YB1921
3-Pin Microprocessor Reset Monitor
Electrical Characteristics
Vcc=5V for L/M/J; 3.3V for T/S; 3.0V for R, TA = 25°C, unless otherwise specified.
Parameter
Input Voltage
Supply Current
Symbol
V
CC
I
CC
Condition
—
—
Min
2.0
—
4.54
4.29
3.92
3.02
2.87
2.58
—
Typ
—
18
4.63
4.38
4.00
3.08
2.93
2.63
30
Max
5.5
25
4.72
4.47
4.08
3.14
2.99
2.68
—
Unit
V
μA
Reset Threshold
V
TH
YB1921
L-4.63V
YB1921
M-4.38V
YB1921
J-4.00V
YB1921
T-3.08V
YB1921
S-2.93V
YB1921
R-2.63V
—
V
Reset Threshold Temperature
Coefficient
(4)
V
CC
to Reset Delay V
CC
= V
TH
to
(V
TH
– 100mV)
Reset Active Timeout Period
RESET Output Voltage Low
RESET Output Voltage High
—
ppm/°C
—
—
V
OL
V
OH
—
—
I
SINK
= 3mA
I
SOURCE
= 800μA
—
—
—
0.8V
CC
20
240
—
—
—
—
0.4
—
μsec
msec
V
V
Note 1:
Exceeding the absolute maximum rating may damage the device.
Note 2:
The device is not guaranteed to function outside its operating rating.
Note 3:
The maximum allowable power dissipation at any T
A
(ambient temperature) is calculated using: P
D (MAX)
=
(T
J (MAX)
– T
A
)/Θ
JA
. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the
regulator will go into thermal shutdown. See “Thermal Consideration” section for details
Note 4:
RESET threshold temperature coefficient is the worst case voltage change divided by the total temperature
range.
YB1921
www.yobon.com.tw
3
YOBON [ YOBON TECHNOLOGIES,INC. ]
