MAXIM MAX8586 Technical data

General Description

The MAX8586 single current-limited switch controls up to

1.2A to power USB applications and has multiple protec­tion features including thermal shutdown, internal current
limiting, and reverse current protection. The thermal shut­down limits junction temperature during a prolonged
short or overload condition. The internal current-limiting
circuitry protects the input supply against overload and
is programmable using an external resistor. The
MAX8586 meets all IEC specifications for USB ports.

The IC latches off when the output experiences a short
circuit for more than 20ms, saving system power. Auto­restart tests the shorted output with a 25mA current to
determine if the short still exists. Once the short is
removed, the MAX8586 automatically restarts the out­put. An open-drain fault signal notifies the system that
the internal current limit has been reached. A 20ms
fault-blanking feature allows the circuit to ignore
momentary faults such as those caused when hot­swapping into a capacitive load. An ENRESET input is
available to disable the auto-restart function.

The MAX8586 features a SEL input that programs ON
to be either active high or active low. The IC is supplied
in a space-saving, 8-pin, 3mm x 3mm TDFN package.

Applications

USB Ports/Hubs

Desktop/Notebook Computers

PDAs and Palmtop Computers

Docking Stations

Features

o Reverse Current Protection

o Programmable Current Limit Up to 1.2A

o Accurate Current Limit

o Selectable Auto-Restart when Fault Is Removed

o Thermal-Overload Protection

o Selectable Active-High/Low ON Input

o Built-In 20ms Fault Blanking

o Compliant with All USB Specifications

o 2.75V to 5.5V Input Supply Range
o FAULT Indicator Output

o 15kV ESD Protection (with Caps)

o Tiny 8-Pin 3mm x 3mm TDFN Package

MAX8586

Single 1.2A USB Switch in

3mm x 3mm TDFN

________________________________________________________________

Maxim Integrated Products

1

Pin Configuration appears at end of data sheet.

Ordering Information

19-3449; Rev 2; 1/10

EVALUATION KIT

AVAILABLE

Typical Operating Circuit

/V denotes an automotive qualified part.

+

Denotes a lead(Pb)-free/RoHS-compliant package.

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.

PART TEMP RANGE

MAX8586ETA -40°C to +85°C

MAX8586ETA/V+ -40°C to +85°C

PIN-

PACKAGE

8 TDFN

3mm x 3mm

(T833-2)

8 TDFN

3mm x 3mm

(T833-2)

TOP

MARK

AMH

BLU

INPUT SUPPLY

2.75V TO 5.5V

OUTPUT

FAULT

INDICATOR

ON/OFF

POLARITY

SELECTION

ON/OFF

CONTROL

IN OUT

MAX8586

FAULT

SEL

ON

ENRESET

ISET

GND

OUTPUT SUPPLY

UP TO 1.2A

AUTO-RESTART

ON/OFF

MAX8586

Single 1.2A USB Switch in
3mm x 3mm TDFN

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN= VON= V

SEL

= V

ENRESET

= 5V, R

ISET

= 26kΩ to GND, R

FAULT

= 100kΩ pullup to VIN, C

OUT

= 0.1µF, TA= -40°C to +85°C.

Typical values are at T

A

= +25°C, unless otherwise specified.) (Note 1)

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, SEL, OUT, FAULT, ISET, ENRESET to GND ..-0.3V to +6V

IN to OUT.....................................................................-6V to +6V

FAULT Sink Current ............................................................20mA

Continuous Power Dissipation

8-Pin 3mm x 3mm TDFN

(derate 24mW/°C above +70°C)................................1951mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Soldering Temperature (reflow) .......................................+260°C

Supply Voltage Range 2.75 5.50 V

IN Standby Supply Current VON = 0V 3 6 µA

IN Quiescent Supply Current I

OUT Off-Leakage Current VON = 0V, V

Undervoltage-Lockout Threshold Rising edge, 3% hysteresis (typ) 2.3 2.5 2.7 V

RMS Short-Circuit Current Limit

Short-Circuit/Continuous Current Limit
Transition Threshold

Fault-Blanking Timeout Period From current-limit condition to FAULT falling 8 20 40 ms

PARAMETER CONDITIONS MIN TYP MAX UNITS

VIN = 5V 55

VIN = 3V 65Switch On-Resistance

V

IN

OUT

R

ISET

R

ISET

R

ISET

V

OUT

(I

OUT

V

OUT

(I

OUT

(Note 2) 1 V

= 4.4V 95

= 0A 30 55 µA

= 26kΩ 1.2 1.4 1.6

= 39kΩ 0.800 0.925 1.050Current-Limit Threshold

= 60kΩ 0.5 0.6 0.7

= 0V,
pulsing)

= 0V,
pulsing)

OUT

= 0V

TA = +25°C 0.02 1

= +85°C 0.6

T

A

R

ISET

R

ISET

R

ISET

R

ISET

R

ISET

R

ISET

= 26kΩ 1.35 1.75 2.20

= 39kΩ 1.2Peak Short-Circuit Current Limit

= 60kΩ 0.74

= 26kΩ 0.55

= 39kΩ 0.37

= 60kΩ 0.23

mΩ

µA

A

A (Peak)

A (RMS)

MAX8586

Single 1.2A USB Switch in

3mm x 3mm TDFN

_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

(VIN= VON= V

SEL

= V

ENRESET

= 5V, R

ISET

= 26kΩ to GND, R

FAULT

= 100kΩ pullup to VIN, C

OUT

= 0.1µF, TA= -40°C to +85°C.

Typical values are at T

A

= +25°C, unless otherwise specified.) (Note 1)

Note 1: All devices are 100% production tested at T

A

= +25°C. Limits over the operating temperature range are guaranteed by

design.

Note 2: The output voltage at which the device transitions from short-circuit current limit to continuous current limit.

Turn-On Delay

Output Rise Time

Turn-Off Delay from ON

Output Fall Time

Thermal-Shutdown Threshold 15°C hysteresis (typ) +160 °C

ON, SEL, ENRESET Logic Input High Voltage

ON, SEL, ENRESET Logic Input Low Voltage

Logic Input Current TA = +25°C-1+1µA

FAULT Output Low Voltage I
FAULT Output High Leakage Current VIN = 5.5V, TA = +25°C1µA

ISET Current-Limit Trip Point R

ISET External Resistance Range 26 60 kΩ

Auto-Restart Current In latched-off state, V

Auto-Restart Threshold In latched-off state, V

Auto-Restart Delay In latched-off state, V

PARAMETER CONDITIONS MIN TYP MAX UNITS

R

OUT

ON rising to 10% of V
rise time

R

OUT

10% to 90% of V

R

OUT

ON falling to 90% of V

R

OUT

90% to 10% of V

VIN = 2.75V to 4.0V 1.6

V

IN

VIN = 2.75V to 4.0V 0.6

V

IN

SINK

ISET

= 10Ω, C

= 10Ω, C

= 10Ω, C

= 10Ω, C

= 4.0V to 5.5V 2.0

= 4.0V to 5.5V 0.8

= 1mA 0.4 V

= 26kΩ 600 mV

= 1µF, measured from

OUT

OUT

OUT

OUT

OUT

OUT

, does not include

OUT

= 1µF, measured from

= 1µF measured from

OUT

= 1µF, measured from

= 0V 10 25 60 mA

OUT

rising 0.4 0.5 0.6 V

OUT

>1V 8 20 40 ms

OUT

0.5 1.5 4.0 ms

5.5 ms

100 1000 µs

4ms

V

V

MAX8586

Single 1.2A USB Switch in
3mm x 3mm TDFN

4 _______________________________________________________________________________________

Typical Operating Characteristics

(Typical Application Circuit, VIN= VON= V

SEL

= V

ENRESET

= 5V, TA= +25°C, unless otherwise noted.)

QUIESCENT SUPPLY CURRENT

vs. SUPPLY VOLTAGE

40

35

30

25

20

15

SUPPLY CURRENT (µA)

10

5

0

06

SUPPLY VOLTAGE (V)

541 2 3

MAX8586 toc01

SHUTDOWN SUPPLY CURRENT

vs. SUPPLY VOLTAGE

10

9

8

7

6

5

4

3

SUPPLY CURRRENT (µA)

2

1

0

06

SUPPLY VOLTAGE (V)

SWITCH LEAKAGE CURRENT

vs. TEMPERATURE

VON = 0V

603510-15

TEMPERATURE (°C)

VON = 0V

0.50

0.45

MAX8586 toc02

0.40

0.35

0.30

0.25

0.20

0.15

LEAKAGE CURRENT (µA)

0.10

0.05

0

54321

-40 85

MAX8586 toc03

NORMALIZED ON-RESISTANCE

vs. TEMPERATURE

1.50

1.25

ON

1.00

NORMALIZED R

0.75

0.50

-40 85
TEMPERATURE (°C)

CURRENT LIMIT

vs. INPUT VOLTAGE

2.0

1.9

1.8

1.7

1.6

1.5

1.4

CURRENT LIMIT (A)

1.3

1.2

1.1

1.0

2.7 5.5
INPUT VOLTAGE (V)

V

ENRESET

4.13.4

CONTINUOUS CURRENT LIMIT

vs. TEMPERATURE

MAX8586 toc05

CURRENT LIMIT (A)

1.50

1.48

1.46

1.44

1.42

1.40

1.38

1.36

1.34

1.32

1.30

-40 85

1.60

1.58

MAX8586 toc04

1.56

1.54

1.52

1.50

1.48

CURRENT LIMIT (A)

1.46

1.44

V

= 0V

1.42

603510-15

1.40

-40 85
TEMPERATURE (°C)

ENRESET

603510-15

SWITCH ON-TIME

vs. TEMPERATURE

9.0

8.5

MAX8586 toc07

8.0

7.5

7.0

6.5

6.0

ON-TIME (ms)

5.5

= 5V

4.8

5.0

4.5

4.0

R

= 5Ω

LOAD

NO LOAD

MEASURED FROM ON HIGH UNTIL

REACHES 90% OF THE INPUT

V

OUT

-40 85
TEMPERATURE (°C)

603510-15

10

9

MAX8586 toc08

8

7

6

5

4

3

OUTPUT FALL TIME (ms)

2

1

0

MEASURED FROM ON LOW UNTIL
V

-40 85

CURRENT LIMIT

vs. TEMPERATURE

TEMPERATURE (°C)

SWITCH OFF-TIME
vs. TEMPERATURE

FALLS TO 10% OF THE INPUT

OUT

TEMPERATURE (°C)

V

ENRESET

R

LOAD

603510-15

603510-15

= 5V

= 5Ω

MAX8586 toc06

MAX8586 toc09

MAX8586

Typical Operating Characteristics (continued)

(Typical Application Circuit, VIN= VON= V

SEL

= V

ENRESET

= 5V, TA= +25°C, unless otherwise noted.)

Single 1.2A USB Switch in

3mm x 3mm TDFN

_______________________________________________________________________________________

5

FAULT-BLANKING TIME

vs. TEMPERATURE

35

33

31

29

27

25

23

21

FAULT-BLAMKING TIME (ms)

19

17

15

-40 85
TEMPERATURE (°C)

603510-15

OVERLOAD RESPONSE INTO 2Ω

FAULT

I

IN

28

27

MAX8586 toc10

26

25

24

23

22

AUTO-RESTART CURRENT (mA)

21

20

MAX8586 toc13

AUTO-RESTART CURRENT

vs. TEMPERATURE

MAX8586 toc11

603510-15-40 85

TEMPERATURE (°C)

OVERLOAD RESPONSE INTO SHORT CIRCUIT

5V/div

2A/div

FAULT

I

IN

AUTO-RESTART CURRENT

vs. INPUT VOLTAGE

40

35

30

25

20

AUTO-RESTART CURRENT (mA)

15

R

10

2.7 5.5
INPUT VOLTAGE (V)

MAX8586 toc14

LOAD

5V/div

2A/div

= 0.5

4.84.13.4

MAX8586 toc12

Ω

I

OUT

V

OUT

V

OUT

V

ON

FAULT REMOVED

10ms/div

SWITCH TURN-ON WAVEFORM INTO NO LOAD

1ms/div

MAX8586 toc15

2A/div

5V/div

2V/div

2V/div

I

OUT

V

OUT

SWITCH TURN-ON WAVEFORM INTO 5Ω LOAD

V

OUT

V

ON

FAULT REMOVED

10ms/div

MAX8586 toc16

1ms/div

2A/div

5V/div

2V/div

2V/div

MAX8586

Single 1.2A USB Switch in
3mm x 3mm TDFN

6 _______________________________________________________________________________________

Typical Operating Characteristics (continued)

(Typical Application Circuit, VIN= VON= V

SEL

= V

ENRESET

= 5V, TA= +25°C, unless otherwise noted.)

SWITCH TURN-OFF WAVEFORM INTO 5Ω LOAD

V

OUT

V

FAULT

VIN

AC-COUPLED

I

OUT

V

OUT

ON

1ms/div

STARTUP INTO 470µF

2ms/div

MAX8586 toc17

MAX8586 toc19

2V/div

2V/div

5V/div

50mV/div

500mA/div

2V/div

FAULT

AC-COUPLED

I

OUT

V

OUT

FAULT

V

OUT

STARTUP INTO 10µF

VIN

2ms/div

UVLO RESPONSE WITH 50Ω LOAD

V

IN

4ms/div

MAX8586 toc18

5V/div

50mV/div

20mA/div

2A/div

MAX8586 toc20

5V/div

2V/div

2V/div

MAX8586

Single 1.2A USB Switch in

3mm x 3mm TDFN

_______________________________________________________________________________________ 7

Pin Description

Functional Diagram

PIN NAME FUNCTION

1 SEL

2 ISET

3ON

4IN

5 OUT

6 FAULT

ON Polarity Selector Input. Drive SEL high to select ON for an active-high enable. Drive SEL to GND to select
ON for an active-low enable.

Current-Limit Programming Input. Connect a resistor from ISET to GND to set the internal current limit. The
valid range for R

is 26kΩ to 60kΩ.

ISET

Enable Input. Drive ON high to enable the device when SEL is high. Drive ON low to enable the device when
SEL is low.

Power-Supply Input. Connect to an input power supply in the 2.75V to 5.5V range. Bypass IN to GND with a
1µF or greater ceramic capacitor.

Power Output. Bypass OUT to GND with a 1µF or greater capacitor. OUT is high impedance during
shutdown.

Open-Drain Fault-Indicator Output. FAULT is low when the input is below UVLO, or during current limit,
reverse current detection, or thermal shutdown.

7 GND Ground. Connect GND to the exposed paddle and to a ground plane.

8 ENRESET

Auto-Restart Enable Input. Drive ENRESET high to enable auto-restart mode. Drive ENRESET low to disable
auto-restart mode.

— EP Exposed Pad. Connect the exposed pad to a large ground plane to improve thermal power dissipation.

SEL

GND

IN

OSCILLATOR

CONTROL

LOGIC

CHARGE

PUMP

RESTART

CIRCUITRY

AUTO-

25mA

CURRENT-

LIMIT

CIRCUITRY

N

+

­O.5V

MAX8586

20ms
TIMER

THERMAL­SHUTDOWN
CIRCUITRY

UVLO

ON

OUT

ISET

ENRESET

FAULT

MAX8586

Single 1.2A USB Switch in
3mm x 3mm TDFN

8 _______________________________________________________________________________________

Detailed Description

Current-Limit Protection

The MAX8586 uses two methods to protect the circuit
from overcurrent conditions. Continuous current limiting
has tighter accuracy but slower response time com­pared to short-circuit limiting. Combining both methods
provides a high degree of protection for a variety of
faults. When a current-limit fault occurs with V

OUT

greater than 1V, the device operates in continuous cur­rent-limit mode and limits output current to a user-pro­grammable level. When V

OUT

is less than 1V, the
device operates in short-circuit current-limit mode and
pulses the output current to levels that are 30% (typ)
higher than the selected continuous current limit.

When either fault condition persists for 20ms (typ), the
fault flag is asserted. With the auto-restart enabled
(ENRESET high) the output also latches off and is test­ed with a 25mA current to detect when the fault condi­tion has been removed. 20ms after the fault condition is
removed, the output automatically restarts. With the
auto-restart disabled (ENRESET low), the output contin­ues to source the current-limit current as long as the
fault is present.

Reverse Current Protection

The USB specification does not allow an output device
to source current back into the USB port. However, the
MAX8586 is designed to safely power noncompliant
devices. During normal operation with the channel
enabled, if the current from the output to the input
exceeds 1A (typ) for more than 20ms (typ), the IC turns
off the switch and the FAULT flag is asserted. When the
IC is disabled, the output is switched to a high-imped­ance state, blocking reverse current flow from the out­put back to the input.

On/Off Control and UVLO

The MAX8586 has a selectable active-high/low ON
polarity. Drive SEL high to select an active-high for ON;
drive SEL low to select active-low for ON. The
MAX8586 includes a UVLO circuit to prevent erroneous
switch operation when the input voltage goes low dur­ing startup and brownout conditions. Input voltages of
less than +2.5V (typ) inhibit operation of the device.
FAULT asserts low during a UVLO condition.

Output Fault Protection and Auto-Restart

The MAX8586 uses an auto-restart function to detect
short-circuit removal by sourcing 25mA from the output
and monitoring the output voltage. When the voltage at

the output exceeds 0.5V for 20ms, the fault flag releases,
the output turns back on, and the 25mA current source
turns off. Active loads are not expected to draw measur­able current when supplied with less than 0.5V. The auto­restart function is enabled when ENRESET is high. Drive
ENRESET low to disable the auto-restart function. When
the auto-restart function is disabled, OUT regulates the
current to the programmed current limit.

Fault Indicator and Fault Blanking

The MAX8586 provides an open-drain output (FAULT)
to signal fault conditions. Connect FAULT to IN through
a 100kΩ pullup resistor for most applications. FAULT
asserts low when any of the following conditions occur:

• The input voltage is below the UVLO threshold.

• The switch junction temperature exceeds the
+160°C thermal-shutdown temperature limit.

• The switch is in current-limit or short-circuit current­limit mode for longer than the fault-blanking period
(20ms typ).

• The reverse current exceeds the 1A threshold for
longer than the fault-blanking period (20ms typ).

When auto-restart is enabled, the FAULT output goes
high impedance after a 20ms delay once the fault con­dition is removed. With auto-restart disabled, during the
fault the output is tested every 20ms. When the fault is
removed, the FAULT output goes high impedance after
a delay that can be up to 20ms. Ensure that the
MAX8586 input bypass capacitance prevents glitches
from triggering the FAULT output. To distinguish large
capacitive loads from short circuits or sustained over­loads, the MAX8586 has a fault-blanking circuit. When
a load transient causes the output to enter current limit,
an internal counter monitors the duration of the fault.
For load faults exceeding the 20ms fault-blanking time,
the switch turns off, FAULT asserts low, and the output
enters auto-restart mode (see the

Current-Limit

Protection

and

Output Fault Protection and Auto-Restart

sections). Only current-limit and short-circuit faults are
blanked. Thermal-overload faults and input voltages
below the UVLO threshold immediately turn the output
off and assert FAULT low.

Fault blanking allows the MAX8586 to handle USB
loads that might not be fully compliant with USB specifi­cations. The MAX8586 successfully powers USB loads
with additional bypass capacitance and/or large start­up currents while protecting the upstream power
source. No fault is reported if the switch brings up the
load within the 20ms blanking period.

MAX8586

Single 1.2A USB Switch in

3mm x 3mm TDFN

_______________________________________________________________________________________ 9

Thermal Shutdown

When the MAX8586 die temperature exceeds +160°C,
the switch turns off and FAULT goes low. Thermal shut­down does not utilize the 20ms fault-blanking timeout
period. When the junction temperature cools by 15°C,
the switch turns on again and FAULT returns high.
When an overload condition persists, the switch cycles
on and off, resulting in a pulsed output that reduces the
average system load.

Applications Information

Setting the Current Limit

A resistor from ISET to ground programs the current­limit value. Use a resistor between 26kΩ and 60kΩ to
set the current limit according to the formula:

I

LIM(TYPICAL)

= 36400 / R

ISET

(Amps)

Do not use R

ISET

values below 26kΩ because the maxi­mum current rating of the device may be exceeded.
R

ISET

values larger than 60kΩ are not recommended
and do not provide a lower limit current than 500mA. If
the output drops below 1V (typ), the MAX8586 shifts to a
short-circuit current-limit threshold that is 30% above the
programmed level given by the I

LIM(TYPICAL)

formula.

Input Power Supply and Capacitance

To limit the input voltage drop during momentary output
load transients, connect a capacitor from IN to ground.
A 1µF ceramic capacitor is required for local decou­pling; however, higher capacitor values further reduce
the voltage drop at the input. When driving inductive
loads, a larger capacitance may be needed to prevent
voltage spikes from exceeding the MAX8586’s absolute
maximum ratings.

Output Capacitance

A capacitor as large as 500µF is allowed on the output
to smooth out transients and/or increase rise/fall times.
Larger output capacitance may be used, but the result­ing output charge time during startup may exceed the
fault-blanking period resulting in a FAULT flag.

Driving Inductive Loads

A wide variety of devices (mice, keyboards, cameras,
and printers) typically connect to the USB port with
cables, adding an inductive component to the load. This
inductance causes the output voltage at the USB port to
oscillate during a load step. The MAX8586 drives induc­tive loads; however, care must be taken to avoid
exceeding the device’s absolute maximum ratings.
Usually, the load inductance is relatively small, and the
MAX8586’s input includes a substantial bulk capaci­tance from an upstream regulator as well as local

bypass capacitors, limiting overshoot. If severe ringing
occurs because of large load inductance, clamp the
MAX8586 output below +6V and above -0.3V.

Turn-On and Turn-Off Behavior

The MAX8586 features a slow turn-on and turn-off, mini­mizing loading transients on the upstream power
source. SEL sets the active polarity of the logic inputs of
the MAX8586. Drive ON to the same logic state as SEL
to enable the output. Drive ON to the opposite logic
state as SEL to disable the output (see Table 1). The
output enters a high-impedance state when disabled.

Layout and Thermal Dissipation

Keep all input/output traces as short as possible to
reduce the effect of undesirable parasitic inductance
and optimize the switch response time to output short­circuit conditions. Place input and output capacitors no
more than 5mm from device leads. Connect IN and OUT
to the power bus with short traces. Wide power bus
planes at IN and OUT provide superior heat dissipation
as well. An active switch dissipates little power with mini­mal change in package temperature. Calculate the
power dissipation for this condition as follows:

P = I

OUT

2

x R

ON

At the normal operating current (I

OUT

= 0.5A) and the
maximum on-resistance of the switch (95mΩ), the
power dissipation is:

P = (0.5A)2x 0.95Ω = 24mW

The worst-case power dissipation occurs when the out­put current is just below the current-limit threshold with
an output voltage greater than 1V. In this case, the
power dissipated in the switch is the voltage drop
across the switch multiplied by the current limit:

P = I

LIM

x (VIN- V

OUT

)

For a 5.5V input and 1V output, the maximum power
dissipation is:

P = 1.6A x (5.5V - 1V) = 7.2W

Table 1. SEL/ON Inputs

SEL ON OUT STATE

High High Enabled

High Low Disabled

Low High Disabled

Low Low Enabled

Because the package power dissipation is 1951mW, the
MAX8586 die temperature exceeds the +160°C thermal­shutdown threshold when dissipating 7.2W, and the
switch output shuts down until the junction temperature
cools by 15°C. The duty cycle and period are strong
functions of the ambient temperature and the PC board
layout (see the

Thermal Shutdown

section).

If the output current exceeds the current-limit threshold,
or the output voltage is pulled below the short-circuit
detect threshold, the MAX8586 enters a fault state after
20ms, at which point auto-restart mode is enabled and
25mA is sourced by the output to test for removal of the
overload. For a 5V input, OUT short circuited to GND,
and auto-restart mode active, the power dissipation is
as follows:

P = 0.025A x 5V = 0.125W

MAX8586

Single 1.2A USB Switch in
3mm x 3mm TDFN

10 ______________________________________________________________________________________

Chip Information

TRANSISTOR COUNT: 2117

PROCESS: BiCMOS

Figure 1. Typical Application Circuit

Pin Configuration

INPUT SUPPLY

2.75V TO 5.5V

1µF

OUTPUT

FAULT

INDICATOR

ON/OFF

POLARITY

SELECTION

CONTROL/

ON/OFF

R1
100kΩ

OUTPUT SUPPLY

C1

IN OUT

MAX8586

FAULT

SEL

ON

ENRESET

ISET

GND

UP TO 1.2A

C2
1µF

AUTO-RESTART

ON/OFF

R2
26kΩ

TOP VIEW

SEL

ISET

ON

1

2

3

4

IN

MAX8586

TDFN

8

7

6

5

ENRESET

GND

FAULT

OUT

MAX8586

Single 1.2A USB Switch in

3mm x 3mm TDFN

______________________________________________________________________________________ 11

Package Information

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.

PACKAGE TYPE PACKAGE CODE DOCUMENT NO.

8 TQFN-EP T833-2

21-0137

MAX8586

Single 1.2A USB Switch in
3mm x 3mm TDFN

12 ______________________________________________________________________________________

Package Information (continued)

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the
package regardless of RoHS status.

COMMON DIMENSIONS

SYMBOL

MIN. MAX.

A 0.70 0.80

D 2.90 3.10

E 2.90 3.10

0.00 0.05

A1

L0.20

0.25 MIN.k

A2 0.20 REF.

0.40

PACKAGE VARIATIONS

PKG. CODE

T633-2

T833-2

T833-3

T1033-1

T1033MK-1

T1033-2

T1433-1

T1433-2

N D2

6

1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF

8 1.50±0.10 2.30±0.10

1.50±0.10 2.30±0.10

8

10

1.50±0.10

1.50±0.10

10

10

1.70±0.10

14

14

1.70±0.10

14

E2 e

2.30±0.10

2.30±0.10

2.30±0.10

2.30±0.10

2.30±0.10

2.30±0.101.70±0.10

JEDEC SPEC

0.65 BSC

0.65 BSC

0.50 BSC

0.50 BSC MO229 / WEED-3

0.50 BSC1.50±0.10

0.40 BSC

0.40 BSC

0.40 BSC

MO229 / WEEC

MO229 / WEEC

MO229 / WEED-3

MO229 / WEED-3

- - - -

- - - -

b

[(N/2)-1] x e

0.30±0.05

0.30±0.05 1.95 REF

0.25±0.05

0.25±0.05 2.00 REF

0.25±0.05

0.20±0.05- - - -

0.20±0.05

0.20±0.05 2.40 REFT1433-3F

1.95 REF

2.00 REF

2.00 REF

2.40 REF

2.40 REF

MAX8586

Single 1.2A USB Switch in

3mm x 3mm TDFN

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.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________

13

© 2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.

Revision History

REVISION

NUMBER

0 11/04 Initial release —

1 1/09 Added automotive part number 1

2 1/10

REVISION

DATE

DESCRIPTION

Removed UL Listing Pending note, corrected top mark for automotive part, and added
soldering temperature (reflow)

PAGES

CHANGED

1, 2