LT1371 500kHz High Efficiency 3A Switching Regulator
The LT™1371 is a monolithic high frequency current mode switching regulator. It can be operated in all standard switching configurations including boost, buck, flyback, forward, inverting and “Cuk”. A 3A high efficiency switch is included on the die, along with all oscillator, control and protection circuitry. The LT1371 typically consumes only 4mA quiescent current and has higher efficiency than previous parts. High frequency switching allows for very small inductors to be used. New design techniques increase flexibility and maintain ease of use. Switching is easily synchronized to an external logic level source. A logic low on the Shutdown pin reduces supply current to 12µA. Unique error amplifier circuitry can regulate positive or negative output voltage while maintaining simple frequency compensation techniques. Nonlinear error amplifier transconductance reduces output overshoot on start-up or overload recovery. Oscillator frequency shifting protects external components during overload conditions
产品特点 Features
- Faster Switching with Increased Efficiency
- Uses Small Inductors: 4.7µH
- All Surface Mount Components
- Low Minimum Supply Voltage: 2.7V
- Quiescent Current: 4mA Typ
- Current Limited Power Switch: 3A
- Regulates Positive or Negative Outputs
- Shutdown Supply Current: 12µA Typ
- Easy External Synchronization
参数
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应用
- Boost Regulators
- Laptop Computer Supplies
- Multiple Output Flyback Supplies
- Inverting Supplies
典型应用图
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LT1371 订购信息和价格参考Package Variations and Pricing
| 器件型号 |
封装 |
引脚 |
温度 |
价格 (以 1 ~ 99 片为批量) |
价格 (以 1000 片为批量) * |
| LT1371CR |
DD PAK |
7 |
C |
$6.40 |
$5.15 |
| LT1371CR#PBF |
DD PAK |
7 |
C |
$6.40 |
$5.15 |
| LT1371CR#TR |
DD PAK |
7 |
C |
|
$5.27 |
| LT1371CR#TRPBF |
DD PAK |
7 |
C |
|
$5.27 |
| LT1371CSW |
SO |
20 |
C |
$7.10 |
$5.65 |
| LT1371CSW#PBF |
SO |
20 |
C |
$7.10 |
$5.65 |
| LT1371CSW#TR |
SO |
20 |
C |
|
$5.75 |
| LT1371CSW#TRPBF |
SO |
20 |
C |
|
$5.75 |
| LT1371CT7 |
TO-220 |
7 |
C |
$6.40 |
$5.15 |
| LT1371CT7#PBF |
TO-220 |
7 |
C |
$6.40 |
$5.15 |
| LT1371HVCR |
DD PAK |
7 |
C |
$6.85 |
$5.45 |
| LT1371HVCR#PBF |
DD PAK |
7 |
C |
$6.85 |
$5.45 |
| LT1371HVCR#TR |
DD PAK |
7 |
C |
|
$5.57 |
| LT1371HVCR#TRPBF |
DD PAK |
7 |
C |
|
$5.57 |
| LT1371HVCSW |
SO |
20 |
C |
$7.50 |
$6.00 |
| LT1371HVCSW#PBF |
SO |
20 |
C |
$7.50 |
$6.00 |
| LT1371HVCSW#TR |
SO |
20 |
C |
|
$6.10 |
| LT1371HVCSW#TRPBF |
SO |
20 |
C |
|
$6.10 |
| LT1371HVCT7 |
TO-220 |
7 |
C |
$6.85 |
$5.45 |
| LT1371HVCT7#PBF |
TO-220 |
7 |
C |
$6.85 |
$5.45 |
| LT1371HVIR |
DD PAK |
7 |
I |
$8.10 |
$6.45 |
| LT1371HVIR#PBF |
DD PAK |
7 |
I |
$8.10 |
$6.45 |
| LT1371HVIR#TR |
DD PAK |
7 |
I |
|
$6.57 |
| LT1371HVIR#TRPBF |
DD PAK |
7 |
I |
|
$6.57 |
| LT1371HVISW |
SO |
20 |
I |
$8.75 |
$7.00 |
| LT1371HVISW#PBF |
SO |
20 |
I |
$8.75 |
$7.00 |
| LT1371HVISW#TR |
SO |
7 |
I |
|
$7.10 |
| LT1371HVISW#TRPBF |
SO |
7 |
I |
|
$7.10 |
| LT1371HVIT7 |
TO-220 |
7 |
I |
$8.10 |
$6.45 |
| LT1371HVIT7#PBF |
TO-220 |
7 |
I |
$8.10 |
$6.45 |
| LT1371IR |
DD PAK |
7 |
I |
$7.60 |
$6.15 |
| LT1371IR#PBF |
DD PAK |
7 |
I |
$7.60 |
$6.15 |
| LT1371IR#TR |
DD PAK |
7 |
I |
|
$6.27 |
| LT1371IR#TRPBF |
DD PAK |
7 |
I |
|
$6.27 |
| LT1371ISW |
SO |
20 |
I |
$8.35 |
$6.65 |
| LT1371ISW#PBF |
SO |
20 |
I |
$8.35 |
$6.65 |
| LT1371ISW#TR |
SO |
20 |
I |
|
$6.75 |
| LT1371ISW#TRPBF |
SO |
20 |
I |
|
$6.75 |
| LT1371IT7 |
TO-220 |
7 |
I |
$7.60 |
$6.15 |
| LT1371IT7#PBF |
TO-220 |
7 |
I |
$7.60 |
$6.15 |
LT1371 数据手册及相关资料下载
- 数据手册(英文) : LT1371 - 500kHz High Efficiency 3A Switching Regulator.PDF
- 应用指南 (英文) : AN75 - Circuitry for Signal Conditioning and Power Conversion.PDF
- 设计要点 (英文) : DN125 - Monolithic DC/DC Converters Break Speed Limits to Shrink Board Space.PDF
- 设计要点 (英文) : DN164 - High Power CCFL Backlight Inverter for Desktop LCD Displays.PDF
- 设计要点 (英文) : DN183 - The LT1370: A 500kHz, 6A Monolithic Boost Converter.PDF
- 可靠性数据 : R388 Reliability Data .PDF
