VESTEL 17MB45-2, Service Manual

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11.4 FDS8878
It is used for providing 5V tuner supply.
General Description
This N-Channel MOSFET has been designed specifically to improve the overall efficiency of
DC/DC converters using either synchronous or conventional switching PWM controllers. It
has been optimized for low gate charge, low rDS(on) and fast switching speed.
Features
rDS(on) = 14mΩ, VGS = 10V, ID = 10.2A
rDS(on) = 17mΩ, VGS = 4.5V, ID = 9.3A
High performance trench technology for extremely low rDS(on)
Low gate charge
High power and current handling capability
RoHS Compliant
Pin Configuration
11.5 ST24LC21 (Optional)
ST24LC21 is an EEPROM which is used for storing the VGA output resolution information.
General Description
The ST24LC21 is a 1K bit electrically erasable programmable memory (EEPROM),
organized by 8 Bits.This device can operate in two modes: Transmit Only mode and I2C
bidirectional mode. When powered, the device is in Transmit Only mode with EEPROM data
clocked out from the rising edge of the signal applied on VCLK. The device will switch to the
I2C bidirectional mode upon the falling edge of the signal applied on SCL pin. The
ST24LC21 cannot switch from the I2C bidirectional mode to the Transmit Only mode (except
when the power supply is removed). The device operates with a power supply value as low as
2.5V. Both Plastic Dual-in-Line and Plastic Small Outline packages are available.