器件名称: TEA1208T
功能描述: High efficiency DC/DC converter
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简 介:INTEGRATED CIRCUITS
DATA SHEET
TEA1208T High efficiency DC/DC converter
Product specication 2002 Nov 15
Philips Semiconductors
Product specication
High efciency 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 ……
