B1077AS-4R7N AD [Analog Devices], B1077AS-4R7N Datasheet - Page 24

• Manufacturer Part Number: B1077AS-4R7N
• Description: 1.2 A, 20 V, 700 kHz/1.4 MHz, Nonsynchronous Step-Down Regulator
• Manufacturer: AD [Analog Devices]

ADP2300/ADP2301
TYPICAL APPLICATION CIRCUITS
Figure 51. ADP2300—700 kHz Typical Application, V
Figure 52. ADP2300—700 kHz Typical Application, V
Figure 53. ADP2300—700 kHz Typical Application, V
10µF
10µF
25V
25V
C1
V
C1
V
IN
IN
V
= 12V
IN
= 12V
= 12V
OFF
OFF
100kΩ
100kΩ
OFF
C1
10µF
25V
100kΩ
ON
5%
5%
ON
R3
R3
ON
5%
R3
VIN
EN
VIN
EN
VIN
EN
ADP2300
ADP2300
(700kHz)
(700kHz)
ADP2300
(700kHz)
GND
GND
GND
Rev. 0 | Page 24 of 28
BST
BST
SW
FB
SW
FB
BST
SW
FB
IN
IN
IN
= 12 V, V
= 12 V, V
= 12 V, V
C4
0.1µF
6.3V
D1
B230A
C4
0.1µF
6.3V
B230A
D1
C3
0.1µF
6.3V
D1
B230A
OUT
OUT
OUT
6.8µH
2.0A
6.8µH
= 1.2 V/1.2 A with External Enabling
= 1.8 V/1.2 A with External Enabling
= 2.5 V/1.2 A with External Enabling
L1
2.0A
L1
10µH
2.0A
L1
4.99kΩ
10.2kΩ
12.7kΩ
10kΩ
21.5kΩ
10.2kΩ
1%
1%
1%
R1
R2
R2
1%
R1
1%
1%
R1
R2
V
OUT
V
V
C2
22µF
6.3V
OUT
C2
22µF
6.3V
OUT
1.2A
1.2A
= 2.5V
1.2A
= 1.2V
= 1.8V
C2
22µF
6.3V
C3
22µF
6.3V
C3
22µF
6.3V