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LM2574DW-ADJR2G bảng dữ liệu(PDF) 3 Page - ON Semiconductor

tên linh kiện LM2574DW-ADJR2G
Giải thích chi tiết về linh kiện  0.5 A, Adjustable Output Voltage, Step-Down Switching Regulator
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nhà sản xuất  ONSEMI [ON Semiconductor]
Trang chủ  http://www.onsemi.com
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LM2574, NCV2574
www.onsemi.com
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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
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
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
%
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.


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