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LM3478MAX/NOPB
IC REG CTRLR MULT TOPOLOGY 8SOIC
- Fabricant
- Mfr. Partie #LM3478MAX/NOPB
- Paquet SOIC (D)-8
- Fiche de données
- En stock6307
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Spécifications
| 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) |
Vue d'ensemble
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.
Expédition
Méthodes d'expéditionNous
offrir des services d'expédition mondiaux par DHL, FedEx, TNT, UPS ou tout autre expéditeur de votre choix.
Référence des frais d'expédition (DHL/FedEx):
DHL: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 2 à 5 jours ouvrables.
FedEx: Les frais d'expédition varient de 25 à 40 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.
UPS: Les frais d'expédition vont de 25 à 45 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.
TNT: Les frais d'expédition varient de 25 à 65 $ (0,5 kg), avec un délai de livraison estimé de 3 à 7 jours ouvrables.
EMS: Les frais d'expédition varient de 30 à 50 $ (0,5 kg), avec un délai de livraison estimé de 7 à 15 jours ouvrables.
Courrier aérien enregistré: Le coût d'expédition est de 2 à 4 $ (0,1 kg), avec un délai de livraison estimé de 5 à 20 jours ouvrables.
Paiements
Payment Methods
Le terme de paiement est 100% prépayé.
Actuellement, nous n'acceptons que les méthodes de paiement ci-dessous:
1. PayPal
2. Carte de crédit/débit
3. Transfert bancaire
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