1A, 52kHz, Step-Down Switching Regulator

LM2575

intended to be functional, but do not guarantee specific performance limits. For guaranteed

specifications, see the Electrical Characteristics.)

LM2575-3.3V ([Note 1] Test Circuit Figure 2)

LM2575-5.0V ([Note 1] Test Circuit Figure 2)

LM2575-12V ([Note 1] Test Circuit Figure 2)

LM2575-ADJ ([Note 1] Test Circuit Figure 2)

%

-

1.28

-

HTC

−

3 −

1.18

1.193

η

-77

1.23

1.267

Vout

%

Vout

1.217

1.23

1.243

V

V

-

12.6

η

-88

-

Vout

V

11.52

12

12.48

11.4

%

Vout

11.76

12

12.24

V

-

5.25

η

-77

-

Vout

V

4.8

5.0

5.2

4.75

%

Vout

4.9

5.0

5.1

V

-

3.465

η

-75

-

Vout

V

3.168

3.3

3.432

3.135

3.366

V

Characteristics

Symbol

Min

Vout

3.234

3.3

TYP

Supply Voltage

Vin

40

Max

V

Unit

Operating Junction Temperature Range

-40 to +125

℃

Rating

Symbol

Value

Unit

(Unless otherwise specified, Vin = 12 V for the 3.3 V, 5.0 V, and Adjustable version, Vin = 25 V for

the 12 V version, and Vin = 30 V for the 15 V version. ILoad = 500 mA. For typical values TJ = 25°C,

for min/max values TJ is the operating junction temperature range that applies [Note 2], unless

otherwise noted.)

1. External components such as the catch diode, inductor, input and output capacitors can affect

switching regulator system performance.

When the LM2575 is used as shown in the Figure 15 test circuit, system performance will be as

shown in system parameters section .

2. Tested junction temperature range for the LM2575: Tlow = –40°C Thigh = +125°C