LM2574 datasheet(3/26 Pages) ONSEMI

3 / 26 page

LM2574, NCV2574

www.onsemi.com

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

−40 to +125

°C

Supply Voltage

Vin

Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond

the Recommended Operating Ranges limits may affect device reliability.

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

Output Voltage (4.75 V

≤ Vin ≤ 40 V, 0.1 A ≤ ILoad ≤ 0.5 A)

Vout

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)

−

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

Output Voltage (7.0 V

≤ Vin ≤ 40 V, 0.1 A ≤ ILoad ≤ 0.5 A)

Vout

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)

−

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

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

Vout

11.76

12.24

Output Voltage (15 V

≤ Vin ≤ 40 V, 0.1 A ≤ ILoad ≤ 0.5 A)

Vout

TJ = 25°C

11.52

12.48

TJ = −40 to +125°C

11.4

−

12.6

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

−

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

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

Vout

14.7

15.3

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

Vout

TJ = 25°C

14.4

15.6

TJ = −40 to +125°C

14.25

15.75

Efficiency (Vin = 18 V, ILoad = 0.5 A)

−

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

Feedback Voltage 7.0 V

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

VFBT

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)

−

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

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.

LM2574 Datasheet(PDF) 3 Page - ON Semiconductor

LM2574 Datasheet(HTML) 3 Page - ON Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

Datasheet Download

Link URL