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參數資料
| 型號： | LM2575D2T-15G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5 |
| 封裝： | LEAD FREE, D2PAK-5 |
| 文件頁數： | 26/28頁 |
| 文件大?。?/td> | 388K |
| 代理商： | LM2575D2T-15G |
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LM2575
http://onsemi.com
7
Figure 14. Typical Test Circuit
D1
1N5819
L1
330
mH
Output
2
4
Feedback
Cout
330
mF
/16 V
Cin
100
mF/50 V
LM25755
1
5
3ON/OFF
GND
Vin
Load
Vout
Regulated
Output
Vin
Unregulated
DC Input
8.0 V 40 V
D1
1N5819
L1
330
mH
Output
2
4
Feedback
Cout
330
mF
/16 V
Cin
100
mF/50 V
LM2575
Adjustable
1
5
3ON/OFF
GND
Vin
Load
Vout
Regulated
Output
Unregulated
DC Input
8.0 V 40 V
5.0 Output Voltage Versions
Adjustable Output Voltage Versions
Vout + Vref 1 )
R2
R1
R2
+ R1
Vout
V
ref
–1
Where Vref = 1.23 V, R1
between 1.0 k
W and 5.0 kW
R2
R1
+
+
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.
For best results, singlepoint grounding (as indicated) or
ground plane construction should be used.
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.
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PDF描述 |
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| LM2575D2T-5 | SWITCHING REGULATOR, 52 kHz SWITCHING FREQ-MAX, PSSO5 |
| LM2575TV-5 | SWITCHING REGULATOR, 52 kHz SWITCHING FREQ-MAX, PZFM5 |
| LM2575D2T-ADJR4 | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5 |
| LM2575D2T-3.3R4 | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5 |
| LM2575D2T-12R4 | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LM2575D2T-15R | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:1.0 A Adjustable Output Voltage Step-Down Switching Regulator(244.52 k) |
| LM2575D2T-15R4 | 功能描述:直流/直流開關調節(jié)器 15V 1A Buck PWM RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| LM2575D2T-15R4G | 功能描述:直流/直流開關調節(jié)器 15V 1A Buck PWM RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| LM2575D2T-3.3 | 功能描述:直流/直流開關調節(jié)器 3.3V 1A Buck PWM RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| LM2575D2T-3.3G | 功能描述:直流/直流開關調節(jié)器 3.3V 1A Buck PWM RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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