Maxim MAX6380UR37-T, MAX6380UR33-T, MAX6380UR34-T, MAX6380UR35-T, MAX6379UR37-T Datasheet
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General Description
The MAX6375–MAX6380 are ultra-low-power circuits
used for monitoring battery, power-supply, and regulated system voltages. Each detector contains a precision
bandgap reference, comparator, and internally trimmed
resistors that set specified trip threshold voltages.
These devices provide excellent circuit reliability and
low cost by eliminating external components and
adjustments when monitoring nominal system voltages
from 2.5V to 5V.
These circuits perform a single function: they assert an
output signal whenever the VCCsupply voltage falls
below a preset threshold. The devices are differentiated
by their output logic configurations and preset threshold voltages. The MAX6375/MAX6378 (push-pull) and
MAX6377/MAX6380 (open-drain) have an active-low
output (OUT is logic low when VCCis below VTH). The
MAX6376/MAX6379 have an active-high push-pull output (OUT is logic high when VCCis below VTH). All
parts are guaranteed to be in the correct output logic
state for VCCdown to 1V. The detector is designed to
ignore fast transients on VCC. The MAX6375/MAX6376/
MAX6377 have voltage thresholds between 2.20V and
3.08V in approximately 100mV increments. The
MAX6378/MAX6379/MAX6380 have voltage thresholds
between 3.30V and 4.63V in approximately 100mV
increments.
Ultra-low supply current of 500nA (MAX6375/MAX6376/
MAX6377) makes these parts ideal for use in portable
equipment. All six devices are available in a space-saving SC70 package or in a tiny SOT23 package.
Applications
Precision Battery Monitoring
Load Switching/Power Sequencing
Power-Supply Monitoring in Digital/Analog Systems
Portable/Battery-Powered Equipment
Features
♦ Ultra-Low 500nA Supply Current
(MAX6375/MAX6376/MAX6377)
♦ Thresholds Available from 2.20V to 4.63V in
Approximately 100mV Increments
♦ ±2.5% Threshold Accuracy Over Temperature
♦ Low Cost
♦ Available in Three Versions: Push-Pull OUT,
Push-Pull OUT, and Open-Drain OUT
♦ Power-Supply Transient Immunity
♦ No External Components
♦ Available in Either a 3-Pin SC70
or 3-Pin SOT23 Package
MAX6375–MAX6380
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
________________________________________________________________ Maxim Integrated Products 1
Pin Configuration
19-1721; Rev 2; 2/03
*
The MAX6375/MAX6376/MAX6377 are available in factory-preset thresholds from 2.20V to 3.08V, in approximately 0.1V increments. The MAX6378/MAX6379/MAX6380 are available in
factory-preset thresholds from 3.30V to 4.63V, in approximately
0.1V increments. Choose the desired threshold suffix from
Table 1 and insert it in the blank spaces following R. There are
21 standard versions, with a required order increment of 2500
pieces. Sample stock is generally held on the standard versions
only (see the Selector Guide). The required order increment is
10,000 pieces for nonstandard versions (Table 2). Contact factory for availability. All devices available in tape-and-reel only.
Ordering Information
Selector Guide appears at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Ordering information continued at end of data sheet
PART* TEMP RANGE PIN-PACKAGE
MAX6375UR _ _ -T -40°C to +85°C 3 SOT23-3
MAX6375XR _ _ -T -40°C to +85°C 3 SC70-3
MAX6376UR _ _ -T -40°C to +85°C 3 SOT23-3
MAX6376XR _ _ -T -40°C to +85°C 3 SC70-3
TOP VIEW
3
OUT(OUT)
V
CC
GND
1
MAX6375UR–
2
MAX6380UR
SOT23-3
1
GND
MAX6375XR–
MAX6380XR
OUT(OUT)
( ) ARE FOR MAX6376/MAX6379 ONLY.
2
SC70-3
V
3
CC
MAX6375–MAX6380
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VCC= full range, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C and VCC= 3V.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Terminal Voltage (with respect to GND)
V
CC
...........................................................................-0.3V to +6V
OUT, OUT (push-pull) ................................-0.3V to (V
CC
+ 0.3V)
OUT (open-drain) .....................................................-0.3V to +6V
Input Current (V
CC
).............................................................20mA
Output Current (OUT, OUT) ................................................20mA
Continuous Power Dissipation (T
A
= +70°C)
3-Pin SC70 (derate 2.17mW/°C above +70°C)...........174mW
3-Pin SOT23 (derate 4mW/°C above +70°C)..............320mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: Production tested at +25°C only. Overtemperature limits are guaranteed by design, not production tested.
42VCC= (VTH- 100mV) to (VTH+ 100mV)
I
SINK
= 100µA, VCC≥ 1.2V, OUT asserted
0.4
V
OL
OUT Output Voltage
(MAX6375/MAX6377/
MAX6378/MAX6380)
I
SINK
= 1.6mA, VCC> 2.1V, OUT asserted
0.3
V
MAX6375/76/77 only, VCC= 3.0V for VTH≤ 2.93V,
VCC= 3.2V for VTH> 2.93V, no load
I
SOURCE
= 500µA, VCC= 3.2V, MAX6375 only
V
OH
I
SOURCE
= 800µA, VCC= 4.5V, VTH≤ 4.38V
OUT Output Voltage
(MAX6375/MAX6377)
I
SOURCE
= 800µA, VCC= V
TH(MAX)
, VTH≥ 4.5V
V
TA= -40°C to +85°C
TA= 0°C to +70°C
CONDITIONS
ppm/°C40∆VTH/°CVoltage Threshold Tempco
VVCCOperating Range
UNITSMIN TYP MAXSYMBOLPARAMETER
VCC= (VTH+ 100mV) to (VTH- 100mV)
µs
20
Propagation Delay
MAX6375/MAX6376/MAX6377 6.3
MAX6378/MAX6379/MAX6380 9.5
mV
Voltage Threshold
Hysteresis
0.1 µA
Open-Drain OUT Output
Leakage Current
0.8 ✕V
CC
0.8 ✕V
CC
0.8 ✕V
CC
1.0 5.5
1.2 5.5
TA= -40°C to +85°C
TA= +25°C
Table 1
VTH- 2.5% VTHVTH+ 2.5%
V
TH
V
VTH-1.5% VTHVTH+1.5%
Voltage Threshold
VCC= 5.5V, no load
I
CC
Supply Current
0.5 1.0
µA
1.0 1.75
I
SOURCE
= 500µA, VCC≥ 2.1V, OUT asserted
0.8 ✕V
CC
0.8 ✕V
CC
I
SINK
= 1.2mA, VCC≥ 3.2V, OUT not asserted,
MAX6376 only
0.3
I
SOURCE
= 50µA, VCC≥ 1.2V, OUT asserted
V
OH
V
I
SINK
= 3.2mA, VCC≥ 4.5V, OUT not asserted,
VTH≤ 4.38V
0.4
I
SINK
= 3.2mA, VCC= V
TH(MAX)
, VTH≥ 4.5V 0.4
V
OL
OUT Output Voltage
(MAX6376/MAX6379)
MAX6375–MAX6380
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
______________________________________________________________________________________ 3
__________________________________________Typical Operating Characteristics
(V
CC
= 5V, TA = +25°C, unless otherwise noted.)
Pin Description
SUPPLY CURRENT vs. TEMPERATURE
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
SUPPLY CURRENT (µA)
0.2
0.1
0
-40 0-20 20 40 60 80
VCC = 5V
VCC = 3.3V
VCC = 1.2V
TEMPERATURE (°C)
PROPAGATION DELAY (RISING)
vs. TEMPERATURE
140
120
100
80
VOD = 10mV
VOD = 20mV
MAX6375-01
PROPAGATION DELAY (µs)
MAX6375-03
PROPAGATION DELAY (FALLING)
vs. TEMPERATURE
200
150
100
50
0
VOD = 20mV
VOD = 10mV
VOD = 100mV
VOD = 200mV
-40 0-20 20 40 60 80
TEMPERATURE (°C)
MAXIMUM TRANSIENT DURATION
vs. THRESHOLD OVERDRIVE
500
400
300
MAX6375-02
MAX6375-04
60
40
PROPAGATION DELAY (µs)
20
0
-40 0 20-20 40 60 80
VOD = 100mV
VOD = 200mV
TEMPERATURE (°C)
PIN
MAX6375/MAX6377/
MAX6378/MAX6380
MAX6376/MAX6379
NAME FUNCTION
SC70-3 SOT23-3 SC70-3 SOT23-3
1 2 1 2 GND Ground
Active-Low Output. OUT remains low while V
21——OUT
OUT is open-drain on the MAX6377/MAX6380 and push-pull on the
MAX6375/MAX6378.
—— 2 1 OUT
Active-High Output. OUT remains high while V
threshold.
3333VCCSupply Voltage
200
100
MAXIMUM TRANSIENT DURATION (µs)
0
1 100 1000
OUT/OUT IS ASSERTED
ABOVE LINE
10
THRESHOLD OVERDRIVE
V
- V
(mV)
TH
CC
is below the threshold.
CC
is below the
CC
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