ISL61853EIRZ_技术文档

Dual USB Port Power Supply Controller

ISL6185

Features

• 2.5V to 5V Operating Range

The ISL6185 USB power controller family provides

fully independent overcurrent (OC) fault protection

for two or more USB ports.

• 71mΩ Integrated Power P-channel MOSFET Switches

• Continuous Current Options for 0.6A, 1.1A, 1.5A and

1.8A

This product family consists of sixteen individual

functional product variants and three package options

and is operation rated for a nominal +2.5V to +5V

range and specified over the full commercial and

industrial temperature ranges.

• Thermally insensitive 12ms of Current Limiting Prior

to Turn-Off

• Output Discharges with Reverse Current Blocking

when Disabled

Each ISL6185 type incorporates in a single package

two 71mΩ P-channel MOSFET power switches for

power control and features internal current

monitoring, accurate current limiting and current

limited delay to turn-off for system supply protection

along with control and communication I/O.

• Latch-off or Auto Restart Options

• 1µA Off-State Supply Current.

• Enable Polarity Options

• Industry Std Pin for Pin SOIC and Smaller DFN Pkgs

Available

The ISL6185 family offers product variants with specified

continuous output current levels of 0.6A, 1.1A, 1.5A or

1.8A, enable active high or low inputs and latch off or

automatic retry after over current turn-off making these

devices well suited for many low power applications.

Applications

• USB 1, 2, 3 Port Power Management

• Low Power (18W) Electronic Circuit Limiting and

Breaker

This family of ICs is offered in an industry std. SOIC

pinout and also in the 70% smaller 3x3 DFN packages

providing similar or enhanced performance in the

smallest possible package.

Typical Application

Normalized r

DS(ON)

Temperature Characteristic

D+

Curve

D-

USB

PORT 1

1.3

U

S

B

VBUS

OUT_1

ENABLE_1

FAULT_1

VIN

1.2

1.1

1.0

0.9

0.8

0.7

C

O

N

T

R

O

L

E

R

+5V

GND

ISL6185

FAULT_2

ENABLE_2

OUT_2

VBUS

USB

PORT_2

D+

D-

-40

-25

0

25

45

75

85

115

TEMPERATURE (°C)

USB PORT POWER

October 22, 2010

FN6937.0

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

1

All other trademarks mentioned are the property of their respective owners.

ISL6185

Simplified Block Diagram

CHANNEL 1 LIKE CHANNEL 2

GND

VIN

FAULT_1

OUT_1

-

-V

comp

+

POR

EN_1

EN_2

CURRENT AND TEMP.

MONITORING, GATE,

DELAY & OUTPUT CONTROL

LOGIC

OUT_2

FAULT_2

Ordering Information

V

= 5V

IN

PART

MAXIMUM

NUMBER

(Notes 1, 2, 3)

PART

MARKING

EN/EN

INPUT

CONTINUOUS LATCH/AUTO

TEMP.

RANGE (°C)

PACKAGE

(Pb-free)

PKG.

DWG. #

IOUT (A)

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

ISL61851ACBZ

ISL61851BCBZ

ISL61851CCBZ

ISL61851DCBZ

ISL61851ECBZ

ISL61851FCBZ

ISL61851GCBZ

ISL61851HCBZ

ISL61851ICBZ

ISL61851JCBZ

ISL61851KCBZ

ISL61851LCBZ

ISL61852ACRZ

ISL61852BCRZ

ISL61852CCRZ

ISL61852DCRZ

ISL61852ECRZ

ISL61852FCRZ

61851A CBZ

61851B CBZ

61851C CBZ

61851D CBZ

61851E CBZ

61851F CBZ

61851G CBZ

61851H CBZ

61851I CBZ

61851J CBZ

61851K CBZ

61851L CBZ

52AC

EN

0.6

0 to +70

8 Lead SOIC M8.15

0.6

1.1

0.6

1.1

1.5

0.6

8 Lead DFN

L8.3x3J

52BC

0.6

52CC

1.1

52DC

1.1

52EC

0.6

52FC

0.6

FN6937.0

October 22, 2010

2

ISL6185

Ordering Information(Continued)

V

= 5V

IN

PART

MAXIMUM

NUMBER

(Notes 1, 2, 3)

PART

MARKING

EN/EN

INPUT

CONTINUOUS LATCH/AUTO

TEMP.

RANGE (°C)

PACKAGE

(Pb-free)

PKG.

DWG. #

IOUT (A)

1.1

1.5

0.6

1.1

0.6

1.1

1.5

1.8

0.6

1.1

0.6

1.1

1.5

0.6

1.1

0.6

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

ISL61852GCRZ

ISL61852HCRZ

ISL61852ICRZ

ISL61852JCRZ

ISL61852KCRZ

ISL61852LCRZ

ISL61853ACRZ

ISL61853BCRZ

ISL61853CCRZ

ISL61853DCRZ

ISL61853ECRZ

ISL61853FCRZ

ISL61853GCRZ

ISL61853HCRZ

ISL61853ICRZ

ISL61853JCRZ

ISL61853KCRZ

ISL61853LCRZ

ISL61853MCRZ

ISL61853NCRZ

ISL61853OCRZ

ISL61853PCRZ

ISL61851AIBZ

ISL61851BIBZ

ISL61851CIBZ

ISL61851DIBZ

ISL61851EIBZ

ISL61851FIBZ

ISL61851GIBZ

ISL61851HIBZ

ISL61851IIBZ

ISL61851JIBZ

ISL61851KIBZ

ISL61851LIBZ

ISL61852AIRZ

ISL61852BIRZ

ISL61852CIRZ

ISL61852DIRZ

ISL61852EIRZ

ISL61852FIRZ

52GC

EN

0 to +70

8 Lead DFN

L8.3x3J

52HC

52IC

0 to +70

52JC

0 to +70

52KC

0 to +70

52LC

0 to +70

53AC

0 to +70

10 Lead DFN L10.3x3

8 Lead SOIC M8.15

53BC

0 to +70

53CC

0 to +70

53DC

0 to +70

53EC

0 to +70

53FC

0 to +70

53GC

0 to +70

53HC

0 to +70

53IC

0 to +70

53JC

0 to +70

53KC

0 to +70

53LC

0 to +70

53MC

0 to +70

53NC

0 to +70

53OC

0 to +70

53PC

0 to +70

61851A IBZ

61851B IBZ

61851C IBZ

61851D IBZ

61851E IBZ

61851F IBZ

61851G IBZ

61851H IBZ

61851I IBZ

61851J IBZ

61851K IBZ

61851L IBZ

52AI

-40 to +85

8 Lead DFN

L8.3x3J

52BI

52CI

52DI

52EI

52FI

FN6937.0

October 22, 2010

3

ISL6185

Ordering Information(Continued)

V

= 5V

IN

PART

MAXIMUM

NUMBER

(Notes 1, 2, 3)

PART

MARKING

EN/EN

INPUT

CONTINUOUS LATCH/AUTO

TEMP.

RANGE (°C)

PACKAGE

(Pb-free)

PKG.

DWG. #

IOUT (A)

1.1

1.5

0.6

1.1

0.6

1.1

1.5

1.8

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

LATCH

RETRY

ISL61852GIRZ

ISL61852HIRZ

ISL61852IIRZ

ISL61852JIRZ

ISL61852KIRZ

ISL61852LIRZ

ISL61853AIRZ

ISL61853BIRZ

ISL61853CIRZ

ISL61853DIRZ

ISL61853EIRZ

ISL61853FIRZ

ISL61853GIRZ

ISL61853HIRZ

ISL61853IIRZ

ISL61853JIRZ

ISL61853KIRZ

ISL61853LIRZ

ISL61853MIRZ

ISL61853NIRZ

ISL61853OIRZ

ISL61853PIRZ

ISL61851EVAL1Z

ISL61852EVAL1Z

ISL61853EVAL1Z

NOTES:

52GI

EN

-40 to +85

8 Lead DFN

L8.3x3J

52HI

52II

52JI

52KI

52LI

53AI

53BI

53CI

53DI

53EI

53FI

53GI

53HI

53II

10 Lead DFN L10.3x3

53JI

53KI

53LI

53MI

53NI

53OI

53PI

8 Lead SOIC Evaluation Platform

8 Lead DFN Evaluation Platform

10 Lead DFN Evaluation Platform

1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.

2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach

materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both

SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that

meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

3. For Moisture Sensitivity Level (MSL), please see device information page for ISL6185. For more information on MSL please see

techbrief TB363.

FN6937.0

October 22, 2010

4

ISL6185

Pin Configurations

ISL6185

(8 LD SOIC/DFN)

TOP VIEW

ISL6185

(10 LD DFN)

TOP VIEW

GND

VIN

FLT1

OUT1

NC

1

2

3

4

5

10

9

GND

VIN

FLT1

OUT1

OUT2

1

2

3

4

8

7

6

5

(GND)

EPAD

DFN Only

(GND)

EPAD

VIN

8

7

EN1/EN1

EN2/EN2

OUT2

FLT2

EN1/EN1

6

EN2/EN2

FLT2

Pin Descriptions

PIN NUMBER

8 Ld

SOIC/DFN

10 Ld

DFN

SYMBOL

GND

DESCRIPTION

1

2

1

IC ground reference

2, 3

VIN

Chip bias, Controlled Voltage Input, Undervoltage Lock Out (UVLO). VIN provides chip

bias voltage. At VIN < 1.7V chip functionality is disabled, FLT is active and floating and

OUT is held low. Range 0V to 5.5V

3,

4

4,

5

EN1, EN1/

EN2, EN2

Enable/Disable inputs, Active high (EN) and active low (EN) options enable the power

switch. These inputs have internal 1MΩ pull off resistors. Range 0V to VIN

5,

8

6,

10

FLT2

FLT1

Overcurrent Fault Indicator. Overcurrent fault indicator. FLT floats and is disabled until

VIN >V

. This output is pulled low after the current limit time-out period has

expired. Fault is not signaled due to over-temperature shut down. Range 0V to VIN

UVLO

6,

7

7,

9

OUT2,

OUT1

Controlled Supply Output. Upon an OC condition I is current limited. Current limit

OUT

response time is within 200µs. This output will remain in current limit for a nominal

12ms before being turned off either for the latch or auto retry versions. Range 0V to VIN

-

8

NC

This pin is not electrically connected internally

PD

EPAD

Thermal Dissipation Exposed PAD Range: Connect to GND

(DFN only)

FN6937.0

October 22, 2010

5

ISL6185

Absolute Maximum Ratings

Thermal Information

Supply Voltage (VIN to GND, Note 7) . . . . . . . . . . . . . .6.5V

EN, FAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VIN

OUT . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VIN 0.3V

Output Current . . . . . . . . . . . . . . . . Short Circuit Protected

ESD Rating

Human Body Model (Per MIL-STD-883 Method 3015.7) 3kV

Machine Model (Per MIL-STD-883 Method 3015.7). . . 300V

Latch Up (Tested per JESD-78B; Class 2, Level A) . . . 100mA

Thermal Resistance (Typical, Note 4) θ_JA(°C/W) θ_JC(°C/W)

8 Lead SOIC Package (Note 4) . . .

8 Lead 3x3 DFN Package (Notes 5, 6)

120

48

N/A

6

10 Lead 3x3 DFN Package (Notes 5, 6) 53

6

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

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

Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . see link below

http://www.intersil.com/pbfree/Pb-FreeReflow.asp

Operating Conditions

Commercial Temperature Range. . . . . . . . . . . 0°C to +70°C

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

Supply Voltage Range (Typical) . . . . . . . . . . . . 2.3V to 5.5V

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact

product reliability and result in failures not covered by warranty.

NOTES:

4. θ is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief

JA

TB379 for details.

5. θ is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach”

JA

features. See Tech Brief TB379.

6. For θ , the “case temp” location is the center of the exposed metal pad on the package underside.

JC

7. All voltages are relative to GND, unless otherwise specified.

Electrical Specifications

V

= 5V, T = T , Unless Otherwise Specified. Boldface limits apply over the operating

A J

IN

temperature range, 0°C to +75°C or -40°C to +85°C.

MIN

MAX

SYMBOL

PARAMETER

TEST CONDITIONS

(Note 8) TYP (Note 8) UNITS

POWER SWITCH

r

ON-Resistance at 5.0V

(Pulse Tested)

V

= 5V, I

OUT

= 0.1A, T = T = +25°C

-

8

-

71

90

87

110

105

130

127

150

70

12

-

mΩ

mV

kΩ

DS(ON)_50

DS(ON)_33

DS(ON)_25

IN

A

J

T = T = +85°C

A

J

ON-Resistance at 3.3V

(Pulse Tested)

V

= 3.3V, I

= 0.1A, T = T = +25°C

IN

OUT A J

T = T = +85°C

A

J

On Resistance at 2.5V

(Pulse Tested)

V

= 2.5V, I

= 0.1A, T = T = +25°C

114

IN

OUT

A

J

T = T = +85°C

A

J

V

Disabled Output Voltage

Output Pull-Down Resistor

V

= 5V, Switch Disabled, 50µA Load

= 5V, Switch Disabled

50

9.6

100

200

23

OUT_DIS

IN

R

V

OUT_PU

t

V

Rise Time

R = 10Ω, C =10µF, 10% to 90%

µs

R

OUT

L

t

Slow V

Turn-off Fall Time

R = 10Ω, C =10µF, 90% to 10%

-

µs

F

OUT

L

t

Fast V

R = 1Ω, C =10µF, 80% to 20%

-

µs

F_fast

L

CURRENT CONTROL

I

Maximum Continuous Current, ISL6185xA,B,E,F

-

0.6

1.1

1.5

1.8

0.6

0.9

1.3

1.5

A

OUT_CONT_5

OUT_CONT_3

V

= 5V.

IN

ISL6185xC,D,G,H

Guaranteed by Itrip minimum

specification.

ISL6185xI,J,K,L

ISL61853M,N,O,P (10 Ld DFN)

Maximum Continuous Current, ISL6185xA,B,E,F

V

= 3.3V.

IN

ISL6185xC,D,G,H

Guaranteed by Itrip minimum

specification.

ISL61851I,J,K,L (SOIC)

ISL61852, ISL61853 (DFN)

FN6937.0

October 22, 2010

6

ISL6185

Electrical Specifications

V

= 5V, T = T , Unless Otherwise Specified. Boldface limits apply over the operating

IN

A

J

temperature range, 0°C to +75°C or -40°C to +85°C. (Continued)

MIN

MAX

SYMBOL

PARAMETER

TEST CONDITIONS

(Note 8) TYP (Note 8) UNITS

I

Maximum Continuous Current, ISL6185xA,B,E,F

-

0.6

0.9

-

A

OUT_CONT_2

V

= 2.5V

IN

ISL61851C,D,G,H (SOIC)

-

ISL61852, ISL61853 C,D,G,H (DFN)

ISL61853I,J,K,L (10 Ld DFN)

ISL61853M,N,O,P (10 Ld DFN)

ISL6185xA,B,E,F

-

1

-

1

-

1

-

I

Trip Current, V = 5V

IN

0.70

1.15

1.55

1.85

0.65

0.95

1.35

1.55

-

1.02

1.45

1.82

1.99

0.86

1.25

1.60

1.89

0.65

1

1.52

1.95

2.25

2.15

1.20

1.60

1.85

2.25

-

TRIP_5

TRIP_3

TRIP_2

ISL6185xC,D,G,H

ISL61853I,J,K,L

ISL61853M.N,O,P

Trip Current, V = 3.3V

IN

ISL6185xA,B,E,F

ISL6185xC,D,G,H

ISL61853I,J,K,L

ISL61853M.N,O,P

Trip Current, V = 2.5V

IN

ISL6185xA,B,E,F

ISL6185xC,D,G,H

-

ISL61853I,J,K,L

-

1.2

-

ISL61853M.N,O,P

-

1.6

-

I

Current Limit, V = 5V

IN

ISL6185xA,B,E,F, V - V

IN OUT

= 1V

0.50

0.98

1.30

1.52

0.45

0.90

1.25

1.48

0.47

0.90

1.15

1.3

0.60

1.00

1.15

1.20

0.35

0.65

0.70

0.90

-

0.65

1.14

1.55

1.83

0.63

1.10

1.50

1.78

0.61

1.05

1.37

1.63

0.80

1.27

1.61

1.70

0.48

0.80

1.06

1.24

0.61

1.06

1.30

1.39

0.78

1.28

1.72

2.20

0.75

1.26

1.68

2.05

0.74

1.17

1.58

1.90

1.00

1.55

1.85

2.5

LIM_5

I

ISL6185xC,D,G,H, V - V

IN

LIM_5

OUT

I

ISL61853I,J,K,L, V - V

IN

= 1V

LIM_5

OUT

I

ISL61853M,N,O,P, V - V

IN

= 1V

LIM_5

OUT

I

Current Limit, V = 3.3V

IN

ISL6185xA,B,E,F, V - V

IN OUT

LIM_3

I

ISL6185xC,D,G,H, V - V

IN

LIM_3

OUT

I

ISL61853I,J,K,L, V - V

IN

= 1V

LIM_3

OUT

I

ISL61853M,N,O,P, V - V

IN

= 1V

LIM_3

OUT

I

Current Limit, V = 2.5V

IN

ISL6185xA,B,E,F, V - V

IN OUT

LIM_2

I

ISL6185xC,D,G,H, V - V

IN

LIM_2

OUT

I

ISL61853I,J,K,L, V - V

IN

= 1V

LIM_2

OUT

I

ISL61853M,N,O,P, V - V

IN

= 1V

LIM_2

OUT

I

Short Circuit Current, V = 5V ISL6185xA,B,E,F, V

IN OUT

= 0V

sc_5

sc_3

sc_2

ISL6185xC,D,G,H, V

OUT

ISL61853I,J,K,L, V

= 0V

OUT

ISL61853M,N,O,P, V

ISL6185XA,B,E,F, V

= 0V

OUT

Short Circuit Current,

= 3.3V

0.60

0.95

1.25

1.50

OUT

V

IN

ISL6185XC,D,G,H, V

= 0V

OUT

ISL61853I,J,K,L, V

= 0V

OUT

ISL61853M,N,O,P, V

ISL6185xA,B,E,F, V

= 0V

OUT

Short Circuit Current,

= 2.5V

OUT

V

IN

ISL6185xC,D,G,H, V

= 0V

-

OUT

ISL61853I,J,K,L, V

= 0V

-

OUT

ISL61853M,N,O,P, V

= 0V

-

OUT

FN6937.0

October 22, 2010

7

ISL6185

Electrical Specifications

V

= 5V, T = T , Unless Otherwise Specified. Boldface limits apply over the operating

IN

A

J

temperature range, 0°C to +75°C or -40°C to +85°C. (Continued)

MIN

MAX

SYMBOL

tsett

PARAMETER

TEST CONDITIONS

(Note 8) TYP (Note 8) UNITS

OC to Limit Settling Time

V

/R = 2I

, C = 10µF to within 10% of

-

200

-

µs

Ilim

IN

L

LIM

L

I

LIM

tsett

Ilim_sev

Severe OC to Limit Settling

Time

V

/R = 4I

, C = 10µF to within 10% of

L

-

30

µs

IN

L

LIM

I

LIM

t

Current Limit Duration

Automatic Retry Period

I

= I

LIM

9.2

12

1

15

ms

s

CL

OUT

t

0.80

1.35

RTY

I/O PARAMETERS

Vfault_lo

Ifault

Fault Output Voltage

Fault I

OUT

= 10mA

-

0.4

-

V

µA

V

Fault Leakage

5

Venr_5

ENABLE Rising Threshold

V

= 5V

1.5

80

1.8

140

2

IN

Hys_Venr_5 ENABLE Rising Threshold

Hysteresis

V

= 5V

175

mV

IN

Venr_3

ENABLE Rising Threshold

V

= 3.3V

1.0

58

1.3

80

1.6

V

IN

Hys_Venr_3 ENABLE Rising Threshold

Hysteresis

V

120

mV

IN

Venr_2

ENABLE Rising Threshold

V

= 2.5V

0.95

30

1.1

70

1.3

V

IN

Hys_Venr_2 ENABLE Rising Threshold

Hysteresis

V

110

mV

IN

Ren_h

Ren_l

ENABLE Pull-Down Resistor

ENABLE Pull-Up Resistor

Enable asserted high options

Enable asserted low options

0.6

-

1

1.55

-

MΩ

ms

t

Enable to Output Turn-on Time R = 10Ω, C = 10µF, Enable 50% to Output

0.1

ON

L

90%

t

Enable to Output Turn-off Time R = 10Ω, C = 10µF, Enable 50% to Output

-

0.25

-

ms

OFF

L

10%

BIAS PARAMETERS

I

Enabled V Current

IN

Switches Closed, OUTPUT = OPEN

Switches Open, OUTPUT = OPEN

50

2

75

5

µA

V

VDD

UVLO

Disabled V Current

IN

-

1.7

200

-

V

Rising POR Threshold

POR Hysteresis

V

Rising to functional operation

2.1

360

2.3

580

2

IN

UV

HYS

mV

µA

I

Reverse Blocking Leakage

Current

V

= 0V, V = 5V

OUT

VR

IN

Temp_dis

Temp_hys

Over-Temperature Disable

-

150

20

-

°C

Over-Temperature Hysteresis

NOTE:

8. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established

by characterization and are not production tested.

FN6937.0

October 22, 2010

8

ISL6185

Introduction

Functional Description

The ISL6185 is a dual channel fully independent

overcurrent (OC) fault protection IC for the +2.5V to +5V

environment. Each ISL6185 incorporates in a single

package two 85mΩ P-channel MOSFET power switches

for power control. Independent enabling inputs and fault

reporting outputs compatible with 2.5V to 5V logic allows

for external control and reporting. This device features

integrated power switches with current monitoring,

accurate current limiting, reverse bias protection and

current limited timed delay to turn-off for system

reliability. See Figures 11 through 26 for typical

operational waveforms including both under and

overcurrent situations.

Power On Preset (POR)

The ISL6185 POR feature inhibits device functionality

when VIN <V

.

UVLO

Reverse Polarity Protection

In any event where the power switch is disabled and

V

> V there will be no output to input current flow

OUT

IN

nor will the output voltage appear on the input.

Soft-Start

Upon enable, the switch passes a constant current to

the load. The voltage on the VOUT pin will ramp up

according the equation: I

active load will slow the V

of its curve.

/C

(V/s). Resistive or

ramp up toward the top

LIM OUT

The ISL6185 offers current sense and limiting with

OUT

V

= 5V guaranteed continuous current product

IN

variants of 0.6A, 1.1A, 1.5A and 1.8A making these

devices well suited for a myriad of USB and other low

power (9W max) port power management applications

and configurations.

Fault Blanking On Start-Up

During initial turn-on, the ISL6185 prevents nuisance

faults being reported to the system controller by blanking

the fault signal until the internal FET is fully enhanced.

The ISL6185 also provides a thermally insensitive timed

OC turn-off and fault notification, isolating and protecting

the voltage bus in the event of a peripheral OC event or

short circuit event independent of the adjoining switch’s

electrical or the ambient thermal condition.

Current Trip and Limiting Levels

The ISL6185 provides integrated current sensing in the

MOSFET that allows for rapid control of OC events. Once

an OC condition is detected the ISL6185 goes into its

current limiting (CL) control mode. The ISL6185 is

variant specified to allow a continuous current (I

operation of 0.6A, 1.1A, 1.5A or 1.8A. As the current

increases past its continuous current rating it will reach a

level that causes the device to enter its current limit

mode, that is the current trip level. The current trip level

is in all cases adequately above the I

not cause unintended false faults. The current limit is

The ISL6185 undervoltage lockout feature prevents

turn-on of the outputs unless the correct ENABLE

)

CONT

state and V > V

turn-on the ISL6185 prevents fault reporting by

are present. During initial

IN

UVLO

blanking the fault signal.

During operation, once an OC condition is detected

rating as to

CONT

the output is current limited for t to allow transient

CL

OC conditions to pass. If still in current limit after the

current limit period has elapsed, the output is then

turned off and the fault is reported by pulling the

corresponding FAULT output low. On the latch off

options, after turn-off both the output and the FAULT

signal are latched low until reset by the enable signal

being de-asserted or a POR occurs at which time the

FAULT signal will clear and the switch is ready to be

turned back on. On the auto restart options the

ISL6185 will attempt to periodically turn-on the

output as long as the enable is asserted.

specified at V = V - 1V to test a known

OUT IN

representative condition and is featured at a nominal

value slightly higher than the continuous current rating.

The speed of this current limiting control is inversely

related to the magnitude of the OC fault. Thus a hard

overcurrent is more quickly pulled to its limiting value

than a marginal OC condition.

Over-Temperature Shutdown

Although the ISL6185 has an over-temperature

shutdown and lockout feature, because of the 12ms

timed shutdown the thermal shutdown is likely only to be

invoked in extremely high ambient temperatures.

When disabled the ISL6185 has a low quiescent supply

current and output to input reverse current flow blocking

capability.

The over- temperature protection invokes and disables

the switch turn-on operation once the die temperature is

~+140°C, it will turn off an already on switch at

~+150°C and releases the part to operation once the die

temperature falls to ~+120°C.

The ISL6185 family is provided with enable polarity

options and an industry standard 8 lead SOIC pinout

along with two versions in the 70% smaller 3x3 DFN. The

8 Ld DFN package offers the same performance as the

8 Ld SOIC whereas the 10 Ld DFN offers higher current

capability in the smallest possible package because of

lower package electrical and thermal resistance.

FN6937.0

October 22, 2010

9

ISL6185

reset by the enable signal being de-asserted at which

Turn-off Time Delay

time the FAULT signal will clear and the IC is ready for

enable to assert. On the auto restart options the

ISL6185 will attempt to periodically turn-on the

output at approximately 1s intervals as long as the

enable is asserted. If the OC condition remains

indefinitely so will the fault indication and the restart

attempts until such time that the thermal protection

feature is invoked increasing the restart period.

During operation, once an OC condition is detected

the output is current limited for ~12ms to allow

transient OC conditions to pass. If still in current limit

and after the current limit period has elapsed, the

output is then turned off and the fault is reported by

pulling the corresponding FAULT low. The internal

12ms timer starts upon current limiting and is

independent of ambient or IC thermal conditions

providing more consistent operation over the entire

temp range.

Active Output Pull-down

Another ISL6185 feature is the 10kΩ active pull-down on

the outputs to <60mV above GND when the device is

disabled ensuring discharge of the load.

Latchoff Restart/Auto-Restart Start

After turn-off, with the latch off options both the

output and the FAULT signal are latched low until

Typical Performance Curves

150

140

130

1.3

1.2

1.1

1.0

0.9

0.8

0.7

V

= 2.5V

= 3.3V

IN

120

110

100

90

V

IN

80

70

V

= 5V

115

IN

60

50

-40 -25

0

25

45

75

85

-40

-25

0

25

45

75

85

115

TEMPERATURE (°C)

FIGURE 1. SWITCH ON-RESISTANCE AT 0.5A

FIGURE 2. NORMALIZED SWITCH RESISTANCE

1.6

1.5

1.2

5V I

TRIP

1.1

1.0

0.9

0.8

0.7

0.6

0.5

0.4

5V I

TRIP

1.4

1.3

1.2

1.1

1.0

0.9

0.8

0.7

0.6

5V I

SC

3.3V I

TRIP

3.3V I

TRIP

5V I

LIM

5V I

SC

3.3V I

LIM

3.3V I

LIM

3.3V I

85

SC

3.3V I

75 85

SC

115

-40 -25

0

25

45

-40 -25

0

25

45

75

115

TEMPERATURE (°C)

FIGURE 4. 1.1A CONTINUOUS CURRENT

CHARACTERISTICS

FIGURE 3. 0.6A CONTINUOUS CURRENT

CHARACTERISTICS

FN6937.0

October 22, 2010

10

ISL6185

Typical Performance Curves (Continued)

2.0

2.2

2.0

1.8

1.6

1.4

1.2

1.0

5V I

TRIP

1.8 5V I

TRIP

3.3V I

TRIP

3.3V I

5V I

TRIP

SC

1.6

1.4

1.2

1.0

0.8

5V I

SC

5V I

3.3V I

LIM

5V I

LIM

3.3V I

LIM

3.3V I

SC

-40 -25

0

25

45

75

85

115

-40

-25

0

25

45

75

85

115

TEMPERATURE (°C)

FIGURE 5. 1.5A CONTINUOUS CURRENT

CHARACTERISTICS

FIGURE 6. 1.8A CONTINUOUS CURRENT

CHARACTERISTICS

0.75

1.25

0.6A CONTINUOUS I

OUT

VERSION

1.1A CONTINUOUS I

VERSION

OUT

+3 SIGMA

0.70

0.65

0.60

0.55

0.50

1.20

1.15

1.10

1.05

1.00

+3 SIGMA

TYPICAL

-3 SIGMA

TYPICAL

-3 SIGMA

-40 -25

0

25

45

75

85

115

-40

-25

0

25

45

75

85

115

TEMPERATURE (°C)

FIGURE 7. LIMITING CURRENT ±3 SIGMA, V

IN

= 5V

FIGURE 8. LIMITING CURRENT ±3 SIGMA, V = 5V

IN

1.65

2.00

1.8A CONTINUOUS I

VERSION

1.5A CONTINUOUS I

VERSION

OUT

1.95

1.90

1.85

1.80

1.75

1.70

1.65

1.60

+3 SIGMA

1.60

1.55

1.50

1.45

1.40

1.35

+3 SIGMA

TYPICAL

-3 SIGMA

-40

-25

0

25

45

75

85

115

-40 -25

0

25

45

75

85

115

TEMPERATURE (°C)

FIGURE 10. LIMITING CURRENT ±3 SIGMA, V =5V

IN

FIGURE 9. LIMITING CURRENT ±3 SIGMA, V

= 5V

IN

FN6937.0

October 22, 2010

11

ISL6185

Typical Performance Curves (Continued)

ENABLE

C =1µF

L

C =10µF

L

C =10µF

L

V

OUT

1V/DIV

C =100µF

L

C =100µF

L

VOUT

1V/DIV

C =1µF

L

FIGURE 11. V

TURN-ON/RISE TIME vs C

.

FIGURE 12. V

TURN-OFF/FALL TIME

OUT

LOAD

V

= 5V, R = 10Ω

vs C

. V

= 5V, R = 10Ω

IN

L

LOAD

IN L

0.6A I

VARIANT

CONT

FLT

C =10µF

L

V

OUT

1V/DIV

C =100µF

L

I

IN

C =1µF

L

FIGURE 13. LATCH-OFF vs C

FIGURE 14. I

VARIANT

WAVEFORM

LIM

LOAD

0.6A I

VARIANT

0.6A I

CONT

2A OC 27µs

6A/ms

0.6A/ms

1A OC 57µs

0.08A/ms

0.5A OC 200µs

0.72A CURRENT LIMIT

0.53A LOAD CURRENT

0.66A CURRENT LIMIT

0.56A LOAD CURRENT

I

2A/DIV

IN

FIGURE 16. PEAK CURRENT SETTLING TIMES

FIGURE 15. OC RAMP RATE I

WAVEFORMS

LIM

FN6937.0

October 22, 2010

12

ISL6185

Typical Performance Curves (Continued)

ENABLE

0.6A I

VARIANT

V

CONT

OUT

0.6A I

CONT

VARIANT

FAULT

I

IN

LIMITED TO 0.64A

I

IN

V

OUT

FIGURE 18. TURN-ON INTO MOMENTARY OC

FIGURE 17. TURN-ON INTO A SHORT

1.1A I

VARIANT

FLT

CONT

V

OUT

FLT

V

OUT

I

IN

I

IN

FIGURE 19. ISL6185 RETRY FUNCTION

FIGURE 20. I

WAVEFORM

LIM

ENABLE

FAULT

ENABLE

FAULT

V

OUT

V

OUT

Iin

I

1.8A I

VARIANT

IN

CONT

1.8A I

VARIANT

CONT

FIGURE 21. V

= 2.5V TURN-ON INTO 2.2Ω

FIGURE 22. V

= 5V TURN-ON INTO 2.7Ω

IN

FN6937.0

October 22, 2010

13

ISL6185

Typical Performance Curves (Continued)

CH1 and CH2 ON

(3.6A TOTAL I

I

IN

)

IN

ENABLE

FAULT

V

OUT

CH1 ON

(1.8A)

I

IN

LIMITED TO 1.7A

ENABLE

FAULT

1.8A I

1.8A ICONT VARIANT

VARIANT

V

CONT

OUT

FIGURE 24. TURN-ON 2ND OUTPUT TO FULL LOAD

FIGURE 23. TURN-ON INTO A SHORT

1.1A I

VARIANT

FLT

CONT

V

OUT

FLT

V

OUT

I

IN

I

IN

FIGURE 25. ISL6185 RETRY FUNCTION

FIGURE 26. PROPAGATION DELAY AND OUTPUT TRANSITION TIMES

FIGURE 26. I

WAVEFORM

LIM

Test Circuits

-

+

V

10k

FLT

OUTPUT

sized

for desired

OC level

FLT

5V

VIN

EN

OUT

ISL6185

R

L

5V

OUTPUT

VIN

OUT

10µF

10

10µF

ISL6185

EN

10

R

L

r

= V/(VOUT/10Ω)

DS(ON)

FIGURE 27B. CURRENT LIMITING

FIGURE 27. DC TEST CIRCUIT

FIGURE 27A. r

DS(ON)

FN6937.0

October 22, 2010

14

ISL6185

Test Circuits(Continued)

VIN

0V

EN

0.5VIN

OFF

10k

t

ON

FLT

OUT

ISL6185

VIN

90%

5V

OUTPUT

VIN

EN

OUTPUT

10µF

10%

0-V

IN

GND

10

VIN

90%

OUTPUT

10%

t

-GND

t

R

F

FIGURE 28A. TRANSIENT TEST CIRCUIT

FIGURE 29. TRANSIENT WAVEFORM MEASUREMENT

POINTS

ISL6185xEVAL1Z Schematic and Photo

R1

FLT1

OUT1

10k

R3

10

AGND

C2

FLT1

AGND

U1

V+

EN1

OUT1

OUT2

A

10µF

V+

A

ISL6185

R4

FLT2

OUT2

EN2

A

10

C3

A

10µF

R2

FLT2

10k

NOTE: EXPOSED PAD only on DFN packages

FIGURE 30A. ISL6185xEVAL SCHEMATIC

FIGURE 30B. ISL61851EVAL1Z BOARD PHOTO

FIGURE 30. ISL6185xEVAL1Z SCHEMATIC and ISL61851EVAL1Z PHOTOGRAPH

FN6937.0

October 22, 2010

15

ISL6185

Application Information

Using the ISL6185xEVAL1Z Platform

General and Biasing Information

Application Considerations

The application considerations for the ISL6185 family are

widely accepted best industry practices. Good decoupling

practices on the VIN pin must be followed with placement

close to the IC with at least 2.2µF being recommended.

Work to reduce the input and output inductance to the

ISL6185 with good PCB layout practices.

There are three (3) evaluation platforms for the ISL6185

family. There is one (1) for each package style, each with

a different continuous output current level and a mix of

enable polarity and output retry or latch options. See the

bottom of Table 1 for standard available evaluation board

options. Figure 30A, illustrates the common schematic

for all of the evaluation boards, consult the individual

package pinouts for those differences.

When designing with the 1.5A and 1.8A versions in an

implementation where the output may be unloaded

(open) while the ISL6185 is turned on, a minimum of

4.7µF of capacitive output load is recommended to

prevent high dv/dt from unnecessarily activating the

surge/ESD control circuit.

The evaluation platform is biased and monitored through

numerous labeled test points. See Table 1 for test point

assignments and descriptions.

The ISL6185 provides several continuous current rated

TABLE 1. ISL61851EVAL1Z TEST POINT ASSIGNMENTS

devices specified at V = 5V, these are 0.6A, 1.1A, 1.5A

and 1.8A options capable over the entire temperature

IN

TP NAME

GND

DESCRIPTION

Eval Board and IC Gnd

extreme. At V = 3.3V the current capability is

IN

degraded and the ISL6185 is specified at 0.6A, 1.1A,

V+

Eval Board and IC Bias

Enable Switch 1

Enable Switch 2

Switch 2 Fault

1.3A and 1.5A respectively. At V = 2.5V there are no

IN

min specifications but a typical value is provided for

+25°C operation in the specification table. This degraded

EN1

EN2

capability is due to the higher r

at the lower bias voltage.

of the FET switch

DS(ON)

FLT2

The enhanced thermal characteristics and increased

number of bond wires allows the 10 Ld DFN to have a

higher current capability than either the 8 Ld SOIC or

DFN.

OUT2

OUT1

FLT1

Switch Out 2

Switch Out 1

Switch 1 Fault

TABLE 2. ISL6185XEVAL1Z BOARD COMPONENT

LISTING

Upon proper bias and of the evaluation platform and

correct enabling of the IC the ISL6185 will have a

COMPONENT

DESIGNATOR

COMPONENT

FUNCTION

COMPONENT

DESCRIPTION

nominal V /10Ω load current passing through each

IN

enabled switch which is below the continuous current

rating. See Figures 11 and 12 for typical ISL6185 turn-on

and off waveforms.

U1

ISL6185

Intersil, ISL6185

R3 - R4

Output Load

Resistors

10Ω, 5%, 3W

External current loading in excess of the trip current level

for the particular part being evaluated will result in the

ISL6185 entering the current limiting mode. Figure 14

illustrates the current limiting mode for the ISL6185

product variants with 0.6A of continuous load current

rating. The scope shot shows current limiting for ~12ms

before it is turned off and the fault signal is asserted.

R1 - R2

C1

FLT Output pull 10kΩ, 0805

up resistor

Decoupling

Capacitor

2.2µF, 0805

C2 - C3

Load Capacitor

10µF 16V Electrolytic,

Radial Lead

FN6937.0

October 22, 2010

16

ISL6185

Revision History

The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to

web to make sure you have the latest Rev.

DATE

REVISION

CHANGE

10/22/10

FN6937.0

Initial release.

Products

Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The

Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones,

handheld products, and notebooks. Intersil's product families address power management and analog signal

processing functions. Go to www.intersil.com/products for a complete list of Intersil product families.

*For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device

information page on intersil.com: ISL6185

To report errors or suggestions for this datasheet, please go to www.intersil.com/askourstaff

FITs are available from our website at http://rel.intersil.com/reports/search.php

FN6937.0

October 22, 2010

17

ISL6185

Package Outline Drawing

L8.3x3J

8 LEAD DUAL FLAT NO-LEAD PLASTIC PACKAGE

Rev 0 9/09

2X 1.950

3.00

A

6X 0.65

B

5

8

(4X)

0.15

1.64 +0.10/ - 0.15

6

PIN 1

INDEX AREA

6

PIN #1 INDEX AREA

4

1

4

8X 0.30

0.10 M C A B

8X 0.400 ± 0.10

TOP VIEW

2.38

+0.10/ - 0.15

BOTTOM VIEW

SEE DETAIL "X"

( 2.38 )

( 1.95)

C

0.10

C

Max 1.00

0.08

C

SIDE VIEW

( 8X 0.60)

(1.64)

( 2.80 )

PIN 1

5

C

0 . 2 REF

(6x 0.65)

0 . 00 MIN.

0 . 05 MAX.

( 8 X 0.30)

DETAIL "X"

TYPICAL RECOMMENDED LAND PATTERN

NOTES:

1. Dimensions are in millimeters.

Dimensions in ( ) for Reference Only.

2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994.

3.

Unless otherwise specified, tolerance : Decimal ± 0.05

4. Dimension applies to the metallized terminal and is measured

between 0.15mm and 0.30mm from the terminal tip.

Tiebar shown (if present) is a non-functional feature.

5.

6.

The configuration of the pin #1 identifier is optional, but must be

located within the zone indicated. The pin #1 identifier may be

either a mold or mark feature.

FN6937.0

October 22, 2010

18

ISL6185

Package Outline Drawing

L10.3x3

10 LEAD DUAL FLAT PACKAGE (DFN)

Rev 6, 09/09

6

3.00

A

B

PIN #1 INDEX AREA

1

2

6

PIN 1

INDEX AREA

10 x 0.23

4

(4X)

0.10

1.60

10x 0.35

4

TOP VIEW

BOTTOM VIEW

C A B

M

0.10

(4X)

0.415

0.23

PACKAGE

OUTLINE

0.35

SEE DETAIL "X"

0.10

(10 x 0.55)

(10x 0.23)

C

BASE PLANE

0.20

SEATING PLANE

0.08 C

SIDE VIEW

(8x 0.50)

5

0.20 REF

0.05

C

1.60

TYPICAL RECOMMENDED LAND PATTERN

DETAIL "X"

NOTES:

1. Dimensions are in millimeters.

Dimensions in ( ) for Reference Only.

2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994.

3. Unless otherwise specified, tolerance : Decimal ± 0.05

4. Lead width applies to the metallized terminal and is measured

between 0.18mm and 0.30mm from the terminal tip.

Tiebar shown (if present) is a non-functional feature.

5.

6.

The configuration of the pin #1 identifier is optional, but must be

located within the zone indicated. The pin #1 indentifier may be

either a mold or mark feature.

FN6937.0

October 22, 2010

19

ISL6185

Small Outline Plastic Packages (SOIC)

M8.15 (JEDEC MS-012-AA ISSUE C)

8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE

N

INDEX

AREA

0.25(0.010)

M

B M

H

INCHES MILLIMETERS

E

SYMBOL

MIN

MAX

MIN

1.35

0.10

0.33

0.19

4.80

3.80

MAX

1.75

0.25

0.51

0.25

5.00

4.00

NOTES

-B-

A

A1

B

C

D

E

e

0.0532

0.0040

0.013

0.0688

0.0098

0.020

-

1

2

3

L

9

SEATING PLANE

A

0.0075

0.1890

0.1497

0.0098

0.1968

0.1574

-

-A-

3

h x 45°

D

4

-C-

0.050 BSC

1.27 BSC

-

α

H

h

0.2284

0.0099

0.016

0.2440

0.0196

0.050

5.80

0.25

0.40

6.20

0.50

1.27

-

e

A1

C

5

B

0.10(0.004)

L

6

0.25(0.010) M

C

A M B S

N

α

8

7

NOTES:

0°

8°

0°

8°

-

1. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of

Publication Number 95.

Rev. 1 6/05

2. Dimensioning and tolerancing per ANSI Y14.5M-1982.

3. Dimension “D” does not include mold flash, protrusions or gate burrs.

Mold flash, protrusion and gate burrs shall not exceed 0.15mm (0.006

inch) per side.

4. Dimension “E” does not include interlead flash or protrusions. Inter-

lead flash and protrusions shall not exceed 0.25mm (0.010 inch) per

side.

5. The chamfer on the body is optional. If it is not present, a visual index

feature must be located within the crosshatched area.

6. “L” is the length of terminal for soldering to a substrate.

7. “N” is the number of terminal positions.

8. Terminal numbers are shown for reference only.

9. The lead width “B”, as measured 0.36mm (0.014 inch) or greater

above the seating plane, shall not exceed a maximum value of

0.61mm (0.024 inch).

10. Controlling dimension: MILLIMETER. Converted inch dimensions

are not necessarily exact.

For additional products, see www.intersil.com/product_tree

Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems as noted

in the quality certifications found at www.intersil.com/design/quality

Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications

at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by

Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any

infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any

patent or patent rights of Intersil or its subsidiaries.

For information regarding Intersil Corporation and its products, see www.intersil.com

FN6937.0

October 22, 2010

20


型号：	ISL61853EIRZ
厂家：	Intersil
描述：	Dual USB Port Power Supply Controller 双USB端口电源控制器光电二极管控制器
文件：	总20页 (文件大小：394K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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