Power Supply User's Manual

MB39A104
22
■
APPLICATION EXAMPLE
A B
B
+ +
A
+
+
R10R11
R9
68 kΩ
220
kΩ
C16
0.1
µF
C12
1000 pF
C14
1000 pF
C21
1000 pF
150 kΩ
56 kΩ
R15R16
R14
68 kΩ
220
kΩ
R13
C17
0.1
µF
13 kΩ
100 kΩ
R8
VIN
(7 V to 19 V)
R1
24 kΩ
C1 100 pF
C20 0.1 µF
C10 0.1 µF
R5
C6 10 µF
C8 82 µF
C7 10 µF
C11
0.1 µF
2.7 kΩ
Q2 L2
V
O2
(3.3 V)
15 µF
D2
R4
C2 10 µF
C4 82 µF
C3 10 µF
2.7 kΩ
Q1 L1
V
O1
(5.0 V)
15 µF
D1
−
+ +
−
+ +
−
+ +
−
+ +
−
+ +
−
+
−
+
10
VREF
VREF
11
9 6
15 14 16 19
8
−INE1
CS1
FB1
DTC1
−INE2
CS2
FB2
DTC2
CSCP
12 13
1817
RT CT
GNDVREF
24
7
23
2
20 21
22
5 4
3 1
CTL VCC GNDO
VH
ILIM2 VS2
OUT2
ILIM1 VS1
OUT1 VCCO
10 µA
1.24 V
1.24 V
3.1 V
SCP Comp.
SCP
Logic
UVLO
OSC
VREF
Bias
Voltage
Current
Protection
Logic
Current
Protection
Logic
I
O = 200 mA
at VCCO = 12 V
IO = 200 mA at VCCO = 12 V
VR1
VH
V
CC − 5 V
1.24 V
2.5 V 1.5 V
5.0 V
bias
Power
ON/OFF
CTL
10 µA
Pch
Drive2
Pch
Drive1
PWM Comp.1
PWM Comp.2
Error Amp2
Error Amp1
CH1
CH2
Step- down
Step- down
L priority
L priority
L priority
L priority
H priority
accuracy
± 1%
H: UVLO release
H: at OCP
H: at SCP
Charging current (1 A)
Error Amp Reference
Error Amp Power Supply
CH1 ON/OFF signal (Hiz : ON, L : OFF) CH2 ON/OFF signal (Hiz : ON, L : OFF)
H : ON (Power ON) L : OFF (Standby mode) V
TH = 1.4 V