MB39A108 Просмотр технического описания (PDF) - Fujitsu
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MB39A108 Datasheet PDF : 45 Pages
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MB39A108
■ BLOCK DIAGRAM
−INE1 37
CS1 38
L
VREF priority
10 µA
−
++
Error
Amp1
FB1 36
1.0 V
Threshold voltage
1.0 V ± 1%
PWM
+ Comp.1
−
<<CH1>>
Io = 130 mA
at VCCO = 4 V
Drive1-1
P-ch
Drive1-2
N-ch
Dead Time
(td = 50 ns)
Io = 130 mA
at VCCO = 4 V
−INE2 2
CS2 1
FB2 3
DTC2 4
L
VREF priority Error
10 µA
− Amp2
++
1.23 V
Threshold voltage
1.23 V ± 1%
Max Duty VREF
90% ± 5%
L
priority
PWM
++ Comp.2
−
<<CH2>>
Drive2
P-ch
Io = 130 mA
at VCCO = 4 V
35 VCCO
34 OUT1-1
33 OUT1-2
32 OUT2
−INE3 18
CS3 19
FB3 17
DTC3 16
L
VREF priority Error
1 µA
− Amp3
++
1.23 V
L
Max Duty VREF priority
90% ± 5%
PWM
Comp.3
++
−
<<CH3>>
Drive3
P-ch
Threshold voltage
1.23 V ± 1%
Io = 130 mA
at VCCO = 4 V
31 OUT3
−INE4 21
CS4 20
FB4 22
DTC4 23
L
VREF priority Error
1 µA
− Amp4
++
1.23 V
Max Duty VREF
90% ± 5%
L
priority
PWM
Comp.4
++
−
<<CH4>>
Drive4
N-ch
Threshold voltage
1.23 V ± 1%
Io = 130 mA
at VCCO = 4 V
30 OUT4
−INE5 26
CS5 27
L
VREF priority Error
1 µA
− Amp5
++
FB5 25
DTC5 24
−INS 10
Short-circuit detection signal
(L: at short-circuit)
1.23 V
Threshold voltage
1.23 V ± 1%
100
VREF
kΩ
−
SCP
Comp.
1V +
L
Max Duty VREF priority
90% ± 5%
PWM
++ Comp.5
−
SCP
H: at SCP
<<CH5>>
Drive5
N-ch
Io = 130 mA
at VCCO = 4 V
CSCP 15
CTL3 7
CTL4 8
CTL5 9
0.9 V
CH 0.4 V
CTL
OSC
12 13
RT CT
H: release UVLO
Error Amp power supply
SCP Comp. power supply
UVLO2
UVLO1
Error Amp reference
bias 1.23 V
VREF
Power
VR ON/OFF
CTL
2.0 V
11
Accuracy
± 0.8%
14
VREF
GND
29 OUT5
28 GNDO
5 VCC
6 CTL
6
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