7

LT1305

4-Cell-to-5V Converter

Setting Output Voltage

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

LT1305

GND

PGND

FB

SHDN

SW

SHUTDOWN

51k

0.1

µF

CERAMIC

ADD C1 FOR OPEN-PANEL PROTECTION

DALE LPE5047-A132 1:15 TURNS RATIO

10

µH PRIMARY INDUCTANCE (605) 666-9301

AVX TPS OR SANYO OS-CON MUST HAVE ESR

≤0.15Ω

1.5V TO 8V

1N4148

1N5818

+

1k

1/2W

3.3M

ZETEX

FZT658

3.3M

47

3.3M

10

Ω

T1**

1:15

1, 2

4, 5

6

10

•

•

R1

†

25k

100Hz TO 1000Hz

SQUARE WAVE

DRIVE

*

**

†

††

10k

EL PANEL

4.7

µF

160V

C1*

50pF

MUR160

LT1305 • TA04

EL Panel Driver

LBI

LBO

100k

100

µF

220

µF

LT1305

GND

PGND

FB

SW

LT1305 • TA06

10

µH*

309k

100k

+

5V

400mA

1.8V TO 4.5V

INPUT

OUTPUT

1.24V

+

2.2

µF

*COILCRAFT DO3316-103

+

MBRS130LT3

33k

2N3906

5V Step-Up Converter with Reference Output

R2

100

µF

1N5817

LT1305 • TA03

L1

R1

+

220

µF

+

R1

LT1305

GND

PGND

FB

SW

3.5V to 6.5V

SHDN

100k

4 CELLS

100

µF

150

µF**

22

µH*

100

µF**

SHUTDOWN

LT1305

GND

PGND

FB

SW

LT1305 • TA05

L1*

22

µH

309k

+

COILCRAFT DO3316-223 OR

SUMIDA CD105-220

SANYO OS-CON

*

**

5V

400mA

+

MBRS130LT3