- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358819 > LM2574 (National Semiconductor Corporation) SIMPLE SWITCHER⑩ 0.5A Step-Down Voltage Regulator PDF資料下載
參數(shù)資料
| 型號： | LM2574 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | SIMPLE SWITCHER⑩ 0.5A Step-Down Voltage Regulator |
| 中文描述： | ⑩0.5A的的SIMPLE SWITCHER降壓穩(wěn)壓器 |
| 文件頁數(shù)： | 2/24頁 |
| 文件大小： | 397K |
| 代理商： | LM2574 |
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PDF資料 |
PDF描述 |
|---|---|
| LM2574M-3.3LM2574M-5.0 | SIMPLE SWITCHERT 0.5A Step-Down Voltage Regulator(639.73 k) |
| LM2574M-5 | SIMPLE SWITCHERT 0.5A Step-Down Voltage Regulator(639.73 k) |
| LM2574HV | |
| LM2574 | 0.5 A, Adjustable Output Voltage, Step-Down Switching Regulator(0.5A,可調(diào)輸出電壓,降壓型開關穩(wěn)壓器) |
| LM2575-33IKTGR | 1-A SIMPLE STEP DOWN SWITCHING VOLTAGE REGULATOR |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM2574 3.3V WAF | 制造商:Motorola Inc 功能描述: |
| LM2574/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Easy Switcher? 0.5A Step-Down Voltage Regulator |
| LM2574_05 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:52kHz Simple 0.5A Buck Regulator |
| LM2574_06 | 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 |
| LM2574-12 | 制造商:Texas Instruments 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。