- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358819 > LM2574HV (National Semiconductor Corporation) PDF資料下載
參數(shù)資料
| 型號： | LM2574HV |
| 廠商： | National Semiconductor Corporation |
| 文件頁數(shù)： | 3/24頁 |
| 文件大?。?/td> | 397K |
| 代理商： | LM2574HV |
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
Vin
–40 to +125
°
C
Supply Voltage
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)
Output Voltage (4.75 V
≤
Vin
≤
40 V, 0.1 A
≤
ILoad
≤
0.5 A)
TJ = 25
°
C
TJ = –40 to +125
°
C
Efficiency (Vin = 12 V, ILoad = 0.5 A)
Vout
Vout
3.234
3.3
3.366
V
V
3.168
3.135
3.3
–
3.432
3.465
η
–
72
–
%
LM2574–5
([Note 1] Test Circuit Figure 16)
Output Voltage (Vin = 12 V, ILoad = 100 mA, TJ = 25
°
C)
Output Voltage (7.0 V
≤
Vin
≤
40 V, 0.1 A
≤
ILoad
≤
0.5 A)
T
J = 25
°
C
T
J = –40 to +125
°
C
Efficiency (Vin = 12 V, ILoad = 0.5 A)
Vout
Vout
4.9
5.0
5.1
V
V
4.8
4.75
5.0
5.2
5.25
η
–
77
–
%
LM2574–12
([Note 1] Test Circuit Figure 16)
Output Voltage (Vin = 25 V, ILoad = 100 mA, TJ = 25
°
C)
Output Voltage (15 V
≤
Vin
≤
40 V, 0.1 A
≤
ILoad
≤
0.5 A)
T
J = 25
°
C
T
J = –40 to +125
°
C
Efficiency (Vin = 15 V, ILoad = 0.5 A)
Vout
Vout
11.76
10
12.24
V
V
11.52
11.4
12
–
12.48
12.6
η
–
88
–
%
LM2574–15
([Note 1] Test Circuit Figure 16)
Output Voltage (Vin = 30 V, ILoad = 100 mA, TJ = 25
°
C)
Output Voltage (18 V < Vin < 40 V, 0.1 A < ILoad < 0.5 A)
TJ = 25
°
C
TJ = –40 to +125
°
C
Efficiency (Vin = 18 V, ILoad = 0.5 A)
Vout
Vout
14.7
15
15.3
V
V
14.4
14.25
15
15.6
15.75
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
Feedback Voltage 7.0 V
≤
Vin
≤
40 V, 0.1 A
≤
ILoad
≤
0.5 A, Vout = 5.0 V
TJ = 25
°
C
TJ = –40 to +125
°
C
Efficiency (Vin = 12 V, ILoad = 0.5 A, Vout = 5.0 V)
VFB
VFBT
1.217
1.23
1.243
V
V
1.193
1.18
1.23
1.267
1.28
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2574 | 0.5 A, Adjustable Output Voltage, Step-Down Switching Regulator(0.5A,可調(diào)輸出電壓,降壓型開關(guān)穩(wěn)壓器) |
| LM2575-33IKTGR | 1-A SIMPLE STEP DOWN SWITCHING VOLTAGE REGULATOR |
| LM2575T-5 | Precision Chopper-Stabilized Advanced LinCMOS(TM) Operational Amplifier 8-SOIC -55 to 125 |
| LM2575T-12 | EASY SWITCHERE⑩ 1.0 A STEP-DOWN VOLTAGE REGULATOR |
| LM2575D2T-15 | EASY SWITCHERE⑩ 1.0 A STEP-DOWN VOLTAGE REGULATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2574HVM-12 | 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 |
| LM2574HVM-12/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 |
| LM2574HVM-12/NOPB | 制造商:Texas Instruments 功能描述:DC/DC Converter IC |
| LM2574HVM-15 | 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 |
| LM2574HVM-15/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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。