Low-Power Off-line Digital PWM Controller
Not Recommended For New Designs
iW1689
Low-Power Off-line Digital PWM Controller
1.0 Features
• Primary-side feedback...
Description
Not Recommended For New Designs
iW1689
Low-Power Off-line Digital PWM Controller
1.0 Features
Primary-side feedback eliminates opto-isolators and simplifies design
Multi-mode operation for highest overall efficiency
Very tight output voltage regulation
No external compensation components required
Complies with CEC/EPA/IEC no load power consumption and average efficiency regulations
Built-in secondary constant-current control with primaryside feedback
Low start-up current (8 µA typical)
Built-in soft start
Built-in short circuit protection
AC line under/overvoltage and output overvoltage protection
Fixed switching frequency
Available in a space-saving SOT-23 package
2.0 Description
The iW1689 is a high performance AC/DC power supply controller which uses digital control technology to build sensorless peak current mode PWM flyback power supplies. The device provides high efficiency along with a number of key built-in prote...
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