TEA1733LTN1,118 NXP

TEA1733LT GreenChip SMPS control IC Rev. 8 16 July 2013 Product data sheet 1. General description The TEA1733LT/N1 is a low cost Switched Mode Power Supply (SMPS) controller ICs intended for flyback topologies. They operate in fixed frequency mode. To reduce ElectroMagnetic Interference (EMI), frequency jitter has been implemented. Slope compensation is integrated for Continuous Conduction Mode (CCM) operation. The TEA1733LT/N1 includes OverPower 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 UnderVoltage Protection (UVP) and OverVoltage Protection (OVP), output OVP and OverTemperature Protection (OTP) can be implemented using a minimal number of external components. 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 combination of fixed frequency operation at high output power and frequency reduction at low output power provides high-efficiency over the total load range. The TEA1733LT/N1 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 components. 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 mA without load) Overpower or high/low line compensation 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 compensation for CCM operation Low and adjustable OverCurrent Protection (OCP) trip levelTEA1733LT NXP Semiconductors GreenChip SMPS control IC Adjustable soft start operation Two protection inputs (e.g. for input UVP and OVP, OTP and output OVP) IC overtemperature protection 3. Applications All applications requiring efficient and cost-effective power supply solutions up to 75 W. 4. Ordering information Table 1. Ordering information Type number Package Name Description Version TEA1733LT/N1 SO8 plastic small outline package 8 leads body width 3.9 mm SOT96-1 TEA1733LT All information provided in this document is subject to legal disclaimers. NXP B.V. 2013. All rights reserved. Product data sheet Rev. 8 16 July 2013 2 of 21