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LTC3891MPFE#TRPBF
IC REG CTRLR BUCK 20TSSOP
- Fabricant
- Mfr. Partie #LTC3891MPFE#TRPBF
- Paquet
- Fiche de données LTC3891MPFE#TRPBF DataSheet
- En stock6740
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Spécifications
| Part Status | Active |
| Output Type | Transistor Driver |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Number of Outputs | 1 |
| Output Phases | 1 |
| Voltage - Supply (Vcc/Vdd) | 4V ~ 60V |
| Frequency - Switching | 105kHz ~ 835kHz, 350kHz ~ 535kHz |
| Duty Cycle (Max) | 99% |
| Synchronous Rectifier | Yes |
| Clock Sync | No |
| Control Features | Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) Exposed Pad |
| Supplier Device Package | 20-TSSOP-EP |
| Base Product Number | LTC3891 |
Vue d'ensemble
Description
Key features include a low minimum on-time of 95ns, allowing high step-down ratios at high frequencies, and it supports output voltages as low as 0.8V. It offers programmable fixed switching frequencies from 50kHz to 900kHz and can be synchronized to an external clock. The LTC3891 also supports Burst Mode operation for high efficiency at light loads and has a no-load quiescent current of 50μA.
It includes onboard protection features like overvoltage, overcurrent, and thermal shutdown to ensure reliability. The package type, MPFE#TRPBF, indicates a thermally enhanced 28-lead TSSOP package, suitable for space-constrained applications. This controller is ideal for systems requiring robust and flexible power management solutions.
Features
Key features include:
- Up to 99% duty cycle for low dropout applications.
- Adjustable output voltage ranging from 0.8V to 24V.
- A programmable fixed frequency from 50kHz to 900kHz, or synced to an external clock.
- Comprehensive protection features, including overvoltage, overcurrent, and thermal shutdown.
- It supports a wide operating temperature range, specifically suited for demanding environments.
The LTC3891MPFE#TRPBF is available in a thermally enhanced 28-lead TSSOP package, ensuring efficient heat dissipation. This controller is ideal for use in automotive, industrial, and distributed power systems where high efficiency and reliable performance are crucial.
Package
Pinout
The function of the LTC3891 is to provide a highly efficient and easily customizable solution for high-power voltage regulation. It operates over a wide input voltage range and supports synchronous rectification, which improves efficiency. The device is capable of outputting up to several tens of amperes, depending on external components and conditions, making it suitable for a variety of applications in telecommunications, automotive, and other high-power electronics.
Key features include programmable output voltage, adjustable operating frequency, and the ability to synchronize with an external clock. The device also provides features like soft-start, overcurrent protection, and efficient operation at light loads through Burst Mode® operation.
Manufacturer
Application
Equivalent
1. Texas Instruments: LM3150 - Simple Switcher Synchronous Buck Controller.
2. Maxim Integrated: MAX17503 - High-Efficiency, Synchronous Step-Down DC-DC Converter.
3. ON Semiconductor: NCP302155 - DC/DC Switching Controller.
4. Microchip: MCP16331 - High-Speed Step-Down Regulator.
These alternatives offer similar functionalities in step-down regulation with varying specifications. Always check compatibility with your specific application requirements.
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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