LTC1728ES5-3.3#TRM Linear Technology, LTC1728ES5-3.3#TRM Datasheet - Page 7

• Manufacturer Part Number: LTC1728ES5-3.3#TRM
• Description: IC TRPL SUPPLY MONITOR TSOT23-5
• Manufacturer: Linear Technology
• Type: Multi-Voltage Supervisorr

Specifications of LTC1728ES5-3.3#TRM

• Number Of Voltages Monitored: 3
• Output: Open Drain or Open Collector
• Reset: Active Low
• Reset Timeout: 140 ms Minimum
• Voltage - Threshold: 1.683V, 3.086V, Adj
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-5, TSOT-5, TSOP-5
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: LTC1728ES5-3.3#TRMTR

pin FuncTions
V
Pin. (3V Sense Input and Power Supply Pin for LTC1728-
1.8.) This pin provides power to the part when the voltage
on V
Bypass to ground with a ≥ 0.1µF ceramic capacitor.
V
This pin is used on the LTC1727-5/LTC1728-5 to provide
power to the part when the voltage on V
than the voltage on V
ceramic capacitor.
V
Pin. This pin is used on the LTC1727-2.5/LTC1728-2.5 to
provide power to the part when the voltage on V
greater than the voltage on V
a ≥0.1µF ceramic capacitor.
V
Pin. This pin is used on the LTC1728-1.8/LTC1728-3.3 to
provide power to the part when the voltage on V
greater than the voltage on V
a ≥0.1µF ceramic capacitor.
V
used, it can be tied to either V
GND (Pin 4/Pin 2): Ground.
CC3
CC5
CC25
CC18
CCA
CC3
(Pin 3/Pin 3): 1V Sense, High Impedance Input. If un-
(Pin 1/Pin 5): 3.3V Sense Input and Power Supply
(Pin 2/Pin 4): 5V Sense Input and Power Supply Pin.
(Pin 2/Pin 4): 2.5V Sense Input and Power Supply
(Pin 2/Pin 4): 1.8V Sense Input and Power Supply
is greater than the voltage on V
CC3
. Bypass to ground with a ≥0.1µF
(LTC1727/LTC1728)
CC3
CC3
CC3
. Bypass to ground with
. Bypass to ground with
or V
CC5
CC5
/V
CC5
/V
CC25
CC25
is greater
/V
/V
CC25
CC18
CC18
CC18
.
is
is
.
COMPA (Pin 5): V
Active high, open-drain logic output with weak pull-up to
V
V
pins are too low to power the internal bandgap reference
(typically < 2.0V). Can be pulled greater than V
an external pull-up.
RST (Pin 6/Pin 1): Reset Logic Output. Active low, open-
drain logic output with weak pull-up to V
up greater than V
when one or all of the supplies are below trip thresholds
and held for 200ms after all supplies become valid.
COMP5 (Pin 7): V
LTC1727-5. Active high, open-drain logic output with weak
pull-up to V
be pulled greater than V
COMP25 (Pin 7): V
LTC1727-2.5. Active high, open-drain logic output with
weak pull-up to V
V
pull-up.
COMP3 (Pin 8): V
Active high, open-drain logic output with weak pull-up to
V
greater than V
CC3
CCA
RT25
CC3
. Asserted when V
. Asserted when V
is below V
. Can be pulled greater than V
CC3
CC3
. Asserted when V
RTA
CC3
CCA
CC3
using an external pull-up.
CC3
when interfacing to 5V logic. Asserted
LTC1727/LTC1728
or if both the V
Comparator Output for the LTC1727.
Comparator Output for the LTC1727.
CC5
CC25
CCA
. Asserted when V
CC3
CC3
is above V
Comparator Output for the
Comparator Output for the
is above V
using an external pull-up.
CC5
RTA
CC3
CC3
is above V
RT3
. Deasserted when
CC3
using an external
and V
. Can be pulled
CC25
. Can be pulled
CC5
CC3
is above
RT5
supply
using
. Can
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