14
TFT TV Service Manual
11.11.3. Pin
Description
11.12. L6562
11.12.1. Features
• TRANSITION-MODE CONTROL OF PFC PRE-REGULATORS
• PROPRIETARY MULTIPLIER DESIGN FOR MINIMUM THD OF AC INPUT CURRENT
• VERY PRECISE ADJUSTABLE OUTPUT OVERVOLTAGE PROTECTION
• ULTRA-LOW (
70μA) START-UP CURRENT
• LOW (
4 mA) QUIESCENT CURRENT
• EXTENDED IC SUPPLY VOLTAGE RANGE
• ON-CHIP FILTER ON CURRENT SENSE
• DISABLE FUNCTION
• 1% (@ Tj = 25 °C) INTERNAL REFERENCE VOLTAGE
11.12.2. Description
The L6562 is a current-mode PFC controller operating in Transition Mode (TM). Pin-to-pin compatible
with the predecessor L6561, it offers improved performance. The highly linear multiplier includes a
special circuit, able to reduce AC input current distortion, that allows wide-range-mains operation with
an extremely low THD, even over a large load range.
Содержание 32LD8600
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