TEA1733CT Datasheet | NXP Semiconductors

description The TEA1733CT is a low cost Switched Mode Power Supply (SMPS) controller IC intended for flyback topologies. It operates in fixed frequency mode. To reduce Electro Magnetic Interference (EMI), frequency jitter has been implemented. Slope pensation is integrated for Continuous Conduction Mode (CCM) operation. The TEA1733CT includes Over Power Protection (OPP). This enables the controller to operate under overpower situations for a limited amount of time. Two pins, VINSENSE and PROTECT, are reserved for protection purposes. Input Under Voltage Protection (UVP) and Over Voltage Protection (OVP), output OVP and Over Temperature Protection (OTP) can be implemented using a minimal number of external ponents. At low power levels the primary peak current is set to 25 % of the maximum peak current and the switching frequency is reduced to limit switching losses. The bination of fixed frequency operation at high output power and frequency reduction at low output power provides high-efficiency over the total load range. The TEA1733CT enables low cost, highly efficient and reliable supplies for power requirements up to 75 W to be designed easily and with a minimum number of external ponents. 2. Features and benefits 2.1 Features - SMPS controller IC enabling low-cost applications - Large input voltage range (12 V to 30 V) - Very low supply current during start-up and restart (typically 10 A) - Low supply current during normal operation (typically 0.5 m A without load) - Overpower or high/low line pensation - Adjustable overpower time-out - Adjustable overpower restart timer - Fixed switching frequency with frequency jitter to reduce EMI - Frequency reduction with fixed minimum peak current to maintain high-efficiency at low output power levels - Slope pensation for CCM operation - Low and adjustable Over Current Protection (OCP) trip level NXP Semiconductors Green Chip SMPS control IC - Adjustable soft start operation - Two protection inputs (for example: for...