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LM3478MAX/NOPB
IC REG CTRLR MULT TOPOLOGY 8SOIC
- 제조업체
- Mfr.부분 #LM3478MAX/NOPB
- 패키지 SOIC (D)-8
- 데이터시트
- 재고 있음6307
100% 원래 &새로운
배송 준비 24 시간
365 일 보장
RFQ 및더 많은 할인
사양
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Boost, Flyback, SEPIC |
| NumberofOutputs | 1 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 2.97V ~ 40V |
| Frequency-Switching | 100kHz ~ 1MHz |
| DutyCycle(Max) | 100% |
| SynchronousRectifier | No |
| ClockSync | No |
| ControlFeatures | Enable, Frequency Control |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
개요
Description
Key features of the LM3478 include its high switching frequency capability up to 1 MHz, which allows for the use of smaller external components, leading to more compact designs. It also features a high output drive capability suitable for driving N-channel MOSFETs, and built-in protection features such as thermal shutdown and current limiting. The device uses a current mode control scheme, which provides improved transient response and ease of loop compensation.
The "NOPB" designation indicates that this version is lead-free and complies with RoHS standards. Overall, the LM3478MAX/NOPB offers a flexible and efficient solution for designers looking to implement boost or similar power conversion topologies in their systems.
Features
1. Wide Input Voltage Range: It supports an input voltage range from 2.97V to 40V, making it suitable for a variety of applications.
2. High Switching Frequency: Offers a programmable switching frequency up to 1 MHz, allowing for smaller external components and compact designs.
3. Current Mode Control: Utilizes a current mode control scheme that provides superior load and line regulation.
4. Adjustable Output Voltage: The device enables output voltage regulation with easy programmability and flexibility.
5. Low Shutdown Current: Features a low shutdown current consumption of 5 µA, enhancing energy efficiency when the device is not in use.
6. Internal Compensation: Integrated compensation simplifies the design process and helps to reduce the number of external components needed.
7. Thermal Shutdown: Includes thermal shutdown protection to prevent overheating and ensure reliability.
8. Peak Current Limit: Offers an adjustable peak current limit for added protection and control over the design parameters.
These features make the LM3478MAX/NOPB a robust choice for designers needing a reliable and efficient power management solution.
Package
Pinout
This device comes in an 8-pin package, specifically the SOIC-8 (Small Outline Integrated Circuit) form factor. Here's a brief overview of the pin functions:
1. COMP: Compensation pin for stability and transient response.
2. FB: Feedback pin for voltage regulation by monitoring the output.
3. AGND: Analog ground reference for signal ground connections.
4. ISEN: Current sense pin for measuring the inductor current.
5. SW: Switch pin for connecting to the inductor and diode.
6. VCC: Supply voltage pin providing power to the IC.
7. RST (or UVLO): Reset or undervoltage lockout pin.
8. GND: Ground pin for power ground connections.
The LM3478 provides flexibility and efficiency for designing various power supply applications, supporting a wide input voltage range, and offering features like current-mode control for better dynamic performance.
Manufacturer
Application
Equivalent
1. LM3478MM/NOPB - Another variant by Texas Instruments.
2. LT3757 - From Analog Devices, a high-performance boost controller.
3. MC34063A - From ON Semiconductor, a DC-DC converter.
4. LTC1871 - From Analog Devices, a wide input range controller.
Always check the specific requirements and datasheets to ensure compatibility.
배송
배송 방법We
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배송 요금 참조 (DHL/FedEx):
DHL은: 배송 비용은 $25-$45 (0.5kg)에서 2-5 영업일의 추정적 배달 시간이 있습니다.
FedEx는: 배송 비용은 $25-$40 (0.5kg)에서 3-7 영업일의 추정적 배달 시간을 가지고 있습니다.
UPS는: 배송 비용은 $25-$45 (0.5kg)에서 3-7 영업일의 추정적 배달 시간을 가지고 있습니다.
TNT는: 배송 비용은 $25-$65 (0.5kg)에서 3-7 영업일의 추정적 배달 시간을 가지고 있습니다.
EMS는: 배송 비용은 $30-$50 (0.5kg)에서 7-15 영업일의 추정적 배달 시간을 제공합니다.
등록된 항공우편: 배송 비용은 $2-$4 (0.1kg), 예상 배달 시간 5-20 영업일.
지불
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