31
NW-HD1
IC9001
LTC3441EDE#TR
FB
SHUTDOWN
1
SHDN/SS
12
VC
2
GND
11
VIN
3
PGND
10
SWD
–0.8A
4A
2.4V
VCC
INTERNAL
1.22V
3.2A
SWC
SWB
SWA
REVERSE CURRENT
LIMIT
PVIN
4
SW1
9
8 VOUT
SLEEP
5
SW2
MODE/SYNC
6
PGND
7
BURST MODE
OPERATION
CONTROL
5
µ
s DELAY
1/2
EEEOR
AMP
PWM
COMPARATORS
SUPPLY
CURRENT
LIMIT
AVERAGE
CURRENT
LIMIT
UVLO
1MHz
OSC
SYNC
GATE DRIVERS
AND
ANTICTOSS
CONDUCTION
PWM
LOGIC
AND
OUTPUT
PHASING
THERMAL
SHUTDOWN
IC9003
TPS62200DBVR
VI 1
SW
5
GND 2
EN 3
FB
4
CONTROL
LIGIC
DRIVER
SHOOT-THROUGH
LOGIC
REF
REF
SKIP COMPARATOR
LOAD COMPARATOR
COMPARATOR
CURRENT LIMIT
COMPARATOR
UNDERVOLTAGE
LOCKOUT
BIAS SUPPLY
SOFT START
1 MHz
OSCILLATOR
SAWTOOTH
GENERATOR
COMPENSATION
VREF=0.5V
V (COMP)
V
I
GM
Summary of Contents for Walkman NW-HD1
Page 67: ...19 NW HD1 MEMO ...