Rainbow-electronics MAX1664 Bedienungsanleitung PDF herunterladen (Seite 7)

MAX1664

Active-Matrix Liquid Crystal Display

(AMLCD) Supply

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PLL Compensation. Connect compensation network as in Figure 4.PLLC9

Backplane Driver Negative Supply. Typically connected to PGND1. May be connected to a separate supply.BPV

Backplane Driver OutputBPDRV11

Backplane Driver Positive Supply. Typically connected to V

OUT1

of DC-DC 1. May be connected to a

separate supply.

BPV

Backplane Driver Clock Input. See Table 1 for input frequency ranges.BPCLK13

Analog Ground. Connect to PGND1 and PGND2. See

Supply Connections and Layout

section.GND5

Supply Input to the IC. The input voltage range is +2.8V to +5.5V.IN6

Regulator Feedback Input for Negative Output, DC-DC 2. Regulates to 0V nominal.FB2- 7

Regulator Feedback Input for Positive Output, DC-DC 2. Regulates to 1.25V nominal.FB2+8

Internal Reference Output. Connect a 0.22µF capacitor from this pin to GND. REF can source up to 50µA.REF4

Regulator Feedback Input, DC-DC 1. Regulates to 1.25V nominal.FB13

Ready Indicator Output, DC-DC 1 and DC-DC 2. Open-drain N-channel output becomes high impedance

when all three outputs are within 10% of regulation.

RDY2

Shutdown Input. Drive low to enter shutdown mode. Drive high or connect to IN for normal operation. All IC

sections are off when SHDN is low.

SHDN

FUNCTIONNAME

Power Ground 1. Connect to PGND2. Source of internal LX1 N-channel MOSFET.PGND118

Drain of Internal LX1 N-Channel MOSFETLX119

Sets the BPCLK input frequency range for PLL synchronization. Connect to GND, REF, or IN. See Table 1.FPLL20

DC-DC 2 Power Input. Source of Internal LX2P P-channel MOSFET.INP14

Drain of Internal LX2P P-Channel MOSFETLX2P15

Drain of Internal LX2N N-Channel MOSFETLX2N16

Power Ground 2. Connect to PGND1. Source of internal LX2N N-channel MOSFET.PGND217

______________________________________________________________Pin Description

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Rainbow-electronics MAX1664 Bedienungsanleitung Seite 7