Garmin MC34676B - Manual (Page 3)

Using the Dual 28V Input Voltage Charger with Linear Regulator, Rev. 1.0
Freescale Semiconductor 3
Evaluation Board Specification
4 Evaluation Board Specification
The evaluation board is designed to work as a standalone charger, or as an embedded charger in a handheld system.
Figure 3 shows its schematic circuit. The normal operation range of the evaluation board is:
For AC charger:
V
AC_MIN
= 4.3V, V
AC_MAX
= 6.8V
I
AC_MAX
= 1200mA
For USB charger:
V
USB_MIN
= 4.3V, V
USB_MAX
= 5.85V
I
USB_MAX
= 400mA
Figure 3. The Schematic Circuit of the Evaluation Board
J10
H D R _1 X2
1
2
J1 1
H D R _ 1X2
1
2
R 9
1 3. 3K
R 8
13 .0 K
BAT
B AT
R 11
20 0K
C 5
1. 0U F
R 10
28. 7K
J 12
H D R _1X2
1
2
R 3
6. 49
R 2
1 3. 0K
R 1
26. 1K
TP26
I U SB
U 1
MC 34 676 B
AC
1
U SB
2
PP R
3
C H G 4
U SB EN 5
I MIN 6 IU SB 7
GN D 8
I SET 9
U SBOU T
10
BAT
11
BA TD ET
12
E-
P A
D
TP28
IMI N
C 2
N C
TP1
AC
1
TP1 0
VLo gic
1
TP1 3
U SBE N
1
R 5
47 0 OH M
R 4
47 0 OH M
TP3
U SB
1
J 5
H D R _1X3
1
2
3
J4
H D R _1X3
1 2 3
R 7
1 00K
R 6
1 00K
D 2
GR EEN
2
1
D 1
R ED
2
1
TP2 5
GN D
J1 3
H D R _1 X2
1
2
TP 17
U SB
TP22
/ C H G
TP 15
AC
TP 16
BA TD ET
TP 18
VB AT
TP 19
U SB OU T
TP2 4
GN D
TP2 3
GN D
TP20
I SET
TP2 7
U SBE N
TP2 1
/P PR
TP1 1
/C H G
1
TP7
/P PR
1
J 2
H D R _1X2
1 2
J 1
H D R _ 1X2
1 2
J3
H D R _ 1X2
1 2
J
H
1
2
J6
H D R _ 1X2
1
2
J9
H D R _1 X2
1
2
J 8
H D R _1X2
1
2
C 4
1. 0U F
C 3
1. 0U F
C 1
1. 0U F
BAT