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Datasheet> All Categories > Power/power management> The power supply circuit> ZXCM210LF
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ZXCM210LF

Description
Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, SOT-23, SMT-3
CategoryPower/power management    The power supply circuit   
File Size328KB，8 Pages
ManufacturerDiodes Incorporated
Download Datasheet Parametric Compare View All

ZXCM210LF Overview

Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, SOT-23, SMT-3

ZXCM210LF Parametric

Parameter NameAttribute value
MakerDiodes Incorporated
Parts packaging codeSOT-23
package instructionTSOP,
Contacts3
Reach Compliance Codeunknow
ECCN codeEAR99
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G3
JESD-609 codee3
length2.86 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals3
Maximum operating temperature125 °C
Minimum operating temperature-55 °C
Package body materialPLASTIC/EPOXY
encapsulated codeTSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE, THIN PROFILE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.1 mm
Maximum supply voltage (Vsup)5.5 V
Minimum supply voltage (Vsup)1 V
Nominal supply voltage (Vsup)1.2 V
surface mountYES
Temperature levelMILITARY
Terminal surfaceMATTE TIN
Terminal formGULL WING
Terminal pitch0.95 mm
Terminal locationDUAL
Maximum time at peak reflow temperature40
width1.3 mm

ZXCM210LF Preview

ZXCM209
ZXCM210
VERY LOW POWER MICROPROCESSOR RESET DEVICES
DESCRIPTION
The ZXCM209/210 are three terminal supervisory
circuits used to monitor the power supplies in
microprocessor and digital systems. They provide a
high performance economical solution when used
with 5V, 3V or lower powered circuits. Reset
thresholds suitable for operation with a variety of
supply voltages are available.
These devices provide a reset signal whenever the
supply voltage falls below a preset threshold, keeping
it asserted for a minimum delay period of 140ms after
the supply has risen above the reset level. The
ZXCM209 has an active-low RESET output (which is
guaranteed to be in the correct state for supplies down
to 1V), while the ZXCM210 has an active-high RESET
output.
The reset comparator has in built hysteresis to prevent
erratic operation and is designed to ignore supply
transients. Low supply current (typically 2µA) makes
the ZXCM209/210 devices ideal for use in portable
equipment. They are available in a 3-pin SOT23
surface mount package with an industry standard
pinout.
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
Enhanced alternative to MAX809/810 and similar
parts
Precision monitoring of 5V, 3.3V, 3V power
supply voltages
1% threshold tolerance
2µA typical supply current
140ms minimum power on reset pulse width
Alternative minimum pulse widths available,
contact your local sales office for availability
RESET LOW Output (ZXCM209)
RESET HIGH Output (ZXCM210)
Power supply transient immunity
No latch up
No external components
3-Pin SOT23 package
APPLICATIONS
•
•
•
•
•
•
•
•
Computer systems
Controllers
Instrumentation
Microprocessor power monitoring
Microcontroller power monitoring
Power supplies
Portable/Battery-powered equipment
Automotive
APPLICATION CIRCUIT
v
cc
v
cc
ZXCM
Reset
Output
v
cc
Micro
Reset
Input
Gnd
Gnd
ISSUE 3 - FEBRUARY 2001
1
ZXCM209
ZXCM210
ABSOLUTE MAXIMUM RATINGS
Terminal Voltage with respect to G
ND
V
CC
RESET, RESET
Input Current, V
CC
Output Current
Rate of Rise, V
CC
Continuous Power Dissipation
Operating Temperature Range
Storage Temperature Range
-0.3V to 7.0V
-0.3V to (V
CC
+ 0.3V)
20mA
20mA
250V/µs
500mW
-55°C to +125°C
-65°C to +150°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum
conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
TEST CONDITIONS (unless otherwise stated) V
CC
SYMBOL
PARAMETER
= full range, T = -55°C to +125°C
A
CONDITIONS
LIMITS
MIN
TYP
MAX
5.5
5.5
2
5
4.68
4.42
4.04
3.11
2.96
2.66
5
50
30
140
560
UNITS
V
R
I
CC
V
TH
V
CC
Range
Supply Current
Reset Threshold
T
A
=0° to 70°C
T
A
=-55° to 125°C
Suffix L; T
A
=25°C
Suffix M; T
A
=25°C
Suffix J; T
A
=25°C
Suffix T; T
A
=25°C
Suffix S; T
A
=25°C
Suffix R; T
A
=25°C
1.0
1.2
V
V
µA
V
V
V
V
V
V
%
%
ppm/°C
µs
ms
4.58
4.34
3.96
3.05
2.90
2.60
4.63
4.38
4.00
3.08
2.93
2.63
1
V
THT
∆V
TH
/°C
V
D
V
TO
Reset Threshold
Tolerance
Reset Threshold Temp.
Coefficient
V
CC
to Reset Delay
Reset Active Timeout
Period
T
A
=25°C
T
A
=-55° to 125°C
ISSUE 3 - FEBUARY 2001
2
ZXCM209
ZXCM210
ELECTRICAL CHARACTERISTICS ZXCM209
TEST CONDITIONS (unless otherwise stated)
V = full range, T = -55°C to +125°C
CC
A
SYMBOL
PARAMETER
CONDITIONS
LIMITS
MIN
TYP
MAX
0.3
0.3
0.4
0.8V
cc
UNITS
V
OL
Reset Output Voltage
Low
V
CC
>1V, I
OL
=100µA (0 to 85°C)
V
CC
>1.2V, I
OL
=200µA
V
TH
>V
CC
>2.5V, I
OL
=2.7mA
V
CC
>V
TH
max, I
OH
=1mA
V
V
V
V
V
OH
Reset Output Voltage
High
ELECTRICAL CHARACTERISTICS ZXCM210
TEST CONDITIONS (unless otherwise stated)
V = full range, T = -55°C to +125°C
CC
A
SYMBOL
PARAMETER
CONDITIONS
LIMITS
MIN
TYP
MAX
0.3
0.4
0.8V
cc
0.8V
cc
UNITS
V
OL
V
OH
Reset Output Voltage
Low
Reset Output Voltage
High
V
CC
>V
TH
max, I
OL
=2mA
V
CC
>V
TH
max, I
OL
=2.7mA
V
CC
>1.5V, I
OH
=150µA
V
CC
>V
TH
>2.5V, I
OH
=1mA
V
V
V
V
Note: Device testing is performed at T
A
=25°C. Device thermal performance is guaranteed by design
TYPICAL CHARACTERISTICS
ISSUE 3 - FEBRUARY 2001
3
ZXCM209
ZXCM210
TYPICAL CHARACTERISTICS
ISSUE 3 - FEBUARY 2001
4
ZXCM209
ZXCM210
APPLICATIONS INFORMATION
Negative going V
CC
transients
The ZXCM209/210 are, to a good degree, immune to
short duration negative going supply transients. Under
certain circumstances very brief transients are allowed
without inappropriate false triggering of the reset
circuit. The response to supply transients is shown in the
Noise Immunity graph in the typical characteristics. The
graph indicates the typical allowable transient duration
for a specified threshold overdrive such that a reset
pulse is not generated. Addition of a bypass capacitor,
e.g. 0.1µF, as close as possible to the V
CC
pin will provide
extra transient immunity.
Reset valid down to very low supply voltages
With V
CC
between 0V and 1V the output of the
ZXCM209/210 may be in an undefined state. In many
s y st e ms t h i s is in c o n seq u e n t i al as t h e
microprocessor, and other circuits, will be inoperative
with supplies this low. In applications where this is
important, the addition of an external resistor ensures
that the reset output remains valid for V
CC
< 1V. The
resistor value is non critical: a value of 100kΩ is
recommended. For the ZXCM209 the resistor should
be applied between reset output and ground: for the
ZXCM210 between reset output and V
CC
. Figure 1
shows the connection diagram for the ZXCM devices
in these configurations.
v
cc
v
cc
ZXCM209
Reset
Output
v
cc
v
cc
Micro
Reset
Input
v
cc
ZXCM210
Reset
Output
100k
v
cc
Micro
Reset
Input
Gnd
100k
Gnd
Gnd
Gnd
Figure 1
Circuit for operation of ZXCM with reset valid down to very low supply voltage.
ISSUE 3 - FEBRUARY 2001
5
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ZXCM210LF Related Products

ZXCM210LF ZXCM209LF ZXCM209JF ZXCM209RF ZXCM209SF ZXCM209MF
Description Power Supply Support Circuit, Fixed, 1 Channel, PDSO3, SOT-23, SMT-3 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, SOT-23, SMT-3 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, SOT-23, SMT-3 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, SOT-23, SMT-3 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, SOT-23, SMT-3 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO3, SOT-23, SMT-3
Maker Diodes Incorporated Diodes Incorporated Diodes Incorporated Diodes Incorporated Diodes Incorporated Diodes Incorporated
package instruction TSOP, TSOP, TO-236 TSOP, TO-236 TSOP, TO-236 TSOP, TO-236 TSOP, TO-236
Reach Compliance Code unknow unknown unknown unknown unknown unknown
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Adjustable threshold NO NO NO NO NO NO
Analog Integrated Circuits - Other Types POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT POWER SUPPLY SUPPORT CIRCUIT
JESD-30 code R-PDSO-G3 R-PDSO-G3 R-PDSO-G3 R-PDSO-G3 R-PDSO-G3 R-PDSO-G3
JESD-609 code e3 e0 e0 e0 e0 e0
length 2.86 mm 2.86 mm 2.86 mm 2.86 mm 2.86 mm 2.86 mm
Humidity sensitivity level 1 1 1 1 1 1
Number of channels 1 1 1 1 1 1
Number of functions 1 1 1 1 1 1
Number of terminals 3 3 3 3 3 3
Maximum operating temperature 125 °C 125 °C 125 °C 125 °C 125 °C 125 °C
Minimum operating temperature -55 °C -55 °C -55 °C -55 °C -55 °C -55 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code TSOP TSOP TSOP TSOP TSOP TSOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, THIN PROFILE SMALL OUTLINE, THIN PROFILE SMALL OUTLINE, THIN PROFILE SMALL OUTLINE, THIN PROFILE SMALL OUTLINE, THIN PROFILE SMALL OUTLINE, THIN PROFILE
Peak Reflow Temperature (Celsius) 260 235 235 235 235 235
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 1.1 mm 1.1 mm 1.1 mm 1.1 mm 1.1 mm 1.1 mm
Maximum supply voltage (Vsup) 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V
Minimum supply voltage (Vsup) 1 V 1 V 1 V 1 V 1 V 1 V
Nominal supply voltage (Vsup) 1.2 V 1.2 V 1.2 V 1.2 V 1.2 V 1.2 V
surface mount YES YES YES YES YES YES
Temperature level MILITARY MILITARY MILITARY MILITARY MILITARY MILITARY
Terminal surface MATTE TIN Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 0.95 mm 0.95 mm 0.95 mm 0.95 mm 0.95 mm 0.95 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 40 NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
width 1.3 mm 1.3 mm 1.3 mm 1.3 mm 1.3 mm 1.3 mm
Is it Rohs certified? - incompatible incompatible incompatible incompatible incompatible
Encapsulate equivalent code - TO-236 TO-236 TO-236 TO-236 TO-236
power supply - 5 V 5 V 3 V 3 V 5 V
Maximum supply current (Isup) - 0.005 mA 0.005 mA 0.005 mA 0.005 mA 0.005 mA
technology - CMOS CMOS CMOS CMOS CMOS
Threshold voltage nominal - +4.63V +4V +2.63V +2.93V +4.38V

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