DESCRIPTION

The TK652xx 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 TK652xx 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 1.8, 2.1, or 2.4 V.

FEATURES

■ Guaranteed 0.9 V Operation

■ Very Low Quiescent Current

■ Internal Bandgap Reference

■ High Efficiency MOS Switching

■ Low Output Ripple

■ Laser-Trimmed Output Voltage

■ Low Output Voltage Monitor

■ Low Battery Monitor

■ 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