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TEA1208T

NXP
Part Number TEA1208T
Manufacturer NXP
Description High efficiency DC/DC converter
Published Apr 16, 2005
Detailed Description INTEGRATED CIRCUITS DATA SHEET TEA1208T High efficiency DC/DC converter Product specification 2002 Nov 15 Philips Semi...
Datasheet PDF File TEA1208T PDF File

TEA1208T
TEA1208T

Overview
INTEGRATED CIRCUITS DATA SHEET TEA1208T High efficiency DC/DC converter Product specification 2002 Nov 15 Philips Semiconductors Product specification High efficiency DC/DC converter FEATURES • Fully integrated DC/DC converter circuit • Up-or-down conversion • Start-up from 1.
85 V input voltage • Adjustable output voltage • High efficiency over a wide range of loads • Power handling capability up to 0.
42 A continuous average current • 275 kHz switching frequency • Low quiescent power consumption • External clock synchronization • True current limit for Li-ion battery compatibility • Up to 100% duty cycle in down conversion • Undervoltage lockout • Shut-down function • 8-pin SO package.
APPLICATIONS • Cellular and cordless phones, Personal Digital Assistants (PDAs) and others ORDERING INFORMATION PACKAGE TYPE NUMBER NAME TEA1208T SO8 DESCRIPTION plastic small outline package; 8 leads; body width 3.
9 mm GENERAL DESCRIPTION TEA1208T • Supply voltage source for low-voltage chip sets • Portable computers • Battery backup supplies • Cameras.
The TEA1208T is a fully integrated DC/DC converter.
Efficient, compact and dynamic power conversion is achieved using special digital control concepts - Pulse Width Modulation (PWM) and Pulse Frequency Modulation (PFM), integrated low RDSon CMOS power switches with low parasitic capacitances, and fully synchronous rectification.
The device operates at a switching frequency of 275 kHz requiring only minimum sized external components.
Deadlock is prevented by an on-chip undervoltage lockout circuit.
Efficient behaviour during short load peaks and compatibility with Li-ion batteries is guaranteed by an accurate current limiting function.
VERSION SOT96-1 2002 Nov 15 2 Philips Semiconductors Product specification High efficiency DC/DC converter QUICK REFERENCE DATA SYMBOL Voltage levels UP CONVERSION; pin U/D = LOW VI VO VI(start) VI VO GENERAL Vfb Iq Ishdwn ILX ∆Ilim feedback voltage 1.
19 1.
24 input voltage output voltage start-up...


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