MAX6703TKA+TG071 Maxim Integrated, MAX6703TKA+TG071 Datasheet - Page 6
MAX6703TKA+TG071
Manufacturer Part Number
MAX6703TKA+TG071
Description
Supervisory Circuits Triple uPower Supervisor
Manufacturer
Maxim Integrated
Series
MAX6701, MAX6701A, MAX6702, MAX6702A, MAX6703, MAX6703A, MAX6704, MAX6705, MAX6705A, MAX6706, MAX6706A, MAX6707, MAX6707A, MAX6708r
Datasheet
1.MAX6703TKATG071.pdf
(12 pages)
Specifications of MAX6703TKA+TG071
Rohs
yes
Number Of Voltages Monitored
3
Monitored Voltage
2.5 V, 3 V, 3.3 V, 5 V
Undervoltage Threshold
4.5 V, Adjustable
Overvoltage Threshold
4.75 V, Adjustable
Output Type
Active Low, Open Drain
Manual Reset
Resettable
Watchdog
Watchdog
Battery Backup Switching
No Backup
Supply Voltage - Max
5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Chip Enable Signals
No
Maximum Power Dissipation
714 mW
Minimum Operating Temperature
- 40 C
Power Fail Detection
No
Supply Current (typ)
12 uA
Supply Voltage - Min
1.2 V
Figures 1, 2, and 3 are functional diagrams for the
MAX6705(A)/MAX6706(A)/MAX6707(A), MAX6704/
MAX6708, and MAX6701(A)/ MAX6702(A)/MAX6703(A),
respectively.
A microprocessor’s (µP’s) reset input starts the µP in a
known state. The MAX6701–MAX6708 assert reset dur-
ing power-up and prevent code execution errors during
power-down or brownout conditions.
On power-up, once V
anteed logic low of 0.4V or less. As V
Low-Voltage, SOT23 µP Supervisors with Power-
Fail In/Out, Manual Reset, and Watchdog Timer
*RESET active-high for the MAX6702(A)/MAX6706(A).
6
MAX6701(A)
MAX6702(A)
MAX6703(A)
_______________________________________________________________________________________
7*
8
4
5
MAX6704
—
—
—
8
CC
PIN
Detailed Description
MAX6705(A)
MAX6706(A)
MAX6707(A)
reaches 1V, RESET is a guar-
7*
—
—
8
MAX6708
Reset Output
CC
—
—
—
8
rises, RESET
RST_IN1
RST_IN2
RESET
NAME
WDO
Active-Low Watchdog Output (Open Drain or Push-Pull). WDO
is asserted whenever the watchdog times out and V
reset inputs are below their respective thresholds. WDO
deasserts after a valid WDI transition without a reset timeout
period. In the A versions, WDO deasserts without a timeout
delay when V
threshold. Pull MR low to assert WDO (MAX6701/MAX6702/
MAX6703/MAX6705/MAX6706/MAX6707 only). Pull MR low to
deassert WDO (MAX6701(A)/MAX6702(A)/MAX6703(A)/
MAX6705(A)/MAX6706(A)MAX6707(A) only).
Active-High Reset Output (Push-Pull). RESET changes from low
to high when the V
threshold (or RST_IN1/RST_IN2 for MAX6701(A)/MAX6702(A)/
MAX6703(A), MR is pulled low, or the watchdog triggers a
reset (MAX6704 only). RESET remains high for the reset
timeout period after the reset conditions are terminated.
Input for User-Adjustable V
for second internal reset comparator. Connect this pin to an
external resistive-divider network to set the reset threshold
voltage; 0.62V (typ) threshold. Connect to V
Reset is asserted when either V
below threshold.
Input for User-Adjustable V
for third internal reset comparator. Connect this pin to an
external resistive-divider network to set the reset threshold
voltage; 0.62V (typ) threshold. Connect to V
Reset is asserted when either V
below threshold.
stays low. After V
the reset threshold, an internal timer holds RESET low
for about 200ms. RESET pulses low whenever V
below the reset threshold, including brownout condi-
tions. If a brownout occurs in the middle of a previously
initiated reset pulse, the pulse continues for at least
another 140ms. On power-down, once V
the reset threshold, RESET stays low and is guaranteed
to be 0.4V or less, until V
The MAX6702(A)/MAX6704/MAX6706(A)/MAX6708
active-high RESET output is the complement of the
RESET output, and is guaranteed to be valid with V
down to 1V.
CC
Pin Description (continued)
, RST_IN1, and RST_IN2 rises above its
CC
input drops below the selected reset
CC
, RST_IN1, or RST_IN2 rise above
FUNCTION
CC2
CC3
CC
CC
CC
Monitor. High-impedance input
Monitor. High-impedance input
drops below 1V.
, RST_IN1, or RST_IN2 are
, RST_IN1, or RST_IN2 are
CC
CC
when not used.
when not used.
CC
CC
falls below
or the
CC
dips
CC