CAT803 CATALYST [Catalyst Semiconductor], CAT803 Datasheet

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CAT803

Manufacturer Part Number
CAT803
Description
3-Pin Microprocessor Power Supply Supervisors
Manufacturer
CATALYST [Catalyst Semiconductor]
Datasheet

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PIn COnfIGuRATIOn
3-Pin Microprocessor Power Supply
Supervisors
FeATureS
APPLICATIOnS
© 2007 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Precision monitoring of
+5.0V (-5%, -10%, -20%),
+3.3V (-5%, -10%),
+3.0V (-10%) and
+2.5V (-5%) power supplies
Offered in three output configurations:
- CAT803: Open-Drain Active LOW reset
- CAT809: Push-Pull Active LOW reset
- CAT810: Push-Pull Active HIGH reset
Direct replacements for the MAX803, MAX809
and MAX810 in applications operating over the
industrial temperature range
reset valid down to V
6µA power supply current
Power supply transient immunity
Industrial temperature range: -40ºC to +85ºC
Available in RoHS-compliant SOT-23 and SC70
packages
Computers
Servers
Laptops
Cable modems
Wireless communications
embedded control systems
White goods
Power meters
Intelligent instruments
PDAs and handheld equipment
(RESET)
RESET
GND
1
2
3-Lead SOT23
3-Lead SC70
(CAT803)
(CAT810)
CAT809
CC
= 1.0V
3
V CC

DESCRIPTIOn
The CAT803, CAT809, and CAT80 are supervisory
circuits that monitor power supplies in digital systems. The
CAT803, CAT809, and CAT80 are direct replacements
for the MAX803, MAX809 and MAX80 in applications
operating over the industrial temperature range.
These devices generate a reset signal, which is asserted
while the power supply voltage is below a preset
threshold level and for at least 40 ms after the power
supply level has risen above that level. The underlying
floating gate technology, AE
Semiconductor, makes it possible to offer any custom
reset threshold value. Seven industry standard threshold
levels are offered to support +5.0V, +3.3V, +3.0V and
+2.5V systems.
The CAT803 has an open-drain RESET output (active
LOW). The CAT803 requires a pull-up resistor on the
reset output.
The CAT809 features a push-pull RESET output (active
LOW) and the CAT810 features a push-pull RESET
output (active HIGH).
Fast transients on the power supply are ignored and
the output is guaranteed to be in the correct state at V
levels as low as .0V.
The CAT803, CAT809, and CAT80 are available in both
the compact 3-pin SOT-23 and SC70 packages.
THRESHOLD SuffIX SELECTOR
for Ordering Information details, see page 11.
nominal Threshold
Voltage
CAT803, CAT809, CAT810
4.63V
4.38V
4.00V
3.08V
2.93V
2.63V
2.32V
Threshold Suffix
Designation
2(TM)
M
R
T
S
Z
L
J
used by Catalyst
Doc. No. 3004, Rev. X
cc

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CAT803 Summary of contents

Page 1

... Seven industry standard threshold levels are offered to support +5.0V, +3.3V, +3.0V and +2.5V systems. The CAT803 has an open-drain RESET output (active LOW). The CAT803 requires a pull-up resistor on the reset output. The CAT809 features a push-pull RESET output (active LOW) and the CAT810 features a push-pull RESET output (active HIGH) ...

Page 2

... CAT803, CAT809, CAT810 PIn DESCRIPTIOnS Pin number name CAT803 CAT809 CAT810    GND 2 2 — RESET Active LOW reset. RESET is asserted if V — — 2 RESET Active HIGH reset. RESET is asserted Doc. No. 3004, Rev. X Description Ground old and remains low for at least 40ms after V threshold ...

Page 3

... S Threshold T = -40ºC to +85º +25º Threshold T = -40ºC to +85º +25º Threshold T = -40ºC to +85º CAT803, CAT809, CAT810 = +25ºC and for the 2.5V for the Z version. CC Min Typ Max units .0 5.5 V .2 5 µA ...

Page 4

... Reset Threshold Tempco V to Reset Delay (Note 2) CC Reset Active Timeout Period RESET Output Voltage Low (Open-drain active LOW, CAT803 and push-pull, ac- tive LOW, CAT809) RESET Output Voltage High (Push-pull, active LOW, CAT809) RESET Output Voltage Low (Push-pull, active HIGH, CAT80) ...

Page 5

... V CC =2. 100 150 -50 1.0002 1 0.9998 0.9996 0.9994 0.9992 0.999 0.9988 100 150 5 CAT803, CAT809, CAT810 = +25ºC and for 2.5V for Z version. CC SUPPLY CURRENT VS. TEMPERATURE (NO LOAD, CAT8xxR/S/T/ =5. =3. 100 150 TEMPERATURE (˚C) NORMALIZED RESET THRESHOLD VS. TEMPERATURE 0 20 ...

Page 6

... CAT803, CAT809, CAT810 DETAILED DESCRIPTIOnS RESET TIMInG The reset signal is asserted LOW for the CAT803/ CAT809 and HIGH for the CAT80 when the power supply voltage falls below the threshold trip voltage and remains asserted for at least 40ms after the power supply voltage has risen above the threshold ...

Page 7

... Characteristics subject to change without notice CC Power Supply 10kΩ under 1.0V figure 4. RESET Valid with V CC BUF V CC RESET RESET INPUT GND Bi-directional I/O Pin 7 CAT803, CAT809, CAT810 V CC CAT810 RESET GND under 1.1V CC Buffered RESET V CC µP (For example: 68HC11) Doc No. 3004, Rev. X 10kΩ ...

Page 8

... CAT803 V pin. The value of the pull-up resistor CC is not critical in most applications, typical values being between 5kΩ and 10kΩ. Power Supply figure 6. Typical CAT803 Open-Drain Circuit Configuration Doc. No. 3004, Rev CAT803 RESET RESET ...

Page 9

... Catalyst Semiconductor, Inc. Characteristics subject to change without notice Millimeters Min Max 0.89 .2 0.03 0.0 0.37 0.50 0.085 0.8 2.80 3.04 .20 .40 0.89 .03 .78 2.05 2.0 2.64 0º 8º For current Tape and reel information, 0.275 0.4 download the PDf file from: www.catsemi.com/documents/tapeandreel.pdf 0.275 0.685 9 CAT803, CAT809, CAT810 Doc No. 3004, Rev. X ө ...

Page 10

... CAT803, CAT809, CAT810 PACkAGE InfORMATIOn SC70 (3-Lead Inches Min Max Plastic SC70 (3-Pin) A 0.035 0.0433 A 0.0000 0.0039 A2 0.035 0.0394 b 0.0059 0.008 c 0.0035 0.007 D 0.0709 0.0866 E 0.0453 0.053 E1 0.0709 0.0945 e 0.0255 BSC L 0.002 0.08 L 0.008 0.0226 notes: (1) This part is compliant with JEDEC specification MO-203. ...

Page 11

... T: 3.08V S: 2.93V R: 2.63V Z: 2.32V SOT-23 RoHS niPdAu (2) (2)(3) Finish PbSn Finish RPYM RNYM PBYM NRYM PDYM NSYM  CAT803, CAT809, CAT810 – G T10 T: Tape & Reel (1) 3: 3000/Reel 10: 10000/Reel Lead Finish Blank: Matte-Tin G: NiPdAu SC70 RoHS SC70 SC70 RoHS niPdAu (2) (2) Matte Finish ...

Page 12

... CAT803, CAT809, CAT810 ORDERInG PART nuMbER CAT803LSDI CAT803LSDI-G CAT803MSDI CAT803MSDI-G CAT803JSDI CAT803JSDI-G CAT803TSDI CAT803TSDI-G CAT803SSDI CAT803SSDI-G CAT803RSDI CAT803RSDI-G CAT803ZSDI CAT803ZSDI-G CAT803LTBI CAT803LTBI-G CAT803MTBI CAT803MTBI-G CAT803JTBI CAT803JTBI-G CAT803TTBI CAT803TTBI-G CAT803STBI CAT803STBI-G CAT803RTBI CAT803RTBI-G CAT803ZTBI CAT803ZTBI-G Doc. No. 3004, Rev. X CAT809LSDI CAT809LSDI-G CAT809MSDI CAT809MSDI-G ...

Page 13

... Correct Revision Number 0/7/2006 V Updated Top Marking Updated Detailed Description Adding CAT803 02/2/2007 W Updated Electrical Characteristics Updated Figure  Updated Ordering Information 03/20/2007 X Updated Detailed Descriptions © 2007 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice CAT803, CAT809, CAT810 3 Doc No. 3004, Rev. X ...

Page 14

Copyrights, Trademarks and Patents Trademarks and registered trademarks of Catalyst Semiconductor include each of the following: DPP ™ ™ MiniPot™ Quad Mode™ Catalyst Semiconductor has been issued U.S. and foreign patents and has patent applications pending that protect ...

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