Datasheet

Data Sheet ADP1850
Rev. A | Page 27 of 32
TYPICAL OPERATING CIRCUITS
VCCO
VCCO
187kΩ
EN1
SYNC
100nF
TO
VIN
187kΩ
VIN
VCCO
VDL
AGND
FREQ
EN2
SW1
DH1
PGND1
DL1
DL2
PGND2
DH2
SW2
TRK2
FB2
COMP2
RAMP2
SS2
PGOOD2
ILIM2
BST2
TRK
1
FB
1
COMP1
RAMP1
SS1
PGOOD1
ILIM1
BST1
ADP1850
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
32 31 30 29 28 27 26 25
9 10 11 12 13 14 15 16
42.2kΩ
47pF
330pF
23.2kΩ
47pF
560pF
100nF
22pF
1µF
0.1µF
0.1µF
1µF
1µF
2.1kΩ
L2
M4
M3
22kΩ
COUT
22
COUT
21
CIN
2
V
OUT2
1.8V
14A
V
IN
2.1kΩ
L1
M2
M1
22kΩ
COUT
12
COUT
11
CIN
1
V
OUT1
3.3V
14A
V
IN
= 10V TO 18V
20kΩ10kΩ
CIN
1
, CIN
2
: 10µF/X7R/25V/1210 × 2, GRM32DR71E106KA12, MURATA
COUT
11
, COUT
21
: 330µF/6.3V/POSCAP × 2, 6TPF330M9L, SANYO
COUT
12
, COUT
22
: 22µF/X5R/0805/6.3V × 3, GRM21BR60J226ME39, MURATA
f
SW
= 600kHz
CIN: 150µF/20V, OS-CON, 20SEP150M, SANYO
L1, L2: 1.2µH, WURTH ELEKTRONIK, 744325120
M1, M3: BSC080N03LS
M2, M4: BSC030N03LS
45.3kΩ
10kΩ
2Ω
2Ω
CIN
22pF
09440-044
Figure 44. Typical 14 A Operating Circuit