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| 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： | 5/24页 |
| 文件大小： | 750K |
| 代理商： | LM2576T-ADJLB03/NOPB |
LM2576 Series Buck Regulator Design Procedure (Continued)
PROCEDURE (Adjustable Output Voltage Versions)
EXAMPLE (Adjustable Output Voltage Versions)
Given: V
OUT = Regulated Output Voltage VIN(Max) =
Maximum Input Voltage I
LOAD(Max) = Maximum Load
Current F = Switching Frequency (Fixed at 52 kHz)
Given: V
OUT = 10V VIN(Max) = 25V ILOAD(Max) = 3A F =
52 kHz
1. Programming Output Voltage (Selecting R1 and R2,
as shown in Figure 2) Use the following formula to select
the appropriate resistor values.
R
1 can be between 1k and 5k. (For best temperature
coefficient and stability with time, use 1% metal film resis-
tors)
1. Programming Output Voltage (Selecting R1 and R2)
R
2 = 1k (8.13 1) = 7.13k, closest 1% value is 7.15k
01147613
FIGURE 7. LM2576(HV)-ADJ
LM2576/LM2576HV
www.national.com
13
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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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