
18
TA-SB500WR
IC104 TK11225CMCL-G
IC105 PST3629NR
IC110, 112 CXD9774M
IC113 TK11118CSCL-G
1
2
3
6
4
CONT
GND
NP
VIN
5
GND
VOUT
CONTROL
CIRCUIT
BANDGAP
REFERENCE
CONSTANT
CURRENT
SOURCE
OVER HEAT &
OVER CURRENT
PROTECT
VDD 2
OUT 1
GND 3
+
–
VREF
CD
5
NC
4
RESET 4
GND 1
GND 3
PWM BP 2
DREG RTN 5
GND 16
GND 18
PWM
RECEIVER
TIMING
CONTROL
&
PROTECTION
DIGITAL
REGULATOR
DVDD DREG
DREG
DGND
PWM AP 17
PWM
RECEIVER
DGND
DREG
GATE
DRIVE
GVDD B
35
GVDD B
36
BST B
33
PVDD B
32
PVDD B
31
OUT B
30
OUT B
29
GND
28
GND
34
GATE
DRIVE
OCH
OCL
PROTECTION
DREG
GATE
DRIVE
GVDD A
20
GVDD A
19
BST A
22
PVDD A
23
PVDD A
24
OUT A
25
OUT A
26
GND
27
GND
21
GATE
DRIVE
OCH
OCL
GVDD
GVDD
CONTROL
CIRCUIT
BANDGAP
REFERENCE
+
–
OVER HEAT &
OVER CURRENT
PROTECTION
1
VCONT
3
NP
2
GND
4
VOUT
5
VIN
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