VESTEL 17MB15E-5, Руководство по обслуживанию

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ST24LC21 can not switch from the I
2
C 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.
15.22.2.
Features
• 1 million Erase/Write cycles
• 40 years data retention
• 2.5V to 5.5V single supply voltage
• 400k Hz compatibility over the full range of supply voltage
• Two wire serial interface I
2
C bus compatible
• Page Write (Up To 8 Bytes)
• Byte, random and sequential read modes
• Self timed programming cycle
• Automatic address incrementing
• Enhanced ESD/Latch up
• Performances
15.22.3.
Pin connections
DIP Pin connections CO Pin connections
NC: Not connected
Signal names
SDA Serial data Address Input/Output
SCL Serial Clock (I
2
C mode)
V
cc
Supply voltage
V
ss
Ground
VCLK Clock transmit only mode
15.23. LM2576
15.23.1.
General Description
The LM2576 series of regulators are monolithic integrated circuits ideally suited for easy and convenient design of a step–
down switching regulator (buck converter). All circuits of this series are capable of driving a 3.0 A load with excellent line
and load regulation.
These devices are available in fixed output voltages of 3.3 V, 5.0 V, 12 V, 15 V, and an adjustable output
version. These regulators were designed to minimize the number of external components to simplify the power
supply design. Standard series of inductors optimized for use with the LM2576 are offered by several different
inductor manufacturers.
Since the LM2576 converter is a switch–mode power supply, its efficiency is significantly higher in comparison
with popular three–terminal linear regulators, especially with higher input voltages. In many cases, the power
dissipated is so low that no heatsink is required or its size could be reduced dramatically.
A standard series of inductors optimized for use with the LM2576 are available from several different
manufacturers. This feature greatly simplifies the design of switch–mode power supplies.
The LM2576 features include a guaranteed ±4% tolerance on output voltage within specified input voltages and
output load conditions, and ±10% on the oscillator frequency (±2% over 0°C to 125°C). External shutdown is
included, featuring 80 mA (typical) standby current. The output switch includes cycle–by–cycle current limiting,
as well as thermal shutdown for full protection under fault conditions.
15.23.2.
Features
• 3.3 V, 5.0 V, 12 V, 15 V, and Adjustable Output Versions