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BA9700 Datasheet(PDF) 3 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) 3 Page - Rohm

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BA9700A / BA9700AF / BA9700AFV
Regulator ICs
!
!
!
!Timing chart
ERR. AMP
OUTPUT
DEAD - TIME
H
L
PWM. COMP
OUTPUT
H
L
OUTPUT TR.
COLLECTOR
Fig.1
!
!
!
!Application examples
L1: RCH-875 121K (Sumida Electronics)
Fig.2 Step-down converter
R6
560
R7
560
N.C.
N.C.
Q1 2SB1009
L1
120
µH
470
µ
5V
VOUT
C5, C6
C8
470
µF
×2
RB100A
D1
GND
R815k
C9 1000p
47k
R9
SW1
Vref
2.57V
30k
30k
1.29V
Triangle
Oscillator
Voltage
Regulator
+
ERROR AMP
C1
680p
0.047
µ
C2
R3
7.5k
R2
15k
R1
43k
GND
VIN
PWM COMPARATOR
C4 1
µ
R5 20k
R4 15k
3
10
8
11
13
14
12
4
9
6
5
2
1
7
+


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