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MAX1661 Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX1661 Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 16 page Active-Matrix Liquid Crystal Display (AMLCD) Supply _______________________________________________________________________________________ 7 PLL Compensation. Connect compensation network as in Figure 4. PLLC 9 Backplane Driver Negative Supply. Typically connected to PGND1. May be connected to a separate supply. BPVSS 10 Backplane Driver Output BPDRV 11 Backplane Driver Positive Supply. Typically connected to VOUT1 of DC-DC 1. May be connected to a separate supply. BPVDD 12 Backplane Driver Clock Input. See Table 1 for input frequency ranges. BPCLK 13 Analog Ground. Connect to PGND1 and PGND2. See Supply Connections and Layout section. GND 5 Supply Input to the IC. The input voltage range is +2.8V to +5.5V. IN 6 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. REF 4 Regulator Feedback Input, DC-DC 1. Regulates to 1.25V nominal. FB1 3 PIN 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. RDY 2 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 1 FUNCTION NAME Power Ground 1. Connect to PGND2. Source of internal LX1 N-channel MOSFET. PGND1 18 Drain of Internal LX1 N-Channel MOSFET LX1 19 Sets the BPCLK input frequency range for PLL synchronization. Connect to GND, REF, or IN. See Table 1. FPLL 20 DC-DC 2 Power Input. Source of Internal LX2P P-channel MOSFET. INP 14 Drain of Internal LX2P P-Channel MOSFET LX2P 15 Drain of Internal LX2N N-Channel MOSFET LX2N 16 Power Ground 2. Connect to PGND1. Source of internal LX2N N-channel MOSFET. PGND2 17 ______________________________________________________________Pin Description |
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