14

KB3302

Kingbor Technology Co.,Ltd

TEL:(86)0755-26508846 FAX:(86)0755-26509052

PACAGE DESCRIPTION

3.6 - 6V

4-CELL

VOUT

C1

2.2

µF

KB3302

2

3

1

5

6

4

GND

SHDN

SS

IN

SW

FB

ROSC

COMP

8

7

ON

OFF

C3

C4

R2

R1

R3

R4

10BQ015

D1

C2

10

µF

47nF

560pF

20K

20K

60.4K

5V

7.68K

C5

47pF

L1

4.9

µH

C6

2.2

µF

L2

4.9

µH

Figure 12(a). 1.5 MHz All Ceramic Capacitor 4-Cell to 5V SEPIC Converter. Pinout Shown is for MSOP-8.

L1 and L2: Coiltronics CTX5-1

Figure 11(b). Efficiency of the Single Li-ion Cell to 5V Boost

Converter in Figure 11(a).

Efficiency

50

55

60

65

70

75

80

85

90

95

0.001

0.010

0.100

1.000

Load Current (A)

1.2MHz

5V, 0.8A

C1

2.2

µF

VOUT

ON

OFF

C3

C4

10BQ015

R3

D1

L1

1.8

µH

C2

10

µF

47nF

1nF

R2

100K

17.4K

KB3302

2

3

1

5

6

4

GND

SHDN

SS

IN

SW

FB

ROSC

COMP

8

7

2.6 - 4.2V

1-CELL

LI-ION

R1

301K

R4

10.7K

Figure 11(a). 1.2 MHz All Ceramic Capacitor Single Li-ion Cell

L1: Sumida CR43

to 5V Boost Converter.