NXP Semiconductors TEA1207T
The TEA1207T is a fully integrated DC/DC converter. The device operates at 275 kHz switching frequency which enables the use of external components with minimum size. FUNCTIONAL DESCRIPTION Control mechanism The TEA1207T DC/DC converter is able to operate in PFM (discontinuous conduction) or PWM (continuous conductFEATURES
● Fully integrated DC/DC converter circuit● Up-or-down conversion
● Start-up from 1.85 V input voltage
● Adjustable output voltage
● High efficiency over large load range
● Power handling capability up to 0.85 A continuous average current
● 275 kHz switching frequency
● Low quiescent power consumption
● Synchronizing with external 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
● Cellular and cordless phones, Personal Digital Assistants (PDAs) and others ORDERING INFORMATION PACKAGE TYPE NUMBER NAME TEA1207T SO8DESCRIPTION
plastic small outline package; 8 leads; body width 3.9 mmGENERAL DESCRIPTION
TEA1207T● Supply voltage source for low-voltage chip sets
● Portable computers
● Battery backup supplies
● Cameras. Efficient, compact and dynamic power conversion is achieved using a novel digitally controlled concept like Pulse Width Modulation (PWM) or Pulse Frequency Modulation (PFM), integrated low RDSon CMOS power switches with low parasitic capacitances, and fully synchronous rectification.