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LTC3891EUDC#TRPBF
IC REG CTRLR BUCK 20QFN
- Fabricante
- Mfr. Parte #LTC3891EUDC#TRPBF
- Paquete
- Hoja de datos LTC3891EUDC#TRPBF DataSheet
- En stock9386
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Especificaciones
| 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 | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 20-WFQFN Exposed Pad |
| Supplier Device Package | 20-QFN (3x4) |
| Base Product Number | LTC3891 |
Descripción general
Description
Key features include:
- Wide Input Voltage Range: Typically operates from 4.5V to 60V, making it suitable for various power sources.
- Synchronous Operation: Ensures high efficiency by using both high-side and low-side MOSFETs.
- Adjustable Output Voltage: The output voltage can be set from 0.8V to 60V, providing flexibility for different applications.
- High Switching Frequency: Up to 750 kHz, allowing for smaller inductors and capacitors, which can reduce the overall footprint.
- Current Mode Control: Ensures stable operation and simplifies compensation.
- Integrated Features: Includes soft-start, overvoltage protection, and fault protection capabilities.
This device is ideal for designs requiring high efficiency and reliability in compact spaces.
Features
1. Wide Input Voltage Range: Operates from 4V to 60V, making it suitable for various applications.
2. Output Voltage Range: Adjustable output voltage from 0.8V to 15V.
3. High Efficiency: Capable of achieving efficiencies exceeding 95% under typical load conditions.
4. Current Mode Control: Provides fast transient response and ease of compensation.
5. Integrated MOSFETs: Reduces external component count and PCB area.
6. PWM and PFM Operation: Allows for versatility in operating modes to optimize efficiency.
7. Soft-Start Feature: Prevents inrush current during startup.
8. Power Good Output: Monitors output voltage and indicates when it's within the desired range.
9. Thermal Protection: Includes thermal shutdown to prevent overheating.
10. Compact Package: Available in a 20-lead 4mm × 5mm LQFN package, suitable for space-constrained applications.
These features make the LTC3891EUDC#TRPBF ideal for industrial, automotive, and telecommunications applications.
Package
Pinout
The key functions include:
1. PWM Control: Implements a constant frequency, current mode PWM control.
2. Voltage Reference: Provides a stable 0.8V reference for output voltage.
3. Compensation: Built-in compensation for stability and transient response.
4. Phase Control: Supports interleaved operation for improved efficiency and output ripple.
5. Current Sense: Monitors inductor current for current limiting and control.
6. Power Good: Indicates when the output voltage is within the specified range.
7. Soft-Start: Manages the startup behavior to limit inrush current.
8. Frequency Setting: External resistor sets the switching frequency.
9. Synchronization: Allows synchronization with an external clock.
This device is suitable for high-efficiency power management in various applications.
Manufacturer
Application
Equivalent
Envío
Métodos de envíoNosotros
ofrecer servicios de envío globales a través de DHL, FedEx, TNT, UPS, o cualquier otro expediente de su elección.
Referencia de tarifas de envío (DHL/FedEx):
DHL: El costo de envío oscila entre $25-$45 (0.5kg), con un tiempo de entrega estimado de 2-5 días hábiles.
FedEx: El costo de envío oscila entre $25-$40 (0.5kg), con un tiempo de entrega estimado de 3-7 días hábiles.
UPS: El costo de envío oscila entre $25-$45 (0.5kg), con un tiempo de entrega estimado de 3-7 días hábiles.
TNT: El costo de envío oscila entre $25-$65 (0.5kg), con un tiempo de entrega estimado de 3-7 días hábiles.
EMS: El costo de envío oscila entre $30-$50 (0.5kg), con un plazo de entrega estimado de 7-15 días hábiles.
Correo aéreo registrado: El costo de envío es de $2-$4 (0.1kg), con un tiempo de entrega estimado de 5-20 días hábiles.
Pagos
Payment Methods
El plazo de pago es 100% prepagado.
Actualmente, solo aceptamos los siguientes métodos de pago:
1. de PayPal
2. Tarjeta de crédito/débito
3. Transferencia bancaria
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