MAX16136 High-Precision Supervisory Datasheet

MAX16136 Datasheet, PDF, Equivalent


Part Number

MAX16136

Description

High-Precision Supervisory

Manufacture

Maxim Integrated

Total Page 16 Pages
Datasheet
Download MAX16136 Datasheet


MAX16136
Click here for production status of specific part numbers.
MAX16136
High-Precision Supervisory with Window
Watchdog and Overvoltage Indicator
General Description
The MAX16136, a low voltage, ±1% accurate window-de-
tector supervisor circuit monitors a single system supply
voltage and the integrity of code execution by a micro-
processor or microcontroller. This device features an ac-
tive-low, open-drain output that asserts whenever the
monitored supply rail falls outside of the factory-trimmed
undervoltage/overvoltage window threshold. The reset
output remain asserted for the programmed reset timeout
period after the monitored supply voltage falls within the
undervoltage/overvoltage window threshold.
The MAX16136 offers factory-trimmed voltage thresholds
from 0.5V to 5V in approximately 20mV increment. A va-
riety of factory trimmed undervoltage/overvoltage thresh-
olds from ±4% to ±11% are available to accommodate dif-
ferent supply voltages and tolerances.
A window-watchdog timer circuit monitors microprocessor
or microcontroller activity. During normal operation, the
microprocessor or microcontroller must repeatedly toggle
the watchdog input (WDI) low within the fast watchdog
timeout (tWD_F) and slow watchdog timeout (tWD_S). If
the microcontroller or microprocessor does not toggle WDI
within the window-timeout period, the supervisor asserts
the watchdog output (WDO) to signal that the system is
not executing code as expected. The watchdog output
pulse can be used to reset the microprocessor or micro-
controller, or it may be used to interrupt the system to
warn of execution errors.
In addition, the MAX16136 features an overvoltage fault
output (OV) that latches low when the monitored rail ex-
ceeds the overvoltage threshold. The latched output can
be cleared by pulling CLR low.
The MAX16136 is available in a small, 2mm x 2mm, 8-pin
TDFN side-wettable package and operates over the auto-
motive temperature range of -40°C to +125°C.
Applications
● Advanced Driver-Assistance Systems (ADAS)
● Automotive
● Multivoltage ASICs
● Servers
● Storage Equipment
Benefits and Features
● ±1% Accuracy
● Enables ASIL Compliance at System Level
• FMEDA Results Available Upon Request
● 0.5V to 5V Threshold Range with 20mV Increments
● ±4% to ±11% Undervoltage/Overvoltage Thresholds
● Latched Overvoltage Fault Output
● Clear Fault Input
● 5μs Overvoltage Fault Delay
● Window Watchdog Timeout
● Factory-Set Reset Timeout
● Open-Drain Reset Output
● TDFN-8 Side-Wettable Package
● -40°C to +125°C Operating Temperature Range
Ordering Information appears at end of data sheet.
Typical Application Circuit
1.71V TO 5.5V
VBAT
DC-DC
CIN
IN OUT
EN
10kΩ
COUT
0.1µF
µC
VDD
MAX16136
OV
IN
RST
WDO
CLR
GND
WDI
VCC
RST µC
NMI
I/O GND
19-100580; Rev 0; 6/19

MAX16136
MAX16136
High-Precision Supervisory with Window
Watchdog and Overvoltage Indicator
Absolute Maximum Ratings
VDD to GND.............................................................. -0.3V to +6V
IN, WDO, RST, CLR, OV, WDI to GND.................... -0.3V to +6V
Input/Output Continuous Current, WDO, RST, CLR, OV, WDI
........................................................................................... ±20mA
Continuous Power Dissipation (TA = +70°C)
TDFN (derate 11.7mW/°C above 70°C) .................... 937.9mW
Operating Temperature Range .......................... -40°C to +125°C
Junction Temperature ....................................................... +150°C
Soldering Temperature (Reflow)....................................... +260°C
Storage Temperature Range ..............................-65°C to +150°C
Lead Temperature (Soldering, 10s) .................................. +300°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 rating conditions for extended periods may
affect device reliability.
Package Information
8 TDFN
Package Code
T822Y+3C
Outline Number
21-100185
Land Pattern Number
90-100070
Thermal Resistance, Four-Layer Board:
Junction to Ambient (θJA)
Junction to Case (θJC)
85.3°C/W
8.9°C/W
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board.
For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
www.maximintegrated.com
Maxim Integrated | 2


Features Click here for production status of spec ific part numbers. MAX16136 High-Preci sion Supervisory with Window Watchdog a nd Overvoltage Indicator General Descr iption The MAX16136, a low voltage, ±1 % accurate window-detector supervisor c ircuit monitors a single system supply voltage and the integrity of code execu tion by a microprocessor or microcontro ller. This device features an active-lo w, open-drain output that asserts whene ver the monitored supply rail falls out side of the factory-trimmed undervoltag e/overvoltage window threshold. The res et output remain asserted for the progr ammed reset timeout period after the mo nitored supply voltage falls within the undervoltage/overvoltage window thresh old. The MAX16136 offers factory-trimme d voltage thresholds from 0.5V to 5V in approximately 20mV increment. A variet y of factory trimmed undervoltage/overv oltage thresholds from ±4% to ±11% ar e available to accommodate different su pply voltages and tolerances. A window-watchdog timer circuit moni.
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