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參數(shù)資料
| 型號： | LM2574N-15 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | PLASTIC, DIP-8 |
| 文件頁數(shù)： | 18/24頁 |
| 文件大?。?/td> | 396K |
| 代理商： | LM2574N-15 |
LM2574
3
MOTOROLA ANALOG IC DEVICE DATA
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
–
%
NOTES: 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: Tlow = –40°C Thigh = +125°C
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2574N-15/NOPB | 功能描述:IC REG BUCK 15V 0.5A 8-DIP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:SIMPLE SWITCHER® 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):52kHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12 |
| LM2574N-15G | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:0.5 A, Adjustable Output Voltage, Step−Down Switching Regulator |
| LM2574N-3.3 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| LM2574N-3.3 NOPB | 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 4V to 40V 8-Pin PDIP Rail |
| LM2574N-3.3/NOPB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
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