MAX8216ESD Maxim Integrated Products, MAX8216ESD Datasheet - Page 6

• Manufacturer Part Number: MAX8216ESD
• Description: Supervisory Circuits 5/12/15V +/-Dedictd MPU Voltage Monitor
• Manufacturer: Maxim Integrated Products

Specifications of MAX8216ESD

• Number Of Voltages Monitored: 5
• Monitored Voltage: - 15 V, - 5 V, 5 V, 15 V
• Undervoltage Threshold: 4.521 V, 13.036 V, - 10.431 V
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Battery Backup Switching: No Backup
• Supply Voltage (max): 11 V
• Supply Voltage (min): 2.85 V
• Supply Current (typ): 250 uA
• Maximum Power Dissipation: 667 mW
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Power Fail Detection: No
• Overvoltage Threshold: 4 V or 13.434 V or - 10.749 V or - 13.434 V or - 4.482 V
• Output Type: Open Drain
• Mounting Style: SMD/SMT
• Package / Case: SOIC-14 Narrow
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

The MAX8215/MAX8216 contain 5 comparators (Figure
1). The comparator with its output labeled DOUT is dis-
tinguished from the others in that it can be set up to mon-
itor various voltages; each of the other 4 comparators
monitors a specific voltage. The DOUT comparator’s
noninverting input is available external to the device; its
inverting input is tied internally to the reference.
The MAX8215/MAX8216 comparators have open-drain
outputs. Thus, these devices require pull-up resistors
for proper operation. See the Typical Operating Circuit.
Open-drain outputs are useful for driving LEDs and for
situations in which the comparator outputs must be
connected together (i.e., wire-ORed).
Bypass V
±5V, ±12V (±15V) Dedicated
Microprocessor Voltage Monitors
_____________________Pin Description
6
_______________Detailed Description
10, 11,
12, 13
PIN
14
_______________________________________________________________________________________
1
2
3
4
5
6
7
8
9
DD
(+15V)
NAME
PGND
OUT4,
OUT3,
OUT2,
(-15V)
DOUT
OUT1
VREF
+12V
GND
-12V
+5V
V
DIN
with 0.1µF connected to PGND.
-5V
DD
Output of the internal 1.24V reference
Ground. Connect to PGND.
Input for monitoring +5V supply
Input for monitoring -5V supply
MAX8215 input for monitoring +12V
(MAX8216 input for monitoring +15V)
MAX8215 input for monitoring -12V
(MAX8216 input for monitoring -15V)
Noninverting input of the auxiliary
comparator. Its inverting input is tied
to the internal reference.
Power-supply ground. Bypass V
to this pin.
Output of the auxiliary comparator
Outputs of the four dedicated com-
parators
Power-supply positive voltage input.
Bypass to PGND.
FUNCTION
DD
When the voltage on a typical comparator’s input is
at or near the voltage on the other input, ambient
noise generally causes the comparator output to
oscillate. The most common way to eliminate this
problem is by using hysteresis. When the two com-
parator input voltages are equal, hysteresis causes
one comparator input voltage to move quickly past
the other, thus taking the input out of the region
where oscillation occurs. Standard comparators
need external resistors for hysteresis; these resistors
are not necessary when using any of the MAX8215
and MAX8216 comparators because hysteresis is
built in.
Figure 1. Block Diagram
__________Applications Information
( ) ARE FOR
MAX8216 ONLY.
+12V (+15V)
-12V (-15V)
+5V
-5V
DIN
1.24V REFERENCE
MAX8215
MAX8216
Hysteresis
OUT1
OUT2
OUT3
VREF
V
PGND
GND
OUT4
DOUT
DD