Overview
The TEA1755LT/1Y, produced by NXP USA Inc., is a highly integrated power management IC designed for efficient and cost-effective power supply solutions. This device combines a controller for Power Factor Correction (PFC) and a flyback controller, making it suitable for a wide range of applications requiring up to 250 W of power. The TEA1755LT features advanced green functions to ensure high efficiency across all power levels, making it an ideal choice for environmentally friendly and reliable power supplies.
Key Specifications
| Parameter | Description |
|---|---|
| Package | SO16 plastic, small outline package; 16 leads; 1.27 mm pitch |
| Operating Temperature | -40°C to 155°C (TJ) |
| Power Rating | Up to 250 W |
| Mains Voltage Range | 70 V (AC) to 276 V (AC) |
| Switching Frequency | 110 kHz to 150 kHz |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| Number of Terminations | 16 |
| Supply Voltage (Vcc/Vdd) | 13.4 V to 38 V |
Key Features
- Integrated PFC and flyback controller for high efficiency and cost-effectiveness.
- Universal mains supply operation between 70 V (AC) to 276 V (AC).
- Dual-boost PFC with accurate maximum output voltage (NXP Semiconductors patented).
- High level of integration, resulting in very low external component counts.
- Adjustable PFC switch off delay and external PFC switch on and switch off override.
- Accurate PFC switch on and switch off control (NXP Semiconductors patent pending).
- On-chip start-up current source and reduced IC supply current during burst mode for high efficiency.
- Power-down functionality for very low standby power.
- Advanced burst mode to ensure high efficiency at low power and good standby power performance while minimizing audible transformer noise.
- Valley switching used in all operating modes.
Applications
The TEA1755LT is suitable for all applications requiring efficient and cost-effective power supply solutions up to 250 W. Specific applications include:
- Notebook adapters, benefiting from the high level of integration.
- Other consumer electronics requiring high efficiency and reliability in their power supplies.
Q & A
- What is the primary function of the TEA1755LT?
The TEA1755LT is a controller IC that combines a Power Factor Correction (PFC) controller and a flyback controller for efficient power supply solutions.
- What is the power rating of the TEA1755LT?
The TEA1755LT is designed to handle power supplies up to 250 W.
- What is the operating temperature range of the TEA1755LT?
The operating temperature range is -40°C to 155°C (TJ).
- What is the switching frequency range of the TEA1755LT?
The switching frequency range is 110 kHz to 150 kHz.
- What type of package does the TEA1755LT come in?
The TEA1755LT comes in a SO16 plastic, small outline package with 16 leads and a 1.27 mm pitch.
- What are the key green features of the TEA1755LT?
The key green features include on-chip start-up current source, reduced IC supply current during burst mode, and power-down functionality for very low standby power.
- How does the TEA1755LT optimize efficiency at low power levels?
The TEA1755LT optimizes efficiency at low power levels by switching to burst mode, where the internal IC supply current is minimized, and valley switching is used in all operating modes.
- What is the mains voltage range supported by the TEA1755LT?
The TEA1755LT supports a mains voltage range of 70 V (AC) to 276 V (AC).
- What are some typical applications for the TEA1755LT?
Typical applications include notebook adapters and other consumer electronics requiring high efficiency and reliability in their power supplies.
- How does the TEA1755LT reduce external component counts?
The TEA1755LT reduces external component counts through its high level of integration, combining PFC and flyback controllers in a single IC.
- What is the moisture sensitivity level (MSL) of the TEA1755LT?
The moisture sensitivity level (MSL) of the TEA1755LT is 3 (168 Hours).
