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BA9700 Datasheet(PDF) 4 Page - Rohm

Part # BA9700
Description  Switching regulator for DC / DC Converters
Download  7 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BA9700 Datasheet(HTML) 4 Page - Rohm

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BA9700A / BA9700AF / BA9700AFV
Regulator ICs
L1: RCH-875 220K (Sumida Electronics)
Fig.3 Inverting converter
330
R7
330
R6
Q1 2SB1009
L1
220
µH
470
µ
VOUT
C4, C5
C6
470
µ
×2
RB100A
D1
GND
R8 10k
C7 1000p
47k
R9
SW1
Vref
2.57V
30k
30k
1.29V
3
10
8
11
13
14
12
4
9
6
5
2
Triangle
Oscillator
Voltage
Regulator
1
7
ERROR AMP
C1
680p
0.047
µ
C2
7.5k
R3
6.8k
R1
33k
GND
VIN
PWM COMPARATOR
C3 1
µ
R5 39k
R4 22k
R2
+
L1: RCH-875 221K (Sumida Electronics)
Fig.4 Step-up converter
R6
470
R9
470
R7
470
R8 68
Q1
Q2
2SB1009
L1
22
µH
100
µ
12V
VOUT
C7
C5, C6
470
µ
×2
RB100A
D1
GND
R1010k
C8 1000p
47k
R11
SW1
Vref
2.57V
30k
30k
1.29V
11
13
14
10
8
12
4
2
Triangle
Oscillator
Voltage
Regulator
+
1
7
ERROR AMP
C1
680p
0.047
µ
C2
R3
7.5k
R2
4.7k
R1
39k
GND
VIN
PWM COMPARATOR
C4 1
µ
R5 39k
R4 20k
2SD1380
9
6
5
3


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