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参数资料
| 型号： | LM2575S-12T |
| 元件分类： | 稳压器 |
| 英文描述： | 3.2 A SWITCHING REGULATOR, 62 kHz SWITCHING FREQ-MAX, PSSO5 |
| 封装： | TO-263, 5 PIN |
| 文件页数： | 3/18页 |
| 文件大小： | 449K |
| 代理商： | LM2575S-12T |
1.0 & 3.0 AMP MINICONVERTER
SWITCHING REGULATORS
LM2575
LM2576
1998 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
April 7, 1998
11
5. LAYOUT. Use short connections with a central point
ground to prevent improper operation caused by stray
inductance and ground loops.
6. OUTPUT CAPACITOR. Ripple voltage on V
OUT is
directly related to the value of C
OUT and the internal re-
sistance ESR of C
OUT. Output noise can be lowered by
increasing C
OUT or by selecting a capacitor with a lower
ESR. ESR must be approximately 0.03
for the
LM2576 or 0.07
for the LM2575, or above to maintain
stability, otherwise raise value of C
OUT.
7. SWITCHING SPIKES. Switching spikes will also oc-
cur due to distributive capacitance across turns of the
inductor when combined with output capacitor series
inductance (ESL). Reduction to a level at or below the
switching ripple can be achieved by using a post filter
as shown.
SWITCHING SPIKE REDUCTION
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2575S-12TR | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:1A & 3A Miniconverter Switching Regulators |
| LM2575S-15 | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM2575S-15 NOPB | 制造商:National Semiconductor 功能描述:Conv DC-DC Single Step Down 4V to 40V 6-Pin(5+Tab) TO-263 |
| LM2575S-15/NOPB | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| LM2575S-3.3 | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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