MAXIM MAX1558, MAX1558H User Manual

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.

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 pro­tects the input supply against both overload and short-cir­cuit 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-sav­ing 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

Features

♦ 55mΩ Switch Resistance

♦ Tiny 10-Pin, 3mm x 3mm TDFN Package

♦ 14% Accurate Current Limit

♦ Autorestart when Fault is Removed

♦ Programmable Current Up to 1.2A

♦ Thermal-Overload Protection

♦ Built-In 20ms Fault Blanking

♦ Compliant to All USB Specifications

♦ 2.7V to 5.5V Supply Range

♦ Independent-Output Fault Indicators

♦ Block Reverse Current when Disabled

♦ 15kV ESD Protection (with Capacitor)

♦ UL Recognized: UL# E211395

MAX1558/MAX1558H

Dual, 3mm x 3mm, 1.2A/Programmable-Current

USB Switches with Autoreset

________________________________________________________________

Maxim Integrated Products

1

Ordering Information

19-3128; Rev 2; 3/08

Typical Operating Circuit

Pin Configuration

+

Denotes a lead-free package.

PART TEMP RANGE

MAX1558ETB+ -40°C to +85°C

MAX1558HETB+ -40°C to +85°C

PIN­PACKAGE

10 TDFN
(3mm x 3mm)

10 TDFN
(3mm x 3mm)

TOP

MARK

AAR

AAS

TOP VIEW

OUTA

10

+

1

INA

GND

FLTA

98

MAX1558

(MAX1558H)

23

3mm x 3mm

76

45

ISET

ONA (ONA)

TDFN

OUTB

FLTB

INB

ONB (ONB)

INPUT

2.7V TO 5.5V

INA

INB

MAX1558

FLTA

FLTB

ISET

ONA

ONB

OUTA

OUTB

GND

ONA

ONB

USB
PORT A

USB
PORT B

MAX1558/MAX1558H

Dual, 3mm x 3mm, 1.2A/Programmable-Current
USB Switches with Autoreset

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(V

INA

= V

INB

= 5V, V

ONA

= V

ONB

= 0V (MAX1558), V

ONA

= V

ONB

= 5V (MAX1558H), R

ISET

= 26kΩ to GND, TA= 0°C to +85°C,

unless otherwise noted. Typical values are at T

A

= +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 +1.6A

RMS

FLT_ Sink Current................................................................20mA

Continuous Power Dissipation (T

A

= +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

(

)

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 1.5A

RMS

to prevent permanent device damage. When the MAX1558/MAX1558H

are disabled, the switch turns off and reverse current is internally blocked.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage Range 2.75 5.50 V

Standby Supply Current Both switches disabled 3 6 µA

Quiescent Supply Current Both switches enabled 45 75 µA

OUT_ Off-Leakage Current Switches disabled

Reverse Leakage Current

Undervoltage-Lockout Threshold V

Continuous Load Current R

RMS Short-Circuit Current Limit I

Short-Circuit Continuous Current­Limit Transition Threshold

Fault-Blanking Timeout Period From I

Turn-On Delay t

SHORT

SHORT

V

ON

V

V

V
switches disabled

UVLO

Rising edge, 3% hysteresis 2.3 2.5 2.7 V

V

0.5V

V
(I

V
(I

(Note 4) 1 V

R

ON

include rise time (from ON asserted to
V

= 5V, TA = +25°C5575

IN_

= 3.3V, TA = +25°C64Switch On-Resistance R

IN_

= 4.4V, TA = 0°C to +85°C 105

IN_

= 0V, V

IN_

= 26kΩ 1.2 A

ISET

- V

IN_

= 0V

OUT_

pulsing)

OUT_

= 0V

OUT_

pulsing)

OUT_

LIMIT

= 10Ω, C

OUT_

= 10% V

OUT_

V

OUTA

V

OUTA

= V

OUT_

OUTA

=

OUTB

R

ISET

R

ISET

R

ISET

R

ISET

R

ISET

R

ISET

R

ISET

R

ISET

R

ISET

condition to 50% of V

= 1µF, does not

OUT_

)

IN_

= V

= V

= 0V 0.03 10

OUTB

= 5V 0.03

OUTB

= 5V, both

= 26kΩ 1.20 1.4 1.60

= 39kΩ 0.80 0.925 1.05Current-Limit Threshold

= 60kΩ 0.50 0.6 0.70

= 26kΩ 1.45 2.0 2.60

= 39kΩ 1.40Peak Short-Circuit Current Limit I

= 60kΩ 0.90

= 26kΩ 0.55

= 39kΩ 0.37

= 60kΩ 0.23

FLT_

0.03 µA

82040ms

0.5 1.4 4.0 ms

A

mΩ

µA

PEAK

A

RMS

A

MAX1558/MAX1558H

Dual, 3mm x 3mm, 1.2A/Programmable-Current

USB Switches with Autoreset

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(V

INA

= V

INB

= 5V, V

ONA

= V

ONB

= 0V (MAX1558), V

ONA

= V

ONB

= 5V (MAX1558H), R

ISET

= 26kΩ to GND, TA= 0°C to +85°C,

unless otherwise noted. Typical values are at T

A

= +25°C.) (Note 3)

ELECTRICAL CHARACTERISTICS

(V

INA

= V

INB

= 5V, V

ONA

= V

ONB

= 0V (MAX1558), V

ONA

= V

ONB

= 5V (MAX1558H), R

ISET

= 26kΩ to GND, TA= -40°C to +85°C,

unless otherwise noted.)

(

)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Rise Time t

Turn-Off Delay from ON t

Output Fall Time t

Thermal-Shutdown Threshold 10°C hysteresis +160 °C

ONA/ONB Logic Input High
Voltage

ONA/ONB Logic Input Low
Voltage

Logic Input Current V

FLT_ Output Low Voltage I

FLT_ Output High Leakage

Current

Autorestart Current In latched-off state, V

Autorestart Threshold In latched-off state, rising 0.4 0.5 0.6 V

Autorestart Delay In latched-off state, V

RISE

C
90% of V

R

OFF

include rise time (from ON deasserted to
V

FALL

V

V

C
10% of V

V

IH

V

V

IL

V

V

OUT_

OUT_

= 1µF, R

= 10Ω, C

= 10Ω, (from 10% to

OUT_

)

OUT_

= 1µF, does not

OUT_

4ms

100 1000 µs

= 90% V

OUT_

= 1µF, R

OUT_

OUT_

= 2.7V to 4.0V 1.6

IN_

= 4.0V to 5.5V 2.0

IN_

= 2.7V to 4.0V 0.6

IN_

= 4.0V to 5.5V 0.8

IN_

= 0V or V

ON_

= 1mA 0.4 V

SINK

= V

IN_

FLT_

)

IN_

= 10Ω (from 90% to

)

OUT_

IN_

-1 +1 µA

3ms

= 5.5V 1 µA

= 0V 10 25 50 mA

OUT_

> 1V 8 20 40 ms

OUT_

V

V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage Range 2.7 5.5 V

Switch On-Resistance R

Standby Supply Current Both switches disabled 6 µA

Quiescent Supply Current Both switches enabled 75 µA

OUT_ Off-Leakage Current Switches disabled, V

Undervoltage-Lockout Threshold V

Continuous Load Current R

Current-Limit Threshold V

Peak Short-Circuit Current Limit I

Fault-Blanking Timeout Period From I

SHORT

ON

UVLO

V

= 5V, TA = +25°C75

IN_

V

= 4.4V, TA = 0°C to +85°C 105

IN_

OUTA

= V

= 0V 10 µA

OUTB

Rising edge, 3% hysteresis 2.3 2.7 V

= 26kΩ 1.2 A

ISET

R

= 26kΩ 1.20 1.60

ISET

V
(I

IN_

OUT_

OUT_

- V

= 0.5V

OUT_

= 0V
pulsing)

condition to 50% of V

LIMIT

R

= 39kΩ 0.80 1.05

ISET

= 60kΩ 0.50 0.70

R

ISET

R

= 26kΩ 1.45 2.60 A

ISET

FLT_

840ms

mΩ

A

PEAK

Typical Operating Characteristics

(V

INA

= V

INB

= 5V, V

ONA

= V

ONB

= 0V (MAX1558), V

ONA

= V

ONB

= 5V (MAX1558H), R

ISET

= 26kΩ to 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

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(V

INA

= V

INB

= 5V, V

ONA

= V

ONB

= 0V (MAX1558), V

ONA

= V

ONB

= 5V (MAX1558H), R

ISET

= 26kΩ to GND, TA= -40°C to +85°C,

unless otherwise noted.)

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 Protection

section.

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Turn-On Delay t

Turn-Off Delay from ON t

ONA/ONB Logic Input High
Voltage

ONA/ONB Logic Input Low
Voltage

Logic Input Current V

FLT_ Output Low Voltage I
FLT_ Output High Leakage

Current

Autorestart Current In latched-off state, V

Autorestart Threshold In latched-off state, rising 0.4 0.6 V

Autorestart Delay In latched-off state, V

ON

OFF

V

V

R

OUT_

= 10Ω, C

= 1µF, does not

OUT_

include rise time (from ON asserted to
V

R

OUT_

OUT_

= 10% V

= 10Ω, C

)

IN_

= 1µF, does not

OUT_

include rise time (from ON deasserted to
V

= 90% V

OUT_

V

= 2.7V to 4.0V 1.6

IH

IL

IN_

V

= 4.0V to 5.5V 2.0

IN_

V

= 2.7V to 4.0V 0.6

IN_

V

= 4.0V to 5.5V 0.8

IN_

= 0V or V

ON_

= 1mA 0.4 V

SINK

V

= V

IN_

FLT_

)

IN_

IN_

= 5.5V 1 µA

OUT_

OUT_

0.5 4.0 ms

1000 µs

-1 +1 µA

= 0V 10 50 mA

> 1V 8 40 ms

V

V

CURRENT-LIMIT PROGRAM vs. R

1.6

1.5

1.4

1.3

1.2

1.1

1.0

0.9

CURRENT LIMIT (A)

0.8

0.7

0.6

0.5
24 60

R

40 48 52 564428 3632

ISET

(kΩ)

ISET

MAX1558/58H toc01

QUIESCENT CURRENT (μA)

QUIESCENT SUPPLY CURRENT

vs. SUPPLY VOLTAGE

60

50

40

30

20

10

0

06

SUPPLY VOLTAGE (V)

54321

QUIESCENT CURRENT vs. TEMPERATURE

50

V

= 5.5V

IN_

45

MAX1558/58H toc02

40

V

IN_

QUIESCENT CURRENT (μA)

35

30

-40 85
TEMPERATURE (°C)

V

= 4.5V

= 5V

IN_

603510-15

MAX1558/58H toc03

MAX1558/MAX1558H

Dual, 3mm x 3mm, 1.2A/Programmable-Current

USB Switches with Autoreset

_______________________________________________________________________________________

5

Typical Operating Characteristics (continued)

(V

INA

= V

INB

= 5V, V

ONA

= V

ONB

= 0V (MAX1558), V

ONA

= V

ONB

= 5V (MAX1558H), R

ISET

= 26kΩ to GND. Typical values are at TA=

+25°C, unless otherwise noted.)

SHUTDOWN CURRENT vs. TEMPERATURE

4.0
ON_ = V

(MAX1558)

IN_

ON_ = GND (MAX1558H)

3.5

3.0

2.5

2.0

1.5

SHUTDOWN CURRENT (μA)

1.0

0.5

0

-40 85
TEMPERATURE (°C)

NORMALIZED ON-RESISTANCE

vs. TEMPERATURE

1.50

1.25

(Ω)

ON

1.00

NORMALIZED R

0.75

0.50

-40 85
TEMPERATURE (°C)

1000

MAX1558/58H toc04

SWITCH OFF-LEAKAGE CURRENT (nA)

6035-15 10

603510-15

0.01

1.45

1.44

1.43

MAX1558/58H toc07

1.42

1.41

1.40

1.39

1.38

1.37

1.36

CONTINUOUS CURRENT-LIMIT THRESHOLD (A)

1.35

SWITCH OFF-LEAKAGE CURRENT

vs. TEMPERATURE

ON_ = IN_ (MAX1558)
ON_ = GND
(MAX1558H)

100

10

1

0.1

-40 85
TEMPERATURE (°C)

6035-15 10

CONTINUOUS CURRENT-LIMIT THRESHOLD

vs. TEMPERATURE

-40 85
TEMPERATURE (°C)

603510-15

OFF REVERSE-BLOCKING LEAKAGE

CURRENT vs. OUTPUT VOLTAGE

100

MAX1558/58H toc05

10

1

OFF REVERSE-BLOCKING LEAKAGE CURRRENT (nA)

0.1
06

OUTPUT VOLTAGE (V)

TURN-ON TIME

MAX1558/58H toc08

TURN-ON TIME (ms)

vs. TEMPERATURE (t

8

7

V

= 4.5V

IN_

6

5

V

= 5V

IN_

4

3

-40 85
TEMPERATURE (°C)

ON

V

= 5.5V

IN_

+ t

RISE

603510-15

MAX1558/58H toc06

54321

)

MAX1558/58H toc09

TURN-OFF TIME

vs. TEMPERATURE (t

4.00

3.75

3.50

3.25

3.00

2.75

TURN-OFF TIME (ms)

2.50

2.25

2.00

-40 85

V

IN_

V

= 4.5V

IN_

= 5.5V

TEMPERATURE (°C)

OFF

V

= 5V

IN_

+ t

FALL

603510-15

)

25

MAX1558/58H toc10

24

23

22

FAULT-BLANKING TIME (ms)

21

20

FAULT-BLANKING TIME

vs. TEMPERATURE

V

= 4.5V

IN_

V

= 5V

IN_

V

= 5.5V

IN_

-40 80
TEMPERATURE (°C)

655035205-10-25

FAULT OUTPUT LOW VOLTAGE

275

250

MAX1558/58H toc11

225

200

175

150

FAULT OUTPUT LOW VOLTAGE (mV)

125

100

V

IN_

-40 85

vs. TEMPERATURE

= 4.5V

V

= 5.5V

IN_

TEMPERATURE (°C)

MAX1558/58H toc12

V

= 5V

IN_

603510-15