ISL6160CB Intersil, ISL6160CB Datasheet - Page 5

• Manufacturer Part Number: ISL6160CB
• Description: IC CTRLR BULK/AUXILIARY 14-SOIC
• Manufacturer: Intersil

Specifications of ISL6160CB

• Applications: -48V Dist Power Systems, AdvancedTCA ® Systems
• Fet Type: N-Channel
• Number Of Outputs: 2
• Internal Switch(s): No
• Voltage - Supply: 4.5 V ~ 5.5 V, 10 V ~ 14 V
• Current - Supply: 3mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Delay Time - On: -
• Delay Time - Off: -

ISL6160 Description and Operation
The ISL6160 is the first power supply sequencer for the
emerging InfiniBand module (IM) hot swap application. This IC
controls both the +12V VB(ulk) and +5V VA(ux) supplies
providing soft start during hot insertion and overcurrent (OC)
protection during operation.
For VB control and protection, the ISL6160 features include an
accurate current detecting comparator, current limiting for the
range of both 25W and 50W capable power ports, a current
regulated time delay to latch off and soft start turn-on ramp.
These features are all programmable with a minimum of
external passive components. The ISL6160 also includes
severe overcurrent protection that immediately shuts down the
MOSFET switch should there be a shorted IM load.
The VB_ON pin provides on-off control of the external VB
switch once VB_IN > 9V. Driving this pin high causes the gate
pin to charge the external gate capacitor with a 10uA current
setting the soft start ramp rate. Large capacitive loads can thus
be safely turned on with no inrush current spiking nor disruption
of the voltage supply rail.
Electrical Specifications
CTIM PARAMETERS
C
C
Current Limit Time-Out Threshold Voltage
+5V AUXILIARY SUPPLY CONTROL
VA Integrated Switch On Resistance
Disabled Output Voltage
V
Slow V
Fast V
CURRENT CONTROL
Current Limit
OC Regulation Settling Time
Severe OC Regulation Settling Time
Over Current Latch-off Time
I/O PARAMETERS
Fault Output Voltage
ENABLE High Threshold
ENABLE Low Threshold
ENABLE Input Current
BIAS PARAMETERS
Enabled VA_Iin Current
Disabled VA_Iin Current
Undervoltage Lockout Threshold
UV Hysteresis
OUT
TIM
TIM
Charging Current
Fault Pull-Up Current
OUT
Rising Rate
OUT
turn-off rate
turn-off rate
PARAMETER
5
Nominal VB = +12V, VA = +5V, T
C
C
Tsett_socr
C
V
SYMBOL
Toff_svout
Toff_fvout
Tsett_ocr
TIM
TIM
t_vout_rt
Vfault_hi
r
Ven_vih
OUT_DIS
t
UV
Ven_vil
V
TIM
I
DS(ON)
I
OC_loff
dis_VA
en_VA
Ien_i
UVLO
Ilim
_ichg0
_ichg6
HYS
_Vth
V
V
CTIM Voltage
V
T
V
R
R
R
R
R
I
V
V
ENABLE = 0V to 5V, V
Switches Closed, VA_Out = OPEN, T
Switches Open, VA_Out = OPEN
VIN Rising, Switch Enabled
OUT
A
CTIM
CTIM
IN
IN
IN
IN
L
L
L
L
L
= 5Ω, C
< 1Ω, C
= T
ISL6160
= 10Ω, C
= 10Ω, C
= 10Ω, C
= 5V, I
= 5V, Switch Disabled, No Load
= 5.5V
= 4.5V
A
= 10mA
J
= 0V
= 6V
= T
= 85
OUT
L
L
J
= 0.1µF to Within 10% of CR
= 0.1µF to Within 10% of CR
L
L
L
o
= -40
TEST CONDITIONS
C
= 0.1µF, 10%-90%
= 0.1µF, 90%-10%
= 0.1µF, 90%-10%
The VB load current passes through an external current sense
resistor. When the voltage across the sense resistor exceeds
the user programmed ISET voltage threshold, the controller
enters current regulation (CR). The regulated current level is
fixed by the R
R
CR threshold voltage.
NOTE: Nominal Vth = R
During CR, the CTIM pin starts charging the time-out capacitor
with a 20µA current source and the controller enters the delay
time to latch-off period. This feature allows transient currents
that exceed the designed limit to pass without immediately
= 0.4A, T
ISET
RESISTOR
o
3.48kΩ
C - 85
R
1.0kΩ
2.8kΩ
5.6kΩ
ISET
IN
programming resistor value and the resulting nominal
A
= 5V, T
o
= T
C, Unless Otherwise Specified (Continued)
J
ISET
= 25
J
NOMINAL
> 25
OC Vth
112mV
o
20mV
56mV
70mV
and R
C
J
o
>0
C
ISET
o
C
SENSE
TABLE 1.
x 20µA.
NOMINAL REGULATION LEVEL
CURRENT (A)
resistors. See Table 1 for
MIN
0.75
-0.5
1.3
2.0
1.7
16
50
5
-
-
-
-
-
-
-
-
-
-
-
-
-
2.8
3.5
5.6
(R
1
SENSE
0.125
0.160
TYP
2.25
300
100
120
100
1.8
1.5
20
12
8
8
8
4
1
1
-
-
-
-
= 0.020Ω)
POWER (W)
0.150
0.200
MAX
1.25
450
200
2.3
0.3
0.8
0.5
2.5
23
11
5
-
-
-
-
-
-
-
33.6
67.2
12
42
UNIT
V/mS
V/mS
V/uS
mA
mV
mV
ms
ms
µA
µA
µA
µA
µs
V
Ω
Ω
S
A
V
V
V
V