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TEA1721BT Datasheet(PDF) 2 Page - NXP Semiconductors |
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TEA1721BT Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 14 page TEA1721BT All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved. Product data sheet Rev. 2.1 — 7 June 2012 2 of 14 NXP Semiconductors TEA1721BT HV start-up flyback controller with integrated MOSFET for 5 W Green features: Enables no-load power consumption < 20 mW Very low supply current in no-load condition with energy saver mode Incorporates a high voltage start-up circuit with zero current consumption under normal switching operation Available in halogen-free and Restriction of Hazardous Substances (RoHS) SO7 package Protective functions: OverVoltage Protection (OVP) on Feedback control (FB) pin with auto-restart UnderVoltage LockOut (UVLO) protection on IC supply pin OverTemperature Protection (OTP) Soft-start by reduced peak current for zero and low output voltage Demagnetization protection for guaranteed discontinuous conduction mode operation Open and short-circuit protection of the Feedback control (FB) pin Short-circuit protection of the charger output 1.3 Applications Battery chargers for cellular phones and other low power adapters up to 5 W Standby supply for TV and desktop PC Power supply for white goods applications 1.4 Quick reference data Table 1. Quick reference data Symbol Parameter Conditions Min Typ Max Unit Power switch (Pin: DRAIN) RDSon drain-source on-state resistance Ids = 30 mA; Tj = 25 °C 13 15.5 17 Ω Oscillator (Pins: DRAIN and SOURCE) fburst burst frequency burst frequency in CVB mode, without jitter 815 905 995 Hz fosc-high oscillator frequency High maximum switching frequency in CV and CC mode, without jitter 48 50.5 53 kHz Supply (Pin: VCC) VCC(startup) start-up supply voltage 15 17 19 V VCC(stop) stop supply voltage undervoltage lockout of IC 7.5 8.5 9.5 V |
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