MAX1558ETB+-MAX1558ETB+T-MAX1558HETB+ Fast Delivery |IC PHOENIX CO.,LIMITED

MAX1558HETB+ ,Dual, 3mm x 3mm, 1.2A/Programmable-Current USB Switches with AutoresetELECTRICAL CHARACTERISTICS (continued)(V = V = 5V, V = V = 0V (MAX1558), V = V = 5V (MAX1558H), R = ..
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MAX1558ETB+-MAX1558ETB+T-MAX1558HETB+
Dual, 3mm x 3mm, 1.2A/Programmable-Current USB Switches with Autoreset
General Description
The MAX1558/MAX1558H are dual, current-limited
switches with autoreset for USB applications. Autoreset
latches the switch off if it is shorted for more than 20ms,
saving system power. The shorted output is then tested
to determine when the short is removed to automatically
restart the channel. Each channel delivers up to 1.2A
and meets all IEC specifications for USB ports. Low
quiescent supply current (45µA) and standby current
(3µA) conserve battery power in portable applications.
The MAX1558/MAX1558H safety features ensure that the
USB port is protected. Built-in thermal-overload protection
limits power dissipation and junction temperature.
Accurate, programmable current-limiting circuitry pro-
tects the input supply against both overload and short-cir-
cuit conditions. 20ms fault blanking enables the circuit to
ignore transient faults, such as those caused when hot
swapping a capacitive load, preventing false alarms to
the host system. The MAX1558/MAX1558H also feature
reverse-current protection circuitry to block current flow
from the output to the input when the switches are off.
The MAX1558/MAX1558H are available in space-sav-
ing 3mm x 3mm, 10-pin TDFN packages. The MAX1558
is enabled with an active-low signal, and the
MAX1558H is enabled with an active-high signal.
Applications
USB Ports and Hubs
Notebook Computers and Desktops
PDAs and Palmtop Computers
Docking Stations
Features55mΩSwitch ResistanceTiny 10-Pin, 3mm x 3mm TDFN Package14% Accurate Current LimitAutorestart when Fault is RemovedProgrammable Current Up to 1.2AThermal-Overload ProtectionBuilt-In 20ms Fault BlankingCompliant to All USB Specifications2.7V to 5.5V Supply RangeIndependent-Output Fault IndicatorsBlock Reverse Current when Disabled15kV ESD Protection (with Capacitor)UL Recognized: UL# E211395
MAX1558/MAX1558H
Dual, 3mm x 3mm, 1.2A/Programmable-Current
USB Switches with Autoreset
Ordering Information
19-3128; Rev 2; 3/08
PARTTEMP RANGEPIN-
PACKAGE
TOP
MARK
MAX1558ETB+-40°C to +85°C10 TDFN
(3mm x 3mm)AAR
MAX1558HETB+-40°C to +85°C10 TDFN
(3mm x 3mm)AAS
MAX1558
INPUT
2.7V TO 5.5V
INA
INB
ISET
FLTA
FLTB
ONA
ONB
ONA
ONB
OUTA
OUTB
GND
USB
PORT A
USB
PORT B
Typical Operating Circuit
TDFN3mm x 3mm
TOP VIEW
MAX1558
(MAX1558H)
ISET
INA
INB
ONA (ONA)ONB (ONB)
OUTAGNDOUTBFLTAFLTB
Pin Configuration
+Denotes a lead-free package.
MAX1558/MAX1558H
Dual, 3mm x 3mm, 1.2A/Programmable-Current
USB Switches with Autoreset
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VINA= VINB= 5V, VONA= VONB= 0V (MAX1558), VONA= VONB= 5V (MAX1558H), RISET= 26kΩto GND, TA= 0°C to +85°C,
unless otherwise noted. Typical values are at TA= +25°C.) (Note 3)
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_, OUT_, ISET, FLT_to GND........................-0.3V to +6V
IN_ to OUT_ (when disabled) (Note 1)........................-6V to +6V
IN_ to OUT_ (when enabled) (Note 2)............-1.6A to +1.6ARMS
FLT_Sink Current................................................................20mA
Continuous Power Dissipation (TA= +70°C)
10-Pin TDFN 3mm x 3mm
(derate 24.4mW/°C above +70°C).............................1952mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+160°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Supply Voltage Range2.755.50V
VIN_ = 5V, TA = +25°C5575
VIN_ = 3.3V, TA = +25°C64Switch On-ResistanceRON
VIN_ = 4.4V, TA = 0°C to +85°C105
Standby Supply CurrentBoth switches disabled36µA
Quiescent Supply CurrentBoth switches enabled4575µA
VOUTA = VOUTB = 0V0.0310OUT_ Off-Leakage CurrentSwitches disabledVOUTA = VOUTB = 5V0.03µA
Reverse Leakage CurrentVIN_ = 0V, VOUTA = VOUTB = 5V, both
switches disabled0.03µA
Undervoltage-Lockout ThresholdVUVLORising edge, 3% hysteresis2.32.52.7V
Continuous Load CurrentRISET = 26kΩ1.2A
RISET = 26kΩ1.201.41.60
RISET = 39kΩ0.800.9251.05Current-Limit ThresholdVIN_ - VOUT_ =
0.5V
RISET = 60kΩ0.500.60.70
RISET = 26kΩ1.452.02.60
RISET = 39kΩ1.40Peak Short-Circuit Current LimitISHORTVOUT_ = 0V
(IOUT_ pulsing)
RISET = 60kΩ0.90
A(PEAK)
RISET = 26kΩ0.55
RISET = 39kΩ0.37RMS Short-Circuit Current LimitISHORTVOUT_ = 0V
(IOUT_ pulsing)
RISET = 60kΩ0.23
ARMS
Short-Circuit Continuous Current-
Limit Transition Threshold(Note 4)1V
Fault-Blanking Timeout PeriodFrom ILIMIT condition to 50% of V FLT_82040ms
Turn-On DelaytON
ROUT_ = 10Ω, COUT_ = 1µF, does not
include rise time (from ON asserted to
VOUT_ = 10% VIN_)
0.51.44.0ms
Note 1:Reverse current (current from OUT_ to IN_) is blocked when disabled.
Note 2:Forward current (current from IN_ to OUT_) is internally limited. Reverse current, from OUT_ to IN_, is not limited when the
device is enabled and must be kept below 1.5ARMSto prevent permanent device damage. When the MAX1558/MAX1558H
are disabled, the switch turns off and reverse current is internally blocked.
MAX1558/MAX1558H
Dual, 3mm x 3mm, 1.2A/Programmable-Current
USB Switches with Autoreset
ELECTRICAL CHARACTERISTICS (continued)
(VINA= VINB= 5V, VONA= VONB= 0V (MAX1558), VONA= VONB= 5V (MAX1558H), RISET= 26kΩto GND, TA= 0°C to +85°C,
unless otherwise noted. Typical values are at TA= +25°C.) (Note 3)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Output Rise TimetRISECOUT_ = 1µF, ROUT_ = 10Ω, (from 10% to
90% of VOUT_)4ms
Turn-Off Delay from ONtOFF
ROUT_ = 10Ω, COUT_ = 1µF, does not
include rise time (from ON deasserted to
VOUT_ = 90% VIN_)
1001000µs
Output Fall TimetFALLCOUT_ = 1µF, ROUT_ = 10Ω (from 90% to
10% of VOUT_)3ms
Thermal-Shutdown Threshold10°C hysteresis+160°C
VIN_ = 2.7V to 4.0V1.6ONA/ONB Logic Input High
VoltageVIHVIN_ = 4.0V to 5.5V2.0V
VIN_ = 2.7V to 4.0V0.6ONA/ONB Logic Input Low
VoltageVILVIN_ = 4.0V to 5.5V0.8V
Logic Input CurrentVON_ = 0V or VIN_-1+1µA
FLT_ Output Low VoltageISINK = 1mA0.4V
FLT_ Output High Leakage
CurrentVIN_ = V FLT_ = 5.5V1µA
Autorestart CurrentIn latched-off state, VOUT_ = 0V102550mA
Autorestart ThresholdIn latched-off state, rising0.40.50.6V
Autorestart DelayIn latched-off state, VOUT_ > 1V82040ms
ELECTRICAL CHARACTERISTICS
(VINA= VINB= 5V, VONA= VONB= 0V (MAX1558), VONA= VONB= 5V (MAX1558H), RISET= 26kΩto GND, TA= -40°C to +85°C,
unless otherwise noted.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Supply Voltage Range2.75.5V
VIN_ = 5V, TA = +25°C75Switch On-ResistanceRONVIN_ = 4.4V, TA = 0°C to +85°C105mΩ
Standby Supply CurrentBoth switches disabled6µA
Quiescent Supply CurrentBoth switches enabled75µA
OUT_ Off-Leakage CurrentSwitches disabled, VOUTA = VOUTB = 0V10µA
Undervoltage-Lockout ThresholdVUVLORising edge, 3% hysteresis2.32.7V
Continuous Load CurrentRISET = 26kΩ1.2A
RISET = 26kΩ1.201.60
RISET = 39kΩ0.801.05Current-Limit ThresholdVIN_ - VOUT_ = 0.5V
RISET = 60kΩ0.500.70
Peak Short-Circuit Current LimitISHORTVOUT_ = 0V
(IOUT_ pulsing)RISET = 26kΩ1.452.60A(PEAK)
Typical Operating Characteristics
(VINA= VINB= 5V, VONA= VONB= 0V (MAX1558), VONA= VONB= 5V (MAX1558H), RISET= 26kΩto GND. Typical values are at TA=
+25°C, unless otherwise noted.)
MAX1558/MAX1558H
Dual, 3mm x 3mm, 1.2A/Programmable-Current
USB Switches with Autoreset
ELECTRICAL CHARACTERISTICS (continued)
(VINA= VINB= 5V, VONA= VONB= 0V (MAX1558), VONA= VONB= 5V (MAX1558H), RISET= 26kΩto GND, TA= -40°C to +85°C,
unless otherwise noted.)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Turn-On DelaytON
ROUT_ = 10Ω, COUT_ = 1µF, does not
include rise time (from ON asserted to
VOUT_ = 10% VIN_)
0.54.0ms
Turn-Off Delay from ONtOFF
ROUT_ = 10Ω, COUT_ = 1µF, does not
include rise time (from ON deasserted to
VOUT_ = 90% VIN_)
1000µs
VIN_ = 2.7V to 4.0V1.6ONA/ONB Logic Input High
VoltageVIHVIN_ = 4.0V to 5.5V2.0V
VIN_ = 2.7V to 4.0V0.6ONA/ONB Logic Input Low
VoltageVILVIN_ = 4.0V to 5.5V0.8V
Logic Input CurrentVON_ = 0V or VIN_-1+1µA
FLT_ Output Low VoltageISINK = 1mA0.4V
FLT_ Output High Leakage
CurrentVIN_ = V FLT_ = 5.5V1µA
Autorestart CurrentIn latched-off state, VOUT_ = 0V1050mA
Autorestart ThresholdIn latched-off state, rising0.40.6V
Autorestart DelayIn latched-off state, VOUT_ > 1V840ms
Note 3:Specifications from 0°C to -40°C are guaranteed by design but not 100% tested.
Note 4:The output voltage at which the device transitions from short-circuit current limit to continuous current limit. See the Output-
Current Fault Protectionsection.
CURRENT-LIMIT PROGRAM vs. RISET
MAX1558/58H toc01
CURRENT LIMIT (A)48525644283632
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX1558/58H toc02
QUIESCENT CURRENT (4321
QUIESCENT CURRENT vs. TEMPERATURE
MAX1558/58H toc03
TEMPERATURE (°C)
QUIESCENT CURRENT (3510-15
VIN_ = 5.5V
VIN_ = 4.5V
VIN_ = 5V
MAX1558/MAX1558H
Dual, 3mm x 3mm, 1.2A/Programmable-Current
USB Switches with Autoreset
SHUTDOWN CURRENT vs. TEMPERATURE
MAX1558/58H toc04
TEMPERATURE (°C)
SHUTDOWN CURRENT (35-1510
ON_ = VIN_ (MAX1558)
ON_ = GND (MAX1558H)
SWITCH OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX1558/58H toc05
TEMPERATURE (°C)
SWITCH OFF-LEAKAGE CURRENT (nA)35-1510
ON_ = IN_ (MAX1558)
ON_ = GND
(MAX1558H)
OFF REVERSE-BLOCKING LEAKAGE
CURRENT vs. OUTPUT VOLTAGE
MAX1558/58H toc06
OUTPUT VOLTAGE (V)
OFF REVERSE-BLOCKING LEAKAGE CURRRENT (nA)4321
NORMALIZED ON-RESISTANCE
vs. TEMPERATURE
MAX1558/58H toc07
TEMPERATURE (°C)
NORMALIZED R3510-15
CONTINUOUS CURRENT-LIMIT THRESHOLD
vs. TEMPERATURE
MAX1558/58H toc08
TEMPERATURE (°C)
CONTINUOUS CURRENT-LIMIT THRESHOLD (A)3510-15
TURN-ON TIME
vs. TEMPERATURE (tON + tRISE)
MAX1558/58H toc09
TEMPERATURE (°C)
TURN-ON TIME (ms)3510-15
VIN_ = 4.5V
VIN_ = 5.5VVIN_ = 5V
TURN-OFF TIME
vs. TEMPERATURE (tOFF + tFALL)
MAX1558/58H toc10
TURN-OFF TIME (ms)3510-15
VIN_ = 4.5V
VIN_ = 5.5V
VIN_ = 5V
MAX1558/58H toc115035205-10-25
VIN_ = 4.5V
VIN_ = 5.5V
VIN_ = 5V
FAULT-BLANKING TIME (ms)
FAULT-BLANKING TIME
vs. TEMPERATURE
MAX1558/58H toc123510-15
VIN_ = 4.5V
VIN_ = 5.5V
VIN_ = 5V
FAULT OUTPUT LOW VOLTAGE (mV)
FAULT OUTPUT LOW VOLTAGE
vs. TEMPERATURE
Typical Operating Characteristics (continued)
(VINA= VINB= 5V, VONA= VONB= 0V (MAX1558), VONA= VONB= 5V (MAX1558H), RISET= 26kΩto GND. Typical values are at TA=
+25°C, unless otherwise noted.)
MAX1558/MAX1558H
Dual, 3mm x 3mm, 1.2A/Programmable-Current
USB Switches with Autoreset
MAX1558/58H toc13
TEMPERATURE (°C)3510-15
VIN_ = 4.5V
VIN_ = 5.5V
VIN_ = 5V
AUTORESET CURRENT (mA)
AUTORESET CURRENT
vs. TEMPERATURE
AUTORESET CURRENT
vs. INPUT VOLTAGE
MAX1558/58H toc14
VIN (V)
AUTORESET CURRENT (mA)
TA = +85°C
TA = -40°C
TA = +25°C
OVERLOAD RESPONSE INTO 2.5Ω
MAX1558/58H toc15
20ms/div
IOUT_
OUT_
VIN
FLT_
5V/div
5V/div
1A/div
SHORT-CIRCUIT RESPONSE INTO 0Ω
MAX1558/58H toc16
20ms/div
IOUT_
VIN
VOUT
FLTA_
5V/div
5V/div
5V/div
5A/div
SHORT
APPLIED
SHORT
REMOVED
SWITCH ON
AUTORESTART
Typical Operating Characteristics (continued)
(VINA= VINB= 5V, VONA= VONB= 0V (MAX1558), VONA= VONB= 5V (MAX1558H), RISET= 26kΩto GND. Typical values are at TA=
+25°C, unless otherwise noted.)
SWITCH TURN-ON TIME
MAX1558/58H toc17
2.0ms/div
ON_
OUT_
2V/div
2V/div
SWITCH TURN-OFF TIME
MAX1558/58H toc18
1.0ms/div
ON_
OUT_
2V/div
2V/div
Detailed Description
The MAX1558/MAX1558H are dual current-limited
switches designed for USB applications. They have two
independent switches, each with its own enable control
input and autoreset function. Each switch has an error-
flag output to notify the USB controller when current-
limit, short-circuit, undervoltage-lockout, or thermal-
shutdown conditions occur (Figure 2). The MAX1558/
MAX1558H operate from a 2.7V to 5.5V supply. Each
output can supply up to 1.2A. Current limit for both
channels is set with one external resistor.
The MAX1558/MAX1558H have independent thermal
shutdown for each switch in the event of a prolonged
overload. An autoreset function monitors the output and
automatically turns the switch on when the overload is
removed. Separate current limiting and thermal-shut-
down circuits permit each switch to operate indepen-
dently, improving system robustness.
MAX1558/MAX1558H
PINNAMEFUNCTIONINAPower Input for OUTA. Connect INA and INB together and bypass with a 0.1µF capacitor to ground.
Load conditions may require additional bulk capacitance to prevent the input from being pulled down.ONA
*(ONA)
Control Input for Switch A. Can be driven higher than IN_ without damage. A logic low turns switch A on
for the MAX1558. A logic high turns switch A on for the MAX1558H.ISETCurrent-Limit Adjust for Both Channels. Connect a resistor between 26kΩ to 60kΩ from ISET to ground to
program the current limit. See Setting the Current Limit in the Applications Information section.ONB
*(ONB)
Control Input for Switch B. Can be driven higher than IN_ without damage. A logic low turns switch B on
for the MAX1558. A logic high turns switch B on for the MAX1558H.INBPower Input for OUTB. Connect INB and INA together and bypass with a 0.1µF capacitor to ground.
Load conditions may require additional bulk capacitance to prevent the input from being pulled down.OUTBPower Output for Switch B. Connect a 1µF capacitor from OUTB to ground. The load condition may
require additional bulk capacitance.FLTBFault Indicator Output for Switch B. This open-drain output goes low when switch B is in thermal
shutdown or UVLO or in a sustained (>20ms) current-limit or short-circuit condition.GNDGroundFLTAFault Indicator Output for Switch A. This open-drain output goes low when switch A is in thermal
shutdown or UVLO or in a sustained (>20ms) current-limit or short-circuit condition.OUTA
Power Output for Switch A. Connect a 1µF capacitor from OUTA to ground. The load condition may
require additional bulk capacitance.PAD
Exposed Pad, Internally Connected to GND. Connect exposed pad to a large copper trace for maximum
power dissipation.
Pin Description
Dual, 3mm x 3mm, 1.2A/Programmable-Current
USB Switches with Autoreset
*( ) are for the MAX1558H only.
MAX1558
INPUT
2.7V TO 5.5V
INA
INB
ISET
FLTA
FLTB
ONA
ONB
ONA
ONB
OUTA
OUTB
GND
USB
PORT A
USB
PORT B
0.1μF
100kΩ
100kΩ
1μF*
1μF*
*USB APPLICATIONS MAY REQUIRE ADDITIONAL
BULK CAPACITANCE
Figure 1. Typical Application Circuit

Partno	Mfg	Dc	Qty	Available	Descript
MAX1558ETB+	MAXIM	N/a	1152	avai	Dual, 3mm x 3mm, 1.2A/Programmable-Current USB Switches with Autoreset
MAX1558ETB+T	N/A	N/a	2500	avai	Dual, 3mm x 3mm, 1.2A/Programmable-Current USB Switches with Autoreset
MAX1558HETB+	MAXIM	N/a	39000	avai	Dual, 3mm x 3mm, 1.2A/Programmable-Current USB Switches with Autoreset