33394

35

MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA

Figure 21. 33394 Application Circuit with Increased 3.3V Output Current Capability

VKAM_FB

VSEN

REGON

WAKEUP

VREF1

VPP_EN

VPP

VDD3_3

VDD3_3FB

VDDL_X

VDDL_B

INV

VCOMP

VPRE

VPRE_S

VDDH

VREF2

VREF3

DO

SCLK

DI

CS

PC33394FC

12

13

14

15

16

17

18

19

20

21

22

44

43

42

41

40

39

38

37

36

35

34

U1

R4

22 k

C22

47

mF

+

+3.3V

C21

10 nF

C9

1.0

mF

+

C13

33

mF

+

C12

10 nF

C8

10 nF

C18

R15

47 k

VDDH

VKAM

R16

10 k

R17

10 k

R18

10 k

VPRE

Q2

MJD31C

C23

10 nF

C24

100

mF

+

C1

100 nF

C28

10 nF

C16

1.0

mF

+

C17

10 nF

C10

47

mF

+

C14

+

C15

10 nF

C11

10 nF

1.0

mF

VDDH

VREF2

VREF3

C5

+

C30

+

33

mF/16 V

OPTIONAL

OUTPUT

FILTER

2

1

L3

3.3 nF

R1

430R

MTD20N03HDL

Q1

20BQ030

D1

SS25

D3

2

1

L1

47

mH

R13

18R

C19

10 nF

C20

100

mF

+

VPRE

Q4

VDDL_X

VDDL_B

R7

100R

R5

110R

VDDL_FB

Q4

MJD31C

Q3

MJD31C

VDDL

J1

CON/34

R6

20 k

C6

100 pF

C7

1.0 nF

R2 100 k

C29

1.0

mF/

50 V

R14

4.7k

+BATTERY

VIGN

VPRE

C2

100

mF/

20 V

34

35

36

37

R9

4.7 k

DO

R10

4.7 k

SCLK

R11

4.7 k

DI

R12

4.7 k

CS

C3

MURS320T3

Q4

2

1

L2

6.8

mH

D2

C4

+

C26

1.0

mF/50 V

100

mF/

35 V

1.0

mF/

50 V

VDDL

R19

10R

VBAT

VPRE_S

2.6V VKAM

5.0V @ 100mA VREF1

5.0V @ 400 mA

5.0V @ 100 mA

5.0V @ 100 mA

2.6V @ 400 mA

*

R3

4.7 k

JP1

1

2

VDDH

SW1

DIP–2

VPP_EN

*Notes: 1. D2 is a protection diode against reverse battery fault condition. In those applications, which do not require this type of protection, diode D2 can be ommitted.

C25 *

120R

C27 *

5.0V @ 150mA VPP

1.0

mF

Freescale Semiconductor, Inc.

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