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50
SDA
51
P1.4
52
P1.5
LM317
12.5.
12.5.1. General Description
The LM117/LM217/LM317 are monolithic integrated circuit in TO-220, ISOWATT220, TO-3 and D
PAK packages intended for use as positive adjustable voltage regulators.
They are designed to supply more than 1.5A of load current with an output voltage adjustable over a
1.2 to 37V range.
The nominal output voltage is selected by means of only a resistive divider, making the device
exceptionally easy to use and eliminating the stocking of many fixed regulators.
12.5.2. Features
• Output voltage range : 1.2 To 37V
• Output current In excess of 1.5A
• 0.1% Line and Load Regulation
• Floating Operation for High Voltages
• Complete Series of Protections : Current Limiting, Thermal Shutdown And Soa Control
ST24LC21
12.6.
12.6.1. 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 I
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 I
applied on SCL pin. The ST24LC21 can not switch from the I
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.
12.6.2. 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
• Page Write (Up To 8 Bytes)
• Byte, random and sequential read modes
• Self timed programming cycle
• Automatic address incrementing
• Enhanced ESD/Latch up
• Performances
27" TFT TV Service Manual
I/O
I
C-bus Serial Data input from (application)
2
I/O
input/output for general use
I/O
input/output for general use
C bidirectional mode upon the falling edge of the signal
2
C bus compatible
2
C bidirectional mode. When powered,
2
C bidirectional mode to the Transmit Only
2
10
2
05/09/2005
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