MAX6459UTC-T Maxim Integrated, MAX6459UTC-T Datasheet - Page 6

• Manufacturer Part Number: MAX6459UTC-T
• Description: Supervisory Circuits
• Manufacturer: Maxim Integrated
• Series: MAX6457, MAX6458, MAX6459, MAX6460r

Specifications of MAX6459UTC-T

• Number Of Voltages Monitored: 2
• Monitored Voltage: 4 V to 28 V
• Undervoltage Threshold: 1.071 V
• Overvoltage Threshold: 1.151 V
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Supply Voltage - Max: 28 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-23
• Maximum Power Dissipation: 696 mW
• Minimum Operating Temperature: - 40 C
• Supply Current (typ): 6.5 uA
• Supply Voltage - Min: 4 V

High-Voltage, Low-Current Voltage Monitors in
SOT Packages
MAX6457–MAX6460
6
MAX6457 MAX6458 MAX6459 MAX6460
—
—
—
—
1
2
3
4
5
—
—
—
—
1
2
3
4
5
PIN
—
—
—
1
5
2
3
4
6
—
—
—
1
2
3
4
5
6
CLEAR
NAME
OUTA
OUTB
GND
OUT
REF
V
IN+
IN-
CC
MAX6457: Open-Drain Monitor Output. OUT requires an external pullup
resistor. OUT asserts low for V
when V
when V
MAX6458: Open-Drain Monitor Output. OUT requires an external pullup
resistor. OUT asserts low for V
when V
high after the timeout period (t
drops below V
MAX6460: Open-Drain Monitor Output. OUT requires an external pullup
resistor. OUT asserts low for V
when V
Open-Drain Monitor A Undervoltage Output. OUTA requires an external
pullup resistor. OUTA goes low when V
high when V
1.5V and 4V.
Open-Drain Monitor B Overvoltage Output. OUTB requires an external
pullup resistor. OUTB goes low when V
when V
below 4V.
Ground
Adjustable Undervoltage Monitor Threshold Input. Noninverting input for
MAX6460.
Adjustable Overvoltage Monitor Threshold Input. Inverting input for
MAX6460.
Clear Input. For V
Connect CLEAR to GND to make the latch transparent. CLEAR must be
low when powering up the device. Connect CLEAR to GND when not
used.
Reference. Internal 2.25V reference output. Connect REF to IN+ through
a voltage divider for active-low output. Connect REF to IN- through a
voltage divider for active-high output. REF can source up to 100µA and
sink up to 300nA. Leave REF floating when not used. REF output is
stable with capacitive loads from 0 to 50pF or greater than 1µF.
Supply Voltage
IN+
IN+
IN+
IN+
IN-
drops below V
drops below V
drops below V
exceeds V
drops below V
IN+
TH-
exceeds V
.
IN+
> V
TH+
TH+
TH-
TH-
.
IN-
TH-
TH+
. OUTB also goes low when V
. OUT goes high when V
, drive CLEAR high to latch OUT high.
and goes high after the timeout period (t
or when V
CC
CC
TP
CC
. OUTA also goes low for V
FUNCTION
) when V
between 1.5V and 4V. OUT asserts low
between 1.5V and 4V. OUT asserts low
between 1.5V and 4V. OUT asserts low
IN+
IN-
IN-
IN+
exceeds V
exceeds V
drops below V
exceeds V
Pin Description
IN+
TH+
TH+
TH+
is above V
. OUT goes
and goes high
TH-
CC
CC
Maxim Integrated
and V
between
and goes
drops
IN-
IN-
.
TP
)