Datasheet

EVAL-ADP1828HC
Rev. 0 | Page 9 of 12
EVALUATION BOARD SCHEMATIC
06903-012
Note: Vout TP 1 and Vout TP GND 2 are for scope probe connection when taking ripple measurment.
The test points are directly connected to the pads of C3, to ensure cleanest measurment.
FREQ
1
SYN C
2
EN
3
IN
4
VREG
5
GN D
6
CO M P
7
FB
8
TRK
9
SS
10
PV
12
PGOOD
11
DL
13
PGND
14
CSL
15
SW
16
DH
17
BST
18
CL K SET
19
CL K OU T
20
U1 ADP 1828
1
J1 2
GN D
1
J8
VIN= 6V- 18V
1
J1 4
GN D
1
J1 3
VOUT= 1.8 V
+
C1 1
180UF 20V
+
C1 2
180UF 20V
+
C5
1000UF 2.5V
+
C1 3
not fitted
+
C4
1000UF 2.5V
+
C1 4
+
C1 5
+
C1 6
C3
47UF 6.3V
L1
0.82uH
Q1(BSC080N03LS )
Q3(BSC030N03LS ) Q4(BSC030N03LS )
gnd
R2 0
R3 0
gnd
R1 1.33K
TP7 DL
TP 6 DH
TP8 SW
D1 C1 0 .4 7 u F
TP
3
PGOOD
TP5 BST
R1 3
OPEN
SGN D
SGN D
GN D
TP2 CL K OU T
C2 150n F
TP9 SS
SGN D
TP10 VREG
TP1 TRK
C9
1.0u F
R4 100K
R6
100 K
SGN D
12V
1
GND
2
GND
3
5V
4
P
1
MOL E
X
-15244441
J1 0J9
GN D
J7
J1 1
TP11 SY N C
SGN D
R9 100k
R1 1 7.5k
R8 20K
R7
10K
R1 0 20K
C8 680pF
C7 33pF
C6 5.6nF
SGN D
TP4
FB
VIN
VREG
GN D SY N C
EN OFF ON
FREQ
300kHZ 600kHZ
CL K SET
LOW HI
GN D T P 2 Vout TP 1
JP1
JUM P ER- 3
JP2 JUM P ER- 3
JP3 JUM P ER- 3
C1 8
C1 9 1.0u F
C2 1
C2 2 C2 3
C2 4
R1 5 0
Q2 (not fitted )
R1 4 0
C1 0 0.1uF
C1 7 1.2n F
R1 6 3.01 ohm
C2 0
R1 7 (not fitted)
GN D
GN D
Figure 12. ADP1828 20 A Evaluation Board Schematic