LTC4217 Linear Technology, LTC4217 Datasheet - Page 8

• Manufacturer Part Number: LTC4217
• Description: 2A Integrated Hot Swap Controller
• Manufacturer: Linear Technology

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LTC4217
FUNCTIONAL DIAGRAM
TIMER
8
V
UV
OV
DD
140k
224k
20k
20k
V
V
DD
DD
*LTC4217-12 (DFN) ONLY
*
*
*
*
1.235V
1.235V
0.62V
2.73V
V
DD
INTERNAL 7.5mΩ
SENSE RESISTOR
+–
+
–
+
–
+
–
–
+
UVLO1
RST
UV
OV
–
+
CM
CS
(EXPOSED PAD)
1.235V
SENSE
0.2V
INTERNAL 20mΩ
AND GATE
+
–
+
–
MOSFET
CHARGE
DRIVER
PUMP
TM1
TM2
OUT
GND
LOGIC
INRUSH
GATE
0.3V/ms
3.1V
GEN
V
DD
100μA
2μA
INTV
CC
TEMPERATURE
0.6V POSITIVE
FOLDBACK
PG
COEFFICIENT
UVLO2
REFERENCE
+
–
–
+
CLAMP
0.6V
1.235V
2.65V
X1
20k
150k
20k
OUT
4217 BD
*
*
OUT
I
I
FB
PG
FLT
INTV
MON
SET
4217fb
CC