ZSM300_06 [ZETEX]
SUPPLY VOLTAGE MONITOR; 电源电压监控器![ZSM300_06](http://pdffile.icpdf.com/pdf1/p00103/img/icpdf/ZSM300_557005_icpdf.jpg)
型号: | ZSM300_06 |
厂家: | ![]() |
描述: | SUPPLY VOLTAGE MONITOR |
文件: | 总5页 (文件大小:155K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
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SUPPLY VOLTAGE
MONITOR
ZSM300
ISSUE 3 – JULY 2006
DEVICE DESCRIPTION
FEATURES
The ZSM300 is a three terminal under
voltage monitor circuit for use in
microprocessor systems. The threshold
voltage of the device has been set to 2.63
volts making it ideal for 3 volt circuits.
SOT223 and TO92 packages
Power on reset generator
Automatic reset generation
Low standby current
•
•
•
•
•
•
•
Included in the device is a precise voltage
reference and a comparator with built in
hysteresis to prevent erratic operation. The
ZSM300 features an open collector output
capable of sinking at least l0mA which only
requires a single external resistor to
interface to following circuits.
Guaranteed operation from 1 volt
Wide supply voltage range
Internal clamp diode to discharge
delay capacitor
2.63 volt threshold for 3 volt logic
•
•
20mV hysteresis prevents erratic operation
Operation of the device is guaranteed from
one volt upwards, from this level to the
device threshold voltage the output is held
low providing a power on reset function.
Should the supply voltage, once established,
at any time drop below the threshold level
then the output again will pull low.
APPLICATIONS
Microprocessor systems
•
Computers
•
Computer peripherals
•
Instrumentation
•
Automotive
The device is available in a TO92 package for
through hole applications as well as SOT223
for surface mount requirements.
•
Battery powered equipment
•
SCHEMATIC DIAGRAM
4-339
Issue 3 - J uly 2006
© Zetex Semiconductors plc 2006
ZSM300
Power Dissipation
TO92
SOT223
ABSOLUTE MAXIMUM RATING
780mW
2W(Note 2)
Input Supply Voltage
-1 to 10V
Offstate Output Voltage
10V
Onstate Output
Sink Current(Note 1)
Internally limited
100mA
Clamp Diode
Forward Current(Note 1)
Operating Junction
Temperature
150°C
Operating Temperature
Storage Temperature
-40 to 85°C
-55 to 150°C
TEST CONDITIONS
amb
(T
=25°C for typical values, T
=-40 to 85°C for min/max values (Note3))
amb
COMPARATOR
MIN
TYP.
MAX.
PARAMETER
SYMBOL
UNITS
V
Threshold Voltage
High state output (Vcc increasing)
VIH
2.56
2.64
2.7
Threshold Voltage
Low state output (Vcc decreasing)
VIL
VH
2.56
0.01
2.62
0.02
2.7
V
V
Hysteresis
0.05
OUPUT
Output sink saturation:
(Vcc=2.2V, Isink=8.0mA)
(Vcc=2.2V, Isink=2.0mA)
(Vcc=1.0V, Isink=0.1mA)
VOL
0.46
0.15
1.0
0.4
0.25
60
V
V
V
Onstate output sink current
(Vcc , Output=2.2V)
Isink
Ioh
Vf
10
27
mA
Offstate output leakage current
(Vcc , Output=3V)
0.02
1.2
2.5
0.5
1.5
µA
V
Clamp diode forward voltage
(If=10mA)
0.6
Propagation delay
Td
µs
(Vin 3V to 2.2V, Rl=10k, Tamb=25°C)
TOTAL DEVICE
Operating input voltage range
Vcc
Iq
1.0 to 6.5
V
Quiescent input current (Vcc=3V)
125
190
µA
Note:
1. Maximum package power dissipation must be observed.
2. Maximum power dissipation for the SOT223 package is calculated assuming that the device
is mounted on a PCB measuring 2 inches square.
3. Low duty cycle pulse techniques are used during test to maintain junction temperatures as
close to ambient as possible.
4-340
Issue 3 - J uly 2006
© Zetex Semiconductors plc 2006
www.zetex.com
ZSM300
TYPICAL CHARACTERISTICS
500
400
300
200
100
5
R =10K
TA =25 °C
4
85 °C
3
2
25 °C
-40 °C
1
0
0
0
2
4
6
8
10
4
5
0
1
2
3
(V)
Input Voltage
Input Voltage (V)
Input Current vs. Input Voltage
Output Voltage vs. Input Voltage
50
40
Vin=2.4V
RL =10K
3.0
2.4
2
30
-40 °C
4
ꢀ
ꢀ
25 °C
85 °C
20
2
10
0
0
3
0
1
2
4
0
0.4
0.8
1.2
1.6
2.0
Time (µs)
Output Saturation Voltage (V)
Reset Delay Time
Output Saturation Voltage vs. Sink Current
100
2.65
2.64
2.63
Vin=0V
Upper Threshold
80
60
85 °C
25 °C
-40 °C
40
2.62
2.61
Lower Threshold
20
0
2.60
-40
0
0.4
0.8
1.2
1.6
2.0
20
-20
0
40
60
80
100
Temperature (°C)
Forward Voltage (V)
Clamp Diode Forward Current vs. Voltage
Threshold Voltage vs. Temperature
4-341
Issue 3 - J uly 2006
© Zetex Semiconductors plc 2006
www.zetex.com
ZSM300
TIMING DIAGRAM
Vcc
Threshold
Voltage
1 V
Output
Output
Output
Undefined
Undefined
APPLICATION CIRCUIT
Note 4: A time delayed reset can be accomplished with the additional Cd.
1
TDY = RCd ln
VTH(mpu )
TDY =Time (Seconds)
VTH =Microprocessor Reset Threshold
Vin =Power Supply Voltage
1 −
Vin
4-342
Issue 3 - J uly 2006
© Zetex Semiconductors plc 2006
www.zetex.com
ZSM300
CONNECTION DIAGRAMS
SOT223 Package Suffix – G
TO92 Package Suffix – C
Top View –
Bottom View
Pin 4 floating or connected to pin 2
ORDERING INFORMATION
Part Number
ZSM300G
ZSM300C
Package
SOT223
TO92
Part Mark
ZSM300
ZSM300
Europe
Americas
Zetex Inc
Asia Pacific
Zetex (Asia Ltd)
Corporate Headquarters
Zetex GmbH
Zetex Semiconductors plc
Streitfeldstraße 19
D-81673 München
Germany
700 Veterans Memorial Highway 3701-04 Metroplaza Tower 1 Zetex Technology Park, Chadderton
Hauppauge, NY 11788
USA
Hing Fong Road, Kwai Fong Oldham, OL9 9LL
Hong Kong United Kingdom
Telefon: (49) 89 45 49 49 0 Telephone: (1) 631 360 2222
Telephone: (852) 26100 611 Telephone: (44) 161 622 4444
Fax: (49) 89 45 49 49 49
europe.sales@zetex.com
Fax: (1) 631 360 8222
usa.sales@zetex.com
Fax: (852) 24250 494
asia.sales@zetex.com
Fax: (44) 161 622 4446
hq@zetex.com
For international sales offices visit www.zetex.com/offices
Zetex products are distributed worldwide. For details, see www.zetex.com/salesnetwork
This publication is issued to provide outline information only which (unless agreed by the company in writing) may not be
used, applied or reproduced for any purpose or form part of any order or contact or be regarded as a representation relating
to the products or services concerned. The company reserves the right to alter without notice the specification, design, price
4-343
or conditions of supply of any product or service.
Issue 3 - July 2006
© Zetex Semiconductors plc 2006
www.zetex.com
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