tea1753lt NXP Semiconductors, tea1753lt Datasheet - Page 2

• Manufacturer Part Number: tea1753lt
• Description: Tea1753lt Greenchip Iii Smps Control Ic
• Manufacturer: NXP Semiconductors

NXP Semiconductors
2. Features and benefits
3. Applications
TEA1753LT
Objective data sheet
2.1 Distinctive features
2.2 Green features
2.3 PFC green features
2.4 Flyback green features
2.5 Protection features
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Integrated PFC and flyback controller
Universal mains supply operation (70 V AC to 276 V AC)
Dual boost PFC with accurate maximum output voltage (NXP patented)
High level of integration, resulting in a very low external component count and a
cost-effective design
Adjustable PFC switch-off delay
On-chip start-up current source
Power down functionality for very low standby power
Valley/zero voltage switching for minimum switching losses (NXP patented)
Frequency limitation to reduce switching losses
PFC is switched off when a low load is detected at the flyback output
Valley switching for minimum switching losses (NXP patented)
Frequency reduction with adjustable minimum peak current at low power operation to
maintain high efficiency at low output power levels
Safe restart mode for system fault conditions
Continuous mode protection by means of demagnetization detection for both
converters (NXP patented)
UnderVoltage Protection (UVP) (foldback during overload)
Accurate OverVoltage Protection (OVP) for both converters (adjustable for flyback
converter)
Mains voltage independent OverPower Protection (OPP)
Open control loop protection. The open-loop protection on the flyback converter is
latched.
IC OverTemperature Protection (OTP)
Low and adjustable OverCurrent Protection (OCP) trip level for both converters
General purpose input for latched protection, e.g. to be used for system
OverTemperature Protection (OTP)
The device can be used in all applications that require an efficient and cost-effective
power supply solution up to 250 W. Notebook adapters, in particular, benefit from this
high level of integration
All information provided in this document is subject to legal disclaimers.
Rev. 01 — 4 March 2011
GreenChip III SMPS control IC
TEA1753LT
© NXP B.V. 2011. All rights reserved.
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