Maxim MAX6378UR40-T 3-pin, ultra-low-power sc70/sot23 voltage detector Datasheet

19-1721; Rev 2; 2/03
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
Applications
Precision Battery Monitoring
Load Switching/Power Sequencing
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
Ordering Information
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
*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 continued at end of data sheet
Power-Supply Monitoring in Digital/Analog Systems
Pin Configuration
Portable/Battery-Powered Equipment
TOP VIEW
GND
OUT(OUT) 1
1
MAX6375XR–
MAX6380XR
Selector Guide appears at end of data sheet.
MAX6375UR–
MAX6380UR
3 VCC
OUT(OUT) 2
3 VCC
GND 2
SC70-3
SOT23-3
( ) ARE FOR MAX6376/MAX6379 ONLY.
________________________________________________________________ Maxim Integrated Products
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.
1
MAX6375–MAX6380
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 VCC supply 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 VCC is below VTH). The
MAX6376/MAX6379 have an active-high push-pull output (OUT is logic high when VCC is below VTH). All
parts are guaranteed to be in the correct output logic
state for VCC down 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.
MAX6375–MAX6380
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
ABSOLUTE MAXIMUM RATINGS
Terminal Voltage (with respect to GND)
VCC ...........................................................................-0.3V to +6V
OUT, OUT (push-pull) ................................-0.3V to (VCC + 0.3V)
OUT (open-drain) .....................................................-0.3V to +6V
Input Current (VCC) .............................................................20mA
Output Current (OUT, OUT) ................................................20mA
Continuous Power Dissipation (TA = +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
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.
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)
PARAMETER
SYMBOL
VCC Operating Range
Supply Current
Voltage Threshold
Voltage Threshold Tempco
ICC
VTH
OUT Output Voltage
(MAX6375/MAX6377)
VOL
VOH
VOH
OUT Output Voltage
(MAX6376/MAX6379)
VOL
Voltage Threshold
Hysteresis
MIN
TYP
1.0
5.5
TA = -40°C to +85°C
1.2
5.5
MAX6375/76/77 only, VCC = 3.0V for VTH ≤ 2.93V,
VCC = 3.2V for VTH > 2.93V, no load
0.5
1.0
VCC = 5.5V, no load
1.0
1.75
TA = +25°C
VTH - 1.5% VTH VTH + 1.5%
TA = -40°C to +85°C
VTH - 2.5% VTH VTH + 2.5%
Table 1
UNITS
V
µA
V
40
VCC = (VTH + 100mV) to (VTH - 100mV)
20
VCC = (VTH - 100mV) to (VTH + 100mV)
42
ppm/°C
µs
ISINK = 1.6mA, VCC > 2.1V, OUT asserted
0.3
ISINK = 100µA, VCC ≥ 1.2V, OUT asserted
0.4
V
ISOURCE = 500µA, VCC = 3.2V, MAX6375 only
0.8 ✕ VCC
ISOURCE = 800µA, VCC = 4.5V, VTH ≤ 4.38V
0.8 ✕ VCC
ISOURCE = 800µA, VCC = VTH(MAX), VTH ≥ 4.5V
0.8 ✕ VCC
ISOURCE = 500µA, VCC ≥ 2.1V, OUT asserted
0.8 ✕ VCC
ISOURCE = 50µA, VCC ≥ 1.2V, OUT asserted
0.8 ✕ VCC
V
ISINK = 1.2mA, VCC ≥ 3.2V, OUT not asserted,
MAX6376 only
0.3
ISINK = 3.2mA, VCC ≥ 4.5V, OUT not asserted,
VTH ≤ 4.38V
0.4
ISINK = 3.2mA, VCC = VTH(MAX), VTH ≥ 4.5V
0.4
MAX6375/MAX6376/MAX6377
6.3
MAX6378/MAX6379/MAX6380
9.5
Open-Drain OUT Output
Leakage Current
Note 1: Production tested at +25°C only. Overtemperature limits are guaranteed by design, not production tested.
2
MAX
TA = 0°C to +70°C
∆VTH/°C
Propagation Delay
OUT Output Voltage
(MAX6375/MAX6377/
MAX6378/MAX6380)
CONDITIONS
_______________________________________________________________________________________
V
mV
0.1
µA
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
PROPAGATION DELAY (FALLING)
vs. TEMPERATURE
MAX6375-01
1.0
0.9
200
PROPAGATION DELAY (µs)
VCC = 5V
0.6
VCC = 3.3V
0.5
0.4
0.3
0.2
0.1
100
VOD = 20mV
VOD = 10mV
50
VOD = 100mV
VCC = 1.2V
VOD = 200mV
0
0
-20
0
20
40
60
-40
80
-20
0
20
40
60
80
TEMPERATURE (°C)
TEMPERATURE (°C)
PROPAGATION DELAY (RISING)
vs. TEMPERATURE
MAXIMUM TRANSIENT DURATION
vs. THRESHOLD OVERDRIVE
VOD = 10mV
120
100
500
MAX6375-03
140
MAXIMUM TRANSIENT DURATION (µs)
-40
PROPAGATION DELAY (µs)
150
VOD = 20mV
80
60
VOD = 100mV
40
VOD = 200mV
20
0
MAX6375-04
SUPPLY CURRENT (µA)
0.8
0.7
MAX6375-02
SUPPLY CURRENT vs. TEMPERATURE
400
300
200
OUT/OUT IS ASSERTED
ABOVE LINE
100
0
-40
-20
0
20
40
60
80
1
TEMPERATURE (°C)
10
100
1000
THRESHOLD OVERDRIVE
VTH - VCC (mV)
Pin Description
PIN
MAX6375/MAX6377/
MAX6378/MAX6380
MAX6376/MAX6379
SC70-3
SOT23-3
SC70-3
SOT23-3
1
2
1
2
NAME
FUNCTION
GND
Ground
2
1
—
—
OUT
Active-Low Output. OUT remains low while VCC is below the threshold.
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 VCC is below the
threshold.
3
3
3
3
VCC
Supply Voltage
______________________________________________________________________________________
3
MAX6375–MAX6380
__________________________________________Typical Operating Characteristics
(VCC = 5V, TA = +25°C, unless otherwise noted.)
MAX6375–MAX6380
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
Negative-Going VCC Transients
____________ Applications Information
These devices are relatively immune to short-duration,
negative-going VCC transients (glitches). The Typical
Operating Characteristics show the Maximum Transient
Duration vs. Threshold Overdrive graph, for which output pulses are not generated. The graph shows the
maximum pulse width that a negative-going VCC transient may typically have before the devices issue output signals. As the amplitude of the transient increases,
the maximum-allowable pulse width decreases.
Interfacing to Different
Logic Voltage Components
The MAX6377/MAX6380 have an active-low, opendrain output. This output structure sinks current when
OUT is asserted. Connect a pullup resistor from OUT to
any supply voltage up to 5.50V (Figure 1). Select a
resistor value large enough to allow a valid logic low
(see Electrical Characteristics), and small enough to
register a logic high while supplying all input current
and leakage paths connected to the OUT line.
VIN
DC/DC
CONVERTER
REGULATED
3.0V
VOUT
VCC
3.6V
Li+
µP
VCC
MAX6377
OUT
SUSPEND
(OPEN-DRAIN)
Figure 1. Interfacing to Different Logic Voltage Components
Table 1. Factory-Trimmed Reset Thresholds‡
RESET THRESHOLD VOLTAGE, VTH (V)
PART
MAX6375_R
MAX6376_R
MAX6377_R
SUFFIX
TA = +25°C
TA = -40°C TO +85°C
MIN
TYP
MAX
MIN
MAX
22
2.167
2.200
2.233
2.145
2.250
23
2.285
2.320
2.355
2.262
2.375
24
2.364
2.400
2.436
2.340
2.460
25
2.462
2.500
2.537
2.437
2.562
26
2.591
2.630
2.669
2.564
2.696
27
2.660
2.700
2.741
2.633
2.768
28
2.758
2.800
2.842
2.730
2.870
29
2.886
2.930
2.974
2.857
3.000
30
2.955
3.000
3.045
2.925
3.075
31
3.034
3.080
3.126
3.003
3.150
‡Factory-trimmed reset thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance.
4
_______________________________________________________________________________________
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
MAX6375–MAX6380
Table 1. Factory-Trimmed Reset Thresholds‡ (continued)
RESET THRESHOLD VOLTAGE, VTH (V)
PART
SUFFIX
MAX6378_R
MAX6379_R
MAX6380_R
TA = +25°C
TA = -40°C TO +85°C
MIN
TYP
MAX
MIN
MAX
33
3.250
3.300
3.350
3.217
3.383
34
3.349
3.400
3.451
3.315
3.485
35
3.447
3.500
3.552
3.412
3.587
36
3.546
3.600
3.654
3.510
3.690
37
3.644
3.700
3.755
3.607
3.792
38
3.743
3.800
3.857
3.705
3.895
39
3.841
3.900
3.958
3.802
3.997
40
3.940
4.000
4.060
3.900
4.100
41
4.038
4.100
4.161
3.997
4.202
42
4.137
4.200
4.263
4.095
4.305
43
4.235
4.300
4.364
4.192
4.407
44
4.314
4.380
4.446
4.270
4.489
45
4.432
4.500
4.567
4.387
4.612
46
4.560
4.630
4.699
4.514
4.746
‡Factory-trimmed reset thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance.
Table 2. Device Marking Codes and Minimum Order Increments
PART
TOP MARK TOP MARK
ORDER
(SC70)
(SOT23) INCREMENT (k)
PART
TOP MARK TOP MARK
ORDER
(SC70)
(SOT23) INCREMENT (k)
MAX6375_R22-T
ADH
FZHD
2.5
MAX6376_R30-T
—
—
10
MAX6375_R23-T
ADI
FZHE
2.5
MAX6376_R31-T
MAX6375_R24-T
—
—
10
MAX6377_R22-T
ADO
FZHL
2.5
ADP
FZHM
MAX6375_R25-T
—
—
10
2.5
MAX6377_R23-T
ADB
FZHN
2.5
MAX6375_R26-T
ACZ
FZHC
2.5
MAX6377_R24-T
—
—
10
MAX6375_R27-T
—
MAX6375_R28-T
—
—
10
MAX6377_R25-T
—
—
10
—
10
MAX6377_R26-T
ACQ
FZHO
2.5
MAX6375_R29-T
ADJ
FZHF
2.5
MAX6377_R27-T
—
—
10
MAX6375_R30-T
—
—
10
MAX6377_R28-T
—
—
10
MAX6375_R31-T
ADK
FZHG
2.5
MAX6377_R29-T
ADC
FZHP
2.5
MAX6376_R22-T
ADL
FZHH
2.5
MAX6377_R30-T
—
—
10
MAX6376_R23-T
ADM
FZHI
2.5
MAX6377_R31-T
ADR
FZHQ
2.5
MAX6376_R24-T
—
—
10
MAX6378_R33-T
—
—
10
—
—
10
MAX6376_R25-T
—
—
10
MAX6378_R34-T
MAX6376_R26-T
ADN
FZHJ
2.5
MAX6378_R35-T
—
—
10
MAX6376_R27-T
—
—
10
MAX6378_R36-T
—
—
10
—
—
10
—
—
10
MAX6376_R28-T
—
—
10
MAX6378_R37-T
MAX6376_R29-T
ADA
FZHK
2.5
MAX6378_R38-T
_______________________________________________________________________________________
5
MAX6375–MAX6380
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
Table 2. Device Marking Codes and Minimum Order Increments (continued)
TOP MARK TOP MARK
ORDER
(SC70)
(SOT23) INCREMENT (k)
PART
PART
TOP MARK TOP MARK
ORDER
(SC70)
(SOT23) INCREMENT (k)
MAX6378_R39-T
—
—
10
MAX6379_R43-T
—
—
10
MAX6378_R40-T
—
—
10
MAX6379_R44-T
ADE
FZHW
2.5
MAX6378_R41-T
—
—
10
MAX6379_R45-T
—
—
10
MAX6378_R42-T
—
—
10
MAX6379_R46-T
ADT
FZHX
2.5
MAX6378_R43-T
—
—
10
MAX6380_R33-T
—
—
10
MAX6378_R44-T
ADS
FZHU
2.5
MAX6380_R34-T
—
—
10
MAX6378_R45-T
—
—
10
MAX6380_R35-T
—
—
10
MAX6378_R46-T
ADD
FZHV
2.5
MAX6380_R36-T
—
—
10
MAX6379_R33-T
—
—
10
MAX6380_R37-T
—
—
10
MAX6379_R34-T
—
—
10
MAX6380_R38-T
—
—
10
MAX6379_R35-T
—
—
10
MAX6380_R39-T
—
—
10
MAX6379_R36-T
—
—
10
MAX6380_R40-T
—
—
10
MAX6379_R37-T
—
—
10
MAX6380_R41-T
—
—
10
MAX6379_R38-T
—
—
10
MAX6380_R42-T
—
—
10
MAX6379_R39-T
—
—
10
MAX6380_R43-T
—
—
10
MAX6379_R40-T
—
—
10
MAX6380_R44-T
ADU
FZHY
2.5
MAX6379_R41-T
—
—
10
MAX6380_R45-T
—
—
10
MAX6379_R42-T
—
—
10
MAX6380_R46-T
ADF
FZHZ
2.5
___________________Chip Information
Selector Guide
(Standard Versions**)
PART
NOMINAL VTH (V)
MAX63 _ _ _ R46-T
4.63
MAX63 _ _ _ R44-T
4.38
MAX63 _ _ _ R31-T
3.08
MAX63 _ _ _ R29-T
2.93
MAX63 _ _ _ R26-T
2.63
MAX63 _ _ _ R23-T
2.32
MAX63 _ _ _ R22-T
2.20
**Sample stock is generally held on all standard versions.
Contact factory for availability of nonstandard versions.
6
TRANSISTOR COUNT: 419
Ordering Information (continued)
PART*
TEMP RANGE
PIN-PACKAGE
MAX6377UR _ _ -T
-40°C to +85°C
3 SOT23-3
MAX6377XR _ _ -T
-40°C to +85°C
3 SC70-3
MAX6378UR _ _ -T
-40°C to +85°C
3 SOT23-3
MAX6378XR _ _ -T
-40°C to +85°C
3 SC70-3
MAX6379UR _ _ -T
-40°C to +85°C
3 SOT23-3
MAX6379XR _ _ -T
-40°C to +85°C
3 SC70-3
MAX6380UR _ _ -T
-40°C to +85°C
3 SOT23-3
MAX6380XR _ _ -T
-40°C to +85°C
3 SC70-3
*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.
_______________________________________________________________________________________
3-Pin, Ultra-Low-Power SC70/SOT23
Voltage Detectors
SOT23 L.EPS
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600_____________________ 7
© 2003 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
MAX6375–MAX6380
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages.)
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