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参数资料
| 型号： | LM2576T-12/LB03 |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5 |
| 封装： | GREEN, TO-220, 5 PIN |
| 文件页数： | 5/24页 |
| 文件大小： | 750K |
| 代理商： | LM2576T-12/LB03 |
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
相关PDF资料 |
PDF描述 |
|---|---|
| LM2576HVT-ADJFLOWLB03/NOPB | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, ZFM5 |
| LM2576SX-12/NOPB | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5 |
| LM2576SX-15/NOPB | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSSO5 |
| LM2576HVT-15FLOWLB03 | 3.5 A SWITCHING REGULATOR, 52 kHz SWITCHING FREQ-MAX, PSFM5 |
| LM2576T-3.3FLOWLB03 | 3.5 A SWITCHING REGULATOR, 52 kHz SWITCHING FREQ-MAX, PSFM5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LM2576T-12P | 制造商:National Semiconductor Corporation 功能描述:2576T-12 制造商:Texas Instruments 功能描述:2576T-12 |
| LM2576T-12-V | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Voltage-Mode SMPS Controller |
| LM2576T-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 |
| LM2576T15 | 制造商:Texas Instruments 功能描述:SWITCHING REG 3A 15V 2576 TO2205 |
| LM2576T-15/LB03 | 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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