LM2575 datasheet(3/28 Pages) ONSEMI

部品番号	LM2575

部品情報	1.0 A, Adjustable Output Voltage, Step-Down

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メーカー	ONSEMI [ON Semiconductor]

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LM2575, NCV2575

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OPERATING RATINGS (Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee

specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.)

Rating

Symbol

Value

Unit

Operating Junction Temperature Range

TJ

−40 to +125

°C

Supply Voltage

Vin

40

V

SYSTEM PARAMETERS ([Note 1] Test Circuit Figure 14)

ELECTRICAL CHARACTERISTICS (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 = 200 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.)

Characteristics

Symbol

Min

Typ

Max

Unit

LM2575−3.3 (Note 1 Test Circuit Figure 14)

Output Voltage (Vin = 12 V, ILoad = 0.2 A, TJ = 25°C)

Vout

3.234

3.3

3.366

V

Output Voltage (4.75 V ≤ Vin ≤ 40 V, 0.2 A ≤ ILoad ≤ 1.0 A)

Vout

V

TJ = 25°C

3.168

3.3

3.432

TJ = −40 to +125°C

3.135

−

3.465

Efficiency (Vin = 12 V, ILoad = 1.0 A)

η

−

75

−

%

LM2575−5 ([Note 1] Test Circuit Figure 14)

Output Voltage (Vin = 12 V, ILoad = 0.2 A, TJ = 25°C)

Vout

4.9

5.0

5.1

V

Output Voltage (8.0 V ≤ Vin ≤ 40 V, 0.2 A ≤ ILoad ≤ 1.0 A)

Vout

V

TJ = 25°C

4.8

5.0

5.2

TJ = −40 to +125°C

4.75

−

5.25

Efficiency (Vin = 12 V, ILoad = 1.0 A)

η

−

77

−

%

LM2575−12 (Note 1 Test Circuit Figure 14)

Output Voltage (Vin = 25 V, ILoad = 0.2 A, TJ = 25°C)

Vout

11.76

12

12.24

V

Output Voltage (15 V ≤ Vin ≤ 40 V, 0.2 A ≤ ILoad ≤ 1.0 A)

Vout

V

TJ = 25°C

11.52

12

12.48

TJ = −40 to +125°C

11.4

−

12.6

Efficiency (Vin = 15V, ILoad = 1.0 A)

η

−

88

−

%

LM2575−15 (Note 1 Test Circuit Figure 14)

Output Voltage (Vin = 30 V, ILoad = 0.2 A, TJ = 25°C)

Vout

14.7

15

15.3

V

Output Voltage (18 V ≤ Vin ≤ 40 V, 0.2 A ≤ ILoad ≤ 1.0 A)

Vout

V

TJ = 25°C

14.4

15

15.6

TJ = −40 to +125°C

14.25

−

15.75

Efficiency (Vin = 18 V, ILoad = 1.0 A)

η

−

88

−

%

LM2575 ADJUSTABLE VERSION (Note 1 Test Circuit Figure 14)

Feedback Voltage (Vin = 12 V, ILoad = 0.2 A, Vout = 5.0 V, TJ = 25°C)

VFB

1.217

1.23

1.243

V

Feedback Voltage (8.0 V ≤ Vin ≤ 40 V, 0.2 A ≤ ILoad ≤ 1.0 A, Vout = 5.0 V)

VFB

V

TJ = 25°C

1.193

1.23

1.267

TJ = −40 to +125°C

1.18

−

1.28

Efficiency (Vin = 12 V, ILoad = 1.0 A, Vout = 5.0 V)

η

−

77

−

%

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 14 test circuit, system performance will be as shown in system parameters section.

2. Tested junction temperature range for the LM2575 and the NCV2575:

Tlow = −40°C

Thigh = +125°C

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