E-CMOS EC9211
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.GENERAL DESCRIPTION
FEATURES
The EC9211 includes under-voltage lockout, current limit, and over-temperature shutdown preventing damage in the event of an output overload.●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
●(RoHS Compliant)
APPLICATIONS
Pin Configurations●Cell Phone and Smart Phone
●PDA, PMP, MP3
●Digital Camera
●Boost Regulators Figure 1 Pin Configuration of EC9211(Top View) E-CMOS Corp. ( Page 1 of 15 3G24N-Rev.P001 High Efficiency 1.5MHz, Step up Regulator EC9211 Pin
DESCRIPTION
Pin Number Pin NameDESCRIPTION
1 LX 2 GDN 3 FB 4 EN 5 IN 6 NC Switch pin. Connect this pin to inductor/diode here. GND Feedback Input. The device senses feedback voltage via FB and regulate the voltage at 1.23V.