intersil ISL6119 DATA SHEET

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ISL6119

Data Sheet March 2004

USB Dual Port Power Supply Controller

The ISL6119 is a USB dual port power controller, fully independent overcurrent (OC) fault protection IC. Operational over the +2.5V to +5.5V range, this device features internal current monitoring, accurate current limiting, integrated power switches and current limited delay to latch-off for system protection.

The ISL6119 current sense and limiting circuitry sets the current limit to a nominal 1A, making this device well suited for the USB port power management application. The ISL6119 provides OC fault notification, accurate current limiting and a consistent timed latch-off thus isolating and protecting the voltage bus in the presence of an OC event or short circuit. The 12ms time to latch-off is independent of the adjoining switch’s electrical or thermal condition and the OC response time is inversely related to the OC magnitude.

Each ISL6119 incorporates in a single 8 lead SOIC package two 80mΩ N-channel MOSFET power switches for power control. Each switch is driven by a constant current source giving a controlled ramp up of the output voltage. This provides a soft start turn-on eliminating bus voltage drooping caused by inrush current while charging heavy load capacitances. Independent enabling inputs and fault reporting outputs for each channel are compatible with 3V and 5V logic to allow external control and monitoring.

The ISL6119 undervoltage lockout feature prevents turn-on of the outputs unless the correct ENABLE state and VIN >

2.5V are present. During initial turn-on the ISL6119 prevents fault reporting by blanking the fault signal. Rising and falling outputs are current limited voltage ramps so that both the inrush current and voltage slew rate are limited, independent of load. This reduces supply droop due to surge and eliminates the need for external EMI filters. During operation, once an OC condition is detected the appropriate output is current limited for 12ms to allow transient conditions to pass. If still in current limit after the current limit period has elapsed, the output is then latched off and the fault is reported by pulling the corresponding FAULT

low. The FAULT signal is latched low until reset by the ENABLE signal being de-asserted at which time the FAULT

signal will clear.

FN9002.3

Features

•80mΩ Integrated Power N-channel MOSFET Switches

• Accurate Current Sensing and 1A Current Limiting

• 12ms Fault Delay to Latch-Off, No Thermal Dependency

• 2.5V to 5.5V Operating Range

• Disabled Output Internally Pulled Low

• Undervoltage Lockout

• Controlled Turn-on Ramp Time

• Channel Independent Fault Output Signals

• Compatible with 3.3V and 5V Logic Families

• Channel Independent Logic Level Enable High Inputs (ISL6119H) or Enable Low Inputs (ISL6119L)

• Pb-Free Package Options

• Available in Tape & Reel with ‘-T’ Part Number Suffix

Applications

• USB Port Power Management

• Electronic Circuit Limiting and Breaker

Ordering Information

PART

NUMBER

ISL6119LIB -40 to 85 8 Lead SOIC M8.15

ISL6119LIBZA (Note)

ISL6119HIB -40 to 85 8 Lead SOIC M8.15

ISL6119HIBZA (Note)

ISL6119EVAL1 Evaluation Platform

ISL6119USBEVAL1 USB Dual Port Evaluation Platform

NOTE: Intersil Pb-free products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which is 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-020B.

Pinout

TEMP.

RANGE (°C) PACKAGE

-40 to 85 8 Lead SOIC (Pb-free) M8.15

ISL6119 (SOIC)

TOP VIEW

DWG. #

PKG.

ENABLE_1

ENABLE_2

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

1-888-INTERSIL or 321-724-7143

| Intersil (and design) is a registered trademark of Intersil Americas Inc.

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

GND

VIN

FAULT_1

OUT_1

OUT_2

FAULT_2

Typical Application: Dual USB Port Power

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ISL6119

D+

U S B

C O N T R O L L E R

Simplified Block Diagram

+5V

ENABLE_1

FAULT_1

VIN

FAULT_2

ENABLE_2

D-

ISL6119L

D+

D-

OUT_1

GND

OUT_2

USB PORT 1

V+

USB PORT_2

CHANNEL 1 LIKE CHANNEL 2

GND

VIN

Q-PUMP

POR

EN_1

EN_2 FAULT_2

CURRENT AND TEMP.

MONITORING, GATE AND

OUTPUT CONTROL

LOGIC

FAULT_1

OUT_1

OUT_2

ISL6119

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Pin Descriptions

PIN NO. DESIGNATOR FUNCTION DESCRIPTION

1 GND IC Reference

2 VIN Chip bias, Controlled

Supply Input, Undervoltage lock-out

3, 4 ENABLE_1, 2/

ENABLE_1, 2

5, 8 FAULT_2, 1

6, 7 OUT_2, 1 Channel 2,1 Controlled

Channel Enable/ Enable Not Inputs

Channel 2, 1 Over Current Fault Not Indicator

Supply Output

VIN provides chip bias voltage. At VIN < 2.5V chip functionality is disabled, FAULT is cleared and floating and OUT is held low.

Enables/Disables switch.

Channel overcurrent fault indicator. FAULT floats and is disabled until VIN >2.5V. This output is pulled low after the OC timeout period has expired and stays latched until ENABLE is deasserted.

Channel voltage output, connect to load to protect. Upon an OC condition I current limited to 1A. Current limit response time is within 200µs. This output will remain in current limit for a nominal 12ms before being latched off.

OUT

latch

ISL6119

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Absolute Maximum Ratings Thermal Information

Supply Voltage (VIN to GND). . . . . . . . . . . . . . . . . . . . . . . . . . . 6.0V

EN, FAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V

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

Thermal Resistance (Typical, Note 1)

8 Lead SOIC Package . . . . . . . . . . . . . . . . . . . . . . . 96

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

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

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C

(SOIC - Lead Tips Only)

Operating Conditions

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

Supply Voltage Range (Typical) . . . . . . . . . . . . . . . . . . 2.7V to 5.5V

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:

is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.

1. θ

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

(°C/W)

Electrical Specifications Supply Voltages = 5V, T

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS

POWER SWITCH

ISL6119 On Resistance at 2.7V r

ISL6119 On Resistance at 3.3V r

ISL6119 On Resistance at 5.0V r

Disabled Output Voltage V

Vout Rising Rate t_vout_rt R

Slow Vout Turn-off Rate t_svout_offt R

Fast Vout Turn-off Rate t_fvout_offt R

CURRENT CONTROL

Current Limit, VIN = 3.3V - 5V Ilim Vout = 0.8V 0.75 1 1.25 A

OC Regulation Settling Time tsett

Severe OC Regulation Settling Time tsett

Over Current Latch-off Time t

I/O PARAMETERS

Fault Output Voltage Vfault_hi Fault I

ENABLE High Threshold Ven_vih VIN = 5.5V 2.0 - - V

ENABLE Low Threshold at 2.7V Ven_vil VIN = 2.7V - - 0.6 V

ENABLE Low Threshold at 5.5V Ven_vil VIN = 5.5V - - 0.8 V

ENABLE Input Current Ien_i ENABLE = 0V to 5V, VIN = 5V, T

BIAS PARAMETERS

Enabled VIN Current I

Disabled VIN Current I

Undervoltage Lockout Threshold V

UV Hysteresis UV

Over Temperature Disable Temp_dis - 150 - °C

DS(ON)_27

DS(ON)_33

DS(ON)_50

OUT_DIS

Ilim

Ilim_sevRL

OC_loff

VDD

UVLO

HYS

= T

= -40 to 85°C, Unless Otherwise Specified

VIN = 2.7V I

= TJ = 85°C - 115 130 mΩ

VIN = 3.3V, I

= TJ = 85°C - 115 130 mΩ

VIN = 5V, I

= TJ = 85°C - 115 130 mΩ

VIN = 5V, Switch Disabled, 50µA Load - 300 450 mV

= 10Ω, CL = 0.1µF, 10%-90% - 10 - V/ms

= 10Ω, CL = 0.1µF, 90%-10% - 10 - V/ms

= 1Ω, CL = 0.1µF, 9 0 % -1 0 % - 4 - V/ µs

RL = 5Ω, CL = 0.1µF to Within 10% of CR - 2 - ms

< 1Ω, CL = 0.1µF to Within 10% of CR - 100 - µs

ISL6119X, Tj = +25°C - 10 - ms

OUT

Switches Closed, OUTPUT = OPEN, TJ > 0°C - 120 200 µA

Switches Open, OUTPUT = OPEN - 1 5 µA

VIN Rising, Switch Enabled 1.7 2.25 2.5 V

= 0.7A TA = TJ = 25°C - 90 105 mΩ

OUT

= 0.7A TA = TJ = 25°C - 80 100 mΩ

OUT

= 0.7A TA = TJ = 25°C - 80 95 mΩ

OUT

= 10mA - - 0.4 V

> 25°C -0.5 - 0.5 µA

50 100 - mV

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