LM2575BT中文资料PDF规格书
LM2575BT规格书详情
General Description
The LM2575 series of monolithic integrated circuits provide all the active functions for a step-down (buck) switching regulator. Fixed versions are available with a 3.3V, 5V, 12V, fixed output. Adjustable versions have an output voltage range from 1.23V to 37V. Both versions are capable of driving a 1A load with excellent line and load regulation.These regulators are simple to use because they require a minimum number of external components and include internal frequency compensation and a fixed-frequency oscillator. The LM2575 series offers a high efficiency replacement for popular three-terminal adjustable linear regulators. It substantially reduces the size of the heat sink, and in many cases no heat sink is required. A standard series of inductors available from several different manufacturers are ideal for use with the LM2575 series. This
feature greatly simplifies the design of switch-mode power supplies.
Features
• 3.3V, 5V, 12V, and adjustable output versions
• Voltage over specified line and load conditions:
Fixed version: ±3 max. output voltage
Adjustable version: ±2 max. feedback voltage
• Guaranteed 1A output current
• Wide input voltage range: 4V to 40V
• Wide output voltage range 1.23V to 37V
• Requires only 4 external components
• 52kHz fixed frequency internal oscillator
• Low power standby mode IQ typically < 200µA
• 80 efficiency (adjustable version typically > 80)
• Uses readily available standard inductors
• Thermal shutdown and current limit protection
• 100 electrical thermal limit burn-in
Applications
• Simple high-efficiency step-down (buck) regulator
• Efficient pre-regulator for linear regulators
• On-card switching regulators
• Positive to negative converter (inverting Buck-Boost)
• Isolated Flyback Converter using minimum number of
external components
• Negative Boost Converter
产品属性
- 产品编号:
LM2575BT
- 制造商:
Microchip Technology
- 类别:
集成电路(IC) > 稳压器 - DC-DC 开关稳压器
- 包装:
卷带(TR)
- 功能:
降压
- 输出配置:
正
- 拓扑:
降压
- 输出类型:
可调式
- 输出数:
1
- 电压 - 输入(最小值):
4V
- 电压 - 输入(最大值):
40V
- 电压 - 输出(最小值/固定):
1.23V
- 电压 - 输出(最大值):
37V
- 电流 - 输出:
1A
- 频率 - 开关:
52kHz
- 同步整流器:
无
- 工作温度:
-40°C ~ 125°C(TJ)
- 安装类型:
通孔
- 封装/外壳:
TO-220-5
- 供应商器件封装:
TO-220-5
- 描述:
IC REG BUCK ADJ 1A TO220-5
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
MREL/麦瑞 |
23+ |
NA/ |
8500 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 | ||
MICREL/麦瑞 |
TO220 |
265209 |
假一罚十原包原标签常备现货! |
询价 | |||
MICREL-麦瑞 |
24+25+/26+27+ |
TO-220-5 |
18800 |
一一有问必回一特殊渠道一有长期订货一备货HK仓库 |
询价 | ||
MICREL |
23+ |
TO220*5 |
8500 |
原装正品,现货销售 |
询价 | ||
MIC |
TO-220 |
92 |
询价 | ||||
NS |
23+ |
TO220 |
2000 |
全新进口原装现货热卖! |
询价 | ||
Microchip(微芯) |
18+ |
9800 |
代理进口原装/实单价格可谈 |
询价 | |||
MICREL/麦瑞 |
2021+ |
TO220 5 |
100500 |
一级代理专营品牌!原装正品,优势现货,长期排单到货 |
询价 | ||
Microchip |
22+ |
TO-220-5 |
9000 |
原厂渠道,现货配单 |
询价 | ||
MICREL |
2023+ |
TO-220 |
4675 |
全新原厂原装产品、公司现货销售 |
询价 |