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12
Plasma TV Service Manual
14/03/2005
SDA
50
I/O
I
2
C-bus Serial Data input from (application)
P1.4
51
I/O
input/output for general use
P1.5
52
I/O
input/output for general use
12.8.
LM317
12.8.1. General Description
The LM117/LM217/LM317 are monolithic integrated circuit in TO-220, ISOWATT220, TO-3 and D
2
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.
12.8.2. 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
12.9.
LM393
12.9.1. Description
The LM393 series are dual independent precision voltage comparators capable of single or split supply
operation. These devices are designed to permit a common mode range-to-ground level with single
supply operation. Input offset voltage specifications as low as2.0 mV make this device an excellent
selection for many applications in consumer, automotive, and industrial electronics.
12.9.2. Features
Wide Single-Supply Range: 2.0 Vdc to 36 Vdc
Split-Supply Range: ±1.0 Vdc to ±18 Vdc
Very Low Current Drain Independent of Supply Voltage: 0.4 mA
Low Input Bias Current: 25 nA
Low Input Offset Current: 5.0 nA
Low Input Offset Voltage: 5.0 mV (max) LM293/393
Input Common Mode Range to Ground Level
Differential Input Voltage Range Equal to Power Supply Voltage
Output Voltage Compatible with DTL, ECL, TTL, MOS, and CMOS Logic Levels
ESD Clamps on the Inputs Increase the Ruggedness of the Device without Affecting Performance
NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes
Pb-Free Packages are Available
12.9.3. Pin Connections
Summary of Contents for HPT-4205
Page 1: ...42 PLASMA TV Built in Tuner SERVICE MANUAL...
Page 56: ...54 Plasma TV Service Manual 14 03 2005 15 CIRCUIT DIAGRAMS...
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