4

FN6828.1

June 26, 2009

PWM Switching Frequency

1.9

2.4

2.75

MHz

SW Minimum On-Time

-65

-

ns

Soft-Start-Up Time

-1.2

-

ms

EN

Logic Input Low

--

0.4

V

Logic Input High

1.4

-

-

V

Logic Input Leakage Current

-0.1

1

µA

Thermal Shutdown

-

130

-

°C

Thermal Shutdown Hysteresis

-30

-

°C

Electrical Specifications

Unless otherwise noted, all parameter limits are guaranteed over the recommended operating conditions and

limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization

and are not production tested. (Continued)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Typical Operating Performance

FIGURE 1. EFFICIENCY vs LOAD CURRENT (VO = 1.5V)

FIGURE 2. EFFICIENCY vs LOAD CURRENT (VO = 2.5V)

FIGURE 4. OUTPUT VOLTAGE vs LOAD CURRENT

(ISL9103, VO_NORMINAL = 1.8V)

0

10

20

30

40

50

60

70

80

90

100

0

0.1

0.2

0.3

0.4

0.5

0

10

20

30

40

50

60

70

80

90

100

0

0.1

0.20.3

0.40.5

10

15

20

25

30

2.70

3.25

3.80

4.35

4.90

5.45

6.00

T = +85°C

T = +25°C

T = -45°C

1.775

1.780

1.785

1.790

1.795

1.800

0

100

200

300

400

500

VIN = 3.6V, FALLING

VIN = 3.6V, RISING

ISL9103, ISL9103A