YB1921 Datasheet, PDF (3/5 Pages) YOBON TECHNOLOGIES,INC. – 3-Pin Microprocessor Reset Monitor

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
Reset Threshold
V_TH
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
V_OL
RESET Output Voltage High
V_OH
Condition
—
—
YB1921L-4.63V
YB1921M-4.38V
YB1921J-4.00V
YB1921T-3.08V
YB1921S-2.93V
YB1921R-2.63V
Min
2.0
—
4.54
4.29
3.92
3.02
2.87
2.58
—
—
—
—
I_SINK = 3mA
I_SOURCE = 800μA
—
—
—
0.8V_CC
Typ
—
18
4.63
4.38
4.00
3.08
2.93
2.63
30
20
240
—
—
Max
5.5
25
4.72
4.47
4.08
3.14
2.99
2.68
—
—
—
0.4
—
Unit
V
μA
V
ppm/°C
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
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