- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358818 > LM2574HVM-ADJ (NATIONAL SEMICONDUCTOR CORP) SIMPLE SWITCHER⑩ 0.5A Step-Down Voltage Regulator PDF資料下載
參數(shù)資料
| 型號： | LM2574HVM-ADJ |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SIMPLE SWITCHER⑩ 0.5A Step-Down Voltage Regulator |
| 中文描述： | 1.8 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | SMT-14 |
| 文件頁數(shù)： | 2/24頁 |
| 文件大小： | 397K |
| 代理商： | LM2574HVM-ADJ |
LM2574
2
MOTOROLA ANALOG IC DEVICE DATA
Figure 1. Block Diagram and Typical Application
7.0 – 40 V
Unregulated
DC Input
L1
330
μ
H
Pwr
Gnd
+Vin
5
Cin
22
μ
F
4
ON/OFF
3
Output
7
Feedback
1
D1
1N5819
Cout
220
μ
F
Typical Application
(Fixed Output Voltage Versions)
Representative Block Diagram and Typical Application
Unregulated
DC Input
+Vin
5
Cout
Feedback
1
Cin
L1
D1
R2
R1
1.0 k
Output
7
Pwr Gnd
4
ON/OFF
3
Reset
Latch
Thermal
Shutdown
52 kHz
Oscillator
1.235 V
Band–Gap
Reference
Freq
Shift
18 kHz
Comparator
Fixed Gain
Error Amplifier
Current
Limit
Driver
1.0 Amp
Switch
ON/OFF
3.1 V Internal
Regulator
Vout
Load
Output
Voltage Versions
3.3 V
5.0 V
12 V
15 V
For adjustable version
R1 = open, R2 = 0
R2
(
)
1.7 k
3.1 k
8.84 k
11.3 k
LM2574
5.0 V Regulated
Output 0.5 A Load
Sig
Gnd
2
Sig Gnd
2
ABSOLUTE MAXIMUM RATINGS
(Absolute Maximum Ratings indicate limits beyond which
damage to the device may occur).
Rating
Symbol
Value
Unit
Maximum Supply Voltage
Vin
–
45
V
ON/OFF Pin Input Voltage
–0.3 V
≤
V
≤
+Vin
–1.0
V
Output Voltage to Ground (Steady State)
–
V
DW Suffix, Plastic Package Case 751G
Max Power Dissipation
Thermal Resistance, Junction–to–Air
PD
R
θ
JA
Internally Limited
145
W
°
C/W
N Suffix, Plastic Package Case 626
Max Power Dissipation
Thermal Resistance, Junction–to–Ambient
Thermal Resistance, Junction–to–Case
PD
R
θ
JA
R
θ
JC
Tstg
–
Internally Limited
100
5.0
W
°
C/W
°
C/W
Storage Temperature Range
–65
°
C to +150
°
C
°
C
Minimum ESD Rating
(Human Body Model: C = 100 pF, R = 1.5 k
)
Lead Temperature (Soldering, 10 seconds)
2.0
kV
–
260
°
C
Maximum Junction Temperature
TJ
150
°
C
NOTE:
ESD data available upon request.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM2574HVM-5.0 | SIMPLE SWITCHER⑩ 0.5A Step-Down Voltage Regulator |
| LM2574HVM-3.3 | SIMPLE SWITCHER⑩ 0.5A Step-Down Voltage Regulator |
| LM2574HVM-15 | Hardside Gear Box; For Use With:Fluke DMMs, Testers, Calibrators and Accessories; Color:Yellow RoHS Compliant: NA |
| LM2574HVM-12 | Storage, Cases Product Description:Softside Vinyl Carrying Case RoHS Compliant: NA |
| LM2574HVN-5.0 | INDUCTOR, 47UH, 1950MA; Inductor type:Power Inductor; Inductance:47uH; Tolerance, inductance:20%; Resistance:0.17R; Current, DC max:1950mA; Frequency, resonant:8MHz; Case style:SMD; Material, core:Ferrite; Tolerance, :20%; RoHS Compliant: Yes |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM2574HVM-ADJ/NOPB | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 0.5A STEP-DOWN VLTG REG 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-ADJ/NOPB | 制造商:Texas Instruments 功能描述:DC/DC Converter (DC-DC) / Switching Regu |
| LM2574HVMX-12 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller |
| LM2574HVMX-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 |
| LM2574HVMX-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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。