DATASHEET

USB Port Power Supply Controller
ISL6186
Features
The ISL6186 USB power controller family provides
overcurrent (OC) fault protection for one or more USB ports.
• 2.5V to 5V Operating Range
This product family consists of eight 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.
• Continuous Current Options for 1.5A, 3A and 3.6A
Each ISL6186 type incorporates a 45mΩ P-channel MOSFET
power switch 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.
• Output Discharges with Reverse Current Blocking When
Disabled
The ISL6186 family offers product variants with specified
continuous output current levels of 1.5A, 3A or 3.6A, enable
active high or low inputs, and latch off or automatic retry after
overcurrent turn-off, making these devices well suited for many
low-power applications.
This family of ICs is offered in an industry standard SOIC package
as well as in the 70% smaller 3x3 DFN package, which provides
the same performance and an additional Power-Good output
feature in the smallest possible (10 Ld DFN) package.
• 45mΩ Integrated Power P-channel MOSFET Switches
• Thermally Insensitive 12ms of Current Limiting Prior to
Turn-Off
• Latch-off or Auto Restart and Enable Polarity Options
• 1µA Off-State Supply Current
• Industry Standard Pin-for-Pin SOIC and Smaller DFN
Packages Available
Applications
• USB Port Power Management Including USB 3.0
• Low Power Electronic Circuit Limiting and Breaker
D+
D-
C
O
N
T
R
O
L
L
E
R
USB
PORT 1
OUT
ENABLE
1.2
FAULT
+5V
VIN
GND
ISL6186
VBUS
D+
DUSB PORT POWER
FIGURE 1. TYPICAL APPLICATION
November 3, 2011
FN7698.2
1
1.3
VBUS
USB
PORT_2
NORMALIZED rDS(ON)
U
S
B
1.1
1.0
0.9
0.8
0.7
-40
-25
0
25
45
75
85
115
TEMPERATURE (°C)
FIGURE 2. NORMALIZED rDS(ON) TEMPERATURE
CHARACTERISTIC CURVE
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
ISL6186
Simplified Block Diagram
GND
PGD
-VCOMP
PGD only on 10DFN
+
OUT
VIN
POR
VIN
OUT
CURRENT AND TEMP.
MONITORING, GATE,
DELAY AND OUTPUT CONTROL
LOGIC
EN
FAULT
Pin Configurations
ISL6186
(10 LD DFN)
TOP VIEW
ISL6186
(8 LD SOIC/DFN)
TOP VIEW
GND
VIN
VIN
EN/EN
1
2
3
8
(GND)
EPAD
DFN ONLY
4
7
6
5
OUT
OUT
OUT
GND
1
10
PGD
VIN
2
9
OUT
VIN
3
8
OUT
VIN
4
EN/EN
5
(GND)
EPAD
7
OUT
6
FLT
FLT
Pin Descriptions
PIN NUMBER
8 Ld
SOIC/DFN
10 Ld DFN
SYMBOL
1
1
GND
IC ground reference
2, 3
2, 3, 4
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
4
5
EN/EN
2
DESCRIPTION
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
FN7698.2
November 3, 2011
ISL6186
Pin Descriptions (Continued)
PIN NUMBER
8 Ld
SOIC/DFN
10 Ld DFN
SYMBOL
DESCRIPTION
5
6
FLT
Overcurrent Fault Indicator. Overcurrent fault indicator. FLT floats and is disabled until VIN > VUVLO. 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
6, 7, 8
7, 8, 9
OUT
Controlled Supply Output. Upon an OC condition, IOUT is current limited. Current limit 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
-
10
PGD
Open drain Power-Good output that pulls low 40ms after VOUT = 90% of VIN and rises after VOUT< 85%
of VIN. Range 0V to VIN
PD
(DFN only)
PD
EPAD
Thermal Dissipation Exposed PAD Range: Connect to GND.
Ordering Information
PART
NUMBER
(Notes 1, 2, 3)
VIN = 5V MAXIMUM
CONTINUOUS IOUT
LATCH/
POWER- GOOD
(A)
AUTO RETRY
OUTPUT
PART
MARKING
EN/EN
INPUT
TEMP.
RANGE (°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL61861ACBZ
61861A CBZ
EN
1.5
LATCH
NO
0 to +70
8 Ld SOIC
M8.15
ISL61861BCBZ
61861B CBZ
EN
1.5
RETRY
NO
0 to +70
8 Ld SOIC
M8.15
ISL61861CCBZ
61861C CBZ
EN
3
LATCH
NO
0 to +70
8 Ld SOIC
M8.15
ISL61861DCBZ
61861D CBZ
EN
3
RETRY
NO
0 to +70
8 Ld SOIC
M8.15
ISL61861ECBZ
61861E CBZ
EN
1.5
LATCH
NO
0 to +70
8 Ld SOIC
M8.15
ISL61861FCBZ
61861F CBZ
EN
1.5
RETRY
NO
0 to +70
8 Ld SOIC
M8.15
ISL61861GCBZ
61861G CBZ
EN
3
LATCH
NO
0 to +70
8 Ld SOIC
M8.15
ISL61861HCBZ
61861H CBZ
EN
3
RETRY
NO
0 to +70
8 Ld SOIC
M8.15
ISL61862ACRZ
62AC
EN
1.5
LATCH
NO
0 to +70
8 Ld DFN
L8.3x3J
ISL61862BCRZ
62BC
EN
1.5
RETRY
NO
0 to +70
8 Ld DFN
L8.3x3J
ISL61862CCRZ
62CC
EN
3
LATCH
NO
0 to +70
8 Ld DFN
L8.3x3J
ISL61862DCRZ
62DC
EN
3
RETRY
NO
0 to +70
8 Ld DFN
L8.3x3J
ISL61862ECRZ
62EC
EN
1.5
LATCH
NO
0 to +70
8 Ld DFN
L8.3x3J
ISL61862FCRZ
62FC
EN
1.5
RETRY
NO
0 to +70
8 Ld DFN
L8.3x3J
ISL61862GCRZ
62GC
EN
3
LATCH
NO
0 to +70
8 Ld DFN
L8.3x3J
ISL61862HCRZ
62HC
EN
3
RETRY
NO
0 to +70
8 Ld DFN
L8.3x3J
ISL61863ACRZ
63AC
EN
1.5
LATCH
YES
0 to +70
10 Ld DFN
L10.3x3
ISL61863BCRZ
63BC
EN
1.5
RETRY
YES
0 to +70
10 Ld DFN
L10.3x3
ISL61863CCRZ
63CC
EN
3
LATCH
YES
0 to +70
10 Ld DFN
L10.3x3
ISL61863DCRZ
63DC
EN
3
RETRY
YES
0 to +70
10 Ld DFN
L10.3x3
ISL61863ECRZ
63EC
EN
1.5
LATCH
YES
0 to +70
10 Ld DFN
L10.3x3
ISL61863FCRZ
63FC
EN
1.5
RETRY
YES
0 to +70
10 Ld DFN
L10.3x3
ISL61863GCRZ
63GC
EN
3
LATCH
YES
0 to +70
10 Ld DFN
L10.3x3
ISL61863HCRZ
63HC
EN
3
RETRY
YES
0 to +70
10 Ld DFN
L10.3x3
ISL61863ICRZ
63IC
EN
3.6
LATCH
YES
0 to +70
10 Ld DFN
L10.3x3
3
FN7698.2
November 3, 2011
ISL6186
Ordering Information (Continued)
PART
NUMBER
(Notes 1, 2, 3)
PART
MARKING
EN/EN
INPUT
VIN = 5V MAXIMUM
CONTINUOUS IOUT
LATCH/
POWER- GOOD
(A)
AUTO RETRY
OUTPUT
TEMP.
RANGE (°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL61863JCRZ
63JC
EN
3.6
RETRY
YES
0 to +70
10 Ld DFN
L10.3x3
ISL61863KCRZ
63KC
EN
3.6
LATCH
YES
0 to +70
10 Ld DFN
L10.3x3
ISL61863LCRZ
63LC
EN
3.6
RETRY
YES
0 to +70
10 Ld DFN
L10.3x3
ISL61861AIBZ
61861A IBZ
EN
1.5
LATCH
NO
-40 to +85
8 Ld SOIC
M8.15
ISL61861BIBZ
61861B IBZ
EN
1.5
RETRY
NO
-40 to +85
8 Ld SOIC
M8.15
ISL61861CIBZ
61861C IBZ
EN
3
LATCH
NO
-40 to +85
8 Ld SOIC
M8.15
ISL61861DIBZ
61861D IBZ
EN
3
RETRY
NO
-40 to +85
8 Ld SOIC
M8.15
ISL61861EIBZ
61861E IBZ
EN
1.5
LATCH
NO
-40 to +85
8 Ld SOIC
M8.15
ISL61861FIBZ
61861F IBZ
EN
1.5
RETRY
NO
-40 to +85
8 Ld SOIC
M8.15
ISL61861GIBZ
61861G IBZ
EN
3
LATCH
NO
-40 to +85
8 Ld SOIC
M8.15
ISL61861HIBZ
61861H IBZ
EN
3
RETRY
NO
-40 to +85
8 Ld SOIC
M8.15
ISL61862AIRZ
62AI
EN
1.5
LATCH
NO
-40 to +85
8 Ld DFN
L8.3x3J
ISL61862BIRZ
62BI
EN
1.5
RETRY
NO
-40 to +85
8 Ld DFN
L8.3x3J
ISL61862CIRZ
62CI
EN
3
LATCH
NO
-40 to +85
8 Ld DFN
L8.3x3J
ISL61862DIRZ
62DI
EN
3
RETRY
NO
-40 to +85
8 Ld DFN
L8.3x3J
ISL61862EIRZ
62EI
EN
1.5
LATCH
NO
-40 to +85
8 Ld DFN
L8.3x3J
ISL61862FIRZ
62FI
EN
1.5
RETRY
NO
-40 to +85
8 Ld DFN
L8.3x3J
ISL61862GIRZ
62GI
EN
3
LATCH
NO
-40 to +85
8 Ld DFN
L8.3x3J
ISL61862HIRZ
62HI
EN
3
RETRY
NO
-40 to +85
8 Ld DFN
L8.3x3J
ISL61863AIRZ
63AI
EN
1.5
LATCH
YES
-40 to +85
10 Ld DFN
L10.3x3
ISL61863BIRZ
63BI
EN
1.5
RETRY
YES
-40 to +85
10 Ld DFN
L10.3x3
ISL61863CIRZ
63CI
EN
3
LATCH
YES
-40 to +85
10 Ld DFN
L10.3x3
ISL61863DIRZ
63DI
EN
3
RETRY
YES
-40 to +85
10 Ld DFN
L10.3x3
ISL61863EIRZ
63EI
EN
1.5
LATCH
YES
-40 to +85
10 Ld DFN
L10.3x3
ISL61863FIRZ
63FI
EN
1.5
RETRY
YES
-40 to +85
10 Ld DFN
L10.3x3
ISL61863GIRZ
63GI
EN
3
LATCH
YES
-40 to +85
10 Ld DFN
L10.3x3
ISL61863HIRZ
63HI
EN
3
RETRY
YES
-40 to +85
10 Ld DFN
L10.3x3
ISL61863IIRZ
63II
EN
3.6
LATCH
YES
-40 to +85
10 Ld DFN
L10.3x3
ISL61863JIRZ
63JI
EN
3.6
RETRY
YES
-40 to +85
10 Ld DFN
L10.3x3
ISL61863KIRZ
63KI
EN
3.6
LATCH
YES
-40 to +85
10 Ld DFN
L10.3x3
ISL61863LIRZ
63LI
EN
3.6
RETRY
YES
-40 to +85
10 Ld DFN
L10.3x3
ISL61861EVAL1Z (ISL61861C)
EN
3
LATCH
NO
-
8 Ld SOIC
EVAL BOARD
ISL61862EVAL1Z (ISL61862F)
EN
1.5
RETRY
NO
-
8 Ld DFN
EVAL BOARD
ISL61863EVAL1Z (ISL61863L)
EN
3.6
RETRY
YES
-
10 Ld DFN
EVAL BOARD
NOTES:
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 ISL6186. For more information on MSL please see Tech Brief TB363.
4
FN7698.2
November 3, 2011
ISL6186
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; Limited to 5A
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)
θJA (°C/W) θJC (°C/W)
8 Lead SOIC Package (Note 4) . . . . . . . . . .
120
N/A
8 Lead 3x3 DFN Package (Notes 5, 6) . . .
48
6
10 Lead 3x3 DFN Package (Notes 5, 6) . .
48
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). . . . . . . . . . . . . . . . . . . . . . . . . 2.5V 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. θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
5. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
6. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
7. All voltages are relative to GND, unless otherwise specified.
Electrical Specifications
VIN = 5V, TA = TJ, Unless Otherwise Specified. Boldface limits apply over the operating temperature
range, 0°C to +75°C or -40°C to +85°C.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
(Note 8)
TYP
MAX
(Note 8)
UNITS
-
45
48
mΩ
-
50
54
mΩ
-
54
57
mΩ
POWER SWITCH
rDS(ON)_50
ON-Resistance at 5.0V (Pulse Tested) VIN = 5V, IOUT = 0.5A, TA = TJ = +25°C
TA = TJ = +85°C
rDS(ON)_33
ON-Resistance at 3.3V (Pulse Tested) VIN = 3.3V, IOUT = 0.5A, TA = TJ = +25°C
rDS(ON)_25
On Resistance at 2.5V (Pulse Tested) VIN = 2.5V, IOUT = 0.5A, TA = TJ = +25°C
TA = TJ = +85°C
-
61
64
mΩ
-
65
69
mΩ
TA = TJ = +85°C
-
74
79
mΩ
-
22
45
mV
3.4
5
6
kΩ
VOUT_DIS
Disabled Output Voltage
VIN = 5V, Switch Disabled, 50µA Load
ROUT_PD
Output Pull-Down Resistor
VIN = 5V, Switch Disabled
tR
VOUT Rise Time
RL = 10Ω, CL = 10µF, 10% to 90%
-
10
-
µs
tF
Slow VOUT Turn-off Fall Time
RL = 10Ω, CL = 10µF, 90% to 10%
-
200
-
µs
ISL6186xA, B, E, F
-
-
1.5
A
ISL6186xC, D, G, H
-
-
3.0
A
ISL6186xI, J, K, L (10 Ld DFN)
-
-
3.6
A
ISL6186xA, B, E, F
-
-
1.5
A
ISL6186xC, D, G, H
-
-
2.5
A
ISL61861I, J, K, L (10 Ld DFN)
-
-
2.7
A
ISL6186xA, B, E, F
-
1.2
-
A
ISL61861C, D, G, H (SOIC)
-
1.8
-
A
IOUT_CONT_2
ISL61862, ISL61863 C, D, G, H (DFN)
-
2
-
A
IOUT_CONT_2
ISL61863I, J, K, L (10 Ld DFN)
-
2
-
A
CURRENT CONTROL
IOUT_CONT_5
IOUT_CONT_5
IOUT_CONT_5
IOUT_CONT_3
IOUT_CONT_3
IOUT_CONT_3
IOUT_CONT_2
IOUT_CONT_2
Maximum Continuous Current,
VIN = 5V
Guaranteed by the Minimum Itrip
Current Specification
Maximum Continuous Current,
VIN = 3.3V
Guaranteed by the Minimum Itrip
Current Specification
Maximum Continuous Current,
VIN = 2.5V
5
FN7698.2
November 3, 2011
ISL6186
Electrical Specifications
VIN = 5V, TA = TJ, Unless Otherwise Specified. Boldface limits apply over the operating temperature
range, 0°C to +75°C or -40°C to +85°C. (Continued)
MIN
(Note 8)
TYP
MAX
(Note 8)
UNITS
ISL6186xA, B, E, F
1.7
2.5
3.3
A
ITRIP_5
ISL6186xC, D, G, H
3.0
3.9
4.5
A
ITRIP_5
ISL61863I, J, K, L (10 Ld DFN)
3.7
3.9
5.0
A
ISL6186xA, B, E, F
1.7
2.1
2.7
A
ITRIP_3
ISL6186xC, D, G, H
2.8
3.5
4.0
A
ITRIP_3
ISL61863I, J, K, L (10 Ld DFN)
3.5
3.9
4.3
A
ISL6186xA, B, E, F
-
1.8
-
A
ITRIP_2
ISL6186xC, D, G, H
-
3.2
-
A
ITRIP_2
ISL61863I, J, K, L (10 Ld DFN)
-
3.4
-
A
SYMBOL
ITRIP_5
ITRIP_3
ITRIP_2
PARAMETER
Trip Current, VIN = 5V
Trip Current, VIN = 3.3V
Trip Current, VIN = 2.5V
ISL6186xA, B, E, F, VIN - VOUT = 1V
1.37
1.6
1.81
A
ILIM_5
ISL6186xC, D, G, H, VIN - VOUT = 1V
2.82
3.1
3.42
A
ILIM_5
ISL61863I, J, K, L, (10 Ld DFN) VIN - VOUT = 1V
3.24
3.6
4.00
A
ISL6186xA, B, E, F, VIN - VOUT = 1V
1.35
1.5
1.77
A
ISL6186xC, D, G, H, VIN - VOUT = 1V
2.72
3.0
3.35
A
ILIM_5
ILIM_3
Current Limit, VIN = 5V
TEST CONDITIONS
Current Limit, VIN = 3.3V
ILIM_3
ISL61863I, J, K, L (10 Ld DFN), VIN - VOUT = 1V
3.22
3.5
3.95
A
ISL6186xA, B, E, F, VIN - VOUT = 1V
1.30
1.5
1.70
A
ILIM_2
ISL6186xC, D, G, H, VIN - VOUT = 1V
2.55
2.9
3.14
A
ILIM_2
ISL61863I, J, K, L (10 Ld DFN), VIN - VOUT = 1V
3.07
3.3
3.75
A
ISL6186xA, B, E, F, VOUT = 0V
1.45
2.0
2.35
A
ISL6186xC, D, G, H, VOUT = 0V
2.60
3.4
4.50
A
ILIM_3
ILIM_2
Isc_5
Current Limit, VIN = 2.5V
Short Circuit Current, VIN = 5V
Isc_5
ISL61863I, J, K, L (10 Ld DFN), VOUT = 0V
2.48
3.5
5.00
A
ISL6186XA, B, E, F, VOUT = 0V
0.95
1.2
1.50
A
Isc_3
ISL6186XC, D, G, H, VOUT = 0V
1.95
2.2
2.70
A
Isc_3
ISL61863I, J, K, L (10 Ld DFN), VOUT = 0V
2.00
2.5
3.00
A
ISL6186xA, B, E, F, VOUT = 0V
-
1.1
-
A
Isc_2
ISL6186xC, D, G, H, VOUT = 0V
-
2.1
-
A
Isc_2
ISL61863I, J, K, L, (10 Ld DFN) VOUT = 0V
-
2.4
-
A
OC to Limit Settling Time
VIN/RL = 2ILIM, CL = 10µF to within 10% of ILIM
-
200
-
µs
Severe OC to Limit Settling Time
VIN/RL = 4ILIM, CL = 10µF to within 10% of ILIM
-
30
-
µs
tCL
Current Limit Duration
IOUT = ILIM
9.2
12
15
ms
tRTY
Automatic Retry Period
0.80
1
1.35
s
-
-
0.45
V
-
5
-
µA
Isc_5
Isc_3
Isc_2
tsettIlim
tsettIlim_sev
Short Circuit Current, VIN = 3.3V
Short Circuit Current, VIN = 2.5V
I/O PARAMETERS
Vfault_lo
Ifault
Venr_5
Hys_Venr_5
Venr_3
Hys_Venr_3
Venr_2
Hys_Venr_2
Fault Output Voltage
Fault IOUT = 10mA
Fault Leakage
ENABLE/ENABLE Rising Threshold
VIN = 5V
1.5
1.8
2
V
EN/EN Threshold Hysteresis
VIN = 5V
65
140
175
mV
ENABLE/ENABLE Rising Threshold
VIN = 3.3V
1.0
1.3
1.6
V
EN/EN Threshold Hysteresis
VIN = 3.3V
30
80
120
mV
ENABLE/ENABLE Rising Threshold
VIN = 2.5V
0.95
1.1
1.3
V
EN/EN Threshold Hysteresis
VIN = 2.5V
10
70
110
mV
6
FN7698.2
November 3, 2011
ISL6186
Electrical Specifications
VIN = 5V, TA = TJ, Unless Otherwise Specified. Boldface limits apply over the operating temperature
range, 0°C to +75°C or -40°C to +85°C. (Continued)
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
(Note 8)
TYP
MAX
(Note 8)
UNITS
Ren_h
ENABLE Pull-Down Resistor
Enable asserted high options
0.6
1
1.55
MΩ
Ren_l
ENABLE Pull-Up Resistor
Enable asserted low options
0.6
1
1.55
MΩ
tON
Enable to Output Turn-on Time
RL = 10Ω, CL = 10µF, Enable 50% to Output 90%
-
0.1
-
ms
tOFF
Enable to Output Turn-off Time
RL = 10Ω, CL = 10µF, Enable 50% to Output 10%
-
0.25
-
ms
tpdPGr
Enable to Power Good Output Rising
Time
Disable to Power-Good De-assert
-
30
-
ns
PG Vth
Power Good Threshold
PGD pulls low when VOUT/VIN
88
91
95
%
PGN Vth
Power Not Good Threshold
PGD release high when VOUT/VIN
78
86
93
%
tVthr2PG
PG Vth to PG Falling
PG delay after PG Vth
-
1.5
-
µs
tVthf2PG
PGN Vth to PG Rising
PG delay after PGN Vth
-
45
-
µs
BIAS PARAMETERS
IVDD
Enabled VIN Current
Switches Closed, OUTPUT = OPEN
-
57
75
µA
IVDD
Disabled VIN Current
Switches Open, OUTPUT = OPEN
-
3.5
5.5
µA
VUVLO
Rising POR Threshold
VIN Rising to functional operation
-
2.1
2.3
V
Reverse Blocking Leakage Current
VIN = 0V, VOUT = 5V
-
0.3
2.0
µA
IVR
Temp_dis
Over-Temperature Disable
-
150
-
°C
Temp_hys
Over-Temperature Hysteresis
-
20
-
°C
NOTE:
8. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
Introduction
The ISL6186 is a single channel overcurrent (OC) fault protection
IC for the +2.5V to +5V environment. Each ISL6186 has a 45mΩ
P-channel MOSFET power switch for power control. An enabling
input and fault reporting output compatible with 2.5V to 5V logic
allows for external control and reporting. This device features an
integrated power switch with current monitoring, accurate
current limiting, reverse bias protection, and current limited
timed delay to turn-off for system reliability. See Figures 11
through 27 for typical operational waveforms including both
undercurrent and overcurrent situations.
The ISL6186 offers current sense and limiting with VIN = 5V to
guarantee continuous current levels of 1.5A, 3A and 3.6A, making
these devices well suited for a myriad of USB and other low-power
(18W max) port power management applications and
configurations.
The ISL6186 also provides thermally insensitive timed OC turn-off
and fault notification, isolating and protecting the voltage bus in the
event of a peripheral OC or short circuit independent of the ambient
thermal condition.
The ISL6186 undervoltage lockout feature prevents turn-on of
the output unless the correct ENABLE state and VIN > VUVLO are
present. During initial turn-on, the ISL6186 prevents false fault
reporting by blanking the fault signal.
7
During operation, once an OC condition is detected, the output
is current limited for tCL to allow transient 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 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
occurring. At this time, the FAULT signal will clear and the
switch is ready to be turned back on. On the auto restart
options, the ISL6186 will attempt to periodically turn on the
output as long as the enable is asserted.
When disabled, the ISL6186 has a low quiescent supply current
and output to input reverse current flow blocking capability.
The ISL6186 family is provided with enable polarity options and
an industry standard 8 Ld 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
due to its lower package electrical and thermal resistance.
Additionally, the 10 Ld DFN has a Power-Good output PGD that
pulls low 40ms after VOUT>90% of VIN and rises after VOUT< 85%
of VIN.
FN7698.2
November 3, 2011
ISL6186
Functional Description
Over-Temperature Shutdown
Power On Reset (POR)
Although the ISL6186 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. FAULT does not respond to OT events.
The ISL6186 POR feature inhibits device functionality when VIN
<VUVLO.
Reverse Polarity Protection
In any event in which the power switch is disabled or powered
down, and VOUT > VIN, there will be no output to input current
flow, nor will the output voltage appear on the input.
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.
Turn-off Time Delay
Soft-Start
Upon enable, the voltage on the VOUT pin will ramp up according
to the equation: ILIM/COUT (V/s). Resistive or active load will slow
the VOUT ramp-up toward the top of its curve.
Fault Blanking On Start-Up
During initial turn-on, the ISL6186 prevents nuisance faults being
reported to the system controller by blanking the fault signal until
the internal FET is fully enhanced.
Current Trip and Limiting Levels
The ISL6186 provides integrated current sensing in the MOSFET,
which allows for rapid control of OC events. Once an OC condition
is detected, the ISL6186 goes into its current limiting (CL) control
mode. The ISL6186 is variant specified to allow a continuous
current (ICONT) operation of 1.5A, 3A or 3.6A. 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 ICONT rating so as not to cause unintended false faults.
The current limit is specified at VOUT = VIN - 1V to test a known
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.
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 FAULT output low. The internal 12ms
timer starts upon current limiting and is independent of ambient
or IC thermal conditions, thus providing more consistent
operation over the entire temperature range.
Latch-off Restart/Auto-Restart Start
After turn-off, with the latch-off options, both the output and the
FAULT signal are latched low until reset by the enable signal
being de-asserted, at which time the FAULT signal will clear and
the IC is ready for enable to assert. On the auto-restart options,
the ISL6186 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 as the thermal
protection feature is invoked, thus increasing the restart period.
Power-Good Output
This feature is an active low, open-drain, power-good indicator
that asserts after VOUT/VIN>90% and de-asserts when VOUT/VIN
< 85%. It immediately de-asserts upon the IC being disabled.
Active Output Pull-down
Another ISL6186 feature is the 10kΩ active pull-down on the
outputs to <60mV above GND when the device is disabled, thus
ensuring discharge of the load.
Typical Performance Curves
1.3
85
75
VIN = 2.5V
70
65
60
VIN = 3.3V
55
50
VIN = 5V
45
NORMALIZED rDS(ON)
rDS(ON) @ 0.5A (mΩ)
80
1.2
1.1
1.0
0.9
0.8
40
35
-40
-25
0
25
45
75
TEMPERATURE (°C)
85
FIGURE 3. SWITCH ON-RESISTANCE AT 0.5A
8
115
0.7
-40
-25
0
25
45
75
TEMPERATURE (°C)
85
115
FIGURE 4. NORMALIZED SWITCH RESISTANCE
FN7698.2
November 3, 2011
ISL6186
Typical Performance Curves
(Continued)
4.0
3.0
2.5
3.3V ITRIP
2.0
5V Isc
2.5V ITRIP
1.5
5V ILIM
3.3V ILIM
2.5V ILIM
3.3V ISC
1.0
-40
3.5
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
5V ITRIP
3.0
1.5
1.75
1.70
4.0 3.3V ITRIP
5V ILIM
3.5 3.3V ILIM
2.5V ITRIP
2.5V ILIM
3.0
3.3V ISC
2.5V ISC
-40
25
TEMPERATURE (°C)
85
+3SIGMA
TYPICAL
-3SIGMA
1.55
1.50
1.45
1.40
-40
3.90
3A CONTINUOUS IOUT VERSION
3.2
3.1
+3SIGMA
3.85
TYPICAL
3.80
-3SIGMA
3.0
2.9
2.8
25
TEMPERATURE (°C)
3.6A CONTINUOUS IOUT VERSION
+3SIGMA
3.75
3.70
TYPICAL
3.65
3.60
-3SIGMA
3.55
-40
25
85
TEMPERATURE (°C)
FIGURE 9. LIMITING CURRENT ±3 SIGMA, VIN = 5V
9
85
FIGURE 8. LIMITING CURRENT ±3 SIGMA, VIN = 5V.
ILIMIT ± 3 SIGMA (A)
ILIMIT ± 3 SIGMA (A)
1.5A CONTINUOUS IOUT VERSION
1.60
1.30
85
3.4
2.7
25
TEMPERATURE (°C)
1.35
FIGURE 7. 3.6A CONTINUOUS CURRENT CHARACTERISTICS
3.3
-40
1.65
ILIMIT ± 3 SIGMA (A)
OUTPUT CURRENT (A)
5V ISC
2.0
2.5V ISC
FIGURE 6. 3A CONTINUOUS CURRENT CHARACTERISTICS
4.5
2.5
2.5V ILIM
3.3V ISC
2.0
85
FIGURE 5. 1.5A CONTINUOUS CURRENT CHARACTERISTICS
5V ILIM
3.3V ITRIP
5V ISC
3.3V ILIM
2.5 2.5V ITRIP
2.5V ISC
25
TEMPERATURE (°C)
5V ITRIP
3.50
-40
25
85
TEMPERATURE (°C)
FIGURE 10. LIMITING CURRENT ±3 SIGMA, VIN = 5V
FN7698.2
November 3, 2011
ISL6186
Typical Performance Curves
(Continued)
EN
EN
FAULT
FAULT
VOUT
VOUT
Iin
IIN
FIGURE 11. 1.5A VARIANT ILIM WAVEFORM
FIGURE 12. 3A VARIANT ILIM WAVEFORM
FAULT
FAULT
PG
PG
EN
VOUT
VOUT
IIN
IIN
FIGURE 13. 3.6A VARIANT I LIM WAVEFORM w PG
EN
FIGURE 14. LISL6186 TURN-ON w PG
EN
CL=100µF
CL=10µF
CL=100µF
CL=10µF
FIGURE 15. VOUT TURN-ON/RISE TIME vs CLOAD. VIN = 5.5V,
RL = 10Ω
10
FIGURE 16. VOUT TURN-OFF/FALL TIME vs CLOAD. VIN = 5.5V,
RL = 10Ω
FN7698.2
November 3, 2011
ISL6186
Typical Performance Curves
(Continued)
3A VARIANT
3A VARIANT
4A OC
32µs
78A/ms
2A OC
60µs
16A/ms
1.6A/ms
1A OC
137µs
0.5A OC
300µs
ILIMIT = 3.42A
ILOAD = 2.75A
ILOAD = 3.2A
ILIMITED
FIGURE 18. PEAK CURRENT SETTLING TIMES
FIGURE 17. OC RAMP RATE ILIM WAVEFORMS
EN
EN
FAULT
FAULT
VOUT
VOUT
IIN
IIN
3A VARIANT
3A VARIANT
FIGURE 20. TURN-ON INTO MOMENTARY OC
FIGURE 19. TURN-ON INTO AN OVERCURRENT
EN
VOUT
FAULT
PG
VOUT
EN
IIN
IIN
FIGURE 21. OVERCURRENT RETRY FUNCTION
11
FIGURE 22. TURN-OFF w PG
FN7698.2
November 3, 2011
ISL6186
Typical Performance Curves
(Continued)
EN
EN
VOUT
VOUT
IIN = 3.8A
IIN
Rl =1.3W, Cl = 200µF
3.6A VARIANT
FIGURE 24. TURN-ON INTO TO 18WLOAD
FIGURE 23. VIN = 2.4V TURN-ON INTO 0.88Ω
Test Circuits
+
V
10k
10k
FLT
FLT
5V
VIN
OUT
ISL6186
OUTPUT
10µF
EN
5V
VIN
ISL6186
EN
10
OUTPUT
OUT
RL sized
for desired
OC level
RL
10µF
10
rDS(ON) = V/(VOUT/10Ω)
FIGURE 25B. CURRENT LIMITING
FIGURE 25A. rDS(ON)
FIGURE 25. DC TEST CIRCUIT
VIN
EN
0.5VIN
0.5VIN
10k
0V
tON
FLT
5V
0-VIN
VIN
OUT
ISL6186
EN
OUTPUT
10µF
OUTPUT
tOFF
VIN
90%
10%
10
90%
OUTPUT
10%
tR
FIGURE 26A. TRANSIENT TEST CIRCUIT
12
GND
VIN
90%
10%
-GND
tF
FIGURE 27. TRANSIENT WAVEFORM MEASUREMENT POINTS
FN7698.2
November 3, 2011
ISL6186
ISL61863EVAL1Z Schematic and Photo
GND
GND
PG
*
VIN
OUT
EN FLT
NOTE: *PGD Output only available on ISL61863 types
FIGURE 28A. ISL61863EVAL1Z SCHEMATIC
FIGURE 28B. ISL61863EVAL1Z BOARD PHOTO
FIGURE 28. ISL61863EVAL1Z SCHEMATIC and ISL61863EVAL1Z PHOTOGRAPH
Application Information
Using the ISL6186XEVAL1Z Platform
General and Biasing Information
There are three evaluation platforms for the ISL6186 family.
There is one for each package style, each with a different
continuous output current level and representing a mix of enable
polarity and output retry or latch options. The standard available
evaluation board options are listed at the end of the Ordering
Information table, which starts on page 3. Figure 28A illustrates
the schematic for the 10 Ld DFN ISL61863EVAL1Z. Other than
the unique PGOOD output on the ISL61863 types, all the
schematics and functions are the same across all three package
types. Consult the individual package pinouts on page 2 for those
differences.
The evaluation platform is biased and monitored through a few
labeled test points. See Table 1 for test point assignments and
descriptions.
TABLE 1. ISL61863EVAL1Z TEST POINT ASSIGNMENTS
TP NAME
DESCRIPTION
GND
Eval Board and IC Gnd
VIN
Eval Board, IC Bias and Power Input
EN
Enable Switch
OUT
Switch Power Output
PG
Power-Good Output
FLT
Fault Output
for the ISL6186 product variants with 1.5A of continuous load
current rating. The scope shot shows current limiting for ~12ms
before it is turned off and the fault signal is asserted.
Application Considerations
See Table 2 for a listing of the ISL6186XEVAL1Z board
components.
Decoupling VIN
Application considerations for the ISL6186 family are widely
accepted best industry practices. Good decoupling practices on
the VIN pin must be followed by placement close to the IC, with at
least 2.2µF being recommended. For the 3.0 and 3.6A versions,
at least 33µF is recommended to prevent spiking and glitching
on VIN during an OC event. Use good PCB layout practices to
reduce input and output inductance to the ISL6186.
Loading VOUT
When designing with the 3A and 3.6A versions in an
implementation in which the output may be unloaded (open)
while the ISL6186 is turned on, a minimum of 4.7µF of
capacitive loading is recommended to prevent high dv/dt from
unnecessarily activating the surge/ESD circuitry.
Continuous Current Ratings
Upon proper bias of the evaluation platform and correct enabling
of the IC, the ISL6186 will have a nominal VIN/5.1Ω load current
that is below the continuous current rating passing through each
enabled switch. See Figures 14 to 16 for typical ISL6186 turn-on
and turn-off waveforms.
The ISL6186 provides several continuous current rated devices
specified at VIN = 5V: these are the 1.5A, 3A and 3.6A options,
which are capable over the entire temperature extreme. At
VIN = 3.3V, current capability is degraded, and the ISL6186 is
specified at 1.5A and 3A. At VIN = 2.5V, there are no
specifications, but a typical value is provided in the specification
table as guidance for +25°C operation. This degraded capability
is due to the higher rDS(ON) of the FET switch at the lower bias
voltage.
External current loading in excess of the trip current level for the
particular part being evaluated will result in the ISL6186 entering
current limiting mode. Figure 11 illustrates current limiting mode
Enhanced thermal characteristics and an increased number of
bond wires allows the 10 Ld DFN to have a higher current
capability than either the 8 Ld SOIC or 8 Ld DFN.
13
FN7698.2
November 3, 2011
ISL6186
TABLE 2. ISL6186XEVAL1Z BOARD COMPONENT LISTING
COMPONENT
DESIGNATOR
COMPONENT FUNCTION
COMPONENT DESCRIPTION
U1
ISL6186
Intersil, ISL6186
R1
Output Load Resistor
5.1Ω, 5%, 3W
R2
FLT Output Pull-up Resistor
10kΩ, 0805
R3
* only on ISL61863EVAL1Z
PGD Output Pull-up Resistor
10kΩ, 0805
C1
Decoupling Capacitor
2.2µF on ISL61862EVAL1Z
33µF on ISL61861EVAL1Z and
ISL61863EVAL1Z
C2
Load Capacitor
10µF 16V Electrolytic, Radial Lead
14
FN7698.2
November 3, 2011
ISL6186
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
10/17/11
FN7698.2
Changed throughout document ISL61861AEVAL1Z, ISL61862HEVAL1Z, ISL61863LEVAL1Z
To: ISL61861EVAL1Z, ISL61862EVAL1Z , ISL61863EVAL1Z
9/1/11
FN7698.1
Initial release to web.
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: ISL6186
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
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
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For information regarding Intersil Corporation and its products, see www.intersil.com
15
FN7698.2
November 3, 2011
ISL6186
Package Outline Drawing
L8.3x3J
8 LEAD DUAL FLAT NO-LEAD PLASTIC PACKAGE
Rev 0 9/09
2X 1.950
3.00
B
0.15
8
5
3.00
(4X)
6X 0.65
A
1.64 +0.10/ - 0.15
6
PIN 1
INDEX AREA
4
8X 0.30
8X 0.400 ± 0.10
TOP VIEW
6
PIN #1 INDEX AREA
1
4
0.10 M C A B
2.38
+0.10/ - 0.15
BOTTOM VIEW
SEE DETAIL "X"
( 2.38 )
( 1.95)
0.10 C
Max 1.00
C
0.08 C
SIDE VIEW
( 8X 0.60)
(1.64)
( 2.80 )
PIN 1
C
0 . 2 REF
5
(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.
5. Tiebar shown (if present) is a non-functional feature.
6.
16
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.
FN7698.2
November 3, 2011
ISL6186
Package Outline Drawing
L10.3x3
10 LEAD DUAL FLAT PACKAGE (DFN)
Rev 6, 09/09
3.00
6
PIN #1 INDEX AREA
A
B
1
6
PIN 1
INDEX AREA
(4X)
3.00
2.00
8x 0.50
2
10 x 0.23
4
0.10
1.60
TOP VIEW
10x 0.35
BOTTOM VIEW
4
(4X)
0.10 M C A B
0.415
PACKAGE
OUTLINE
0.200
0.23
0.35
(10 x 0.55)
SEE DETAIL "X"
(10x 0.23)
1.00
MAX
0.10 C
BASE PLANE
2.00
0.20
C
SEATING PLANE
0.08 C
SIDE VIEW
(8x 0.50)
C
0.20 REF
5
1.60
0.05
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.
5.
Tiebar shown (if present) is a non-functional feature.
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.
17
FN7698.2
November 3, 2011
ISL6186
Package Outline Drawing
M8.15
8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE
Rev 3, 3/11
DETAIL "A"
1.27 (0.050)
0.40 (0.016)
INDEX
6.20 (0.244)
5.80 (0.228)
AREA
0.50 (0.20)
x 45°
0.25 (0.01)
4.00 (0.157)
3.80 (0.150)
1
2
8°
0°
3
0.25 (0.010)
0.19 (0.008)
SIDE VIEW “B”
TOP VIEW
2.20 (0.087)
SEATING PLANE
5.00 (0.197)
4.80 (0.189)
1.75 (0.069)
1.35 (0.053)
1
8
2
7
0.60 (0.023)
1.27 (0.050)
3
6
4
5
-C-
1.27 (0.050)
0.51(0.020)
0.33(0.013)
SIDE VIEW “A
0.25(0.010)
0.10(0.004)
5.20(0.205)
TYPICAL RECOMMENDED LAND PATTERN
NOTES:
1. Dimensioning and tolerancing per ANSI Y14.5M-1982.
2. Package length 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.
3. Package width does not include interlead flash or protrusions. Interlead
flash and protrusions shall not exceed 0.25mm (0.010 inch) per side.
4. The chamfer on the body is optional. If it is not present, a visual index
feature must be located within the crosshatched area.
5. Terminal numbers are shown for reference only.
6. The lead width 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).
7. Controlling dimension: MILLIMETER. Converted inch dimensions are not
necessarily exact.
8. This outline conforms to JEDEC publication MS-012-AA ISSUE C.
18
FN7698.2
November 3, 2011
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