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A8291 Datasheet(PDF) 3 Page - Allegro MicroSystems |
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A8291 Datasheet(HTML) 3 Page - Allegro MicroSystems |
3 / 18 page Single LNB Supply and Control Voltage Regulator A8291 3 Allegro MicroSystems, Inc. 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com PAD 21 20 19 18 17 16 15 1 2 3 4 5 6 7 NC NC BFC NC NC NC NC BOOST VCP TCAP NC TDO EXTM TDI Terminal List Table Name Number Function ADD 11 Address select BFC 19 Bypass FET control BFI 24 Bypass FET input (connect to LNB) BFO 22 Bypass FET output BOOST 1 Tracking supply voltage to linear regulator EXTM 6 External modulation input GND 8 Signal ground GNDLX 27 Boost switch ground IRQ 14 Interrupt request LNB 28 Output voltage to LNB LX 26 Inductor drive point NC 4, 13, 15-18, 20, 21, 23 No connection PAD Pad Exposed pad; connect to the ground plane, for thermal dissipation SCL 12 I2C™-compatible clock input SDA 10 I2C™-compatible data input/output TCAP 3 Capacitor for setting the rise and fall time of the LNB output TDI 7 Tone detect input TDO 5 Tone detect output VCP 2 Gate supply voltage VIN 25 Supply input voltage VREG 9 Analog supply Device Pin-out Diagram (Top View) |
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