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A8291 Datasheet(PDF) 3 Page - Allegro MicroSystems

Part # A8291
Description  Single LNB Supply and Control Voltage Regulator
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A8291 Datasheet(HTML) 3 Page - Allegro MicroSystems

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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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