The KF9227 regulator is a wide input range, current mode, DC/DC converter which is capable of generating either positive or negative output voltages. It can be configured as either a boost, flyback, SEPIC or inverting converter. The KF9227 built in N-channel power MOSFET and fixed frequency oscill-ator , current-mode architecture results in st-able operation over a wide range of supply and output voltages.
The KF9227 regulator is special design for portable electronic equipment.
Features
Wide 3.6V to 24V Input Voltage Range
Positive or Negative Output Voltage Programming with a Single Feedback Pin
Current Mode Control Provides Excellent Transient Response
1.25V reference adjustable version
Fixed 400KHz Switching Frequency
Maximum 2A Switching Current
SW PIN Built in Over Voltage Protection
Excellent line and load regulation
EN PIN TTL shutdown capability
Internal Optimize Power MOSFET
High efficiency up to 90%
Built in Frequency Compensation
Built in Soft-Start Function
Built in Thermal Shutdown Function
Built in Current Limit Function
Available in SOP-8 package
Application
Automotive and Industrial Boost /Buck-Boost / Inverting Converters
Portable Electronic Equipment