High Efficiency 1.5MHz, Step up Regulator

EC9211

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3G24N-Rev.P001

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 Voltage Range

●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

Applications

●Cell Phone and Smart Phone

●PDA, PMP, MP3

●Digital Camera

Pin Configurations

Figure 1 Pin Configuration of EC9211(Top View)