參數(shù)資料
型號(hào)： LM2576-15
廠商： Motorola, Inc.
英文描述： Easy Switcher 3.0A Step-Down Voltage Regulator
中文描述： 輕松切換3.0A的降壓穩(wěn)壓器
文件頁(yè)數(shù)： 8/28頁(yè)
文件大?。?/td> 301K
代理商： LM2576-15
LM2576
8
MOTOROLA ANALOG IC DEVICE DATA
Figure 15. Typical Test Circuit
D1
MBR360
L1
100
μ
H
Output
2
4
Feedback
Cout
1000
μ
F
Cin
100
μ
F
LM2576
Fixed Output
1
5
3
ON/OFF
Gnd
Vin
Load
Vout
D1
MBR360
L1
100
μ
H
Output
2
4
Feedback
Cout
1000
μ
F
Cin
100
μ
F
LM2576
Adjustable
1
5
3
ON/OFF
Gnd
Vin
Load
Vout
5,000 V
Fixed Output Voltage Versions
Adjustable Output Voltage Versions
Vout
Vref
1.0
R2
R1
R2
R1
Vout
Vref
– 1.0
Where Vref = 1.23 V, R1
between 1.0 k and 5.0 k
R2
R1
Cin
Cout–
D1
L1
R1
R2
–
100
μ
F, 75 V, Aluminium Electrolytic
1000
μ
F, 25 V, Aluminium Electrolytic
Schottky, MBR360
100
μ
H, Pulse Eng. PE–92108
2.0 k, 0.1%
6.12 k, 0.1%
–
–
–
–
7.0 V – 40 V
Unregulated
DC Input
7.0 V – 40 V
Unregulated
DC Input
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 15, 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, single–point 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 LM2576 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
LM2576 regulator.
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相關(guān)代理商/技術(shù)參數(shù)
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LM2576-15BU 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Voltage-Mode SMPS Controller
LM2576-3.3 制造商:MOTOROLA 制造商全稱(chēng):Motorola, Inc 功能描述:Easy Switcher 3.0A Step-Down Voltage Regulator
LM2576-3.3BT 功能描述:IC REG BUCK 3.3V 3A TO220-5 RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類(lèi)型:降壓（降壓） 輸出類(lèi)型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開(kāi)關(guān):52kHz 電流 - 輸出:1A 同步整流器:無(wú) 工作溫度:-40°C ~ 125°C 安裝類(lèi)型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱(chēng):*LM2575HVN-12LM2575HVN-12
LM2576-3.3BT⒂ 制造商:MICREL 制造商全稱(chēng):Micrel Semiconductor 功能描述:52kHz Simple 3A Buck Voltage Regulator
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