Hyundai HPT-4205, Руководство по обслуживанию

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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