MAX6886 MAXIM [Maxim Integrated Products], MAX6886 Datasheet - Page 6

• Manufacturer Part Number: MAX6886
• Description: Pin-Selectable, Hex Power-Supply Supervisory Circuit
• Manufacturer: MAXIM [Maxim Integrated Products]

Pin-Selectable, Hex Power-Supply
Supervisory Circuit
6
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PIN
10
11
12
13
14
15
16
17
18
19
20
—
4
5
6
7
8
9
MARGIN
NAME
GND
DBP
WDI
TH4
TH3
TH2
TH1
TH0
V
MR
IN6
IN5
IN4
IN3
IN2
IN1
EP
CC
Ground
Watchdog Timer Input. Logic input for the watchdog timer function. If WDI is not strobed with a valid
low-to-high or high-to-low transition within the selected timeout period, RESET asserts. WDI is
internally pulled down to GND through a 10µA current sink.
Active-Low Manual Reset Input. Pull MR low to assert RESET. RESET will remain asserted for its
preset/adjustable reset timeout period when MR is driven high. Leave MR unconnected or connect to
DBP if unused. MR is internally pulled up to DBP through a 10µA current source.
Margin Input. When MARGIN is pulled low, RESET is held in its existing state independent of
subsequent changes in monitored input voltages or the watchdog timer expiration. MARGIN is
internally pulled up to DBP through a 10µA current source. MARGIN overrides MR if both are asserted
at the same time.
Threshold Selection Input 4. Logic input to select desired threshold. Connect TH4 to GND or DBP.
See Table 2 for available thresholds. Input has no internal pullup or pulldown.
Threshold Selection Input 3. Logic input to select desired threshold. Connect TH3 to GND or DBP.
See Table 2 for available thresholds. Input has no internal pullup or pulldown.
Threshold Selection Input 2. Logic input to select desired threshold. Connect TH2 to GND or DBP.
See Table 2 for available thresholds. Input has no internal pullup or pulldown.
Threshold Selection Input 1. Logic input to select desired threshold. Connect TH1 to GND or DBP.
See Table 2 for available thresholds. Input has no internal pullup or pulldown.
Threshold Selection Input 0. Logic input to select desired threshold. Connect TH0 to GND or DBP.
See Table 2 for available thresholds. Input has no internal pullup or pulldown.
Internal Power-Supply Voltage. Bypass V
device as possible. V
highest of the monitored IN1–IN4 voltages. Do not use V
externally supply V
Digital Bypass Voltage. The internally generated voltage at DBP supplies power to internal logic and
output RESET. Connect a 1µF capacitor from DBP to GND as close to the device as possible. Do not
use DBP to supply power to external circuitry.
Input Voltage Detector 6. Select the undervoltage threshold using TH0–TH4. See Table 2. IN6 cannot
supply power to the device. For improved noise immunity, bypass IN6 to GND with a 0.1µF capacitor
installed as close to the device as possible.
Input Voltage Detector 5. Select the undervoltage threshold using TH0–TH4. See Table 2. IN5 cannot
supply power to the device. For improved noise immunity, bypass IN5 to GND with a 0.1µF capacitor
installed as close to the device as possible.
Input Voltage Detector 4. Select the undervoltage threshold using TH0–TH4. See Table 2. For
improved noise immunity, bypass IN4 to GND with a 0.1µF capacitor installed as close to the device
as possible. Power the device through IN1–IN4 or V
Input Voltage Detector 3. Select the undervoltage threshold using TH0–TH4. See Table 2. For
improved noise immunity, bypass IN3 to GND with a 0.1µF capacitor installed as close to the device
as possible. Power the device through IN1–IN4 or V
Input Voltage Detector 2. Select the undervoltage threshold using TH0–TH4. See Table 2. For
improved noise immunity, bypass IN2 to GND with a 0.1µF capacitor installed as close to the device
as possible. Power the device through IN1–IN4 or V
Input Voltage Detector 1. Select the undervoltage threshold using TH0–TH4. See Table 2. For
improved noise immunity, bypass IN1 to GND with a 0.1µF capacitor installed as close to the device
as possible. Power the device through IN1–IN4 or V
Exposed Paddle. Internally connected to GND. Connect EP to GND or leave floating.
CC
CC
, see the Powering the MAX6886 section.
supplies power to the internal circuitry. V
CC
to GND with a 1µF ceramic capacitor as close to the
FUNCTION
CC
CC
CC
CC
Pin Description (continued)
(see the Powering the MAX6886 section).
(see the Powering the MAX6886 section).
(see the Powering the MAX6886 section).
(see the Powering the MAX6886 section).
CC
to supply power to external circuitry. To
CC
is internally powered from the