Altera LCD Multimedia HSMC Instrukcja Użytkownika Pobierz pdf (Strona 39)

2–31 Altera Corporation

LCD Multimedia HSMC August 2008

Power Supply

Power Supplies

The power supply block distributes clean power from the 12 V and 3.3 V

input supply (from HSMC connector) to the LCD Multimedia HSMC

through on-board regulators. To provide various voltage options, the

board uses several Linear Technologies’ regulators. Switching regulators

are used for digital circuits and linear regulators are used for analog

circuits.

Table 2–24 below lists Power Supplies board reference and

manufacturing information.

Board regulators are used to generate the voltages listed in Tables 2–25

Table 2–24. Power Supplies Manufacturing Information

Board Reference Device Description Manufacturer

Manufacturer Part

Number

Manufacturer

Website

REG1 DC/DC Converter +/-

5V for LCD Display

Linear Technology LT3461ES6#TRPBF www.linear.com

REG2 DC/DC Converter for

+/- Voltages for LCD

Display Backlight

Linear Technology LT3461ES6#TRPBF www.linear.com

REG3 Linear regulator for

5V output

Linear Technology LT1117CTS-5#PBF www.linear.com

REG4 Linear regulator for

2.5V output

Linear Technology LT1963AES8#PBF www.linear.com

REG5 Linear regulator for

1.8V output

Linear Technology LT1963AES8#PBF www.linear.com

Table 2–25. Board Regulators

Output

Voltage (V)

Variance

(+/-mV)

MAX Current

(A)

Regulator

Board

Reference

Linear Technologies

Part #

Where Used

5V 50 mV 115mA REG1 LT3461ES6#TRPBF LCD Supply

26.4V 100mV - REG2 LT3461ES6#TRPBF LED Backlight

5V 50mV 800mA REG3 LT1117CTS-5#PBF PS2 Interface Supply

2.5V 27mV 1.5A REG4 LT1963AES8#PBF CPLD Bank Supply,

Level Shifter Supply

1.8V 27mV 1.5A REG5 LT1963AES8#PBF Video Decoder Supply

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 50 51

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