MB39A119 Datasheet, PDF (32/53 Pages) Fujitsu Component Limited. – DC/DC Converter IC of Synchronous Rectification for charging Li-ion battery

MB39A119
(Continued)
• Current detection amplifier block (Current Amp1)
• Current detection amplifier block (Current Amp2)
VCC
VREF
VCC
VREF
+INC1 3
GND
2 −INC1
+INC2 10
100 kΩ
−INE1
80 kΩ
20 kΩ
GND
11 ^−INC2
9 OUTC2
80 kΩ
20 kΩ
• PWM comparator
block
VREF
• Output block
(Main side)
28 CB
• Output block (synchronous
rectification side)
VB
27 OUT-1
24 _OUT-2
• Invalidity current
prevention block
16 OUTD
FB123
CTL
GND
GND
26 VS
GND
23 PGND
GND
• Constant voltage control state detection
block
VREF
(5.0 V)
• AC adapter voltage detection block
VREF
(5.0 V)
FB123
6 CVM
ACIN 4
5 ACOK
22 XACOK
GND
GND
32