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MAX1693EUBMAXN/a116avaiUSB Current-Limited Switches with Fault Blanking
MAX1693EUBMAXINN/a134avaiUSB Current-Limited Switches with Fault Blanking
MAX1693EUBMAXIM ?N/a17avaiUSB Current-Limited Switches with Fault Blanking
MAX1694EUBMAXN/a643avaiUSB Current-Limited Switches with Fault Blanking
MAX1694EUBMAXIMN/a100avaiUSB Current-Limited Switches with Fault Blanking
MAX1694EUBMAXIM ?N/a120avaiUSB Current-Limited Switches with Fault Blanking


MAX1694EUB ,USB Current-Limited Switches with Fault BlankingELECTRICAL CHARACTERISTICS(V = +5V, T = 0°C to +85°C, unless otherwise noted. Typical values are at ..
MAX1694EUB ,USB Current-Limited Switches with Fault BlankingFeaturesThe MAX1693/MAX1694 are current-limited, 60mW♦ Accurate Current Limit (0.7A min, 1.0A max)s ..
MAX1694EUB ,USB Current-Limited Switches with Fault BlankingApplicationsto go low after the 10ms blanking period. When theovercurrent condition is removed, FAU ..
MAX1694EUB+ ,USB Current-Limited Switches with Fault Blankingfeatures to ensure that the USB port is protected.PART TEMP RANGE PIN-PACKAGEBuilt-in thermal-overl ..
MAX1694EUB+T ,USB Current-Limited Switches with Fault BlankingMAX1693/(MAX1693H)/MAX169419-1518; Rev 2; 9/01USB Current-Limited Switches with Fault Blanking
MAX1697SEUT#TG16 ,60mA, SOT23 Inverting Charge Pump with ShutdownELECTRICAL CHARACTERISTICS(Circuit of Figure 1, capacitors from Table 2, V = +5V, SHDN = IN, T = 0° ..
MAX4502CPA ,Low-Voltage, SPST, CMOS Analog SwitchesApplications ________________Ordering InformationBattery-Operated EquipmentPIN- TOPPART TEMP. RANGE ..
MAX4502CUK+T ,Low-Voltage, SPST, CMOS Analog SwitchesELECTRICAL CHARACTERISTICS—+5V Supply (continued)(V+ = +4.5V to +5.5V, V = 2.4V, V = 0.8V, T = T to ..
MAX4502ESA ,Low-Voltage, SPST, CMOS Analog SwitchesGeneral Description _________
MAX4502EUK+T ,Low-Voltage, SPST, CMOS Analog SwitchesMAX4501/MAX450219-1062; Rev 1; 11/99Low-Voltage, SPST, CMOS Analog Switches_________________
MAX4504CPA ,Low-Voltage / Dual-Supply / SPST / CMOS Analog SwitchesApplications ______________Ordering InformationBattery-Operated EquipmentPART TEMP. RANGE PIN-PACKA ..
MAX4505EUK ,Fault-Protected, High-Voltage, Signal Line ProtectorELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +15V, V- = -15V, T = T to T , unless otherwise noted. ..


MAX1693EUB-MAX1694EUB
USB Current-Limited Switches with Fault Blanking
General Description
The MAX1693/MAX1694 are current-limited, 60mW
switches with built-in fault blanking. Their accurate pre-
set current limit of 0.7A to 1.0A makes them ideally suit-
ed for USB applications. Their low quiescent supply
current (14μA) and shutdown current (1μA) conserve
battery power in portable applications. The MAX1693/
MAX1694 operate with inputs from +2.7V to +5.5V,
making them ideal for both +3V and +5V systems.
A fault signal notifies the microprocessor that the inter-
nal current limit has been reached. A 10ms fault-blank-
ing feature allows momentary faults (such as those
caused when hot-swapping into a capacitive load) to
be ignored, thus preventing false alarms to the host
system. This fault blanking also prevents a fault signal
from being issued when the device is powering up.
In the MAX1693, an output overcurrent condition caus-
es the switch to current limit at 0.7A to 1.0A and FAULT
to go low after the 10ms blanking period. When the
overcurrent condition is removed, FAULTreturns to its
high-impedance state. In the MAX1694, any overcur-
rent longer than 10ms will latch the switch open and set
FAULTlow. The latch is cleared by cycling the ON
input or by powering up the device again. This feature
saves power by preventing the device from thermally
cycling on and off in case of a persistent short-circuit
condition.
The MAX1693/MAX1694 have several safety features to
ensure that the USB port is protected. Built-in thermal-
overload protection limits power dissipation and junc-
tion temperatures. Both devices have accurate internal
current-limiting circuitry to protect the input supply
against overload. They are available in space-saving
10-pin μMAX packages.
Features
Accurate Current Limit (0.7A min, 1.0A max)Guaranteed 0.75A Short-Circuit Protection10ms Internal Fault-Blanking TimeoutNo Fault Signal During Power-UpLatched FAULTOutput Turns Off Power Switch
(MAX1694)
Thermal Shutdown Protection+2.7V to +5.5V Supply Range14μA Supply CurrentSmall 10-Pin μMAX PackageUL Recognition Pending
Applications

USB Ports and Hubs
Notebook Computers
Portable Equipment
Docking Stations
Hot Plug-In Power Supplies
Battery-Charger Circuits
MAX1693/MAX1694
USB Current-Limited Switches
with Fault Blankingypical Operating Circuit

19-1518; Rev 0; 9/99
Pin Configuration
Ordering Information
MAX1693/MAX1694
USB Current-Limited Switches
with Fault Blanking
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(VIN= +5V, TA= 0°C to +85°C, unless otherwise noted. Typical values are at TA= +25°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.
IN, ON, FAULTto GND.............................................-0.3V to +6V
OUT to GND................................................-0.3V to (VIN+ 0.3V)
Maximum Continuous Switch Current.....1.2A (internally limited)
OUT Short Circuit to GND..........................................Continuous
Continuous Power Dissipation (TA= +70°C)
10-Pin μMAX (derate 5.6mW/°C above +70°C)............444mW
Operating Temperature Range
MAX1693EUB/MAX1694EUB..........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec).............................+300°C
MAX1693/MAX1694
USB Current-Limited Switches
with Fault Blanking
ELECTRICAL CHARACTERISTICS

(VIN= +5V, TA= -40°C to +85°C, unless otherwise noted.) (Note 3)
Note 1:
MAX1693’s current limit is tested by forcing VOUTto 4.5V. The MAX1694’s current limit is tested by increasing the output cur-
rent until the switch is latched off.
Note 2:
This specification applies to the MAX1693 only. The MAX1694 latches the switch off under a sustained (>10ms) short-
circuit condition.
Note 3:
Specifications to -40°C are guaranteed by design, not production tested.
MAX1693/MAX1694
USB Current-Limited Switches
with Fault Blanking
Typical Operating Characteristics

(VIN= +5V, TA= +25°C, unless otherwise noted.)
MAX1693/MAX1694
USB Current-Limited Switches
with Fault Blanking

2ms/div
MAX1693/4 toc10
MAX1693
CURRENT-LIMIT AND FAULT RESPONSE

CH1 = VIN, 200mV/div, AC-COUPLED; CH2 = VOUT,
5V/div; CH3 = VFAULT, 5V/div; CH4 = IOUT, 500mA/div
10μs/div
MAX1693
CURRENT-LIMIT RESPONSE

MAX1693/4 toc11
CH1 = VIN, 200mV/div, AC-COUPLED; CH2 = VOUT,
5V/div; CH3 = VFAULT, 5V/div; CH4 = IOUT, 1A/div
MAX1693
SWITCH TURN-ON TIME

MAX1693/4 toc13
CH1 = VOUT, 5V/div; CH2 = VON, 5V/div;
CH3 = VFAULT, 5V/div; CH4 = IOUT, 200mA/div
20μs/div
MAX1693
SWITCH TURN-OFF TIME

MAX1693/4 toc14
CH1 = VOUT, 5V/div; CH2 = VON, 5V/div;
CH3 = VFAULT, 5V/div; CH4 = IOUT, 200mA/div
1μs/div
MAX1693/4 toc15
MAX1694
OVERCURRENT TO FAULT
AND SWITCH LATCHED OFF

CH1 = VFAULT, 5V/div; CH2 = IOUT, 5V/div;
2ms/div
MAX1693
START-UP TIME
(TYPICAL USB APPLICATION)

MAX1693/4 toc16
CH1 = VOUT, 5V/div; CH2 = VON, 5V/div;
1ms/divypical Operating Characteristics (continued)
(VIN= +5V, TA= +25°C, unless otherwise noted.)
_______________Detailed Description
The MAX1693/MAX1694 P-channel MOSFET power
switches limit output current to 0.7A min to 1.0A max.
When the output current is increased beyond the cur-
rent limit (ILIMIT), the current also increases through the
replica switch (IOUT/6500). The current-limit error ampli-
fier compares the voltage to the internal 1.24V refer-
ence and regulates the current back to the ILIMIT.
These switches are not bidirectional; therefore, the
input voltage must be higher than the output voltage.
Continuous Short-Circuit Protection

The MAX1693/MAX1694 are foldback short circuit-pro-
tected switches. In the event of an output short-circuit
or current-overload condition, the current through the
switch is foldback-current limited to 500mA continuous
for the MAX1693. For the MAX1694, if the short circuit
lasts longer than 10ms, the switch is latched off.
Thermal Shutdown

The MAX1693/MAX1694 feature thermal shutdown. The
switch turns off and the FAULToutput goes low imme-
diately (no fault blanking) when the junction tempera-
ture exceeds +165°C. The MAX1694 remains latched
with the switch off and the FAULToutput low. When the
MAX1693 cools 20°C, the switch turns back on. If the
fault short-circuit condition is not removed, the switch
will cycle on and off, resulting in a pulsed output.
FAULTIndicator

The MAX1693/MAX1694 provide a fault output
(FAULT). A 100kΩpull-up resistor from FAULTto IN
provides a logic control signal. This open-drain output
goes low when any of the following conditions occur: The input voltage is below the undervoltage-lockout
(UVLO) threshold.The die temperature exceeds the thermal shutdown
temperature limit of +165°C.The device is in current limit and the 10ms fault-
blanking period is exceeded.
Fault Blanking

The MAX1693/MAX1694 feature 10ms fault blanking.
Fault blanking allows current-limit faults, including
MAX1693/MAX1694
USB Current-Limited Switches
with Fault Blanking
Pin Description
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