HT7727 - Holtek Semiconductor

HT7727 PFM Step-up DC/DC Converter

The HT77XX series is a set of PFM step-up DC/DC converter with high efficiency and low ripple. The series features extremely low start-up voltage and high output voltage accuracy. They require only three external components to provide a fixed output voltage of 1.8V, 2.7V, 3.0V, 3.3V, 3.7V or 5.0V. CMOS technology ensures ultra low supply current and makes th.

Features

· Low start-up voltage: 0.7V (Typ.), 0.9V (Max.)
· High efficiency: 85% (Typ.), VOUT³2.7V
· High output voltage accuracy: ±2.5%
· Output voltage: 1.8V, 2.7V, 3.0V, 3.3V, 3.7V, 5.0V
· Ultra low supply current IDD2: 4mA (Typ.)
· Low ripple and low noise
· Low shutdown current: 0.5mA (Typ.)
· TO-92, SOT-89, SOT-23 and SOT-25 package www.DataSheet4U.com Applications
· Palmtops/PDAs
· Portable communicators/Smartphones
· Cameras/Camcorders
· Battery-powered equipment General Description The HT77XX series is a set of PFM step-up DC/DC converter with high efficiency and low ripple. The series feat.