Datasheet

ADP2380 Data Sheet
Rev. 0 | Page 26 of 28
TYPICAL APPLICATIONS CIRCUITS
09939-039
ADP2380
1
PVIN
PVIN
UVLO
PGOOD
RT
SYNC
EN/SS
COMP
BST
SW
SW
LD
VREG
PGND
GND
FB
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
R
TOP
10kΩ
1%
R
BOT
10kΩ
1%
C
SS
22nF
C
IN
10µF
25V
C
OUT
470µF
6.3V
V
OUT
= 1.2V
C
BST
0.1µF
C
VREG
1µF
L1
2.2µH
V
IN
= 12V
C
CP
68pF
C
C
2.2nF
R
C
68kΩ
M1
FDS6298
R
OSC
100kΩ
Figure 39. Compensation Network Between COMP and GND, V
IN
= 12 V, V
OUT
= 1.2 V, I
OUT
= 4 A, f
SW
= 500 kHz
09939-040
ADP2380
1
PVIN
PVIN
UVLO
PGOOD
RT
SYNC
EN/SS
COMP
BST
SW
SW
LD
VREG
PGND
GND
FB
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
R
TOP
20kΩ
1%
R
BOT
10kΩ
1%
C
SS
22nF
C
IN
10µF
25V
C
OUT1
100µF
6.3V
C
OUT2
100µF
6.3V
V
OUT
= 1.8V
C
BST
0.1µF
C
VREG
1µF
L1
2.2µH
V
IN
= 12V
C
C_EA
470pF
C
CP_EA
2.2pF
R
C_EA
110kΩ
M1
FDS6298
R1
7.32kΩ
1%
R2
1kΩ
1%
R
OSC
100kΩ
Figure 40. Programming Input Voltage UVLO Rising Threshold at 10 V, V
IN
= 12 V, V
OUT
= 1.8 V, I
OUT
= 4 A, f
SW
= 500 kHz
09939-041
ADP2380
1
PVIN
PVIN
UVLO
PGOOD
RT
SYNC
EN/SS
COMP
BST
SW
SW
LD
VREG
PGND
GND
FB
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
R
OSC
82kΩ
R
TOP
22kΩ
1%
R
SOT
3kΩ
1%
C
IN
10µF
25V
C
OUT
100µF
6.3V
V
OUT
= 5V
C
BST
0.1µF
C
VREG
1µF
L1
4.7µH
V
IN
= 12V
C
C_EA
820pF
C
CP_EA
1pF
R
C_EA
100kΩ
M1
FDS6298
Figure 41. Using Internal Soft Start, Programming Switching Frequency at 600 kHz, V
IN
= 12 V, V
OUT
= 5 V, I
OUT
= 4 A, f
SW
= 600 kHz