MAX6327XR24+T [MAXIM]
Power Supply Support Circuit, Fixed, 1 Channel, +2.4VV, PDSO3, LEAD FREE, SC-70, 3 PIN;
| 型号： | MAX6327XR24+T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Power Supply Support Circuit, Fixed, 1 Channel, +2.4VV, PDSO3, LEAD FREE, SC-70, 3 PIN 光电二极管 |
| 文件： | 总7页 (文件大小：558K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MAX6326/MAX6327/
MAX6328/MAX6346/
MAX6347/MAX6348
3-Pin, Ultra-Low-Power SC70/SOT
μP Reset Circuits
General Description
Features
● Ultra-Low 1µA (max) Supply Current
The MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/
MAX6348 microprocessor (µP) supervisory circuits moni-
tor the power supplies in µP and digital systems. These
devices provide excellent circuit reliability and low cost by
eliminating external components and adjustments when
used with 2.5V, 3V, 3.3V, and 5V powered circuits.
(MAX6326/MAX6327/MAX6328)
● Precision Monitoring of 2.5V, 3V, 3.3V, and 5V
Power-Supply Voltages
● Reset Thresholds Available from 2.2V to 4.63V
● Fully Specified Over Temperature
● 100ms (min) Power-On Reset Pulse Width
● Low Cost
These circuits perform a single function: they assert a
reset signal whenever the V
below a preset threshold, keeping it asserted for at least
supply voltage declines
CC
● Available in Three Versions: Push-Pull RESET,
Push-Pull RESET, and Open-Drain RESET
● Power-Supply Transient Immunity
100ms after V has risen above the reset threshold.
CC
The only difference between the devices is their out-
put. The MAX6326/MAX6346 (push-pull) and MAX6328/
MAX6348 (open-drain) have an active-low reset output.
The MAX6327/MAX6347 have an active-high push-pull
reset output. All of these parts are guaranteed to be in the
● No External Components
● 3-Pin SC70/SOT23 Packages
● Pin Compatible with MAX803/MAX809/MAX810
correct state for V
down to 1V. The reset comparator is
CC
designed to ignore fast transients on V . Reset thresh-
Ordering Information
CC
olds are factory-trimmable between 2.2V and 4.63V, in
approximately 100mV increments. Twenty-one standard
versions are available. Contact the factory for availability
of nonstandard versions.
PART†
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
3 SC70-3
MAX6326XR_ _-T
MAX6326UR_ _-T
MAX6327XR_ _-T
MAX6327UR_ _-T
MAX6328XR_ _-T
MAX6328UR_ _-T
MAX6346XR_ _-T
MAX6346UR_ _-T
MAX6347XR_ _-T
MAX6347UR_ _-T
MAX6348XR_ _-T
MAX6348UR_ _-T
3 SOT23-3
3 SC70-3
Ultra-low supply currents (1µA max for the MAX6326/
MAX6327/MAX6328) make these parts ideal for use in
portable equipment. All six devices are available in space-
saving SOT23 and SC70 packages.
3 SOT23-3
3 SC70-3
3 SOT23-3
3 SC70-3
Applications
● Computers
Power Monitoring
● Portable/Battery-Powered
Equipment
3 SOT23-3
3 SC70-3
● Intelligent Instruments
● Controllers
3 SOT23-3
3 SC70-3
● Critical µP and µC
Pin Configuration
3 SOT23-3
TOP VIEW
†The MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/
MAX6348 are available in factory-set V reset thresholds
CC
GND
1
from 2.2V to 4.63V, in approximately 0.1V increments. Choose
the desired reset-threshold suffix from Table 1 and insert it in
the blank spaces following “R”. There are 21 standard ver-
sions with a required order increment of 2500 pieces. Sample
stock is generally held on the standard versions only (see the
Selector Guide). Required order increment is 10,000 pieces for
nonstandard versions (Table 2). Contact factory for availability.
All devices available in tape-and-reel only.
MAX6326
MAX6327
MAX6328
MAX6346
MAX6347
MAX6348
3
V
CC
(RESET) RESET
2
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
SOT23-3/SC70-3
( ) ARE FOR THE MAX6327/MAX6347.
Selector Guide appears at end of data sheet.
19-1294; Rev 5; 4/14
MAX6326/MAX6327/
MAX6328/MAX6346/
MAX6347/MAX6348
3-Pin, Ultra-Low-Power SC70/SOT
μP Reset Circuits
Absolute Maximum Ratings
Terminal Voltage (with respect to GND)
Continuous Power Dissipation (T = +70°C)
A
V
.........................................................................-0.3V to +6V
3-Pin SC70 (derate 2.7mW/°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
Lead Temperature (soldering, 10s) .................................+300°C
CC
RESET, RESET (push-pull)......................-0.3V to (V
+ 0.3V)
CC
RESET (open drain)................................................-0.3V to +6V
Input Current (V ) ...........................................................20mA
Output Current (RESET, RESET) ......................................20mA
Rate of Rise (V ) ........................................................100V/µs
CC
CC
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
(V
= full range, T = -40°C to +85°C, unless otherwise noted. Typical values are at T = +25°C and V
= 3V.) (Note 1)
CC
A
A
CC
PARAMETER
SYMBOL
CONDITIONS
= 0°C to +70°C
MIN
1.0
TYP
MAX
5.5
UNITS
T
T
A
V
Range
V
CC
= -40°C to +85°C
1.2
5.5
A
MAX632_ only, V
= 3.0V for V ≤ 2.93V,
TH
CC
0.5
1.0
1.0
V
= 3.2V for V > 2.93V, no load
Supply Current
I
CC
TH
µA
V
CC
V
= 5.5V, no load
1.75
CC
V
V
-
V
1.5%
+
TH
TH
T
= +25°C
V
A
TH
1.5%
Reset Threshold
V
Table 1
TH
-
V +
TH
TH
T = -40°C to +85°C
A
V
TH
2.5%
2.5%
Reset Threshold Tempco
∆V /°C
40
ppm/°C
µs
TH
V
to Reset Delay
V
= V to (V - 100mV)
20
CC
CC
TH
TH
Reset Active Timeout Period
100
185
280
0.3
ms
RESET Output Voltage
(MAX6326/MAX6328/
MAX6346/MAX6348)
I
I
= 1.6mA, V
= 100µA, V
> 2.1V, reset asserted
SINK
SINK
CC
V
V
V
OL
≥ 1.2V, reset asserted
0.4
CC
I
I
I
I
I
= 500µA, V
= 800µA, V
= 800µA, V
= 500µA, V
= 3.2V, MAX6326 only
0.8 · V
0.8 · V
SOURCE
SOURCE
SOURCE
SOURCE
SOURCE
CC
CC
CC
CC
CC
CC
CC
CC
CC
RESET Output Voltage
(MAX6326/MAX6346)
V
V
= 4.5V, V ≤ 4.38V
TH
OH
= V
V
≥ 4.5V 0.8 · V
TH(MAX), TH
≥ 2.1V, reset asserted
≥ 1.2V, reset asserted
0.8 · V
0.8 · V
OH
= 50µA, V
CC
I
= 1.2mA, V
≥ 3.2V, reset not asserted,
SINK
CC
0.3
RESET Output Voltage
(MAX6327/MAX6347)
MAX6327 only
V
V
I
V
= 3.2mA, V
≥ 4.5V, reset not asserted,
OL
SINK
TH
CC
0.4
0.4
≤ 4.38V
I
= 3.2mA, V
= V
, V ≥ 4.5V
SINK
CC
TH(MAX) TH
MAX6326/MAX6327/MAX6328
MAX6346/MAX6347/MAX6348
6.3
9.5
RESET Threshold
Hysteresis
mV
µA
Open-Drain RESET
Output Leakage Current
0.1
Note 1: Overtemperature limits are guaranteed by design and not production tested.
Maxim Integrated
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MAX6326/MAX6327/
MAX6328/MAX6346/
MAX6347/MAX6348
3-Pin, Ultra-Low-Power SC70/SOT
μP Reset Circuits
Typical Operating Characteristics
(T = +25°C, unless otherwise noted.)
A
POWER-DOWN RESET DELAY
vs. TEMPERATURE
SUPPLY CURRENT vs. TEMPERATURE
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
200
150
V
CC
= 5V
V
CC
= 3.3V
100
V
OD
= 20mV
V
OD
= 10mV
50
0
V
OD
= 100mV
V
CC
= 1.2V
20
V
= 200mV
40
OD
-40 -20
0
40
60
80
-40
-20
0
20
60
80
TEMPERATURE (°C)
TEMPERATURE (°C)
POWER-UP RESET TIMEOUT
vs. TEMPERATURE
MAXIMUM TRANSIENT DURATION
vs. RESET THRESHOLD OVERDRIVE (SC70)
210
500
400
300
200
100
0
200
190
180
170
160
150
140
130
-40 -20
0
20
40
60
80
1
10
RESET THRESHOLD OVERDRIVE,
- V (mV)
100
1000
TEMPERATURE (°C)
V
TH
CC
Pin Description
PIN
NAME
FUNCTION
MAX6326/MAX6346
MAX6328/MAX6348
MAX6327
MAX6347
1
1
GND
Ground
Active-Low Reset Output. RESET remains low while V
is below the reset
rises above the reset threshold.
CC
threshold and for at least 100ms after V
CC
2
—
RESET
RESET is open-drain on the MAX6328/MAX6348 and push-pull on the
MAX6326/MAX6346.
Active-High Reset Output. RESET remains high while V
is below the reset
CC
—
3
2
3
RESET
threshold and for at least 100ms after V
rises above the reset threshold.
CC
V
Supply Voltage
CC
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MAX6326/MAX6327/
MAX6328/MAX6346/
MAX6347/MAX6348
3-Pin, Ultra-Low-Power SC70/SOT
μP Reset Circuits
Applications Information
V
CC
Interfacing to µPs with
Bidirectional Reset Pins
V
V
CC
CC
Since the RESET output on the MAX6328/MAX6348 is
open drain, these devices interface easily with micropro-
cessors (µPs) that have bidirectional reset pins, such as
the Motorola 68HC11. Connecting the µP supervisor’s
RESET output directly to the microcontroller’s (µC’s)
RESET pin with a single pull-up resistor allows either
device to assert reset (Figure 1).
µP
MAX6328
MAX6348
MOTOROLA
68HCXX
RESET
INPUT
RESET
Negative-Going V
Transients
CC
GND
GND
In addition to issuing a reset to the µP during power-up,
power-down, and brownout conditions, these devices are
relatively immune to short-duration, negative-going V
transients (glitches).
CC
Figure 1. Interfacing to μPs with Bidirectional Reset Pins
The Typical Operating Characteristics show the Maxi-
mum Transient Duration vs. Reset Threshold Overdrive
graph, for which reset pulses are not generated. The
graph shows the maximum pulse width that a negative-
going V
transient may typically have when issuing a
CC
reset signal. As the amplitude of the transient increases,
the maximum allowable pulse width decreases.
Table 1. Factory-Trimmed Reset Thresholds‡
RESET THRESHOLD VOLTAGE, V
(V)
TH
PART
SUFFIX
T
A
=
+25°C
T
A
= -40°C to +85°C
MIN
TYP
2.200
2.320
2.400
2.500
2.630
2.700
2.800
2.930
3.000
3.080
3.300
3.400
3.500
3.600
3.700
3.800
MAX
2.233
2.355
2.436
2.537
2.669
2.741
2.842
2.974
3.045
3.126
3.350
3.451
3.552
3.654
3.755
3.857
MIN
MAX
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX632_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
22
23
24
25
26
27
28
29
30
31
33
34
35
36
37
38
2.167
2.285
2.364
2.462
2.591
2.660
2.758
2.886
2.955
3.034
3.250
3.349
3.447
3.546
3.644
3.743
2.145
2.262
2.340
2.437
2.564
2.633
2.730
2.857
2.925
3.003
3.217
3.315
3.412
3.510
3.607
3.705
2.250
2.375
2.460
2.562
2.696
2.768
2.870
3.000
3.075
3.150
3.383
3.485
3.587
3.690
3.792
3.895
‡Factory-trimmed reset thresholds are available in approximately 100mV increments with a 1.5% room-temperature variance.
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MAX6326/MAX6327/
MAX6328/MAX6346/
MAX6347/MAX6348
3-Pin, Ultra-Low-Power SC70/SOT
μP Reset Circuits
Table 1. Factory-Trimmed Reset Thresholds‡ (continued)
RESET THRESHOLD VOLTAGE, V (V)
TH
PART
SUFFIX
T
= +25°C
TYP
T = -40°C to +85°C
A
A
MIN
MAX
3.958
4.060
4.161
4.263
4.364
4.446
4.567
4.699
MIN
MAX
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
MAX634_ _R
39
40
41
42
43
44
45
46
3.841
3.940
4.038
4.137
4.235
4.314
4.432
4.560
3.900
4.000
4.100
4.200
4.300
4.380
4.500
4.630
3.802
3.900
3.997
4.095
4.192
4.270
4.387
4.514
3.997
4.100
4.202
4.305
4.407
4.489
4.612
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
TOP MARK
TOP MARK
ORDER
INCREMENT(k)
ORDER
INCREMENT (k)
PART
PART
SOT23
SC70
SOT23
SC70
MAX6347_R46-T
MAX6347_R45-T
MAX6347_R44-T
MAX6347_R43-T
MAX6347_R42-T
MAX6347_R41-T
MAX6347_R40-T
MAX6347_R39-T
MAX6347_R38-T
MAX6347_R37-T
MAX6347_R36-T
MAX6347_R35-T
MAX6347_R34-T
MAX6347_R33-T
MAX6327_R31-T
MAX6327_R30-T
MAX6327_R29-T
MAX6327_R28-T
MAX6327_R27-T
MAX6327_R26-T
MAX6327_R25-T
MAX6327_R24-T
MAX6327_R23-T
MAX6327_R22-T
FZBW
FZBV
FZBU
FZBT
FZBS
FZBR
FZBQ
FZBP
FZBO
FZBN
FZBM
FZBL
FZBK
FZBJ
FMAA
FNAA
FLAA
FKAA
FJAA
FIAA
ACF
2.5
10
MAX6346_R46-T
MAX6346_R45-T
MAX6346_R44-T
MAX6346_R43-T
MAX6346_R42-T
MAX6346_R41-T
MAX6346_R40-T
MAX6346_R39-T
MAX6346_R38-T
MAX6346_R37-T
MAX6346_R36-T
MAX6346_R35-T
MAX6346_R34-T
MAX6346_R33-T
MAX6326_R31-T
MAX6326_R30-T
MAX6326_R29-T
MAX6326_R28-T
MAX6326_R27-T
MAX6326_R26-T
MAX6326_R25-T
MAX6326_R24-T
MAX6326_R23-T
MAX6326_R22-T
FZBI
FZBH
FZBG
FZBF
FZBE
FZBD
FZBC
FZBB
FZBA
FZAZ
FZAY
FZAX
FZAW
FZAV
FDAA
FEAA
FCAA
FBAA
FAAA
EZAA
EYAA
EXAA
EWAA
EHAA
ACO
2.5
10
2.5
10
10
10
10
10
10
10
10
10
10
10
2.5
10
2.5
10
10
2.5
10
10
2.5
2.5
–
–
ACK
ACL
2.5
10
–
–
–
–
10
10
10
–
–
–
–
–
–
10
–
–
10
10
–
–
–
10
–
–
–
10
10
–
–
–
–
10
2.5
10
2.5
10
10
ACT
–
ACE
–
ACP
–
ACS
–
–
–
ACR
–
2.5
10
10
2.5
2.5
ACI
–
FHAA
FGAA
FFAA
EIAA
–
–
ACQ
AAI
ACH
AAH
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MAX6326/MAX6327/
MAX6328/MAX6346/
MAX6347/MAX6348
3-Pin, Ultra-Low-Power SC70/SOT
μP Reset Circuits
Table 2. Device Marking Codes and Minimum Order Increments (continued)
TOP MARK
TOP MARK
ORDER
INCREMENT (k)
ORDER
INCREMENT (k)
PART
PART
SOT23
SC70
SOT23
SC70
–
MAX6348_R46-T
MAX6348_R46-T
MAX6348_R45-T
MAX6348_R44-T
MAX6348_R43-T
MAX6348_R42-T
MAX6348_R41-T
MAX6348_R40-T
MAX6348_R39-T
MAX6348_R38-T
MAX6348_R37-T
MAX6348_R36-T
MAX6348_R35-T
SOT23
FZCK
FZCJ
FZCI
SC70
MAX6348_R34-T
MAX6348_R33-T
MAX6328_R31-T
MAX6328_R30-T
MAX6328_R29-T
MAX6328_R28-T
MAX6328_R27-T
MAX6328_R26-T
MAX6328_R25-T
MAX6328_R24-T
MAX6328_R23-T
MAX6328_R22-T
FZBY
FZBX
FVAA
FWAA
FUAA
FTAA
FSAA
FRAA
FQAA
FPAA
FOAA
EJAA
10
10
ACN
2.5
10
2.5
10
10
10
10
10
10
10
10
10
–
–
ACW
–
2.5
10
ACM
FZCH
FZCG
FZCF
FZCE
FZCD
FZCC
FZCB
FZCA
FZBZ
–
–
–
–
–
–
–
–
–
ACV
–
2.5
10
–
10
ACJ
–
2.5
10
–
10
ACU
AAJ
2.5
2.5
Chip Information
TRANSISTOR COUNT: 419
Selector Guide (standard versions*)
PART
NOMINAL
V
TH
(V)
MAX634_ _R46-T
MAX634_ _R44-T
MAX632_ _R31-T
MAX632_ _R29-T
MAX632_ _R26-T
MAX632_ _R23-T
MAX632_ _R22-T
4.63
4.38
3.08
2.93
2.63
2.32
2.20
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages. Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE PACKAGE OUTLINE
LAND
PATTERN NO.
*Sample stock is generally held on all standard versions.
TYPE
3 SC70
3 SOT23
CODE
NO.
X3-2
21-0075
21-0051
90-0208
90-0179
U3-1
Maxim Integrated
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MAX6326/MAX6327/
MAX6328/MAX6346/
MAX6347/MAX6348
3-Pin, Ultra-Low-Power SC70/SOT
μP Reset Circuits
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
1
12/05
4/14
Initial release
—
1
No /V OPNs; removed Automotive reference from Applications section
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
©
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
2014 Maxim Integrated Products, Inc.
│ 7
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