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ISL6173_06 Datasheet(数据表) 4 Page - Intersil Corporation

部件型号  ISL6173
说明  Dual Low Voltage Hot Swap Controller
下载  20 Pages
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制造商  INTERSIL [Intersil Corporation]
网页  http://www.intersil.com/cda/home
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ISL6173 Datasheet(HTML) 4 Page - Intersil Corporation

 
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4
FN9186.3
January 3, 2006
11
CPQ-
Charge Pump Capacitor
Low Side
Flying cap lowside.
12
BIAS
Chip Bias Voltage
Provides IC Bias. Should be 2V to 4V for IC to function normally. This pin can be powered from a
supply voltage that is not being controlled. It is preferable to use 3.3V even if the channels being
controlled are 2.5V or lower because more gate drive voltage will be available to the MOSFETs.
13
CPQ+
Charge Pump Capacitor
High Side
Flying cap highside. Use of 0.1µF for 2.5V bias and 0.022µF for 3.3V bias is recommended.
14
CPVDD
Charge Pump Output
This is the voltage used for some internal pullups and bias. Use of 0.47µF (minimum) is
recommended.
15
CT2
Timer Capacitor
Same function as pin 7
16
PG2
Power Good Output
Same function as pin 6
17
FLT2
Fault Output
Same as pin 5
18
GT2
Gate Drive Output
Same as pin 4
19
SS2
Soft-Start Duration Set
Input
Same as pin 3
20
VO2
Output Voltage 2
Same as pin 2
21
SNS2
Current Sense Input
Same as pin 1
22
VS2
Current Sense
Reference
Voltage input for one of the two voltages. Provides a 20µA current source for the ISET series resistor
which sets the voltage to which the sense resistor IR drop is compared.
23
UV2
Undervoltage Monitor
Input
This pin is one of the two inputs to the undervoltage comparator. The other input is the 633mV
reference. It is meant to sense the output voltage through a resistor divider. If the output voltage
drops so that the voltage on the UV pin goes below 633mV, PG2 is deasserted.
24
EN2
Enable
This is an active low input. When asserted (pulled low), the SS and gate drive are released and the
output voltage gets enabled. When deasserted (pulled high or left floating), the reverse happens.
25
OCREF
Ref. Current Adj.
Allows adjustment of the reference current through RSET and the internal current regulation set
resistor, thus setting the thresholds for CR, OC and WOC.
26
EN1
Enable Input
Same as pin 24
27
UV1
Undervoltage Monitor
Input
Same as pin 23
28
VS1
Current Sense
Reference
Same as pin 22
Pin Descriptions (Continued)
PIN
NAME
FUNCTION
DESCRIPTION
ISL6173




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