NCV2574 datasheet(3/26 Pages) ONSEMI

Part #	NCV2574

Description	0.5 A, Adjustable Output Voltage, Step?묭own Switching Regulator

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LM2574, NCV2574

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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 16)

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, Vin = 30 V for the 15 V version. ILoad = 100 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).

Characteristic

Symbol

Min

Typ

Max

Unit

LM2574−3.3 ([Note 1] Test Circuit Figure 16)

Output Voltage (Vin = 12 V, ILoad = 100 mA, TJ = 25°C)

Vout

3.234

3.3

3.366

V

Output Voltage (4.75 V

≤ Vin ≤ 40 V, 0.1 A ≤ ILoad ≤ 0.5 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 = 0.5 A)

η

−

72

−

%

LM2574−5 ([Note 1] Test Circuit Figure 16)

Output Voltage (Vin = 12 V, ILoad = 100 mA, TJ = 25°C)

Vout

4.9

5.0

5.1

V

Output Voltage (7.0 V

≤ Vin ≤ 40 V, 0.1 A ≤ ILoad ≤ 0.5 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 = 0.5 A)

η

−

77

−

%

LM2574−12 ([Note 1] Test Circuit Figure 16)

Output Voltage (Vin = 25 V, ILoad = 100 mA, TJ = 25°C)

Vout

11.76

10

12.24

V

Output Voltage (15 V

≤ Vin ≤ 40 V, 0.1 A ≤ ILoad ≤ 0.5 A)

Vout

V

TJ = 25°C

11.52

12

12.48

TJ = −40 to +125°C

11.4

−

12.6

Efficiency (Vin = 15 V, ILoad = 0.5 A)

η

−

88

−

%

LM2574−15 ([Note 1] Test Circuit Figure 16)

Output Voltage (Vin = 30 V, ILoad = 100 mA, TJ = 25°C)

Vout

14.7

15

15.3

V

Output Voltage (18 V < Vin < 40 V, 0.1 A < ILoad < 0.5 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 = 0.5 A)

η

−

88

−

%

LM2574 ADJUSTABLE VERSION ([Note 1] Test Circuit Figure 16)

Feedback Voltage Vin = 12 V, ILoad = 100 mA, Vout = 5.0 V, TJ = 25°C

VFB

1.217

1.23

1.243

V

Feedback Voltage 7.0 V

≤ Vin ≤ 40 V, 0.1 A ≤ ILoad ≤ 0.5 A, Vout = 5.0

V

VFBT

V

TJ = 25°C

1.193

1.23

1.267

TJ = −40 to +125°C

1.18

1.28

Efficiency (Vin = 12 V, ILoad = 0.5 A, Vout = 5.0 V)

η

−

77

−

%

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

When the LM2574 is used as shown in the Figure 16 test circuit, the system performance will be as shown in the system parameters section

of the Electrical Characteristics.

2. Tested junction temperature range for the LM2574, NCV2574: Tlow = −40°C Thigh = +125°C.

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