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AN8049FHN Datasheet(PDF) 2 Page - Panasonic Semiconductor

Part No. AN8049FHN
Description  1.8-volt 3-channel step-up, step-down, and polarity inverting DC-DC converter control IC
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Maker  PANASONIC [Panasonic Semiconductor]
Homepage  http://www.panasonic.com/industrial/
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AN8049FHN Datasheet(HTML) 2 Page - Panasonic Semiconductor

 
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AN8049FHN
Voltage Regulators
2
s Pin Descriptions
Pin No.
Description
1
DT2
2
DT1
3
CTL3
4
CTL2
5
CTL1
6
Off
7VREF
8
RB2
9
RB1
10
OUT1
11
OUT2
12
GND
Pin No.
Description
13
OUT3
14
VCC
15
OSC
16
IN
+3
17
IN
−3
18
FB3
19
IN
−2
20
FB2
21
IN
−1
22
FB1
23
S.C.P.
24
DT3
s Block Diagram
20 k
1.26 V
CTL3
DT3
IN
−3 17
IN
+3
FB3
18
S.C.P.
RB1
OUT1
OUT3
RB2
OUT2
GND
23
16
3
24
1.26 V
Error
amplifier 3
1.26 V
1.26 V
1.1 mA
1.1 mA
1.1 mA
0.9 V
Error
amplifier 1
Error
amplifier 2
VREF
VCC
50 k
VCC
On/off
control
Reference voltage
supply VREF
Triangular wave generator
0.7 V
0.3 V
1.26 V
(Allowance:
±1%)
S.C.P. comp.
Latch
U.V.L.O.
R
S
Q
1.26 V
1.26 V
20 k
PWM2
PWM3
PWM1
VREF
50 k
50 k
9
10
VCC
11
8
13
12


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