器件名称: TEA1206
功能描述: High efficiency DC/DC converter
文件大小: 78.42KB 共16页
简 介:INTEGRATED CIRCUITS
DATA SHEET
TEA1206T High efficiency DC/DC converter
Preliminary specication Supersedes data of 1998 Mar 24 File under Integrated Circuits, IC03 1999 Sep 16
Philips Semiconductors
Preliminary specication
High efciency DC/DC converter
FEATURES Fully integrated DC/DC converter circuit Up-or-down conversion Start-up from 1.8 V input Adjustable output voltage High efficiency over large load range Power handling capability up to 1 A continuous average current 600 kHz switching frequency Low quiescent power consumption Synchronizes to external 9 to 20 MHz clock True current limit for Li-ion battery compatibility Up to 100% duty cycle in down mode Undervoltage lockout Shut-down function 8-pin SO package. APPLICATIONS
TEA1206T
Cellular and cordless phones, PDAs and others Supply voltage source for low-voltage chip sets Portable computers Battery backup supplies Cameras. GENERAL DESCRIPTION The TEA1206T (see Fig.1) is a fully integrated DC/DC converter circuit. Efficient, compact and dynamic power conversion is achieved using a novel, digitally controlled Pulse Width and Frequency Modulation (PWFM) like control concept, integrated low RdsON CMOS power switches with low parasitic capacitances, and fully synchronous rectification. The device operates at a high 590 kHz switching frequency which enables the use of minimum size external components. Deadlock is prevented by an on-chip undervoltage lockout circuit. Compatibility with Li-ion batte……
