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LTC3855IUJ#TRPBF
+StücklisteIC REG CTRLR BUCK 40QFN
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HerstellerAnalog Devices Inc.
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Herstellerteil #LTC3855IUJ#TRPBF
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Datenblatt LTC3855IUJ#TRPBF DataSheet
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Auf Lager3501
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Spezifikationen
| Attribut | Wert |
| Series | PolyPhase® |
| Part Status | Active |
| Output Type | Transistor Driver |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Number of Outputs | 2 |
| Output Phases | 2 |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 38V |
| Frequency - Switching | 250kHz ~ 770kHz |
| Duty Cycle (Max) | 95% |
| Synchronous Rectifier | Yes |
| Clock Sync | No |
| Control Features | Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start, Tracking |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 40-WFQFN Exposed Pad |
| Supplier Device Package | 40-QFN (6x6) |
| Base Product Number | LTC3855 |
Übersicht
Description
Key specifications include a wide input voltage range (4.5V to 60V), adjustable output voltage down to 0.8V, and the capability to handle load currents up to 10A per channel. The LTC3855 also supports features like programmable switching frequency, soft-start, and synchronization capabilities, which help to optimize system performance.
Additionally, it offers protection features such as overvoltage, undervoltage lockout, and thermal shutdown, ensuring reliable operation in various environments. This makes the LTC3855 suitable for industrial, automotive, and telecommunications applications, where efficient power conversion is critical.
Equivalent
Features
1. Dual-Phase Operation: Supports dual-phase operation for higher output current with lower ripple voltage.
2. Wide Input Voltage Range: Operates from 4.5V to 60V, making it suitable for various applications.
3. Frequency Synchronization: Features a programmable switching frequency from 250kHz to 1MHz, allowing synchronization with other devices.
4. Current Mode Control: Ensures stable operation over a wide range of input and output conditions.
5. Integrated Compensation: Reduces external component count and simplifies design.
6. Power Good Indicator: Provides feedback for system monitoring and alerts when output voltage is out of range.
7. Thermal Protection: Includes thermal shutdown to prevent overheating.
8. Adjustable Output Voltage: Capable of generating output voltages down to 0.8V.
These features make the LTC3855 suitable for applications such as telecommunications, industrial, and automotive power supplies.
Pinout
1. Power Inputs: Pins for connecting input voltage (VIN) and ground (PGND).
2. Control & Feedback: Pins for feedback voltage (VFB), error amplifier (COMP), and compensation (CFB).
3. Switching Control: Pins for switching node (SW) and gate drive control (TG and BG).
4. Current Sensing: Pins for current sensing and control (CSN and CSP).
5. Enable/Shutdown: EN pin for enabling or disabling the controller.
6. Timing & Synchronization: Pins for frequency setting (RT) and synchronization (SYNC).
7. Other Functions: Various pins for soft-start, tracking, and other auxiliary functions.
This controller is designed for high efficiency and flexibility in power management applications, making it suitable for a range of electronic devices.
Manufacturer
The LTC3855 is a highly integrated dual-output synchronous step-down switching regulator controller, designed for high-efficiency power management applications. Analog Devices focuses on developing products that improve performance, reduce power consumption, and enhance system reliability.
With a strong emphasis on research and development, Analog Devices has established itself as a leader in the semiconductor industry, providing solutions that cater to complex and demanding application requirements. The company is recognized for its commitment to quality and performance, making it a trusted partner for engineers and manufacturers worldwide.
Application
1. Telecommunications: For powering RF amplifiers and other communication equipment.
2. Industrial Equipment: Used in automation systems and process control.
3. Data Centres: Efficient power conversion for servers and networking hardware.
4. Consumer Electronics: Power management in laptops, tablets, and gaming consoles.
5. Automotive: Power regulation for infotainment systems and advanced driver-assistance systems (ADAS).
The device is known for its high efficiency and flexibility in managing various load conditions.