0

10

5

15

20

0

3

4

1

2

5

6

8

7

9

SUPPLY CURRENT

vs. LOAD CURRENT

LOAD CURRENT (A)

SYNC = HIGH

SYNC = LOW

SKIP = LOW

Miniature, Low-Voltage,

Precision Step-Down Controller

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

SHDN, SKIP, SYNC

SHDN, SKIP, SYNC

% of nominal output

FB, with respect to regulation point

CONDITIONS

V

0.8

Logic Input Voltage Low

V

2.4

Logic Input Voltage High

%

60

80

Output Undervoltage Lockout Threshold

%

4.0

10

Overvoltage Trip Threshold

UNITS

MIN

TYP

MAX

PARAMETER

Note 1: Guaranteed by design, not production tested.

Note 2: Specifications from -40°C to 0°C are guaranteed by design and not production tested.

__________________________________________Typical Operating Characteristics

100

50

0.01

10

1

0.1

EFFICIENCY vs. LOAD CURRENT

(1.7V/7A CIRCUIT)

70

60

90

80

LOAD CURRENT (A)

SKIP = LOW

100

0

0.001

10

1

0.01

0.1

EFFICIENCY vs. LOAD CURRENT

(2.5V/3A CIRCUIT)

40

30

20

10

80

70

90

60

50

LOAD CURRENT (A)

SKIP = LOW

100

50

0.01

10

1

0.1

EFFICIENCY vs. LOAD CURRENT

(2.5V/2A CIRCUIT)

70

60

90

80

LOAD CURRENT (A)

SKIP = LOW

100

50

0.01

10

1

0.1

EFFICIENCY vs. LOAD CURRENT

(3.3V/3A CIRCUIT)

70

60

90

80

LOAD CURRENT (A)

SKIP = LOW

0

10

5

15

20

3.0

4.0

3.5

4.5

5.0

5.5

6.0

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

SUPPLY VOLTAGE (V)

SKIP = HIGH

SKIP = LOW

OVERVOLTAGE PROTECTION

INPUTS AND OUTPUTS