MAX16052 [MAXIM]
High-Voltage, Adjustable Sequencing/Supervisory Circuits; 高电压，可调节排序/监控电路
| 型号： | MAX16052 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | High-Voltage, Adjustable Sequencing/Supervisory Circuits |
| 文件： | 总12页 (文件大小：149K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-4144; Rev 1; 10/08
High-Voltage, Adjustable
Sequencing/Supervisory Circuits
2/MAX16053
General Description
Features
o 1.8% Accurate Adjustable Threshold Over
The MAX16052/MAX16053 are a family of small, low-
power, high-voltage monitoring circuits with sequenc-
ing capability. These miniature devices offer very wide
flexibility with an adjustable voltage threshold and an
external capacitor-adjustable time delay. These
devices are ideal for use in power-supply sequencing,
reset sequencing, and power switching applications.
Multiple devices can be cascaded for complex
sequencing applications.
Temperature
o Open-Drain (28V Tolerant) Output Allows
Interfacing to 12V Intermediate Bus Voltage
o Operates from V
of 2.25V to 16V
CC
o Low Supply Current (18µA typ)
o Capacitor-Adjustable Delay
o Active-High Logic-Enable Input
o Fully Specified from -40°C to +125°C
o Small 6-Pin SOT23 Package
A high-impedance input (IN) with a 0.5V threshold
allows an external resistive divider to set the monitored
threshold. The output (OUT) asserts high when the
input voltage rises above the 0.5V threshold and the
enable input (EN) is asserted high. When the voltage at
IN falls below 0.495V or when the enable input is
deasserted (EN = low), the output deasserts (OUT =
low). The MAX16052/MAX16053 provide a capacitor
programmable delay time from when the voltage at IN
rises above 0.5V to when the output is asserted.
Ordering Information
PIN-
TOP
PART
OUTPUT
PACKAGE
MARK
MAX16052AUT+T Open-Drain
MAX16053AUT+T Push-Pull
6 SOT23
6 SOT23
+ACLW
+ACLX
Note: All devices operate over the -40°C to +125°C operating
automotive temperature range.
+Denotes a lead-free/RoHS-compliant package.
The MAX16052 offers an active-high open-drain output
while the MAX16053 offers an active-high push-pull out-
put. Both devices operate from a 2.25V to 16V supply
voltage and feature an active-high enable input. The
MAX16052/MAX16053 are available in a tiny 6-pin
SOT23 package and are fully specified over the auto-
motive temperature range (-40°C to +125°C).
T = Tape and reel, offered in 2.5k increments.
Pin Configuration
TOP VIEW
1
2
3
EN
CDELAY
6
5
4
Applications
MAX16052
MAX16053
Automotive
Computers/Servers
Critical µP Monitoring
Set-Top Boxes
Telecom
GND
IN
V
CC
Medical Equipment
Intelligent Instruments
Portable Equipment
OUT
SOT23
Typical Operating Circuit
12V
DC-DC
CONVERTER
EN
V
CC
EN
V
CC
IN
0.9V
OUT
IN
OUT
EN
OUT
IN
MAX16052
MAX16052
DC-DC
CONVERTER
CDELAY
CDELAY
GND
GND
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
High-Voltage, Adjustable
Sequencing/Supervisory Circuits
ABSOLUTE MAXIMUM RATINGS
(All voltages referenced to GND.)
.........................................................................-0.3V to +30V
Continuous Power Dissipation (T = +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C)..........695.7mW
A
V
CC
OUT (push-pull, MAX16053) ......................-0.3V to (V
OUT (open-drain, MAX16052)................................-0.3V to +30V
EN, IN .........................................................-0.3V to (V + 0.3V)
+ 0.3V)
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
CC
CC
CDELAY....................................................................-0.3V to +6V
Input/Output Current (all pins).......................................... 20mA
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
= 2.25V to 16V, V = V , T = T = -40°C to +125°C, unless otherwise specified. Typical values are at V
= 3.3V and T =
CC A
CC
EN
CC
A
J
+25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SUPPLY
Operating Voltage Range
Undervoltage Lockout
V
2.25
1.8
16
2
V
V
CC
2/MAX16053
UVLO
V
falling (Note 2)
CC
V
V
V
V
= 3.3V
= 12V
= 3.3V
= 12V
18
23
22
29
37
45
47
57
CC
CC
CC
CC
MAX16052, no load
MAX16053, no load
V
Supply Current
I
µA
CC
CC
IN
Threshold Voltage
Hysteresis
V
V
V
V
rising, 2.25V ≤ V
falling
≤ 16V
CC
0.491
-40
0.500
5
0.509
+60
V
TH
IN
IN
IN
V
mV
nA
HYST
Input Current
I
= 0 or 16V
+5
IN
CDELAY
CDELAY Charge Current
CDELAY Threshold
I
V
V
V
V
= 0V
200
250
1.00
15
300
1.05
60
nA
V
CD
CDELAY
CDELAY
V
rising
0.95
TCD
≥ 2.25V, I
= 200µA
CC
CC
SINK
CDELAY Pulldown Resistance
R
Ω
CDELAY
≥ 3.3V, I
= 1mA
15
60
SINK
EN
EN Low Voltage
EN High Voltage
EN Leakage Current
OUT
V
0.5
V
V
IL
V
1.4
-55
IH
I
V
= 0V or V
+15
+55
nA
LEAK
EN
CC
V
V
V
V
V
≥ 1.2V, I
= 90µA
0.2
0.3
0.4
CC
CC
CC
CC
CC
SINK
OUT Low Voltage
(Open-Drain or Push-Pull)
V
≥ 2.25V, I
= 0.5mA
V
OL
SINK
> 4.5V, I
= 1mA
SINK
≥ 2.25V, I
= 500µA
0.8 x V
0.9 x V
SOURCE
CC
CC
OUT High Voltage
(Push-Pull, MAX16053)
V
V
OH
≥ 4.5V, I
= 800µA
SOURCE
OUT Leakage Current
(Open-Drain, MAX16052)
I
Output not asserted low, V
= 28V
OUT
150
nA
LKG
2
_______________________________________________________________________________________
High-Voltage, Adjustable
Sequencing/Supervisory Circuits
2/MAX16053
ELECTRICAL CHARACTERISTICS (continued)
(V
= 2.25V to 16V, V = V , T = T = -40°C to +125°C, unless otherwise specified. Typical values are at V
= 3.3V and T =
CC A
CC
EN
CC
A
J
+25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
TIMING
MAX16052, 100kΩ
pullup resistor,
= 0
30
30
C
CDELAY
µs
MAX16053,
= 0
V
V
V
= 3.3V,
rising,
CC
C
CDELAY
IN
IN
MAX16052, 100kΩ
pullup resistor,
= V + 25mV
TH
190
190
30
C
= 0.047µF
CDELAY
ms
t
DELAY
IN to OUT Propagation Delay
MAX16053,
= 0.047µF
C
CDELAY
MAX16052, 100kΩ
pullup resistor,
V
V
V
= 12V,
rising,
CC
C
= 0
CDELAY
IN
IN
= V + 25mV
TH
µs
MAX16053,
= 0
30
C
CDELAY
V
V
V
V
= 3.3V, V falling, V = V - 30mV
18
18
CC
CC
CC
CC
IN
IN
TH
t
DL
= 12V, V falling, V = V - 30mV
IN
IN
TH
= 2.25V, V = 0.525V, C
= 0
0.5
0.5
IN
CDELAY
Startup Delay (Note 3)
ms
= 12V, V = 12V, C
= 0
IN
CDELAY
EN Minimum Input Pulse Width
EN Glitch Rejection
t
1
µs
ns
MPW
100
250
MAX16052,
100kΩ pullup
resistor
V
= 3.3V
CC
From device
enabled to
device
V
V
V
= 12V
= 3.3V
= 12V
300
350
400
CC
CC
CC
EN to OUT Delay
t
ns
OFF
disabled
MAX16053
MAX16052,
100kΩ pullup
resistor,
V
V
= 3.3V
= 12V
14
14
CC
CC
µs
C
= 0
CDELAY
From device
disabled to
device
V
V
= 3.3V
= 12V
14
14
CC
CC
MAX16053,
= 0
EN to OUT Delay
t
PROP
C
CDELAY
enabled
MAX16052, 100kΩ pullup
resistor, C = 0.047µF
190
190
CDELAY
ms
MAX16053, C
0.047µF
=
CDELAY
Note 1: All devices are production tested at T = +25°C. Limits over temperature are guaranteed by design.
A
Note 2: When V
falls below the UVLO threshold, the outputs deassert (OUT goes low). When V
falls below 1.2V, the output
CC
CC
state cannot be determined.
Note 3: During the initial power-up, V
must exceed 2.25V for at least 0.5ms before OUT can go high.
CC
_______________________________________________________________________________________
3
High-Voltage, Adjustable
Sequencing/Supervisory Circuits
V
CC
V
ULCO
V
TH
+ 25mV
V
TH
- V
HYST
V
TH
IN
t < t
PROP
V
IH
V
IH
V
IH
V
IH
EN
5%
V
IL
V
IL
t < t
MPW
2/MAX16053
t > t
MPW
V
OH
OUT
V
OL
t
t
DL
t
t
t
PROP
PROP
DELAY
OFF
Figure 1. MAX16052/MAX16053 Timing Diagram (C
= 0)
CDELAY
4
_______________________________________________________________________________________
High-Voltage, Adjustable
Sequencing/Supervisory Circuits
2/MAX16053
Typical Operating Characteristics
(V
= 3.3V and T = +25°C, unless otherwise noted.)
A
CC
SUPPLY CURRENT
vs. TEMPERATURE
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
30
27
24
21
18
15
12
9
30
27
24
21
18
15
12
9
MAX16052
V
= 12V
CC
V
= 5V
CC
V
= 3.3V
CC
V
= 2.25V
CC
6
6
3
3
MAX16052
10 12 14 16
0
0
-40 -25 -10
5
20 35 50 65 80 95 110 125
0
2
4
6
8
TEMPERATURE (°C)
V
(V)
CC
IN THRESHOLD VOLTAGE
vs. TEMPERATURE
OUT DELAY vs. C
CDELAY
5000
4500
4000
3500
3000
2500
2000
1500
1000
500
502.0
501.5
501.0
500.5
500.0
499.5
499.0
498.5
498.0
0
0
100 200 300 400 500 600 700 800 900 1000
(nF)
-40 -25 -10
5
20 35 50 65 80 95 110 125
C
TEMPERATURE (°C)
CDELAY
OUTPUT LOW VOLTAGE
vs. SINK CURRENT
OUTPUT HIGH VOLTAGE
vs. SOURCE CURRENT
8
7
6
5
4
3
2
1
0
12
10
8
V
= 12V
CC
V
= 5V
CC
V
= 3.3V
CC
6
V
= 2.25V
CC
4
2
0
0
2
4
6
8
10 12 14 16 18 20
(mA)
0
2
4
6
8
10
12
14
I
I
(mA)
SINK
SOURCE
_______________________________________________________________________________________
5
High-Voltage, Adjustable
Sequencing/Supervisory Circuits
Typical Operating Characteristics
(T = +25°C, unless otherwise noted.)
A
MAXIMUM TRANSIENT DURATION
ENABLE TURN-ON DELAY
(MAX16053)
ENABLE TURN-OFF DELAY
(MAX16053)
vs. INPUT OVERDRIVE
MAX16052/53 toc08
MAX16052/53 toc09
300
250
200
EN
2V/div
EN
2V/div
RESET OCCURS ABOVE
THIS CURVE
150
100
50
OUT
2V/div
OUT
2V/div
0
1
10
100
1000
10μs/div
400ns/div
INPUT OVERDRIVE (mV)
2/MAX16053
IN LEAKAGE CURRENT
vs. TEMPERATURE
IN LEAKAGE CURRENT
vs. IN VOLTAGE
10
9
8
7
6
5
4
3
2
1
0
10
8
6
4
2
0
-2
-4
-6
-8
-10
V
= 16V
V
V
= 16V
= V = V
CC
CC
CC
V
= V
CC
EN
EN
IN
-40 -25 -10
5
20 35 50 65 80 95 110 125
0
2
4
6
8
10 12 14 16
TEMPERATURE (°C)
IN VOLTAGE (V)
6
_______________________________________________________________________________________
High-Voltage, Adjustable
Sequencing/Supervisory Circuits
2/MAX16053
Typical Operating Characteristics (continued)
(V
= 3.3V and T = +25°C, unless otherwise noted.)
CC
A
EN LEAKAGE CURRENT
vs. EN VOLTAGE
EN LEAKAGE CURRENT
vs. TEMPERATURE
10
8
10
9
8
7
6
5
4
3
2
1
0
6
4
2
0
-2
-4
-6
-8
-10
V
V
= 16V
CC
CC
V
V
= 16V
= V = V
EN
CC
CC
= V
IN
IN
0
2
4
6
8
10 12 14 16
-40 -25 -10
5
20 35 50 65 80 95 110 125
EN VOLTAGE (V)
TEMPERATURE (°C)
Pin Description
PIN
NAME
FUNCTION
Active-High Logic-Enable Input. Drive EN low to immediately deassert the output to its false state (OUT
= low) independent of V . With V above V , drive EN high to assert the output to its true state (OUT
1
EN
IN
IN
TH
= high) after the adjustable delay period. Connect EN to V , if not used.
CC
2
3
GND
IN
Ground
High-Impedance Monitor Input. Connect IN to an external resistive divider to set the desired monitor
threshold. The output changes state when V rises above 0.5V and when V falls below 0.495V.
IN
IN
Active-High Sequencer/Monitor Output. Open-drain (MAX16052) or push-pull (MAX16053). OUT is
asserted to its true state (OUT = high) when V is above V and the enable input is in its true state (EN
IN
TH
4
OUT
= high) after the capacitor-adjusted delay period. OUT is deasserted to its false state (OUT = low)
immediately after V drops below 0.495V or the enable input is in its false state (EN = low). The
IN
MAX16052 open-drain output requires an external pullup resistor.
Supply Voltage Input. Connect a 2.25V to 16V supply to V
bypass with a 0.1µF ceramic capacitor to GND.
to power the device. For noisy systems,
CC
5
6
V
CC
Capacitor-Adjustable Delay Input. Connect an external capacitor (C
) from CDELAY to GND to
6
CDELAY
CDELAY set the IN-to-OUT and EN-to-OUT delay period. For V rising, t
IN
= (C
x 4.0 x 10 ) + 30µs.
CDELAY
DELAY
6
For EN rising, t
= (C
x 4.0 x 10 ) + 14µs.
PROP
CDELAY
_______________________________________________________________________________________
7
High-Voltage, Adjustable
Sequencing/Supervisory Circuits
V
CC
V
CC
INTERNAL
/UVLO
INTERNAL
V /UVLO
CC
REF
REF
V
CC
IN
IN
OUT
GND
0.5V
0.5V
CONTROL
LOGIC
CONTROL
LOGIC
EN
EN
OUT
GND
250nA
250nA
1.0V
1.0V
MAX16052
MAX16053
2/MAX16053
CDELAY
CDELAY
Figure 2. Simplified Functional Diagram
Table 1. MAX16052/MAX16053
Detailed Description
The MAX16052/MAX16053 family of high-voltage,
sequencing/supervisory circuits provide adjustable
voltage monitoring for inputs down to 0.5V. These
devices are ideal for use in power-supply sequencing,
reset sequencing, and power-switching applications.
Multiple devices can be cascaded for complex
sequencing applications.
IN
EN
Low
High
Low
OUT
Low
Low
Low
V
V
V
< V
< V
> V
IN
IN
IN
TH
TH
TH
OUT = High Impedance
(MAX16052)
V
> V
High
IN
TH
The MAX16052/MAX16053 perform voltage monitoring
using a high-impedance input (IN) with an internally
fixed 0.5V threshold. When the voltage at IN falls below
0.5V or when the enable input is deasserted (EN = low)
OUT = V
(MAX16053)
CC
Supply Input (V
)
CC
The device operates with a V
supply voltage from
CC
OUT goes low. When V rises above 0.5V and the
IN
2.25V to 16V. In order to maintain a 1.8% accurate
threshold at IN, V must be above 2.25V. When V
enable input is asserted (EN = high), OUT goes high
after a capacitor-adjustable time delay.
CC
CC
falls below the UVLO threshold, the output deasserts
low. When V falls below 1.2V, the output state is not
With V above 0.5V, the enable input can be used to
IN
turn on or off the output. Table 1 details the output state
depending on the various input and enable conditions.
CC
guaranteed. For noisy systems, connect a 0.1µF
ceramic capacitor from V
device as possible.
to GND as close to the
CC
8
_______________________________________________________________________________________
High-Voltage, Adjustable
Sequencing/Supervisory Circuits
2/MAX16053
additional variation in threshold, for example) and cal-
culate R1 based on the desired monitored voltage
using the following formula:
Monitor Input (IN)
Connect the center point of a resistive divider to IN to
monitor external voltages (see R1 and R2 of Figure 4). IN
has a rising threshold of V = 0.5V and a falling thresh-
TH
old of 0.495V (5mV hysteresis). When V rises above
IN
⎡
⎢
⎣
⎤
V
MONITOR
R1= R2 ×
−1
⎥
⎦
V
and EN is high, OUT goes high after the adjustable
TH
V
TH
t
period. When V falls below 0.495V, OUT goes
IN
DELAY
low after a 18µs delay. IN has a maximum input current
of 60nA, so large value resistors are permitted without
adding significant error to the resistive divider.
where V
TH
is the desired monitored voltage and
MONITOR
is the reset input threshold (0.5V).
V
Pullup Resistor Values (MAX16052 Only)
Adjustable Delay (CDELAY)
The exact value of the pullup resistor for the open-drain
output is not critical, but some consideration should be
made to ensure the proper logic levels when the device
When V rises above V
with EN high, the internal
TH
IN
250nA current source begins charging an external
capacitor connected from CDELAY to GND. When the
voltage at CDELAY reaches 1V, the output asserts
is sinking current. For example, if V
= 2.25V and the
CC
pullup voltage is 28V, keep the sink current less than
0.5mA as shown in the Electrical Characteristics table.
As a result, the pullup resistor should be greater than
56kΩ. For a 12V pullup, the resistor should be larger
than 24kΩ. Note that the ability to sink current is depen-
(OUT goes high). When the output asserts, C
is
CDELAY
immediately discharged. Adjust the delay (t
) from
DELAY
when V rises above V (with EN high) to OUT going
IN
TH
high according to the equation:
dent on the V
supply voltage.
CC
6
t
= C
× (4 ×10 Ω) + (30μs)
CDELAY
DELAY
Ensuring a Valid OUT
= 0V (Push-Pull OUT)
where t
is in seconds and C
is in Farads.
Down to V
DELAY
CDELAY
CC
In applications in which OUT must be valid down to
CC
Enable Input (EN)
The MAX16052/MAX16053 offer an active-high enable
input (EN). With V above V , drive EN high to force
OUT high after the capacitor-adjustable delay time. The
EN-to-OUT delay time (t ) can be calculated from
when EN goes above the EN threshold using the equation:
V
= 0V, add a pulldown resistor between OUT and
GND for the push-pull output (MAX16053). The resistor
sinks any stray leakage currents, holding OUT low
(Figure 3). The value of the pulldown resistor is not criti-
cal; 100kΩ is large enough not to load OUT and small
enough to pull OUT to ground. The external pulldown
cannot be used with the open-drain OUT output.
IN
TH
PROP
6
t
= C
× (4 ×10 Ω) + (14μs)
CDELAY
PROP
V
CC
where t
is in seconds and C
is in Farads.
PROP
CDELAY
Drive EN low to force OUT low within 300ns for the
MAX16052 and within 400ns for the MAX16053.
V
CC
Output (OUT)
The MAX16052 offers an active-high, open-drain output
while the MAX16053 offers an active-high push-pull out-
OUT
put. The push-pull output is referenced to V . The
CC
MAX16053
open-drain output requires a pullup resistor and can be
pulled up to 28V.
100kΩ
Applications Information
Input Threshold
The MAX16052/MAX16053 monitor the voltage on IN
with an external resistive divider (Figure 4). R1 and R2
can have very high values to minimize current con-
sumption due to low IN leakage currents (60nA max).
Set R2 to some conveniently high value (200kΩ for 1%
GND
Figure 3. Ensuring OUT Valid to V
= 0V
CC
_______________________________________________________________________________________
9
High-Voltage, Adjustable
Sequencing/Supervisory Circuits
a lower drain-to-source on-resistance. However, an n-
channel MOSFET requires a sufficient V voltage to
Typical Application Circuits
GS
Figures 4–6 show typical applications for the
MAX16052/MAX16053. Figure 4 shows the MAX16052
used with a p-channel MOSFET in an overvoltage pro-
tection circuit. Figure 5 shows the MAX16053 in a low-
voltage sequencing application using an n-channel
MOSFET. Figure 6 shows the MAX16053 used in a mul-
tiple output sequencing application.
fully enhance it for a low R
. The application
DS_ON
shown in Figure 5 shows the MAX16053 in a switch
sequencing application using an n-channel MOSFET.
Similarly, if a higher voltage is present in the system, the
open-drain version can be used in the same manner.
Power-Supply Bypassing
In noisy applications, bypass V
to ground with a
CC
Using an n-Channel Device
for Sequencing
In higher power applications, using an n-channel
device reduces the loss across the MOSFET as it offers
0.1µF capacitor as close to the device as possible. The
additional capacitor improves transient immunity. For
fast-rising V
required.
transients, additional capacitors may be
CC
3.3V ALWAYS-ON
1.2V
5V BUS
INPUT
1.2V
OUTPUT
N
P
2/MAX16053
0 TO 28V
MONITORED
3.3V
EN
V
CC
R
PULLUP
EN
V
CC
OUT
R1
R1
OUT
MAX16053
MAX16052
IN
IN
CDELAY
CDELAY
R2
R2
C
CDELAY
C
GND
CDELAY
GND
Figure 4. Overvoltage Protection
Figure 5. Low-Voltage Sequencing Using an n-Channel MOSFET
10 ______________________________________________________________________________________
High-Voltage, Adjustable
Sequencing/Supervisory Circuits
2/MAX16053
1.2V
2.5V
1.8V
3.3V
DC-DC
DC-DC
DC-DC
DC-DC
5V BUS
EN
EN
EN
EN
SYSTEM
ENABLE
V
CC
V
CC
V
V
CC
EN
EN
EN
CC
EN
IN
IN
IN
IN
MAX16053
MAX16053
MAX16053
MAX16053
OUT
OUT
OUT
OUT
GND
GND
GND
GND
C
C
C
C
CDELAY
CDELAY
CDELAY
CDELAY
Figure 6. Multiple Output Sequencing
Chip Information
Package Information
For the latest package outline information, go to
PROCESS: BiCMOS
www.maxim-ic.com/packages.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
6 SOT23
U6+1
21-0058
______________________________________________________________________________________ 11
High-Voltage, Adjustable
Sequencing/Supervisory Circuits
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
DESCRIPTION
0
5/08
Initial release
—
Update Adjustable Delay (CDELAY) and Power-Supply Bypassing
sections.
1
10/08
8, 10
2/MAX16053
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.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2008 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
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