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參數資料
| 型號： | LMX2575MX-15 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | 3.2 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | SMT-24 |
| 文件頁數： | 30/30頁 |
| 文件大小： | 676K |
| 代理商： | LMX2575MX-15 |
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Typical Performance Characteristics (Circuit of Figure 2) (Continued)
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 Ad-
justable version, physically locate the programming resistors
near the regulator, to keep the sensitive feedback wiring
short.
Feedback Pin Current
DS011475-5
Maximum Power Dissipation
(TO-263) (See (Note 12))
DS011475-28
Switching Waveforms
DS011475-6
VOUT = 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 s/div
Load Transient Response
DS011475-7
www.national.com
9
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