XC9101
Series
■Block Diagram
EXT timming
controll
logic
Current
Limit
Protection
V
SS
EXT
V
OUT
R1
ISEN
Limitter comp.
PWM
MIX
CC/GAIN
Verr
R2
V
IN
4
CE/SS
Internal
Voltage
Regulator
2.0V
to internal
circuit
Sampling
CE,UVLO
to internal
circuit
Ierr
Ramp Wave,
Internal CLK
generator
Chip Enable,
Soft Start up,
U.V.L.O.
CLK
Vref generator
0.9V
■Absolute Maximum Ratings
PARAMETER
EXT Pin Voltage
Isen Pin Voltage
V
IN
Pin Voltage
CE/SS Pin Voltage
CLK Pin Voltage
CC/GAIN Pin Voltage
V
OUT
/FB Pin Voltage
EXT Pin Current
Continuous Total Power Dissipation
Operating Ambient Temperature
Storage Temperature
SYMBOL
V
EXT
VIsen
V
IN
V
CE
V
CLK
V
CC
V
OUT
/FB
I
EXT
Pd
Topr
Tstg
RATINGS
−0.3∼V
DD
+0.3
−0.3∼+22
−0.3∼+22
−0.3∼+22
−0.3∼V
DD
+0.3
−0.3∼V
DD
+0.3
−0.3∼+22
±100
150
−40∼+85
−55∼+125
Ta=25℃
UNITS
V
V
V
V
V
V
V
mA
mW
℃
℃
390