DESCRIPTION

The TK651xx low power step-up DC-DC converter is designed for portable battery powered systems, capable of operating from a single battery cell down to 0.9 V. The TK651xx provides the power switch and the control circuit for a boost converter. The converter takes a DC input and boosts it up to a regulated 2.7, 3.0 or 3.3 V output .

FEATURES

■ Guaranteed 0.9 V Operation

■ Very Low Quiescent Current

■ Internal Bandgap Reference

■ High Efficiency MOS Switching

■ Low Output Ripple

■ Microprocessor Reset Output

■ Laser-Trimmed Output Voltage

■ Laser-Trimmed Oscillator

■ Undervoltage Lockout

■ Regulation by Pulse Burst Modulation (PBM)

APPLICATIONS

■ Battery Powered Systems

■ Cellular Telephones

■ Pagers

■ Personal Communications Equipment

■ Portable Instrumentation

■ Portable Consumer Equipment

■ Radio Control Systems