LTC3882EUJ-1#TRPBF

PMIC - Voltage Regulators - DC DC Switching Controllers

The LTC3882EUJ-1#TRPBF is a high-efficiency, high-frequency synchronous step-down switching regulator controller suitable for high-end application fields such as automotive, consumer, communications, and aerospace. This product provides efficiency, ease of use, and small solution size. It is a unique DCDC controller with its internal features and specifications.

Features

• Output voltage range: 0.8 V to 5.5 V
• Input voltage range: 3 V to 5.5 V
• Fixed switching frequency of up to 4 MHz
• 100% duty cycle (DC) mode for low output voltages
• External synchronization from 200 kHz to 4 MHz
• Provides a true 90stop ripple in the output
• On-board power MOSFET optimized for low voltage applications, provides lower conduction losses
• Comprehensive, integrated protection features
• User-programmable settings for adjustable switching frequency, soft-start, enable, and power saving mode

Applications

• Power-supply voltage rails for communications, consumer, and aerospace applications
• High-end PoE (Power over Ethernet) applications
• On-board power conversion
• Automotive systems
• Portable devices

Working Principle

The LTC3882EUJ-1#TRPBF operates by regulating the input voltage against changes in the input voltage or output load. When the input voltage or the output load changes, the regulator adjusts the output voltage by controlling an external MOSFET using Pulse Width Modulation (PWM). Theduty cycle of the PWM signal is adjusted to keep the output voltage and the load current constant.

The LTC3882EUJ-1#TRPBF features a unique architecture which enables it to operate at higher efficiencies with smaller solution size. This high-efficiency operation is achieved by minimizing switching noise and wasted switching power while optimizing the power transfer and minimizing power losses.

The LTC3882EUJ-1#TRPBF also has built-in protection circuitry to protect the external MOSFET against overheating or under voltage lockout. It also provides for a true 90stop ripple in the output and a low output noise over a wide range of load and input conditions. This makes it ideal for high-end application fields.

Conclusion

The LTC3882EUJ-1#TRPBF is a robust, high-efficiency DC-DC switching regulator designed for high-end application fields such as automotive, consumer, communications, and aerospace. Features such as a fixed switching frequency of up to 4 MHz and a true 90stop ripple in the output, combined with comprehensive integrated protection features, make it ideal for high-end applications. In addition, the unique architecture of this regulator allows it to operate at higher efficiencies than other step-down regulators and provides low output noise.