NXP Semiconductors TEA1204T
The TEA1204T is a fully integrated DC/DC converter circuit using the minimum amount of external components. It is intended to be used to supply electronic circuits with supply voltages of 3.3, 3.6 or 5.0 V from 2, 3 or 4 NiCd cell batteries or one LiIon battery at an output power level up to 3.6 W (typ.) continuously, or 8 W in GSM TDMA (1 : 8) burst mode. FUNCTIONAL DESCRIPTION Control mechanism The TEA1204T DC/DC converter is able to operate in discontinuous or continuous conduction operation.FEATURES
● Fully integrated DC/DC converter circuit● Up-or-down conversion, each in 2 different modes
● High efficiency (up to 96%) at high loads
● Output power up to 3.6 W (typ.) continuous, 8 W in GSM burst mode
● Low quiescent power consumption
● Burst mode input for optimal dynamic response to switching loads
● True current limit for LiIon battery compatibility
● Up to 100% duty cycle in down mode
● Shut-down function
● 8-pin SO package.
APPLICATIONS
● Cellular and cordless phones PDAs and others● Supply voltage source for low-voltage chip sets
● Portable computers
● Battery backup supplies
● Cameras. ORDERING INFORMATION PACKAGE TYPE NUMBER NAME TEA1204T SO8
DESCRIPTION
plastic small outline package; 8 leads; body width 3.9 mmGENERAL DESCRIPTION
TEA1204T 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 synchronous rectification.