General Description

The EC9211 is a fixed switching frequency (1.5MHz typical), current-mode, step-up regulator with an integrated N-channel MOSFET.

The device allows the usage of small inductors and output capacitors for portable devices.

The current-mode control scheme provides fast transient response and good output voltage accuracy.

The EC9211 includes under-voltage lockout, current limit, and over-temperature shutdown preventing damage in the event of an output overload.

Features

●Wide 2.7V to 6V Input VoltageRange

●Built‐in 0.2Ω N‐Channel MOSFET

● Built‐in Soft‐Start

● High Efficiency up to 90%

● <1mA Quiescent Current During Shutdown

● Current‐Mode Operation

● Stable with Ceramic Output Capacitors

● Fast Transient Response

● Current‐Limit Protection

● Over‐Temperature Protection with Hysteresis

● Available in a SOT23‐6 Package

● Lead Free and Green Devices Available

●(RoHS Compliant)

Applications

●Cell Phone and Smart Phone

●PDA, PMP, MP3

●Digital Camera

●Boost Regulators