HA16178P Renesas Technology, HA16178P Datasheet - Page 13

• Manufacturer Part Number: HA16178P
• Description: Power Factor Correction Controller IC
• Manufacturer: Renesas Technology

HA16178P/FP
Description of Functions
1. UVL Circuit
The UVL circuit monitors the Vcc voltage. When the voltage is lower than 9.0 V, the IC is stopped. When the voltage
is higher than 10.5 V, IC is started.
When operation of the IC is stopped by the UVL circuit, the driver circuit output is fixed low, output of VREF is
stopped, and the oscillator is stopped.
REJ03D0903-0100 Rev.1.00 Jun 12, 2007
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VREF
OUT
VCC
CT
10.5 V (VH)
5 V
4.0 V
CAO
Figure 1 UVL Operation
9 V (VL)