FUJITSU MB39A104 - Manual (Page 21)

MB39A104
21
■ I/O EQUIVALENT CIRCUIT
7
18
+
−
1.24 V
17 VREF
VCC
GND
77.8
k Ω
24.8
k Ω
ESD
protection
element
ESD
protection
element
ESD
protection
element
CTL
GND
72
k Ω
104
k Ω
24
CSX
VCC
GND
VREF
(5.0 V)
RT
GND
(3.1 V)
12
+
− 1.35 V
VCC
CSCP
2 k Ω
GND
VREF
(5.0 V)
8 CT
GND
(3.1 V)
13
−INEX CSX
GND
VCC
VREF
(5.0 V)
FBX 1.24 V
ILIMX
GND
GNDO
VCCO
VSX
VCC
DTCX
GND
VCC
FBX CT
VCC
GND
VCCO
VH
GNDO
2
X : Each channel No.
〈〈Reference voltage block〉〉 〈〈Control block〉〉 〈〈Soft-start block〉〉
〈〈Short-circuit detection block〉〉
〈〈Triangular wave oscillator
block (RT)
〉〉
〈〈Triangular wave oscillator
(CT) block
〉〉
〈〈Error amplifier block (CH1, CH2) 〉〉
〈〈Overcurrent protection circuit block〉〉
〈〈PWM comparator
block (CH1, CH2)
〉〉
〈〈Output block (CH1, CH2) 〉〉
O
GNDO
VCCO 1
23
VH
〈〈Bias voltage block〉〉