CAT859CTBI-GT10 [CATALYST]
Power Supply Support Circuit, Fixed, 1 Channel, +2.4VV, PDSO3, ROHS COMPLIANT, TO-236, SOT-23, 3 PIN;
| 型号： | CAT859CTBI-GT10 |
| 厂家： | 
CATALYST SEMICONDUCTOR |
| 描述： | Power Supply Support Circuit, Fixed, 1 Channel, +2.4VV, PDSO3, ROHS COMPLIANT, TO-236, SOT-23, 3 PIN 光电二极管 电源管理电路 电源电路 |
| 文件： | 总10页 (文件大小：751K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
CAT853, CAT863
CAT859, CAT869
3-Pin Microprocessor Power Supply
Supervisors
FꢀATꢁꢂꢀS
DꢀSCꢂIPTIOꢄ
■ Precision monitoring of +3.3V (-5%, -10%), 5V
The CAT853, CAT863, CAT859, and CAT869 are
supervisorycircuitsthatmonitorpowersuppliesindigital
systems.
(-10% Power Supplies)
■ Active low reset output
Thesedevicesgeneratearesetsignal,whichisasserted
whilethepowersupplyvoltageisbelowapresetthreshold
level and for at least ꢀ40ms after the power supply level
has risen above that level. Industry standard threshold
levels are offered to support +3.3V or 5.0V systems.
■ ꢂeset valid down to VCC = 1.0V
■ 6µA power supply current
■ Power supply transient immunity
■ Industrial temperature range: -40ºC to +85ºC
■ ꢂoHS-compliant SOT-23 package
The CAT859 and CAT869 feature a RESET push-pull
output (active low) for the two pinout options.
APPꢃICATIOꢄS
■ Computers
The CAT853 and CAT863 feature an open drain RESET
output (active low). Both require a pull-up resistor on
the RESET output.
■ Servers
Fast transients on the power supply are ignored and
the output is guaranteed to be in the correct state at Vcc
levels as low as ꢀ.0V.
■ ꢃaptops
■ Cable modems
■ Wireless communications
■ ꢀmbedded control systems
■ White goods
■ Power meters
For Ordering Information details, see page 9.
■ Intelligent instruments
■ PDAs and handheld equipment
PIꢄ COꢄFIꢅꢁꢂATIOꢄ
THꢂꢀSHOꢃD SꢁFFIx SꢀꢃꢀCTOꢂ
3-Lead SOT23
3-Lead SOT23
ꢄominal Threshold Threshold Suffix
Voltage
4.38V
3.08V
2.93V
2.4V
Designation
1
1
RESET
GND
RESET
M
T
CAT853
CAT859
CAT863
CAT869
3
3
GND
V
CC
V
2
2
CC
S
C
PIꢄ DꢀSCꢂIPTIOꢄS
ꢄame Description
RESET Active low reset. RESET is asserted if VCC falls below the reset threshold and remains low for at least
ꢀ40ms after VCC rises above the reset threshold.
GND
VCC
Ground
Power supply voltage that is monitored.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc. No. MD-3026, Rev. D
ꢀ
CAT853, CAT863, CAT859, CAT869
BꢃOC DIAꢅꢂAMS
V
CC
V
CC
TOLERANCE
BIAS
+
–
RESET
V
CC
DIGITAL
DELAY
VOLTAGE
REFERENCE
CAT853
CAT863
GND
V
CC
V
CC
TOLERANCE
BIAS
+
–
V
CC
DIGITAL
DELAY
RESET
VOLTAGE
REFERENCE
CAT859
CAT869
GND
Doc. No. MD-3026, Rev. D
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
2
CAT853, CAT863, CAT859, CAT869
ABSOꢃꢁTꢀ MAxIMꢁM ꢂATIꢄꢅS(1)
Any pin with respect to ground
Input Current, VCC
-0.3V to +6.0V
20mA
Output Current, RESET
Rate of Rise, VCC
20mA
ꢀ00V/µs
Continuous Power Dissipation
Derate 4mW/ºC above 70ºC (SOT23) 320 mW
Operating Temperature Range
Storage Temperature Range
Lead Soldering Temperature (ꢀ0 sec)
ꢄote:
-40ºC to +85ºC
-65ºC to +ꢀ05ºC
300ºC
(ꢀ) Stresses above 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 outside of those listed in the operational sections of this specification
is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.
ꢀꢃꢀCTꢂICAꢃ CHAꢂACTꢀꢂISTICS
VCC = Full range, TA = -40ºC to +85ºC unless otherwise noted. Typical values at TA = +25ºC and VCC = 3.3V for the
C, S, T versions, VCC = 5V for the M version.
Parameter
Symbol Conditions
TA = 0ºC to +70ºC
Min
ꢀ.0
ꢀ.2
Typ(1)
Max
5.5
ꢁnits
VCC Range
V
TA = -40ºC to +85ºC
5.5
Supply Current
ICC
TA = -40ºC to +85ºC VCC < 3.6V, C, S, T
6
ꢀ5
µA
V
Reset
Threshold
Voltage
VTH
TA = +25ºC
M Threshold
4.3ꢀ
4.25
3.04
3.00
2.89
2.85
2.35
2.30
4.38
4.45
4.50
3.ꢀꢀ
3.ꢀ5
2.96
3.00
2.45
2.50
TA = -40ºC to +85ºC
TA = +25ºC
T Threshold
3.08
2.93
2.40
30
TA = -40ºC to +85ºC
TA = +25ºC
S Threshold
TA = -40ºC to +85ºC
TA = +25ºC
C Threshold
TA = -40ºC to +85ºC
Reset
ppm/ºC
Threshold
Tempco
VCC to Reset
Delay
VCC = VTH to (VTH - ꢀ00 mV)
TA = -40ºC to +85ºC
20
µs
Reset Active
Timeout Period
ꢀ40
240
460
ms
VCC = VTH min, ISINK = ꢀ.2mA
VCC > ꢀ.0V, ISINK = 50µA
0.4
0.3
RESET Output
Voltage Low
VOL
VOH
V
V
RESET Output
Voltage High
VCC = VTH max, ISOURCE = -500µA
(for CAT859/869 only)
0.8 VCC
ꢄote:
(ꢀ) Production testing done at TA = +25ºC; limits over temperature guaranteed by design only.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc No. MD-3026, Rev. D
3
CAT853, CAT863, CAT859, CAT869
TꢆPICAꢃ OPꢀꢂATIꢄꢅ CHAꢂACTꢀꢂISTICS
VCC = Full range, TA = -40ºC to +85ºC unless otherwise noted. Typical values at TA = +25ºC, VCC = 3.3V for C, S, T
versions, and VCC = 5V for the M version.
POWER-UP RESET TIMEOUT
VS. TEMPERATURE
SUPPLY CURRENT VS. TEMPERATURE
(NO LOAD)
260
240
220
200
180
160
12
10
8
V
=5.5V
V
V
=5V
CC
CC
=3.6V
6
CC
4
V
=2.5V
100
CC
2
0
-50
0
50
150
-50
0
50
100
150
TEMPERATURE (°C)
TEMPERATURE (°C)
POWER-DOWN RESET DELAY
VS. TEMPERATURE
NORMALIZED RESET THRESHOLD
VS. TEMPERATURE
1.0002
1
14
12
10
8
0.9998
0.9996
0.9994
0.9992
0.999
0.9988
6
4
2
0
-50
0
50
100
150
0
20
40
60
80
100 120
TEMPERATURE (°C)
TEMPERATURE (°C)
Doc. No. MD-3026, Rev. D
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
4
CAT853, CAT863, CAT859, CAT869
DꢀTAIꢃꢀD DꢀSCꢂIPTIOꢄS
ꢂꢀSꢀT TIMIꢄꢅ
TheresetsignalisassertedlowfortheCAT853,CAT863,
CAT859,andCAT869whenthepowersupplyvoltagefalls
below the threshold trip voltage and remains asserted
for at least ꢀ40ms after the power supply voltage has
risen above the threshold.
Threshold
Voltage
Power
Supply
Voltage
5V
0V
Reset Timeout Period
140ms
minimum
5V
0V
RESET
Figure 1. ꢂeset Timing Diagram
VCC TꢂAꢄSIꢀꢄT ꢂꢀSPOꢄSꢀ
The CAT853, CAT863, CAT859, and CAT869 protect
µPs against brownout failure. Short duration transients
of 4µsec or less and ꢀ00mV amplitude typically do not
cause a false RESET.
As the amplitude of the transient goes further below
the threshold (increasing VTH - VCC), the maximum
pulse duration decreases. In this test, the VCC starts
from an initial voltage of 0.5V above the threshold and
drops below it by the amplitude of the overdrive voltage
(VTH - VCC).
Figure2showsthemaximumpulsedurationofnegative-
going VCC transients that do not cause a reset condition.
“C”THRESHOLD
“M”THRESHOLD
Figure 2. Maximum Transient Duration Without Causing a Reset Pulse vs. Reset Comparator Overdrive
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc No. MD-3026, Rev. D
5
CAT853, CAT863, CAT859, CAT869
VAꢃID ꢂꢀSꢀT WITH VCC ꢁꢄDꢀꢂ 1.0V
To ensure that the CAT859 and CAT869 RESET pin
is in a known state when VCC is under 1.0V, a > 10kΩ
pull-down resistor between RESET pin and GND is
recommended.
Power
Supply
V
CC
CAT8x9
RESET
GND
Figure 3. ꢂꢀSꢀT Valid with VCC ꢁnder 1.0V
BI-DIꢂꢀCTIOꢄAꢃ ꢂꢀSꢀT PIꢄ IꢄTꢀꢂFACIꢄꢅ
The CAT859 and CAT869 can interface with µP/µC
bi-directional reset pins by connecting a 4.7kΩ resistor
in series with the CAT859 and CAT869 reset output and
the µP/µC bi-directional reset pin.
BUF
Buffered
RESET
Power
Supply
V
CC
V
CC
CAT8x9
RESET
GND
µP
(For example:
68HC11)
RESET
INPUT
GND
Bi-directional
I/O Pin
Figure 4. Bi-directional ꢂeset Pin Interfacing
Doc. No. MD-3026, Rev. D
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
6
CAT853, CAT863, CAT859, CAT869
CAT853 AꢄD CAT863 OPꢀꢄ-DꢂAIꢄ ꢂꢀSꢀT
APPꢃICATIOꢄ
The CAT853 and CAT863 features an open-drain
RESET output and therefore need a pull-up resistor on
the output for proper operation, as shown on Figure 5.
An advantage of the open-drain output includes the
ability to “wireAND” several outputs together to form an
inexpensive logic circuit. It is also possible to have the
pull-up resistor connected to a different supply which
can be higher than the CAT8x3 VCC pin. The value of
the pull-up resistor is not critical in most applications,
typical values being between 5kΩ and 10kΩ.
Power
Supply
VCC
5kΩ
VCC
CAT8x3
µP
RESET
GND
RESET
INPUT
GND
Figure 5. Typical CAT8x3 Open-Drain Circuit Configuration
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc No. MD-3026, Rev. D
7
CAT853, CAT863, CAT859, CAT869
PACꢇAꢅꢀ OꢁTꢃIꢄꢀ DꢂAWIꢄꢅ
SOT-23 3-ꢃead (TB)
SYMBOL
MIN
0.89
0.013
0.37
0.085
2.80
2.10
1.20
NOM
MAX
1.12
0.10
0.50
0.18
3.04
2.64
1.40
D
A
A1
b
3
c
D
E1
E
E
E1
e
0.95 BSC
1.90 BSC
0.400 REF
0.540 REF
1
2
e1
L
e
e1
L1
θ
0º
8º
TOP VIEW
A
θ
b
L1
L
c
A1
SIDE VIEW
END VIEW
For current Tape and Reel information, download the PDF file from:
www.catsemi.com/documents/tapeandreel.pdf
ꢄotes:
(ꢀ) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC standard TO-236.
Doc. No. MD-3026, Rev. D
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
8
CAT853, CAT863, CAT859, CAT869
ꢀxAMPꢃꢀ OF OꢂDꢀꢂIꢄꢅ IꢄFOꢂMATIOꢄ (1) (2) (3)
Prefix
Device #
Suffix
CAT
859
S
TB
I
–
G
T10
Company ID
Threshold Level
M: 4.38V
Lead Finish
G: NiPdAu (PPF)
Device Type
T: 3.08V
S: 2.93V
C: 2.40V
853: Open Drain / Active Low Output
863: Open Drain / Active Low Output
859: Push-Pull / Active Low Output
869: Push-Pull / Active Low Output
Temperature Range
I = Industrial (-40ºC to 85ºC)
Package Type
T: Tape & Reel
3: 3000/Reel
TB: SOT-23(1)
10: 10000/Reel
TOP MAꢂꢇIꢄꢅ
SOT-23 ꢂoHS
SOT-23 ꢂoHS
Part and Threshold
CAT859C
ꢄiPdAu Finish(4) (5)
Part and Threshold
CAT853C
ꢄiPdAu Finish(4) (5)
CAT859T
CAT853T
RSYM
RUYM
CAT859S
CAT853S
CAT859M
CAT853M
CAT869T
CAT863T
CAT869S
RTYM
CAT863S
RVYM
CAT869M
CAT863M
OꢂDꢀꢂIꢄꢅ PAꢂT ꢄꢁMBꢀꢂ (6)
CAT859CTBI-G
CAT859TTBI-G
CAT859STBI-G
CAT859MTBI-G
CAT869TTBI-G
CAT869STBI-G
CAT869MTBI-G
CAT853CTBI-G
CAT863TTBI-G
CAT853TTBI-G
CAT853STBI-G
CAT853MTBI-G
CAT863STBI-G
CAT863MTBI-G
ꢄotes:
(ꢀ) All packages are RoHS-compliant (Lead-free, Halogen-free).
(2) The device used in the example above is a CAT859STBI-GTꢀ0 (Push-Pull / Active Low Output, trip level of 2.85V to 3.00V NiPdAu, Tape
and Reel).
(3) For additional package and temperature options, please contact your nearest Catalyst Semiconductor Sales office.
(4) The “YM” in the SOT-23 package marking indicates the Year and Month of production.
(5) All NiPdAu devices will be marked to indicate product type. Threshold and full part numbers will be provided on box and reel labels as well
as all Shipping documents.
(6) For special threshold and package options, contact factory.
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Doc No. MD-3026, Rev. D
9
ꢂꢀVISIOꢄ HISTOꢂꢆ
Date
Rev. ꢂeason
ꢀ0/ꢀꢀ/2006
A
B
Initial Issue CAT859, CAT869
Added CAT853, CAT863
Update Example of Ordering Information
Update Top Marking
05/04/2007
Update Ordering Part Number
Add Threshold Level - C: 2.40V
Update Package Outline Drawing
Add MD- to document number
0ꢀ/ꢀ7/2007
0ꢀ/30/2008
C
D
Added Block Diagrams
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ARISING OUT OF ANY SUCH USE OR APPLICATION, INCLUDING BUT NOT LIMITED TO, CONSEQUENTIAL OR INCIDENTAL DAMAGES.
Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
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Catalyst Semiconductor advises customers to obtain the current version of the relevant product information before placing orders. Circuit diagrams illustrate typical
semiconductor applications and may not be complete.
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Corporate Headquarters
2975 Stender Way
Santa Clara, CA 95054
Phone: 408.542.ꢀ000
Fax: 408.542.ꢀ200
www.catsemi.com
Document No: MD-3026
Revision:
D
Issue date:
0ꢀ/30/08
相关型号：
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