15

LTC1174

LTC1174-3.3/LTC1174-5

S

APPLICATI

TYPICAL

Automatic Current Selection

Buck-Boost Converter

Battery Charger

1174 TA13

INPUT

VOLTAGE

6V TO 12.5V

+

3

LTC1174-5

GND

SHUTDOWN

SW

2

7

6

8

1

5

4

50

5V

0mA TO

320mA

100

µF*

20V

+

100

µF*

16V

1N5818

100k

*

†

SANYO OS-CON CAPACITOR

COILTRONICS CTX50-4

0.1

µF

100k

36.5k

TPO610L

100k

1174 TA14

INPUT VOLTAGE

4V TO 12V

+

3

LTC1174HV-5

GND

SHUTDOWN

SW

2

7

6

8

1

5

4

3.3

µF**

L1A

†

100

µH

1

2

L2A

†

100

µH

4

3

5V

160mA

0.1

µF

*

**

†

SANYO OS-CON

WIMA MKS2

COILTRONICS CTX100-4

100

µF*

20V

L1A

L1B

2

3

4

1

CTX100-4

+

100

µF*

16V

1N5818

1174 TA15

INPUT VOLTAGE

8V TO 12.5V

+

3

LTC1174

GND

SHUTDOWN

SW

2

7

6

8

1

5

4

D1

L1

†

50

µH

4 NiCAD BATTERY

0.1

µF

+

100

µF**

10V

33k

150k

8

9

10

11

12

320

325

330

335

335

*

**

D1,D2

†

AVX TAJD226K020

AVX TAJD107K010

= MBRS140T3

(SURFACE MOUNT)

1N5818

L1 SELECTION

MANUFACTURER

COILTRONICS

COILCRAFT

SUMIDA

GOWANDA

PART NO.

CTX50-2P

DT3316-473

CD54-470

GA10-472K

TYPE

SURFACE MOUNT

SURFACE MOUNT

SURFACE MOUNT

THROUGH HOLE

2

× 22µF*

20V

D2

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.