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4 evaluation board specification, 4evaluation board specification, 3v, v – Garmin MC34676B User Manual

Page 3: 8v i, 1200ma for usb charger: v, 85v i, 400ma, Ac_min, Ac_max, Usb_min

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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