MAX1807EUB+T [MAXIM]
Power Supply Support Circuit, Fixed, 5 Channel, BICMOS, PDSO10, MICRO MAX PACKAGE-10;型号: | MAX1807EUB+T |
厂家: | MAXIM INTEGRATED PRODUCTS |
描述: | Power Supply Support Circuit, Fixed, 5 Channel, BICMOS, PDSO10, MICRO MAX PACKAGE-10 控制器 |
文件: | 总10页 (文件大小:230K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
19-1791; Rev 0; 10/00
Micropower Adjustable Overvoltage
Protection Controllers
General Description
Features
The MAX1807/MAX1808 monitor up to five supply rails
for an overvoltage condition and provide a latched out-
put when any one of the five supplies exceeds the trip
thresholds. The latched output drives an external P-
channel load switch to remove power when an over-
voltage condition is detected. The latch is reset when a
logic low is input to ON or the power supply is cycled.
o Five 3% Accurate Overvoltage Comparators
o Series PFET Gate Driver with VGS Limiter
o 21µA Quiescent Supply Current
o 4µA Shutdown Current
o 4.4V to 28V Operating Voltage Range
The MAX1807 provides a 28V open-drain fault output
that can be used to trigger an alert, trip a resetable
fuse, or for other purposes. The MAX1808 includes a
low-battery comparator with hysteresis to drive the DP
output high, turning off the external P-channel switch
when the input voltage is too low.
o 3% Accurate Comparator with 10% Hysteresis for
Low-Battery Detection (MAX1808)
o 28V Open-Drain N-Channel Output (MAX1807)
o Small 10-Pin µMAX Package
The MAX1807/MAX1808 are available in a miniature 10-
pin µMAX package.
Ordering Information
________________________Applications
Notebook Computers
PART
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
10 µMAX
Power-Supply Modules
MAX1807EUB
MAX1808EUB
Multi-Output Power Supplies
10 µMAX
Pin Configuration and Typical Operating Circuit appear at
end of data sheet.
Functional Diagram
V
DD
2.5V
ON
INTERNAL
POWER-ON
1V REF
REF OK
SUPPLY
PMOS
POWER
DRIVER
RESET
DP
(60µs)
+
TH
(MAX1808)
_
+
IN1
IN2
_
R
S
Q
+
_
FAULT
(MAX1807)
IN3
IN4
IN5
+
_
+
_
GND
MAX1807
MAX1808
+
_
________________________________________________________________ Maxim Integrated Products
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Micropower Adjustable Overvoltage
Protection Controllers
ABSOLUTE MAXIMUM RATINGS
IN1_, TH to GND.......................................................-0.3V to +6V
Operating Temperature Range ...........................-40°C to +85°C
ON, V , FAULT to GND........................................-0.3V to +30V
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
DD
DP to GND..................................................-0.3V to (V
+ 0.3V)
DD
Continuous Power Dissipation
10-Pin µMAX (derate 5.6mW/°C above +70°C)...........448mW
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
= V
= 15V, V –V
= 0.5V, V = 2.0V, C = 5nF, FAULT = open, T = 0°C to +85°C, unless otherwise noted.)
DD
ON
IN1 IN5 TH DP A
PARAMETER
GENERAL
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
V
V
Input Voltage Range
DP and FAULT in correct state (Table 1)
2
28
28
V
V
DD
DD
Operating Voltage Range
4.4
Undervoltage Lockout
Rising trip level, typical 2% hysteresis; when V
is below this level, DP = Hi and FAU LT = Hi-Z
DD
DD
2
2.7
4.0
V
Threshold
Supply Current
V
V
= 2V or 0.5V
21
4
45
µA
µA
TH
Shutdown Current
= 15V, V = GND, V –V = V = GND
8.5
DD
ON
IN1 IN5
TH
COMPARATORS (IN1–IN5, TH)
Rising edge, typical 1% hysteresis,
IN1–IN5 Input Trip Level
0.97
1
1.03
V
V
V
V
= 4.4V to 28V
DD
DD
DD
TH Input Trip Level, Falling
TH Input Trip Level, Rising
IN1–IN5 Propagation Delay
= 4.4V to 28V (MAX1808 only)
= 4.4V to 28V (MAX1808 only)
0.97
1
1.03
V
V
1.045
1.1
40
1.155
IN1–IN5 rising, 10mV overdrive, V
= 4.4V
µs
DD
TH rising, 10mV overdrive, V = 4.4V
DD
(MAX1808 only)
11
40
TH Propagation Delay
µs
TH falling, 10mV overdrive, V
(MAX1808 only)
= 4.4V
DD
IN1–IN5 Input Leakage Current
TH Input Leakage Current
ON Input High Logic Level
ON Input Low Logic Level
V
V
V
V
V
V
= 1.5V
0.5
0.5
50
50
nA
nA
V
IN
= 1.5V (MAX1808 only)
TH
DD
DD
ON
ON
= 4.4V to 28V
= 4.4V to 28V
= 5V
1.6
0.5
1.2
10
V
0.03
0.01
ON Input Leakage Current
µA
= 28V
FAULT Output High Leakage
Current
V
= 28V (MAX1807 only)
2
µA
FAULT
FAULT Output Low Voltage
I
= 4mA (MAX1807 only)
0.4
V
SINK
2
_______________________________________________________________________________________
Micropower Adjustable Overvoltage
Protection Controllers
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
= 15V, V –V
= 0.5V, V = 2.0V, C = 5nF, FAULT = open, T = 0°C to +85°C, unless otherwise noted.)
DD
ON
IN1 IN5 TH DP A
PARAMETER
SYMBOL
CONDITIONS
MIN
1
TYP
50
MAX
UNITS
µA
V
V
= V
- 0.4V
- 2V
DP
DP
DD
DD
DP Source Current
(PMOS Turn-Off)
V
V
= V
= 1.5V
,
DD
ON
IN1
= V
5
20
mA
DP Sink Current (PMOS Turn-On)
V
= V
- 5V
4
50
mA
DP
DD
V
= V
- 2V, V
= GND,
DP
DD
ON
DP Pullup Current (PMOS Off)
25
µA
in shutdown state
V
V
= 8.5V to 28V
= 4.4V
7.5
3.4
9.5
4.1
11.5
4.4
DD
DD
DP Turn-On Clamp Voltage
V
= V
,
DD
ON
V
(V
DD
- V
DP
)
I
= 10µA
DPSINK
ELECTRICAL CHARACTERISTICS
(V
= V
= 15V, V –V
= 0.5V, V = 2.0V, C = 5nF, FAULT = open, T = -40°C to +85°C, unless otherwise noted.) (Note 1)
DD
ON
IN1 IN5 TH DP A
PARAMETER
GENERAL
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
V
Input Voltage Range
DP and FAULT in correct state (Table 1)
2
28
28
V
V
DD
DD
Operating Voltage Range
4.4
Rising trip level, typical 2% hysteresis; when
V
Undervoltage Lockout
DD
V
DD
is below this level, DP = Hi and FAU LT =
2
4.0
V
Threshold
Hi-Z
Supply Current
V
= 2V or 0.5V
45
µA
µA
TH
DD
Shutdown Current
V
= 15V, V = GND, V –V = V = GND
8.5
ON
IN1 IN5
TH
COMPARATORS (IN1–IN5, TH)
IN1–IN5 Input Trip Level
TH Input Trip Level, Falling
TH Input Trip Level, Rising
IN1–IN5 Input Leakage Current
TH Input Leakage Current
ON Input High Logic Level
ON Input Low Logic Level
Rising edge, typical 1% hysteresis
0.95
0.95
1.05
1.05
1.155
50
V
V
V
V
V
V
V
V
V
V
= 4.4V to 28V (MAX1808 only)
= 4.4V to 28V (MAX1808 only)
DD
DD
1.045
V
= 1.5V
nA
nA
V
IN
= 1.5V (MAX1808 only)
50
TH
DD
DD
ON
ON
= 4.4V to 28V
= 4.4V to 28V
= 5V
1.8
0.4
1.2
10
V
ON Input Leakage Current
µA
µA
= 28V
FAULT Output High Leakage
Current
V
= 28V (MAX1807 only)
2
FAULT
FAULT Output Low Voltage
I
= 4mA (MAX1807 only)
0.4
V
SINK
V
V
= V
= V
- 0.4V
- 2V
1
4
µA
mA
mA
DP
DP
DD
DD
DP Source Current
(PMOS Turn-Off)
V
V
= V
= 1.5V
,
DD
ON
IN1
DP Sink Current (PMOS Turn-On)
DP Turn-On Clamp Voltage
V
V
= V - 5V
2
DP
DD
V
V
= 8.5V to 28V
= 4.4V
7.5
3.4
11.5
4.4
DD
DD
= V
,
DD
ON
V
(V
DD
- V
DP
)
I
= 10µA
DPSINK
Note 1: Specifications to -40°C are guaranteed by design, not production tested.
_______________________________________________________________________________________
3
Micropower Adjustable Overvoltage
Protection Controllers
Typical Operating Characteristics
(Typical Operating Circuit, V
= 15V, T = +25°C, unless otherwise noted.)
A
DD
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
FAULT OUTPUT VOLTAGE LOW
vs. FAULT OUTPUT SINK CURRENT
SUPPLY CURRENT vs. SUPPLY VOLTAGE
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
700
600
500
400
300
200
100
0
25
20
15
10
5
T = +85°C
A
T
= +85°C
A
T
= +85°C
A
T
= +25°C
A
T
= +25°C
T
= +25°C
A
A
T
= -40°C
A
T
= -40°C
A
T
= -40°C
A
0
0
5
10
15
20
25
30
0
5
10
15
20
25
30
0
4
8
12
16
20
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
FAULT OUTPUT SINK CURRENT (mA)
NORMALIZED TH TRIP THRESHOLD
ERROR vs. SUPPLY VOLTAGE (TH FALLING)
NORMALIZED IN_ TRIP THRESHOLD
ERROR vs. SUPPLY VOLTAGE
NORMALIZED IN_ TRIP THRESHOLD
ERROR vs. TEMPERATURE
0.25
0.20
0.15
0.10
0.05
0
0.3
0.2
0.02
0.01
0
0.1
28V
0
T
= +25°C
T
= +25°C
T
= +85°C
A
A
A
15V
-0.1
-0.2
-0.3
-0.4
-0.05
-0.10
-0.15
-0.20
-0.25
4.4V
T
= -40°C
A
-0.01
-0.02
T
= -40°C
A
T
= +85°C
A
0
10
20
30
0
5
10
15
20
25
30
-50
0
50
100
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
NORMALIZED TH TRIP THRESHOLD
ERROR vs. TEMPERATURE (TH FALLING)
NORMALIZED TH TRIP THRESHOLD
ERROR vs. SUPPLY VOLTAGE (TH RISING)
NORMALIZED TH TRIP THRESHOLD
ERROR vs. TEMPERATURE (TH RISING)
0.15
0.10
0.05
0
0.20
0.15
0.10
0.05
0
0.3
0.2
0.1
0
28V
4.4V
28V
T
= +25°C
= -40°C
A
T
A
-0.05
-0.10
-0.15
-0.20
-0.05
-0.10
-0.15
-0.1
-0.2
-0.3
T
= +85°C
A
4.4V
-50
0
50
100
0
5
10
15
20
25
30
-50
0
50
100
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
4
_______________________________________________________________________________________
Micropower Adjustable Overvoltage
Protection Controllers
Typical Operating Characteristics (continued)
= 15V, T = +25°C, unless otherwise noted.)
A
(Typical Operating Circuit, V
DD
TH PROPAGATION DELAY
vs. SUPPLY VOLTAGE (TH RISING)
IN_ PROPAGATION DELAY
vs. SUPPLY VOLTAGE
TH PROPAGATION DELAY
vs. SUPPLY VOLTAGE (TH FALLING)
16
14
12
10
8
60
50
40
30
20
10
0
60
50
40
30
20
10
0
T
= +85°C
A
T
T
= +85°C
= +25°C
A
T
= +85°C
=+25°C
= -40°C
A
T
= +25°C
= -40°C
A
T
A
A
T
A
T
A
6
T
= -40°C
A
4
10mV
OVERDRIVE
2
10mV
10mV
OVERDRIVE
OVERDRIVE
0
0
5
10
15
20
25 30
0
5
10
15
20
25
30
0
5
10
15
20
25 30
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
DP SINK CURRENT
DP SOURCE CURRENT
DP SOURCE CURRENT
vs. (V - V ) VOLTAGE
vs. (V - V ) VOLTAGE
DD
DP
vs. (V - V ) VOLTAGE
DD
DP
DD
DP
0.10
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0
60
50
40
30
20
10
0
25
20
15
10
5
0
0
2
4
6
8
10
12
0
0.15
0.30
0.45
0.60
0
2
4
6
8
10
12
(V - V ) VOLTAGE (V)
(V - V ) VOLTAGE (V)
DD
DP
(V - V ) VOLTAGE (V)
DD DP
DD
DP
IN_ AND TH BIAS CURRENT
vs. TEMPERATURE
IN_ MAXIMUM TRANSIENT PULSE
DURATION vs. PULSE OVERDRIVE VOLTAGE
100
TH MAXIMUM TRANSIENT PULSE
DURATION vs. PULSE OVERDRIVE VOLTAGE
100
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
DP LATCHES (HIGH)
ABOVE THE CURVE
DP GOES
HIGH MOMENTARILY
ABOVE THE CURVE
90
80
70
60
50
40
30
20
10
0
90
80
70
60
50
40
30
20
10
0
NEGATIVE-
GOING
TRANSIENT
-40
-15
10
35
60
85
0.001
0.01
0.1
1
0.001
0.01
0.1
1
TEMPERATURE (°C)
OVERDRIVE VOLTAGE (V)
OVERDRIVE VOLTAGE (V)
_______________________________________________________________________________________
5
Micropower Adjustable Overvoltage
Protection Controllers
Pin Description
PIN
1–5
6
NAME
IN1–IN5
GND
FUNCTION
Overvoltage Detect Comparator Input. When any input exceeds 1V, the fault latch is set. Connect
unused inputs to GND.
Ground
Logic Input. ON turns on internal reference when high. Logic trip level is approximately 1.2V with 15%
7
ON
DP
hysteresis. When ON is low, the fault latch is reset. ON can be connected directly to V at the
DD
expense of supply current.
External P-Channel MOSFET Gate Driver Output. The output high level is V . The output low level is
DD
8
9
V
- 9.5V or GND, whichever is higher. This output is latched high when an overvoltage condition is
DD
detected.
Analog Supply Input. Use an external RC filter to eliminate excessive switching noise on V . When
DD
V
DD
V
is less than 2.7V, the fault latch is reset.
DD
Signal Overvoltage Condition Output. This open-drain N-channel output is latched low when an over-
voltage condition is detected. (MAX1807 only)
FAULT
10
Input Monitor Comparator. When TH is below 1V, DP goes high to turn off the external P-channel
switch. When TH exceeds 1.1V, DP goes low if there is no fault. Between 1V and 1.1V is the hysteresis
band where the output state of the TH comparator remains unchanged. (MAX1808 only)
TH
The MAX1808 has a TH input that turns off the P-chan-
nel switch if TH goes below 1V without affecting the
Detailed Description
The MAX1807/MAX1808 provide overvoltage protection
for systems with multiple supply rails. Very low output
voltage supplies can have an overvoltage before the
power-supply controller has sufficient supply voltage to
activate protection circuitry. The MAX1807/MAX1808
offer a system-wide approach to effectively protect the
loads and prevent catastrophic events.
fault latch. TH output is designed for low-battery detec-
tion. The comparator has 10% hysteresis, allowing the
battery voltage to rise when the load is removed without
reenabling the external P-channel switch.
The MAX1807 has a fault alert output (FAULT) instead
of the TH input. FAULT is an open-drain output, rated
for up to 28V, that directly reflects the state of the inter-
nal fault latch.
The MAX1807/MAX1808 are powered directly by the
main system input supply. A low output voltage from
DP activates a P-channel switch to supply power to the
rest of the system. As the rest of the system supplies
come up, the MAX1807/MAX1808 monitor each of them
for overvoltage conditions and safely disconnect the
input from the rest of the system if any supply malfunc-
tions occur due to a shorted MOSFET, shorted copper
trace, or malfunctioning supply. Built-in overvoltage
detectors in individual power supplies provide redun-
dancy.
IN1–IN5 Overvoltage Comparators
The overvoltage comparators have a 1V trip level. The
fault latch is set if any one of the five overvoltage com-
parators goes above the trip level. A limited input band-
width ensures that small glitches will not trigger an
overvoltage event (see IN_ Maximum Transient Pulse
Duration vs. Pulse Overdrive Voltage in the Typical
Operating Characteristics).
DP PFET Driver Output
The MAX1807/MAX1808 have a totem driver (DP) with
an active clamp that simplifies driving the external P-
The MAX1807/MAX1808 drive the main P-channel load
switch that powers the system. The driver includes
active clamping to safely drive a 12V P-channel MOS-
FET gate. If overvoltage is detected, the P-channel load
switch is turned off and the state is latched. The internal
channel load switch. The -9.5V V clamp eliminates
gs
complexity in circuits where V
exceeds the P-chan-
DD
nel FET’s maximum gate voltage. DP goes high and
turns off the P-channel switch during undervoltage
lockout, when ON is low, when TH is less than 1V, or if
an overvoltage fault occurs.
fault latch resets when V
is less than 2.7V (power
DD
cycled) or ON is pulled low (manual reset). When ON
is logic low, the P-channel switch is turned off (Table 1).
6
_______________________________________________________________________________________
Micropower Adjustable Overvoltage
Protection Controllers
The DP driver can sink and source significant current
disconnected from the battery. The comparator has a
limited bandwidth to ensure that small transients will not
shut down the system supplies.
and achieves fast turn-on and turn-off times even with
large P-channel switches. Adding a resistor in series
with DP can increase turn-on and turn-off times. To slow
the turn-on time without affecting the turn-off time, add
a diode in parallel with the resistor (Figure 1). The turn-
on time will be the product of the series resistor and the
gate-to-source capacitance of the P-channel FET:
Increase TH hysteresis by adding a resistor from TH to
one of the voltage rails disconnected by the P-channel
load switch, such as the 1.8V supply (Figure 2). Use
one of the lower voltage supplies to eliminate the
necessity of extremely large resistors to obtain reason-
able hysteresis. When the MAX1714 is on, the trip
threshold is lower than when the MAX1714 is off, pro-
t
= C ✕ R
gs
ON
The turn-off time will be the product of the gate-to-
source capacitance of the P-channel FET and the DP
source current of the MAX1807/MAX1808 (see DP
Source Current vs. (V
- V ) Voltage in the Typical
DP
DD
1N4148
Operating Characteristics).
V
DD
For very slow turn-off times, adding an external capaci-
tor between the gate and the source of the P-channel
FET eliminates the need for resistors with extremely
high values.
DP
R
MAX1807
MAX1808
SYSTEM
POWER
SUPPLIES
TH Input Comparator (MAX1808 Only)
TH input comparator can disconnect the load from the
battery when the battery voltage is too low. The falling
trip level is 1V, and the rising trip level is 1.1V. The
100mV hysteresis can prevent the load switch from
turning on when the battery voltage rises as the load is
Figure 1. External FET Gate Control
2V TO 28V
6.5M
2V TO 28V
6.5M
1M
V
V
DD
DD
TH
DP
DP
TH
1M
MAX1808
MAX1808
MAX1714
1.8V OR 0
GND
GND
10M
DEFAULT 10% HYSTERESIS
ADDING HYSTERESIS
✕
✕
V
= 1V + [1µA (1.8V - 1.0V) / 10MΩ] 6.5MΩ
V
V
= 1V + (1µA × 6.5MΩ) = 7.5V
TRIP
TRIP
✕
= 1V + (1µA - 0.08µA) 6.5MΩ
= 1V + (920nA 6.5MΩ) = 6.98V
= 1.1V + (1.1µA × 6.5MΩ) = 8.25V
UNTRIP
✕
✕
V
= 1.1V + [1.1µA - (0 - 1.1V) / 10MΩ] 6.5MΩ
UNTRIP
✕
= 1.1V + (1.1µA + 0.11µA) 6.5MΩ
✕
= 1.1V + (1.21µA 6.5MΩ) = 8.97V
Figure 2. Adding Hysteresis
_______________________________________________________________________________________
7
Micropower Adjustable Overvoltage
Protection Controllers
Table 1. MAX1807/MAX1808 State Table
V
ON
X
TH
X
IN1–IN5
DP
FAULT
COMMENT
DD
<2V
< 4.0V
X
Undefined Undefined
2 < V
X
X
X
X
HI
HI
Hi-Z
Hi-Z
DD
>4.0V
>4.0V
>4.0V
>4.0V
0
X
1
<1V
>1.1V
>1.1V
X
HI
Note that TH has 0.1V hysteresis (MAX1808 only)
1
All <1V
Any >1V
LO
HI
Hi-Z
LO
Only condition for PFET to be turned on
1
viding additional hysteresis. Turning off the chosen
supply will change the undervoltage trip levels.
Pin Configuration
FAULT Open-Drain N-Channel
Flag Output (MAX1807 Only)
TOP VIEW
The MAX1807 has an open-drain N-channel FAULT
output. The FAULT output directly reflects the state of
the internal fault latch, going low when an overvoltage
event occurs. The FAULT output can be used to signal
the system power-management microcontroller, trip a
resetable fuse, drive an external high-side driver, or for
other purposes.
IN1
IN2
IN3
IN4
IN5
1
2
3
4
5
10 FAULT (TH)
9
8
7
6
V
DD
MAX1807
MAX1808
DP
ON
GND
Undervoltage Lockout and Power-On
Reset (POR) Period
Undervoltage lockout holds DP high and FAULT in high
µMAX
( ) MAX1808 0NLY
impedance until V
exceeds the V
undervoltage
DD
DD
lockout threshold. When V
exceeds the undervoltage
DD
threshold, the DP and FAULT outputs remain un-
changed during the power-on reset period (60µs),
allowing the reference and comparators to settle.
Normal operation resumes after the POR period.
Chip Information
TRANSISTOR COUNT: 955
PROCESS: BiCMOS
8
_______________________________________________________________________________________
Micropower Adjustable Overvoltage
Protection Controllers
Typical Operating Circuit
5V
2.5V
1.8V
6.5M
V
3.3V
CORE
DD
1M
DP
IN1
IN2
TH
402k
150k
0.01µF
1M
MAX1808
IN3
IN4
682k
150k
ON
IN5
GND
121k
150k
150k
150k
261k
150k
THRESHOLDS: 1) 3.63V
2) 5.5V
3) 1.85V
4) 2.0V
5) 2.75V
_______________________________________________________________________________________
9
Micropower Adjustable Overvoltage
Protection Controllers
Package Information
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.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2000 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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