MB39A115 Datasheet, PDF (30/42 Pages) Fujitsu Component Limited. – 5 ch DC/DC Converter IC with Synchronous Rectification

MB39A115
■ I/O EQUIVALENT CIRCUIT
• Reference voltage block
VCC 5
ESD
protection
element
1.23 V
+
−
79 kΩ
124 kΩ
GND 14
• Soft-start block
• Control block
ESD
protection
element
11 VREF
CTL 6
53 kΩ
ESD
protection
element
278 kΩ
GND
• Short-circuit detection block
VREF
(2.0 V)
CSX
VREF
(2.0 V)
2 kΩ
15 CSCP
• Channel control block (ch.3 to ch.5)
VCC
CTLX
86 kΩ
223 kΩ
GND
• Short-circuit detection
comparator block
VCC
VREF
(2.0 V)
−INS 10
100 kΩ
(1 V)
GND
GND
GND
• Triangular wave oscillator block (RT)
VREF
(2.0 V)
0.64 V +
−
12 RT
• Triangular wave oscillator block (CT)
VREF
(2.0 V)
CT 13
GND
GND
• Error amplifier block (ch.1 to ch.5)
VCC
VREF
(2.0 V)
−INEX
CSX
FBX
1.0 V (ch.1)
1.23 V (ch.2 to ch.5)
GND
X : Each cannel No.
(Continued)
30