High-Efficiency, Current-Mode,

Inverting PWM Controller

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5

100

0

1

10

100

1000

10,000

EFFICIENCY vs. LOAD CURRENT

20

LOAD CURRENT (mA)

40

60

80

70

50

30

10

90

APPLICATION CIRCUIT A

100

0

1

10

100

1000

10,000

EFFICIENCY vs. LOAD CURRENT

20

LOAD CURRENT (mA)

40

60

80

70

50

30

10

90

APPLICATION CIRCUIT B

90

0

1

1000

100

10

EFFICIENCY vs. LOAD CURRENT

30

10

70

50

100

40

20

80

60

LOAD CURRENT (mA)

APPLICATION CIRCUIT C

-12.10

-12.04

-12.06

-12.08

-12.02

-12.00

-11.98

-11.96

-11.94

-11.92

-11.90

0

200

100

300

400

500

600

OUTPUT VOLTAGE LOAD REGULATION

LOAD CURRENT (mA)

APPLICATION CIRCUIT B

0

0.4

0.2

0.8

0.6

1.0

1.2

1.4

1.6

04

6

2

8

10

12

14

16

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

1.238

1.246

1.242

1.254

1.250

1.258

1.262

-40

20

40

-20

0

60

80

100

REFERENCE VOLTAGE

vs. TEMPERATURE

TEMPERATURE (

°C)

Typical Operating Characteristics

(Circuit references are from Table 1 in the

noted.)

ELECTRICAL CHARACTERISTICS (continued)

unless otherwise noted.) (Note 3)

PARAMETER

CONDITIONS

MIN

MAX

UNITS

POL, SYNC Input Current

POL, SYNC = GND or VL

40

µA

-12

0

SHDN Input Current

6

µA

EXT OUTPUT

7.5

EXT On-Resistance

12

Ω

Note 3: Parameters to -40°C are guaranteed by design and characterization.