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参数资料
| 型号： | LM2576T-ADJLB03/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 3 A SWITCHING REGULATOR, 52 kHz SWITCHING FREQ-MAX, SFM5 |
| 封装： | ROHS COMPLIANT, TO-220, 5 PIN |
| 文件页数： | 2/24页 |
| 文件大小： | 750K |
| 代理商： | LM2576T-ADJLB03/NOPB |
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.
Fixed Output Voltage Versions
01147607
CIN — 100 F, 75V, Aluminum Electrolytic
COUT — 1000 F, 25V, Aluminum Electrolytic
D1 — Schottky, MBR360
L1 — 100 H, Pulse Eng. PE-92108
R1 — 2k, 0.1%
R2 — 6.12k, 0.1%
Adjustable Output Voltage Version
01147608
where VREF = 1.23V, R1 between 1k and 5k.
FIGURE 2.
LM2576/LM2576HV
www.national.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2576T-ADJ-V | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Voltage-Mode SMPS Controller |
| LM2576TV | 制造商:未知厂家 制造商全称:未知厂家 功能描述:3.0A, 15V, Step-Down Switching Regulator |
| LM2576TV-005 | 功能描述:直流/直流开关调节器 5V 3A Buck PWM RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| LM2576TV-005G | 制造商:ON Semiconductor 功能描述: |
| LM2576TV-012 | 功能描述:直流/直流开关调节器 12V 3A Buck PWM RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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