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CAT811RTBI-GT3

P1-P3P4-P6P7-P9
© Semiconductor Components Industries, LLC, 2015
July, 2015 − Rev. 3
1 Publication Order Number:
CAT811/D
CAT811
4-Pin Microprocessor
Power Supply Supervisor
with Manual Reset
Description
The CAT811 is a microprocessor supervisory circuit that monitors
power supplies. The CAT811 is a direct replacement for the MAX811
in applications operating over the industrial temperature range and has
a manual reset input.
These devices generate a reset signal, which is asserted while the
power supply voltage is below a preset threshold level and for at least
140 ms after the power supply level has risen above that level. The
underlying floating gate technology, Analog EEPROM used by
ON Semiconductor, makes it possible to offer any custom reset
threshold value. Seven industry standard threshold levels are offered
to support +5.0 V, +3.3 V, +3.0 V and +2.5 V systems. The CAT811
features a RESET push−pull output (active LOW).
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 1.0 V.
The CAT811 is fully specified over the industrial temperature range
(−40°C to 85°C) and is available in a compact 4−pin SOT−143
package.
Features
• Precision Monitoring of
+5.0 V (± 5%, ± 10%, ± 20%),
+3.3 V (± 5%, ± 10%)
• Manual Reset Input
• Output Configuration: Active LOW Reset
• Direct Replacements for the MAX811 in Applications Operating
over the Industrial Temperature Range
• Reset Valid down to V
CC
= 1.0 V
• 6 mA Power Supply Current
• Power Supply Transient Immunity
• Available in SOT−143 Packages with Sn or NiPdAu Green Lead
Finishes
• Industrial Temperature Range: −40°C to +85°C
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
• Computers, Servers, Laptops and Cable Modems
• Wireless Communications
• Embedded Control Systems
• White Goods, Power Meters
• Intelligent Instruments
• PDAs and Handheld Equipment
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PIN CONFIGURATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
ORDERING INFORMATION
SOT−143
BI SUFFIX
CASE 527AF
(Top View)
RESET
GND
V
CC
MR
1
2
4
3
1
MARKING DIAGRAM
XXX = Specific Device Code
M = Month Code
G = Pb−Free Package
(Note: Microdot may be in either location)
XXXMG
G
CAT811
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2
Table 1. THRESHOLD SUFFIX SELECTOR DESCRIPTION
Nominal Threshold Voltage Threshold Suffix Designation
4.63 V L
3.08 V T
2.93 V S
Table 2. PIN DESCRIPTION
Pin Number Pin Name Description
1 GND Ground.
2 RESET Active LOW reset. RESET is asserted if V
CC
falls below the reset threshold and remains low for at
least 140 ms after V
CC
rises above the reset threshold.
3 MR Manual Reset Input. A logic LOW on MR asserts RESET. RESET remains active as long as MR is
LOW and for 140 ms after MR
returns HIGH. The active low input has an internal 20 kW pull−up resis-
tor. The input should be left open if not used.
4 V
CC
Power supply voltage that is monitored.
Figure 1. Block Diagrams
CAT811
+
–
RESET
&
DIGITAL
DELAY
TOLERANCE
BIAS
VOLTAGE
REFERENCE
GND
V
CC
V
CC
V
CC
RESET
MR
CAT811
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3
Table 3. ABSOLUTE MAXIMUM RATINGS
Parameters Ratings Units
Any pin with respect to ground −0.3 to +6.0 V
Input Current, V
CC
20 mA
Output Current RESET 20 mA
Rate of Raise, V
CC
100
V/ms
Continuous Power Dissipations
Derate 4 mW/°C above +70°C (SOT−143)
320 mW
Storage Temperature Range −65 to +105 °C
Operating Ambient Temperature Range −40 to +85 °C
Lead Soldering Temperature (10 seconds) +300 °C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
Table 4. ELECTRICAL OPERATING CHARACTERISTICS
(V
CC
= Full range, T
A
= −40°C to +85°C unless otherwise noted. Typical values at T
A
= +25°C and V
CC
= 5 V for the L version,
V
CC
= 3.3 V for the T/S versions.)
Parameter
Symbol Conditions Min Typ Max Units
V
CC
Range
T
A
= 0°C to +70°C 1.0 5.5
V
T
A
= −40°C to +85°C 1.2 5.5
Supply Current I
CC
T
A
= −40°C to +85°C
V
CC
< 5.5 V, L 8 20 mA
V
CC
< 3.6 V, S/T 6 15
Reset Threshold
Voltage
V
TH
L Threshold
T
A
= +25°C 4.56 4.63 4.70
V
T
A
= −40°C to +85°C 4.50 4.75
T Threshold
T
A
= +25°C 3.04 3.08 3.11
T
A
= −40°C to +85°C 3.00 3.15
S Threshold
T
A
= +25°C 2.89 2.93 2.96
T
A
= −40°C to +85°C 2.85 3.00
Reset Threshold
Tempco
30 ppm/°C
V
CC
to Reset Delay
(Note 3)
V
CC
= V
TH
to (V
TH
− 100 mV) 20
ms
Reset Active
Timeout Period
T
A
= −40°C to +85°C 140 240 400 ms
1. Production testing done at T
A
= +25°C; limits over temperature guaranteed by design only.
2. Glitches of 100 ns or less typically will not generate a reset pulse.
3. RESET
output for the CAT811.
P1-P3P4-P6P7-P9

CAT811RTBI-GT3

Mfr. #:
Buy CAT811RTBI-GT3
Manufacturer:
ON Semiconductor
Description:
Supervisory Circuits Reset Controller w/floating gate
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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