Micropower
Voltage Mode PWM
FEATURES • Low 85µA Startup Current
BLOCK DIAGRAM
• Low 300µA Operating Current
• Automatically Disabled Startup Preregulator
• Programmable Minimum Duty Cycle with Cycle Skipping
• Programmable Maximum Duty Cycle
• Output Current 1A Peak Source and Sink
• Programmable Soft Start
• Programmable Oscillator Frequency
• External Oscillator Synchronization Capability
application INFO available
UCC1581 UCC2581 UCC3581
Note: Pin Connection shown for 14-pin Package
UDG-95011-1
DESCRIPTION
The UCC3581
voltage mode pulse width modulator is designed to control low power isolated DC - DC converters in applications such as Subscriber Line Power (ISDN I.
430).
Pr...