Sony DP-RF6000 Service Manual page 13

• IC BLOCK DIAGRAMS
IC305 XC6365A253MR
1
EXT/
VDD 2
3
GND
IC4002 XC9201D09AKR
1
EXT
ISEN
2
LIMITTER COMP.
3
V IN
CE/SS 4
PWM
COMPENSATION
COMPARATOR
+
BUFFER,
DRIVER
-
RAMP WAVE
GENERATOR
OSC
EXT TIMMING
CONTROL
LOGIC
PWM
INTERNAL
VOLTAGE
2.0V
REGULATOR
TO INTERNAL
CIRCUIT
CE,UVLO
CHIP ENABLE,
TO INTERNAL
SOFT START UP, CIRCUIT
U.V.L.O.
PHASE
ERROR AMP .
+
-
VREF WITH
PWM/PFM
SOFT START,
CONTROLLER
CE
CURRENT
LIMIT
PROTECTION
MIX
LERR
SAMPLING
0.9V
VREF GENERATOR
DP-RF6000
5 V OUT
4
CE
8 V SS
7 V OUT
R1
VERR
R2
6 CC/GAIN
RAMP WAVE,
INTERNAL CLK
GENERATOR
5
CLK
13