參數(shù)資料
型號(hào)： LM1575
廠商： National Semiconductor Corporation
英文描述： SIMPLE SWITCHER 1A Step-Down Voltage Regulator
中文描述： 的SIMPLE SWITCHER 1A步降穩(wěn)壓器
文件頁(yè)數(shù)： 11/27頁(yè)
文件大小： 725K
代理商： LM1575
Typical Performance Characteristics
(Circuit of
Figure 2
) (Continued)
Feedback Pin Current
Maximum Power Dissipation
(TO-263) (See
(Note 12)
)
01147505
01147528
Switching Waveforms
Load Transient Response
01147506
V
OUT
= 5V
A: Output Pin Voltage, 10V/div
B: Output Pin Current, 1A/div
C: Inductor Current, 0.5A/div
D: Output Ripple Voltage, 20 mV/div,
AC-Coupled
Horizontal Time Base: 5 μs/div
01147507
Test Circuit and Layout Guidelines
As in any switching regulator, layout is very important. Rap-
idly switching currents associated with wiring inductance
generate voltage transients which can cause problems. For
minimal inductance and ground loops, the length of the leads
indicated by heavy lines should be kept as short as possible.
Single-point grounding (as indicated) or ground plane con-
struction should be used for best results. When using the
Adjustable version, physically locate the programming resis-
tors near the regulator, to keep the sensitive feedback wiring
short.
L
www.national.com
11
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相關(guān)代理商/技術(shù)參數(shù)
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LM1575_07 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SIMPLE SWITCHER㈢ 1A Step-Down Voltage Regulator
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LM1575-5.0AK 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage-Mode SMPS Controller
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