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19-3672; Rev 0; 5/05
50mA/100mA Current-Limit Switches with NO-LOAD Flag in DFN
General Description
The MAX4826-MAX4831 family of switches has internal current limiting to prevent host devices from being damaged due to faulty load conditions. These analog switches have a low 0.7 on-resistance and operate from a +2.3V to +5.5V input voltage range. These devices are available with guaranteed 50mA and 100mA current limits, making them ideal for loadswitching applications. In addition to the current-limit fault flag (FFLG), an open-drain no-load flag indicator (NOLD) notifies the system when the current through the switch is less than 10mA (MAX4826-MAX4829), or 5mA (MAX4830/MAX4831). When the switch is on and a load is connected to the port, a guaranteed blanking time of 14ms ensures that the transient voltages settle down. If, after this blanking time, the load current is greater than the current limit, the MAX4826/MAX4828/MAX4830 enter a latch-off state where the switch is turned off, and FFLG is issued to the microprocessor. The switch can be turned on again by cycling the power or ON. The MAX4827/MAX4829/MAX4831 have an autoretry feature where the switch turns off after the blanking time, and then continuously checks to see if the overload condition is present. The current-limit fault flag (FFLG) is issued and remains low until after the fault condition is removed. The switch remains on after the overload condition disappears. The MAX4826-MAX4831 operate over the extended -40C to +85C temperature range, and are available in a tiny space-saving, 1mm x 1.5mm, 6-pin DFN package. Thermal Shutdown Protection Reverse-Current Protection 0.7 On-Resistance (MAX4826-MAX4831) 14ms Guaranteed Blanking Time Fault Flag (FFLG) No-Load Flag (NOLD) 65A Supply Current 8A Latch-Off Current 0.01A Shutdown Current +2.3V to +5.5V Supply Range Undervoltage Lockout Fast Current-Limit Response Time 6-Pin DFN Package (1mm x 1.5mm)
Features
Guaranteed Current Limit: 50mA, 100mA
MAX4826-MAX4831
Applications
GPS Systems Cell Phones Digital Still Cameras PDAs and Palmtop Devices MP3 Players
Ordering Information/Selector Guide
PART MAX4826ELT MAX4827ELT* MAX4828ELT* MAX4829ELT MAX4830ELT MAX4831ELT* PINPACKAGE 6 DFN 6 DFN 6 DFN 6 DFN 6 DFN 6 DFN MIN FULLLOAD LIMIT (mA) 50 50 100 100 50 50 MAX NOLOAD LIMIT (mA) 10 10 10 10 5 5 ON-RESISTANCE () TA = +25C 1 1 1 1 2 2 MODE Latch Off Autoretry Latch Off Autoretry Latch Off Autoretry TOP MARK AK AL AM AN AO AP PKG CODE L611-1 L611-1 L611-1 L611-1 L611-1 L611-1
Note: All devices operate over the -40C to +85C operating range. *Future product--contact factory for availability. Pin Configuration appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
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.
50mA/100mA Current-Limit Switches with NO-LOAD Flag in DFN MAX4826-MAX4831
ABSOLUTE MAXIMUM RATINGS
IN, ON, FFLG, NOLD, OUT to GND .........................-0.3V to +6V OUT Short Circuit to GND .................................Internally Limited Continuous Power Dissipation (TA = +70C) 6-Pin DFN (derate 2.1mW/C above +70C) ...............168mW Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
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
(VIN = +2.3V to +5.5V, TA = -40C to +85C, unless otherwise noted. Typical values are at VIN = +3.3V, TA = +25C.) (Note 1)
PARAMETER Operating Voltage Quiescent Current Latch-Off Current (Note 2) Shutdown Current Shutdown Reverse Leakage Forward-Current Limit SYMBOL VIN IQ ILATCH ISHDN ISHDNRV IFWD VON = VIN, IOUT = VIN = +2.3V to +5.0V 0, switch on VIN = +5.0V to +5.5V VON = VIN = 3.3V, after an overcurrent fault (MAX4826/MAX4828/MAX4830) VON = 0, IOUT = 0mA VON = 0, VIN = +2.3V, VOUT = +5.5V (MAX4826/MAX4827/MAX4830/MAX4831) RL = 10 (MAX4828/MAX4829) RL = 5 Reverse-Current Limit IREV VOUT - VIN < 0.5V (MAX4826/MAX4827/MAX4830/MAX4831) VOUT - VIN < 0.5V (MAX4828/MAX4829) No-Load Threshold ON Input Leakage Off-Switch Leakage Undervoltage Lockout Undervoltage Lockout Hysteresis INLTH IONLK ISWLK UVLO UVLOHYS TA = +25C, IOUT = 20mA On-Resistance RON TA = -40C to +85C, IOUT = 20mA (MAX4826-MAX4829) (MAX4830/MAX4831) (MAX4826-MAX4829) (MAX4830/MAX4831) 2.0 0.8 ISINK = 1mA 0.4 MAX4826-MAX4829 MAX4830/MAX4831 VON = VIN or GND VIN = +5.5V, VON = 0, VOUT = 0 Rising edge 1.8 100 0.7 1.4 1.0 2.0 1.3 2.6 V V V 1.0 0.5 -1 0.01 50 100 CONDITIONS MIN 2.3 65 TYP MAX 5.5 100 120 8 0.01 0.01 15 1 1 120 240 120 240 10.0 5.0 +1 1 2.2 mA A A V mV mA UNITS V A A A A mA
ON Input-Logic-High Voltage ON Input-Logic-Low Voltage FFLG, NOLD Output-Logic-Low Voltage
VIH VIL
2
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50mA/100mA Current-Limit Switches with NO-LOAD Flag in DFN
ELECTRICAL CHARACTERISTICS (continued)
(VIN = +2.3V to +5.5V, TA = -40C to +85C, unless otherwise noted. Typical values are at VIN = +3.3V, TA = +25C.) (Note 1)
PARAMETER FFLG, NOLD Output-High Leakage Current Thermal Shutdown Thermal-Shutdown Hysterisis DYNAMIC Turn-On Time Turn-Off Time Blanking Time Short-Circuit Current-Limit Response Time No-Load-Detection Response Time Retry Time tRETRY tBLANK ON from low to high; IOUT = 10mA, CL = 0.1F (Note 3) ON from high to low; IOUT =10mA, CL = 0.1F (Note 3) Overcurrent fault VON = VIN = +3.3V, short circuit applied to OUT IOUT falling step signal from 15mA to 0mA, CL = 0.1F Overcurrent fault (Figure 2) (Note 4) 196 14 5 60 840 50 30 60 s ns ms s s ms SYMBOL CONDITIONS VIN = VFFLG = VNOLD = +5.5V +150 15 MIN TYP MAX 1 UNITS A C C
MAX4826-MAX4831
Note 1: All parts are 100% tested at TA = +25C. Limits at TA = -40C to +85C are guaranteed by design. Note 2: Latch-off current does not include the current flowing into FFLG and NOLD. Note 3: Turn-on time is defined as the time taken for the current through the switch to go from 0mA to full load. Turn-off time is defined as the time taken for the current through the switch to go from full load to 0mA. Note 4: Retry time is typically 14x the blanking time.
Typical Operating Characteristics
(VIN = +3.3V, TA = +25C, unless otherwise noted.)
QUIESCENT SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4826 toc01
QUIESCENT SUPPLY CURRENT vs. TEMPERATURE
MAX4826 toc02
LATCH-OFF CURRENT vs. TEMPERATURE
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 VON = VIN
MAX4826 toc03
90 80 SUPPLY CURRENT (A) 70 60 50 40 30 20 10 0
VON = VIN VIN = +2.3V TO +5.5V
90 80 SUPPLY CURRENT (A) 70 60 50 40 30 20 10 0
VON = VIN
VIN = 5V VIN = 3.3V
LATCH-OFF CURRENT (A)
VIN = 5V
VIN = 3.3V
2.3
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
-40
-15
10
35
60
85
-40
-15
10
35
60
85
SUPPLY VOLTAGE (V)
TEMPERATURE (C)
TEMPERATURE (C)
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50mA/100mA Current-Limit Switches with NO-LOAD Flag in DFN MAX4826-MAX4831
Typical Operating Characteristics (continued)
(VIN = +3.3V, TA = +25C, unless otherwise noted.)
SHUTDOWN REVERSE LEAKAGE CURRENT vs. TEMPERATURE
MAX4826 toc05
SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE
MAX4826 toc04
SHUTDOWN LEAKAGE CURRENT vs. TEMPERATURE
10 SHUTDOWN LEAKAGE CURRENT (nA) 10 REVERSE LEAKAGE CURRENT (nA)
SHUTDOWN SUPPLY CURRENT (nA)
VON = VIN = OV VOUT = 5V 1
1
1
0.1 VIN = 5V 0.01 VIN = 3.3V 0.001
0.1 VIN = 5V 0.01 VIN = 3.3V 0.001
0.1
0.01
0.001
0.0001 -40 -15 10 35 60 85 TEMPERATURE (C)
0.0001 -40 -15 10 35 60 85 TEMPERATURE (C)
0.0001 -40 -15 10 35 60 85 TEMPERATURE (C)
LATCH-OFF-LEAKAGE CURRENT vs. TEMPERATURE
MAX4826 toc07
NORMALIZED ON-RESISTANCE vs. TEMPERATURE
MAX4826 toc08
OUTPUT CURRENT vs. OUTPUT VOLTAGE
MAX4826 toc09
10 LATCH-OFF-LEAKAGE CURRENT (nA)
1.4 VON = VIN = 3.3V 1.2 1.0 0.8 0.6 0.4
300 250 OUTPUT CURRENT (mA) 200 MAX4828/MAX4829 150 100 50 0 MAX4826/MAX4827/MAX4830/MAX4831
1
0.1 VIN = 5V 0.01 VIN = 3.3V 0.001
NORMALIZED RON
0.2 0 -40 -15 10 35 60 85 -40 -15 10 35 60 85 TEMPERATURE (C) TEMPERATURE (C)
0.0001
0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 VIN - VOUT (V)
SWITCH TURN-ON/OFF TIMES vs. TEMPERATURE
MAX4826 toc10
FLAG-BLANKING TIMEOUT vs. TEMPERATURE
MAX4826 toc11
100 ON 10 TURN-ON/OFF TIMES (s) VIN = 3.3V VIN = 5V
40 35 FLAG-BLANKING TIME (ms) 30 25 20 15
1
0.1 OFF 0.01 ILOAD = -10mA -40 -15 10 35 60 85
0.001
10 -40 -15 10 35 60 85 TEMPERATURE (C)
TEMPERATURE (C)
4
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MAX4826 toc06
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50mA/100mA Current-Limit Switches with NO-LOAD Flag in DFN MAX4826-MAX4831
Typical Operating Characteristics (continued)
(VIN = +3.3V, TA = +25C, unless otherwise noted.)
CURRENT-LIMIT RESPONSE
MAX4826 toc12
CURRENT-LIMIT RESPONSE
MAX4826 toc13
VON = 3.3V VOUT = GND
CIN = 1F COUT = 1F VIN 2V/div VON 2V/div
VON = 3.3V VOUT = GND
CIN = 1F COUT = 1F VIN = VON 1V/div
IOUT 100mA/div
IOUT 100mA/div
40s/div
20s/div
CURRENT-LIMIT RESPONSE (OUT SHORTED TO GND)
MAX4826 toc14
SWITCH TURN-ON-TIME RESPONSE
MAX4826 toc15
VIN 2V/div VOUT 2V/div
VIN = 3.3V ILOAD = 10mA VON 2V/div
IOUT 100mA/div IOUT 2A/div 40s/div 100s/div
SWITCH TURN-OFF-TIME RESPONSE
MAX4826 toc16
FLAG-BLANKING RESPONSE
MAX4826 toc17
VIN = 3.3V ILOAD = 10mA VON 2V/div
VIN 2V/div
VON 2V/div
IOUT 10mA/div
FFLG 2V/div
IOUT 100mA/div 100ns/div 4ms/div
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50mA/100mA Current-Limit Switches with NO-LOAD Flag in DFN MAX4826-MAX4831
Pin Description
PIN 1 2 3 4 NAME IN GND OUT FFLG Ground Switch Output. Bypass OUT with a 0.1F capacitor to ground Current-Limit Fault Output. FFLG is an open-drain output. FFLG goes low when the device stays in forward- or reverse-current limit for more than the blanking time period. FFLG is high impedance when a fault is not present or when ON is low. No-Load Flag Output. NOLD is an open-drain output. NOLD goes low when a load of less than 10mA (MAX4826-MAX4829) or 5mA (MAX4830/MAX4831) is delivered to the output. NOLD is high impedance when a fault is not present or when ON is low. Active-High Switch-On Input. Drive ON high to turn the switch on. FUNCTION Input. Bypass IN with a 0.1F ceramic capacitor to ground.
5 6
NOLD ON
Detailed Description
The MAX4826-MAX4831 are forward-/reverse-currentlimited switches that operate from a +2.3V to +5.5V input voltage range and guarantee a 50mA and 100mA minimum current-limit threshold for different options. The voltage drop across an internal sense resistor is compared to two reference voltages to indicate a forward- or reverse-current-limit fault. When the load current exceeds the preset current limit for greater than the fault-blanking time, the switch opens. The MAX4827/MAX4829/MAX4831 have an autoretry function that turns on the switch again after an internal retry time expires. If the faulty load condition is still present after the blanking time, the switch turns off again and the cycle is repeated. If the faulty load condition is not present, the switch remains on. The MAX4826/MAX4828/MAX4830 do not have the autoretry option, and the switch remains in latch-off mode until ON or the input power is cycled from high to low and then high again. The undervoltage lockout (UVLO) circuit prevents erroneous switch operation when the input voltage goes too low during startup conditions.
Reverse-Current Protection
The MAX4826-MAX4831 limit the reverse current (VOUT to VIN) from exceeding the maximum IREV value. The switch is shut off and FFLG is asserted if the reversecurrent-limit condition persists for more than the blanking time. This feature prevents excessive reverse currents from flowing through the device.
Switch-On/Off Control
Toggle ON high to enable the current-limited switches. The switches are continuously on only if VIN exceeds the UVLO threshold (typically 2V) and there is no fault. When a forward-/reverse-current fault is present or the die exceeds the thermal-shutdown temperature of +150C, OUT is internally disconnected from IN, and the supply current decreases to 8A (latch off). The switch is now operating in one of its off states. The switch off state also occurs when driving ON low, thus reducing the supply current (shutdown) to 0.01A. Table 1 illustrates the ON/OFF state of the MAX4826- MAX4831 current-limit switches.
Table 1. MAX4826-MAX4831 Switch Truth Table
ON Low High High FAULT X Undervoltage lockout Thermal OFF OFF OFF immediately (tBLANK period does not apply). OFF after tBLANK period has elapsed. High Current limit ON during tBLANK period, OFF during tRETRY period for the MAX4827/MAX4829/MAX4831. Cycle repeats until fault is removed. SWITCH ON/OFF SUPPLY CURRENT MODE Shutdown Latch off Latch off Latch off See the Autoretry section
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50mA/100mA Current-Limit Switches with NO-LOAD Flag in DFN MAX4826-MAX4831
tBLANK tRETRY tBLANK tBLANK CURRENT LIMIT LOAD CURRENT SHORT CONDITION REMOVED
VIN VON LOAD CURRENT
ON
NO-LOAD THRESHOLD
CURRENT LIMIT
60s NOLD STATUS
60s
SWITCH STATUS OFF
Figure 1. MAX4826-MAX4831 No-Load Flag Response
Figure 2. MAX4827/MAX4829/MAX4831 Autoretry Fault Blanking Diagram
tBLANK tBLANK
FFLG Indicator
The MAX4826-MAX4831 feature a current-limit fault output, FFLG. Whenever a current-limit fault is activated, FFLG goes low and the switch turns off. FFLG is an open-drain output transistor and requires an external pullup resistor from FFLG to IN. During shutdown (ON is low), the pulldown on the FFLG output is released to limit power dissipation. FFLG goes low when any of the following conditions occur: * The die temperature exceeds the thermal shutdown temperature limit of +150C. * The device is in current limit for more than the fault-blanking period. * VIN is below the UVLO threshold.
LOAD CURRENT ON SWITCH STATUS OFF ON PIN VOLTAGE
FFLG PIN STATUS (a) tBLANK tBLANK
NOLD Indicator
The MAX4826-MAX4831 feature a no-load flag output, NOLD (Figure 1). This output is pulled low every time the current coming out of the switch is less than 10mA (MAX4826-MAX4829), or 5mA (MAX4830/MAX4831). NOLD is an open-drain output transistor and requires an external pullup resistor from NOLD to a supply up to +5.5V. Current through the switch is intended to be positive (from IN to OUT), and for currents that are large in magnitude but negative in sign (OUT to IN), NOLD asserts low. For options with the autoretry feature (MAX4827/MAX4829/MAX4831), the NOLD output is high impedance during the tRETRY period when a forward-current-limit condition is present. However, NOLD is pulled low if a reverse current-limit condition is present during the tRETRY period. A constant time filter is present at the output of NOLD that gives a 60s delay when a no-load condition is asserted. Deassertion of NOLD is not delayed. During shutdown (ON is low), the pulldown on NOLD is released to limit power dissipation.
LOAD CURRENT ON SWITCH STATUS
OFF UVLO
IN PIN VOLTAGE FFLG PIN STATUS
(b)
Figure 3. MAX4826/MAX4828/MAX4830 Latch-Off Fault Blanking
Autorety (MAX4827/MAX4829/MAX4831)
When the forward- or reverse-current-limit threshold is exceeded, the tBLANK timer begins counting (Figure 2). The timer resets if the overcurrent condition disappears before tBLANK has elapsed. A retry time delay, tRETRY,
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50mA/100mA Current-Limit Switches with NO-LOAD Flag in DFN MAX4826-MAX4831
is started immediately after tBLANK has elapsed, and during that time the switch is latched off. At the end of tRETRY, the switch is turned on again. If the fault still exists, the cycle is repeated. If the fault has been removed, the switch stays on. The autoretry feature saves system power in the case of an overcurrent or short-circuit condition. During tBLANK, when the switch is on, the supply current is at the current limit. During tRETRY, when the switch is off, no current flows through the switch. Instead of observing the full load current, the switch sees the equivalent load current, multiplied by the duty cycle or ISUPPLY = ILOAD x tBLANK / (tBLANK + tRETRY). With a typical tBLANK = 37ms and typical tRETRY = 518ms, the duty cycle is 6% which results in a 94% power savings, as opposed to the switch being on the entire time. The duty cycle is consistent across the process and devices.
Applications Information
Input Capacitor
To limit the input voltage drop during momentary output short-circuit conditions, connect a capacitor from IN to GND. A 0.1F ceramic capacitor is adequate for most applications; however, higher capacitor values further reduce the voltage drop at the input and are recommended for lower voltage applications.
Output Capacitance
Connect a 0.1F capacitor from OUT to GND. This capacitor helps prevent inductive parasitics from pulling OUT negative during turn-off, thus preventing the MAX4826-MAX4831 from tripping erroneously. If the load capacitance is too large, current may not have enough time to charge the capacitance, and the device assumes that there is a faulty load condition. The maximum capacitive load value that can be driven from OUT is obtained by the following formula: CMAX < IFWD _ MIN x tBLANK _ MIN VIN
Latch Off (MAX4826/MAX4828/MAX4830)
When the forward- or reverse-current-limit threshold is exceeded, the tBLANK timer begins counting. The timer resets if the overcurrent condition disappears before tBLANK has elapsed. The switch is shut off if the overcurrent condition continues up to the end of the blanking time. Reset the switch by either toggling ON (Figure 3a), or cycling the input voltage below UVLO, typically 2V (Figure 3b).
Layout and Thermal Dissipation
To optimize the switch response time to output shortcircuit conditions, it is very important to keep all traces as short as possible to reduce the effect of undesirable parasitic inductance. Place input and output capacitors as close as possible to the device (no more than 5mm). IN and OUT pins must be connected with short traces to the power bus. During normal operation, the power dissipation is small and the package temperature change is minimal. If the output is continuously shorted to ground at the maximum supply voltage, the operation of the switches with the autoretry option does not cause problems because the total power dissipated during the short is scaled by the duty cycle: PMAX < VIN _ MAX x IOUT _ MAX x t BLANK t RETRY + t BLANK = 88mW
Fault Blanking
The MAX4826-MAX4831 feature 14ms (min) fault blanking. Fault blanking allows current-limit faults, including momentary short-circuit faults that occur when hot swapping a capacitive load. Fault blanking also ensures that no fault is issued during power-up. When a load transient causes the device to enter the current limit, an internal counter starts. If the load-transient fault persists beyond the fault-blanking timeout, FFLG asserts low. Load-transient faults less than tBLANK do not cause FFLG assertion. Only current-limit faults are blanked. A thermal fault and input voltage drops below the UVLO threshold cause FFLG to assert immediately. These faults do not wait for the blanking time.
Thermal Shutdown
The MAX4826-MAX4831 have a thermal-shutdown feature to protect the devices from overheating. The switch turns off and FFLG goes low immediately (no fault blanking) when the junction temperature exceeds +150C. The switches with the autoretry feature turn back on when the device temperature drops approximately 15C. The switches with the latch-off feature require ON cycling.
where, VIN_MAX = 5.5V, IOUT_MAX = 240mA, tBLANK = 37ms, and tRETRY = 518ms. Attention must be given to the MAX4826/MAX4828/ MAX4830 where the latch-off condition must be manually reset by toggling ON from high to low. If the latch-off time duration is not sufficiently high, it is possible for the device to reach the thermal shutdown threshold and never be able to turn the device on until it cools down.
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50mA/100mA Current-Limit Switches with NO-LOAD Flag in DFN MAX4826-MAX4831
Chip Information
TRANSISTOR COUNT: 1175 PROCESS: BiCMOS
Pin Configuration
TOP VIEW OF BOTTOM LEADS
ON 6 NOLD 5 FFLG 4
Typical Operating Circuit
+2.3V TO +5.5V
IN ON P
MAX4826- MAX4831
TO EXTERNAL PORT OUT 1 IN 2 GND 3 OUT
MAX4826- MAX4831
FFLG
NOLD GND
DFN
Functional Diagram
CURRENT < 5mA DETECTOR (MAX4830/MAX4831) CURRENT < 10mA DETECTOR (MAX4826-MAX4829)
NOLD N
REVERSE-CURRENT DETECTOR FLAG BLANKING-TIME CIRCUITRY GND FORWARD-CURRENT DETECTOR N
IN
N
GND OUT
ON
UNDERVOLTAGE LOCKOUT GND
+2.0V
LOGIC AUTORETRY
MAX4826-MAX4831
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50mA/100mA Current-Limit Switches with NO-LOAD Flag in DFN MAX4826-MAX4831
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.)
MAX4826-MAX4831
3
A
4 TOPMARK 2
e
5
b
6 PIN 1 0.075x45
PIN 1 INDEX AREA
AAA
1
E
L
L2
3
2 A A
1
D TOP VIEW
A1 SIDE VIEW
L1
BOTTOM VIEW
b
A A1 D E L L1 L2 b e
COMMON DIMENSIONS MIN. 0.64 -1.45 0.95 0.30 --0.17 NOM. 0.72 0.20 1.50 1.00 0.35 --0.20 0.50 BSC. MAX. 0.80 -1.55 1.05 0.40 0.08 0.05 0.23
SECTION A-A
TITLE:
PACKAGE OUTLINE, 6L uDFN, 1.5x1.0x0.8mm
APPROVAL DOCUMENT CONTROL NO. REV.
-DRAWING NOT TO SCALE-
21-0147
C
1
1
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 (c) 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc.
6L UDFN.EPS

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