ACT50
ACT50 is Green Power Off-Line PWM Controller manufactured by Active-Semi.
Data Sheet Rev Pr A, 6/2006
Green Power Off-Line PWM Controller Active Switcher TM IC Family
Features
- Less than 300m W Standby Power: Exceeds the Latest CEC, Blue Angle and Energy Star Requirements
- Supports NPN Emitter-Drive for Lowest Total Solution Cost
- Fast Response Current Mode PWM
- Very Low Line/Load Regulation
- 65k Hz Switching Frequency
- Line pensation
- Programmable Current Limit
- 50μA Start Up Current
- Tiny SOT23-5 and DIP-8 Packages
APPLICATIONS
- Battery Chargers
- Power Adapters
- Standby Power Supplies
- Appliances
- Universal Off-Line Power Supplies
GENERAL DESCRIPTION
The ACT50 is a pact, high performance off-line power supply controller that is ideal for use in next generation high performance universal input adapters and chargers. The ACT50 Features an advanced current-mode PWM control architecture that achieves the smallest form-factor and fast transient response yet requires less than 300m W of standby power, surpassing even the latest requirements of the California Energy mission (CEC), the European Union Blue Angel, and US Energy Star standards.
The ACT50 is optimized for use in the flyback topology, and requires just a low cost optocoupler and reference device, such as the '431, to provide fully adjustable CC/CV operation.
This device additionally Features a proprietary low EMI driver that can be patible with both external MOSFET and NPN transistors, and supports emitter-switching to achieve the lowest possible solution cost.
The ACT50 is available in tiny SOT23-5 or DIP-8 packages.
HIGH VOLTAGE DC
Active-Semi, Inc.
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ISET
OPTOCUPLER
Figure 1. Simplified Application Circuit -1-
.micro-bridge....
