Data Sheet
Open-Drain Microprocessor
Supervisory Circuit in 4-Lead SOT-143
ADM6315
FEATURES
FUNCTIONAL BLOCK DIAGRAM
VCC
GND
VREF
ADM6315
RESET
RESET
CIRCUITRY
MR
DEBOUNCE
00081-001
Specified over temperature
Low power consumption (5 μA typical)
Precision voltage monitor of voltages from 2.5 V to 5 V
at 100 mV increments
Reset assertion down to VCC > 1 V
Reset timeout periods: 1 ms, 20 ms, 140 ms,
or 1120 ms (minimum)
Built-in manual reset
Pin compatible with the ADM811
Available in SOT-143 package
Qualified for automotive applications
Figure 1.
APPLICATIONS
VCC
SYSTEM POWER
ADM6315
RESET
MR
10kΩ
MICROPROCESSOR
SYSTEM
RESET
GND
GND
00081-011
Microprocessor systems
Controllers
Intelligent instruments
Automotive systems
Safety systems
Portable instruments
Figure 2. Typical Operating Circuit
GENERAL DESCRIPTION
The ADM6315 is a reliable voltage-monitoring device that is
suitable for use in most voltage-monitoring applications.
The ADM6315 is designed to monitor as little as a 1.8%
degradation of a power supply voltage. The ADM6315 can
monitor all voltages (at 100 mV increments) from 2.5 V to 5 V.
Included in this circuit is a debounced manual reset input.
RESET can be activated using an ordinary switch (pulling MR
low), a low input from another digital device, or a degradation
of the supply voltage.
Rev. G
The manual reset function is very useful, especially if the circuit
in which the ADM6315 is operating enters into a state that can
be detected only by the user. Allowing the user to reset a system
manually can reduce the damage or danger that could otherwise
be caused by an out-of-control or locked-up system.
The ADM6315 is available in a cost- and space-efficient
SOT-143 package.
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