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| 型号： | LM2575T-ADJG |
| 厂商： | ON Semiconductor |
| 文件页数： | 7/28页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 1A TO220-5 |
| 标准包装： | 50 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.23 V ~ 37 V |
| 输入电压： | 4.75 V ~ 40 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 52kHz |
| 电流 - 输出： | 1A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-220-5 |
| 包装： | 管件 |
| 供应商设备封装： | TO-220-5 |
| 产品目录页面： | 1116 (CN2011-ZH PDF) |
| 其它名称： | LM2575T-ADJGOS |
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LM2575, NCV2575
5.0 Output Voltage Versions
Feedback
+
V in
1
LM2575 ? 5
4
Output
L1
330 m H
V out
Regulated
Output
2
V in
3
GND
5
ON/OFF
Unregulated
DC Input
8.0 V - 40 V
C in
100 m F/50 V
D1
1N5819
C out
330 m F
/16 V
Load
-
Adjustable Output Voltage Versions
Feedback
+
V in
1
LM2575
Adjustable
4
Output
L1
330 m H
V out
Regulated
Output
2
3
GND
5
ON/OFF
Unregulated
DC Input
8.0 V - 40 V
C in
100 m F/50 V
D1
1N5819
C out
330 m F
/16 V
R2
Load
R1
-
1 ) R2
V out + V
ref
R1
R2 + R1
V out
V ref
1
Where V ref = 1.23 V, R1
between 1.0 k W and 5.0 k W
Figure 14. Typical Test Circuit
PCB LAYOUT GUIDELINES
As in any switching regulator, the layout of the printed
circuit board is very important. Rapidly switching currents
associated with wiring inductance, stray capacitance and
parasitic inductance of the printed circuit board traces can
generate voltage transients which can generate
electromagnetic interferences (EMI) and affect the desired
operation. As indicated in the Figure 14, to minimize
inductance and ground loops, the length of the leads
indicated by heavy lines should be kept as short as possible.
On the other hand, the PCB area connected to the Pin 2
(emitter of the internal switch) of the LM2575 should be
kept to a minimum in order to minimize coupling to sensitive
circuitry.
Another sensitive part of the circuit is the feedback. It is
important to keep the sensitive feedback wiring short. To
assure this, physically locate the programming resistors near
to the regulator, when using the adjustable version of the
LM2575 regulator.
For best results, single ? point grounding (as indicated) or
ground plane construction should be used.
http://onsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2575T-ADJG | 制造商:ON Semiconductor 功能描述:IC STEP-DOWN REGULATOR TO-220-5 制造商:ON Semiconductor 功能描述:IC, STEP-DOWN REGULATOR, TO-220-5 |
| LM2575T-ADJ-H | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Voltage-Mode SMPS Controller |
| LM2575TADJLF02 | 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 4V to 40V 5-Pin(5+Tab) TO-220 Rail |
| LM2575T-ADJ-V | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Voltage-Mode SMPS Controller |
| LM2575TV | 制造商:HTC 制造商全称:HTC Korea TAEJIN Technology Co. 功能描述:1A, 52kHz, Step-Down Switching Regulator |
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