
Always connect to pin V
Supply voltage, and reset threshold monitor input.
Open-Drain, Active-Low reset output. Connect to an external pull-up resistor. Reset changes
from high to low whenever the monitored voltage (V
(V
goes high.
RTH
). Once V
DS100016-14
I
Normalized V
CC
CC
vs V
RP
exceeds V
). t
CC
RP
CC
T
= 2000 x C
(Pin 4).
A
RTH
RTH
= +25˚C, unless otherwise specified.
V
vs Temp.
4
HYST
, Reset remains low for the reset timeout period (t
1
vs Temperature
(C
DS100016-11
1
DS100016-8
in µF and t
Function
CC
RP
) drops below the reset threshold voltage
in ms). If no capacitor is connected,
V
Transient Rejection
CC
to Reset Delay vs Temp
DS100016-9
RP
DS100016-13
) and then
DS100016-6