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TEA1998TS/1Z

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TEA1998TS/1Z 技术参数

TEA1998TS

GreenChip synchronous rectifier controller

Rev. 1 — 16 February 2017

Product data sheet

COMPANY PUBLIC

1 General description

The TEA1998TS is a member of a new generation of Synchronous Rectifier (SR)

controller ICs for switched mode power supplies with adaptive gate drive for maximum

efficiency at any load.

The TEA1998TS is a dedicated controller IC for synchronous rectification on the

secondary side of flyback converters. It incorporates the sensing stage and driver stage

for driving the SR MOSFET, which is rectifying the output of the secondary transformer

winding.

The TEA1998TS can generate its own supply voltage for battery charging applications

with low output voltage or for applications with high-side rectification.

The TEA1998TS is fabricated in a Silicon-On-Insulator (SOI) process.

2 Features and benefits

2.1 Efficiency features

• Adaptive gate drive for maximum efficiency at any load

• Typical supply current in no-load operation below 250 μA

2.2 Application features

• Operates in an output voltage range between 10 V and 0 V

• Drain sense pin capable of handling input voltages up to 60 V

• Self-supplying for operation with low output voltage

• Self-supplying for high-side rectification without the use of an auxiliary winding

• Operates with standard and logic level SR MOSFETs

• Supports USB BC, QuickCharge and smart charging applications

• TSOP6 package

2.3 Control features

• Adaptive gate drive for fast turn-off at the end of conduction

• UnderVoltage LockOut (UVLO) with active gate pull-down

12 3 4 5 6 7...18

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