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SC1185A

PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER

Semtech Corporation 

PRELIMINARY - January 6, 1999

PROGRAMMABLE SYNCHRONOUS DC/DC

CONVERTER, DUAL LOW DROPOUT

REGULATOR CONTROLLER

SC1185

SC1185A

95%

95%

90%

90%

85%

85%

80%

75%

3.5V Std

3.5V Sync

3.5V Sync Lo Rds

80%

75%

2.8V Std

2.8V Sync

2.8V Sync Lo Rds

70%

0

2

4

6

8

10

12

14

16

Io (Amps)

70%

0

2

4

6

8

10

12

14

16

Io (Amps)

Typical Efficiency at Vo=3.5V

Typical Efficiency at Vo=2.8V

95%

95%

90%

90%

85%

85%

80%

2.5V Std

2.5V Sync

75%

2.5V Sync Lo Rds

80%

75%

2.0V Std

2.0V Sync

2.0V Sync Lo Rds

70%

0

2

4

6

8

10

12

14

16

Io (Amps)

70%

0

2

4

6

8

10

12

14

16

Io (Amps)

Typical Efficiency at Vo=2.5V

Typical Efficiency at Vo=2.0V

Typical Ripple, Vo=2.8V, Io=10A

© 1999 SEMTECH CORP.

Transient Response Vo=2.8V, Io=300mA to 10A

7

652 MITCHELL ROAD NEWBURY PARK CA 91320

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