IL2576-xx

DEVICE PARAMETERS

ELECTRICAL CHARACTERISTICS

operating junction temperature range that applies [Note 2], unless otherwise noted.)

Characteristics

Symbol

Min

Max

Unit

ALL OUTPUT VOLTAGE VERSIONS

Feedback Bias Current (Vout = 5.0 V [Adjustable Version

Only])

–

–

100

500

nA

Oscillator Frequency [Note 3]

–

42

–

63

kHz

Saturation Voltage (Iout = 3.0 A [Note 4])

–

–

1.8

2.0

V

Max Duty Cycle (“on”) [Note 5]

93

–

%

Current Limit (Peak Current [Notes 3 and 4])

4.2

3.5

6.9

7.5

A

Output = 0 V

Output = –1.0 V

–

–

2.0

30

mA

Quiescent Current [Note 6]

–

–

10

11

mA

Standby Quiescent Current (ON/OFF Pin = 5.0 V (“off”))

Istby

–

200

uA

ON/OFF Pin Logic Input Level

Vout = 0 V

Vout = Nominal Output Voltage

2.2

2.4

–

–

–

–

1.0

0.8

V

ON/OFF Pin Input Current

–

–

30

10

uA

3. The oscillator frequency reduces to approximately 18 kHz in the event of an output short or an overload which causes the regulated

output voltage to drop approximately 40% from the nominal output voltage. This self protection feature lowers the average dissipation of

the IC by lowering the minimum duty cycle from 5% down to approximately 2%.

4. Output (Pin 2) sourcing current. No diode, inductor or capacitor connected to output pin.

5. Feedback (Pin 4) removed from output and connected to 0 V.

6. Feedback (Pin 4) removed from output and connected to +12 V for the Adjustable, 3.3 V, and 5.0 V versions, and +25 V for the 12 V

and 15 V versions, to force the output transistor “off”.

Rev. 02