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A8287SLBTR

Description
IC reg lnb supply/ctrl 24soic
CategoryAnalog mixed-signal IC    The signal circuit   
File Size476KB,18 Pages
ManufacturerAllegro
Websitehttp://www.allegromicro.com/
Download Datasheet Parametric Compare View All

A8287SLBTR Overview

IC reg lnb supply/ctrl 24soic

A8287SLBTR Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerAllegro
Parts packaging codeSOIC
package instructionSOP, SOP24,.4
Contacts24
Reach Compliance Codecompli
Analog Integrated Circuits - Other TypesANALOG CIRCUIT
JESD-30 codeR-PDSO-G24
JESD-609 codee0
length15.29 mm
Humidity sensitivity level3
Number of functions1
Number of terminals24
Maximum operating temperature85 °C
Minimum operating temperature-20 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP24,.4
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)240
power supply10/16 V
Certification statusNot Qualified
Maximum seat height2.64 mm
Maximum supply current (Isup)15 mA
Maximum supply voltage (Vsup)16 V
Minimum supply voltage (Vsup)10 V
Nominal supply voltage (Vsup)12 V
surface mountYES
Temperature levelOTHER
Terminal surfaceTIN LEAD
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width7.49 mm
A8285 and A8287
LNB Supply and Control Voltage Regulator
Features and Benefits
• LNB selection and standby function
• Provides up to 500 mA load current
• Two-wire serial I
2
C interface
• Built-in tone oscillator, factory-trimmed to 22 kHz;
facilitates DiSEqC™ 2.0 encoding
• Auxiliary modulation input
• 22 kHz tone detector facilitates DiSEqC™ decoding
(A8287 only)
• Tracking switch-mode power converter for lowest
dissipation
• LNB overcurrent protection and diagnostics
• Internal overtemperature protection
• LNB voltages (16 possible levels) compatible with all
common standards
Description
Intended for analog and digital satellite receivers, the LNB
(low noise block) converter regulator is a monolithic linear and
switching voltage regulator, specifically designed to provide
power and interface signals to an LNB downconverter, via
coaxial cable.
The device uses a 2-wire bidirectional serial interface,
compatible with the I
2
C (Inter-C bus) standard, that operates
up to 400 kHz.
The A8285 is supplied in a 16-lead plastic power SOIC with
internally fused leads for thermal dissipation. The A8287 is
supplied in a 24-lead plastic power SOIC with internally fused
leads. Both devices are also available in lead (Pb) free versions,
with 100% matte tine leadframe plating.
Packages
16-pin SOIC
(A8285)
24-pin SOIC
(A8287)
Functional Block Diagram
V
IN
C10
100 nF
C1
33 µF
L1
33 µH
D1
C5
100 nF
C2
100 nF
C4
100 µF
VIN
VREG
C3
220 nF
Internal
Regulator
OSC In
Boost Converter
LX
VCP
BOOST
BOOST
Feedback
Charge
Pump
VPUMP
Overcurrent
OSC
EXTM
100 mV
DISABLE
R1
15
Ω
L2
33 µH
1.5 µF
C7
220 nF
C6
R3 R4 R5
V
DD
SDA
SCL
ADD
Clock
Divider
22 kHz
Tone
Generator
LNB
Tracking
Regulator
D2
TCAP
Output
Voltage
Select
GM
TOUT
TDI
6.8 nF
C8
220
Ω
R2
10 nF
C9
R6
TDO
V
DD
IRQ
Fault Monitor
Overcurrent
TSD
Undervoltage
Overcurrent
22 kHz Tone
Detector
A8285-DS, Rev. F

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Description IC reg lnb supply/ctrl 24soic IC lnb supply/voltage reg 16soic IC reg lnb supply/ctrl 16soic IC reg lnb supply/ctrl 16soic IC reg lnb supply/ctrl 24soic IC lnb supply/voltage reg 24soic
Is it lead-free? Contains lead Lead free Contains lead Contains lead Contains lead Lead free
Is it Rohs certified? incompatible conform to conform to conform to incompatible conform to
Maker Allegro Allegro Allegro Allegro Allegro Allegro
Parts packaging code SOIC SOIC SOIC SOIC SOIC SOIC
package instruction SOP, SOP24,.4 BATWING, LEAD FREE, PLASTIC, SOIC-16 BATWING, PLASTIC, SOIC-16 BATWING, PLASTIC, SOIC-16 SOP, SOP24,.4 BATWING, LEAD FREE, PLASTIC, SOIC-24
Contacts 24 16 16 16 24 24
Reach Compliance Code compli unknow compli compli compli unknow
Analog Integrated Circuits - Other Types ANALOG CIRCUIT ANALOG CIRCUIT ANALOG CIRCUIT ANALOG CIRCUIT ANALOG CIRCUIT ANALOG CIRCUIT
JESD-30 code R-PDSO-G24 R-PDSO-G16 R-PDSO-G16 R-PDSO-G16 R-PDSO-G24 R-PDSO-G24
JESD-609 code e0 e3 e3 e3 e0 e3
length 15.29 mm 10.21 mm 10.21 mm 10.21 mm 15.29 mm 15.29 mm
Number of functions 1 1 1 1 1 1
Number of terminals 24 16 16 16 24 24
Maximum operating temperature 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C
Minimum operating temperature -20 °C -20 °C -20 °C -20 °C -20 °C -20 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP SOP SOP SOP SOP
Encapsulate equivalent code SOP24,.4 SOP16,.4 SOP16,.4 SOP16,.4 SOP24,.4 SOP24,.4
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 240 NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED 240 NOT SPECIFIED
power supply 10/16 V 10/16 V 10/16 V 10/16 V 10/16 V 10/16 V
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum seat height 2.64 mm 2.64 mm 2.64 mm 2.64 mm 2.64 mm 2.64 mm
Maximum supply current (Isup) 15 mA 7 mA 15 mA 15 mA 15 mA 7 mA
Maximum supply voltage (Vsup) 16 V 16 V 16 V 16 V 16 V 16 V
Minimum supply voltage (Vsup) 10 V 10 V 10 V 10 V 10 V 10 V
Nominal supply voltage (Vsup) 12 V 12 V 12 V 12 V 12 V 12 V
surface mount YES YES YES YES YES YES
Temperature level OTHER OTHER OTHER OTHER OTHER OTHER
Terminal surface TIN LEAD Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) TIN LEAD Matte Tin (Sn)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature 30 NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED 30 NOT SPECIFIED
width 7.49 mm 7.49 mm 7.49 mm 7.49 mm 7.49 mm 7.49 mm
Humidity sensitivity level 3 3 3 3 - 3
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