SC2201
Description
SC2201 is a high performance current mode
PWM control for offline flyback converter
applications. The IC has built-in General Primary
Side CC control, which simplifies isolated power
supply design that requires CC regulation of the
output.
In SC2201, PWM switching frequency with
shuffling is fixed to 65KHz and is trimmed to tight
range. The IC has built-in green and burst mode
control for light and zero loadings, which can
achieve less than 75mW standby power for sub
60W applications.
SC2201 integrated functions and protections of
Under Voltage Lockout (UVLO), VDD over
Voltage Protection (VDD OVP), Cycle-by- cycle
Current Limiting (OCP), Short Load
Protection(SLP), Over Load Protection (OLP),
On-Chip Thermal Shutdown (OTP), Soft Start,
VDD Clamping etc.
SC2201 is offered in SOT23-6 package.
Features
General Primary Side Constant-Current(CC)
control Supports DCM and CCM Operation.
±5% CC Regulation, ±1% CV Regulation
Fast Dynamic Response.
CC Algorithm Compensates
Less than 75mW standby power
Current Mode Control
Low Startup and Operation Current
Green Mode and Burst Mode Control
Built-in Frequency Shuffling
Fixed 65KHz Switching Frequency
Built-in Leading Edge Blanking
Built-in Slope Compensation
On-chip Thermal Shutdown
Cycle-by-Cycle Current Limiting
Applications
Chargers and Adapter
Motor Driver Power Supply
