April 2005

3

M9999-042205

LM2575

Micrel, Inc.

over full Operating Temperature Range. Unless otherwise specified, V

LM2575

Symbol

Parameter

Conditions

Typ

Limit

Units

(Note 2)

(Limits)

SYSTEM PARAMETERS, ADJUSTABLE REGULATORS (Note 3) Test Circuit Figure 1

V

OUT

Feedback Voltage

V

1.230

V

V

1.217

V(min)

1.243

V(max)

V

OUT

Feedback Voltage

1.230

V

LM2575

V

1.193/1.180

V(min)

1.267/1.280

V(max)

η

Efficiency

V

82

%

SYSTEM PARAMETERS, 3.3V REGULATORS (Note 3) Test Circuit Figure 1

V

OUT

Output Voltage

V

3.3

V

V

3.234

V(min)

3.366

V(max)

V

OUT

Output Voltage

3.3

V

LM2575-3.3

V

3.168/3.135

V(min)

3.432/3.465

V(max)

η

Efficiency

V

75

%

SYSTEM PARAMETERS, 5V REGULATORS (Note 3) Test Circuit Figure 1

V

OUT

Output Voltage

V

5.0

V

V

4.900

V(min)

5.100

V(max)

V

OUT

Output Voltage

5.0

V

LM2575-5.0

V

4.800/4.750

V(min)

5.200/5.250

V(max)

η

Efficiency

V

82

%

SYSTEM PARAMETERS, 12V REGULATORS (Note 3) Test Circuit Figure 1

V

OUT

Output Voltage

V

12

V

V

11.760

V(min)

12.240

V(max)

V

OUT

Output Voltage

12

V

LM2575-12

V

11.520/11.400

V(min)

12.480/12.600

V(max)

η

Efficiency

V

88

%

Maximum Supply Voltage

45V

ON/OFF Pin Input Voltage

–0.3V ≤ V ≤ +40V

Output Voltage to Ground (Steady State)

–1V

Power Dissipation

Internally Limited

Storage Temperature Range

–65°C to +150°C

Minimum ESD Rating

C = 100pF, R = 1.5kΩ

2 kV

FB Pin

1 kV

Lead Temperature (soldering, 10 sec.)

260°C

Maximum Junction Temperature

150°C

Operating Ratings

Temperature Range

–40°C ≤ T

Supply Voltage

40V