Sony ICD-UX71 - Additional IC Block Diagrams

ICD-UX71/UX71F/UX81/UX81F/UX91F
23
IC2003 XC9128D45CDR (AUDIO Board (2/3))
IC2005 XC9226A18CMR (AUDIO Board (2/3))
5
PWM
COMPARATOR
1
ERROR
AMP
BUFFER
DRIVER
FO
3
BAT
4
EN
PGND
2
LX
10
9
VOUT
MODE
8
FB
7
AGND
6
AEN
PWM/PFM
CONTROLLER/LOGIC
CURRENT SENSE,
LIMIT,PFM
PHASE
COMPENATION
VREF WITH
SOFT START
RAMP WAVE
GENERATOR
EN.
THERMAL
SHUTDOWN
CURRENT LIMIT,
THERMAL,
SOFT START,
EN
OSC
MODE
1
VIN
2
VSS
3
CE/MODE
5
LX
CURRENT
FEEDBACK
CURRENT
LIMIT
SYNC
BUFFER DRIVE
PHASE
COMPENSATION
PWM/PFM
SELECTOR
RAMP WAVE
GENERATOR
OSC
CE/MODE
CONTROL
LOGIC
LOGIC
ERROR
AMP
U.V.L.0
VREF WITH
SOFT START,
CE
R2
R1
4
VOUT
R3
R4