SE810xS [SEAWARD]
3-Pin Microprocessor Reset Monitor;
| 型号： | SE810xS |
| 厂家： | 
Seaward Electronics Inc. |
| 描述： | 3-Pin Microprocessor Reset Monitor |
| 文件： | 总6页 (文件大小：209K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
3-Pin Microprocessor Reset Monitor
(Preliminary)
SE810
Description
Features
The SE810 is
a
cost-effective system
¾
Precision VCC Monitor for 2.8V, 3.0V, 3.3V, and
5.0V Supplies
supervisor Integrated Circuit (IC) designed to
monitor VCC in digital and mixed signal systems
and provide a warning signal when the system
power supply is out of working range, and a reset
signal to the host processor when necessary. No
external components are required.
¾
¾
¾
¾
¾
¾
¾
¾
150mSec typical RESET Output Delay.
Low 7μA Supply Current typical.
VCC Transient Immunity
Small SOT-23 Package and TO-92 Package
No External Components
The reset output is driven active within 20μsec
of VCC falling through the reset voltage threshold.
Reset is maintained active for a 150mSec(typ) after
VCC rises above the reset threshold. The SE810
has an active-high RESET output.
ESD rating is 7KV(HBM).
Wide Operating Temperature: -40°C to 125°C
100% Lead (Pb)-Free
The SE810 is characterized for operation from
-40oC to 125oC, junction temperature. The SE810
is optimized to reject fast transient glitches on the
VCC line. Low supply current of 7μA (VCC=3.3V)
makes these devices suitable for battery powered
applications. The output voltages range from 1.7V
to 4.5V in 100mV increments. Standard voltage
versions are 2.30, 2.63, 2.93, 3.08, 4.0, 4.38, and
4.63V.
Application
¾
¾
¾
¾
Computers
Embedded systems
Battery powered equipment
Critical µP power supply monitoring
Pin Configuration
Application Diagram
Vcc
C=0. 1uF
Vcc
Vcc
PROCESSOR
SE810
RESET
INPUT
RESET
GND
GND
Revision 7/28/2009
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2007. • www.seawardinc.com.cn
1
3-Pin Microprocessor Reset Monitor
(Preliminary)
SE810
Ordering/Marking Information (SOT23)
Ordering Information
Marking Information
S810xa•
SE810xS
The “x” denotes a suffix for VCC threshold.
Suffix
Reset VCC threshold(V)
The last character is the batch number.
A dot on top right corner is for lead-free
L
M
J
4.63
4.38
4.00
3.08
2.93
2.63
process.
T
S
R
Ordering/Marking Information (TO92)
Ordering Information
Marking Information
SE810Z
XXXX is the batch number.
Lead-free package is indicated by LF after
XXXX.
SE810Z
XXXX-LF
Suffix
Reset VCC threshold(V)
2.30
Z
Absolute Maximum Ratings(1)
Parameter
Symbol
VCC
Value
Units
V
Input Voltage
5.5
-0.3 to (VCC + 0.3)
20
Output Voltage
RESET
V
Input Current
mA
mA
Output Current
IOUT
PD
20
Power Dissipation
Internally Limited (3)
Output Short Circuit Duration
Thermal Resistance, Junction-to-Ambient
Operating Temperature Range
Lead Temperature (Soldering, 10 sec.)
Junction Temperature
Storage Temperature
Infinite
ΘJA
230
°C/W
℃
TA
-40~+125
260
°C
TJ
-40 to +125
-60 to +150
°C
TS
°C
Operating Rating(2)
Parameter
Symbol
VCC
Value
Units
Supply Input Voltage
Junction Temperature
+2.0V to +5.5
-40 to +125
V
TJ
°C
Revision 7/28/2009
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2007. • www.seawardinc.com.cn
2
3-Pin Microprocessor Reset Monitor
(Preliminary)
SE810
Electrical Characteristics
Vcc=5V for L/M/J ;3.3V for T/S ;3.0V for R ,TA = 25°C, unless otherwise specified.
Symbol
VCC
Parameter
Input Voltage
Supply Current
Condition
Min
2.0
Typ
Max
Unit
V
5.5
10
ICC
--
7
μA
SE810L-4.63V
SE810M-4.38V
SE810J-4.00V
SE810T-3.08V
SE810S-2.93V
SE810R-2.63V
SE810R-2.30V
4.51
4.27
3.90
3.00
2.85
2.56
2.18
4.63
4.38
4.00
3.08
2.93
2.63
2.25
4.75
4.49
4.10
3.16
3.00
2.70
2.33
VTH
Reset Threshold
V
Reset Threshold Temperature
Coefficient(4)
--
--
30
20
--
--
ppm/°C
VCC to Reset Delay VCC = VTH to (VTH
100mV)
–
μsec
Reset Active Timeout Period
RESET Output Voltage Low
RESET Output Voltage High
--
--
150
--
msec
VOL
VOH
ISINK = 1.2mA
0.4
--
V
V
ISOURCE = 800μA
0.8VCC
--
PIN DESCRIPTION:
Pin No.
Symbol
Description
Ground
RESET output remains high while Vcc is below the reset voltage
1
2
GND
RESET
threshold and for 150msec(typ) after Vcc rises above reset threshold
Supply Voltage (typ.)
3
Vcc
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 TA (ambient temperature) is calculated using: PD(MAX)
=
(TJ(MAX) – TA)/ΘJA. 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.
Revision 7/28/2009
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2007. • www.seawardinc.com.cn
3
3-Pin Microprocessor Reset Monitor
(Preliminary)
SE810
Typical Performance Characteristics
Vth VS Temperature
T-delay VS Temperature
3.02
3.00
2.98
2.96
2.94
2.92
2.90
400
350
300
250
200
150
100
50
0
-50 -25
0
25 50 75 100 125 150
Temperature(
-50 -25
0
25
50 75 100 125 150
)
℃
Temperature(
)
℃
Revision 7/28/2009
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2007. • www.seawardinc.com.cn
4
3-Pin Microprocessor Reset Monitor
(Preliminary)
SE810
OUTLINE DRAWING SOT-23
C
B
DIMENSIONS
INCHES
MIN MAX MIN MAX
J
H
MM
N
DIM
0.110 0.120 2.80
0.047 0.055 1.20
0.083 0.104 2.10
0.035 0.040 0.89
0.070 0.080 1.78
0.018 0.024 0.45
0.015 0.020 0.37
0.0005 0.004 0.013 0.10
0.034 0.040 0.887 1.02
0.003 0.007 0.085 0.18
3.04
1.40
2.64
1.03
2.05
0.60
0.51
A
B
C
D
E
F
G
H
J
D
A
E
G
F
K
K
L
L
-
0.027
-
0.69
OUTLINE DRAWING TO-92
DIMENSIONS
INCHES
A
MM
DIMN
B
D
MIN MAX MIN MAX
0.175 0.205 4.445 5.207
0.170 0.210 4.318 5.334
0.500 0.610 12.70 15.50
0.016 0.021 0.407 0.533
0.045 0.055 1.143 1.397
0.095 0.105 2.413 2.667
0.080 0.105 2.032 2.667
0.125 0.165 3.175 4.191
A
B
E
F
G
H
J
E
G
F
H
K
K
J
Revision 7/28/2009
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2007. • www.seawardinc.com.cn
5
3-Pin Microprocessor Reset Monitor
(Preliminary)
SE810
Contact Information
Seaward Electronics Incorporated – China
Section B, 2nd Floor, ShangDi Scientific Office Complex,#22 Shangdi Xinxi Rd
Haidian District, Beijing 100085, China
Tel: 86-10-8289-5700/01/05
Fax: 86-10-8289-5706
Email: sales@seawardinc.com.cn
Seaward Electronics Corporation – Taiwan
2F, #181, Sec. 3, Minquan East Rd,
Taipei, Taiwan R.O.C
Tel: 886-2-2712-0307
Fax: 886-2-2712-0191
Email: sales@seawardinc.com.tw
Seaward Electronics Incorporated – North America
1512 Centre Pointe Dr.
Milpitas, CA95035, USA
Tel: 1-408-821-6600
Last Updated - 7/28/2009
Revision 7/28/2009
Preliminary and all contents are subject to change without prior notice.
© Seaward Electronics, Inc., 2007. • www.seawardinc.com.cn
6
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