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A8287SLBTR-T PDF预览

A8287SLBTR-T

更新时间: 2024-01-28 02:16:56
品牌 Logo 应用领域
急速微 - ALLEGRO 光电二极管
页数 文件大小 规格书
18页 474K
描述
Analog Circuit, 1 Func, PDSO24, BATWING, LEAD FREE, PLASTIC, SOIC-24

A8287SLBTR-T 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:BATWING, LEAD FREE, PLASTIC, SOIC-24针数:24
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.83模拟集成电路 - 其他类型:ANALOG CIRCUIT
JESD-30 代码:R-PDSO-G24JESD-609代码:e3
长度:15.29 mm湿度敏感等级:3
功能数量:1端子数量:24
最高工作温度:85 °C最低工作温度:-20 °C
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP24,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):NOT SPECIFIED
电源:10/16 V认证状态:Not Qualified
座面最大高度:2.64 mm子类别:Power Management Circuits
最大供电电流 (Isup):7 mA最大供电电压 (Vsup):16 V
最小供电电压 (Vsup):10 V标称供电电压 (Vsup):12 V
表面贴装:YES温度等级:OTHER
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:7.49 mm
Base Number Matches:1

A8287SLBTR-T 数据手册

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A8285 and A8287  
LNB Supply and Control Voltage Regulator  
Description  
Features and Benefits  
Intended for analog and digital satellite receivers, the LNB  
(lownoiseblock)converterregulator isamonolithiclinearand  
switching voltage regulator, specifically designed to provide  
• LNB selection and standby function  
• Provides up to 500 mA load current  
• Two-wire serial I2C interface  
power and interface signals to an LNB downconverter, via  
coaxial cable.  
• 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  
The device uses a 2-wire bidirectional serial interface,  
compatible with the I2C (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.Bothdevicesarealsoavailableinlead(Pb)freeversions,  
with 100% matte tine leadframe plating.  
Packages  
16-pin SOIC  
(A8285)  
24-pin SOIC  
(A8287)  
Functional Block Diagram  
L1  
D1  
VIN  
C10  
100 nF  
C1  
C5  
C2  
C4  
100 µF  
33 µF  
33 µH  
100 nF  
100 nF  
VIN  
LX  
VCP  
BOOST  
VREG  
220 nF  
Internal  
Regulator  
BOOST  
Feedback  
C3  
Charge  
Pump  
OSC In  
VPUMP  
Boost Converter  
OSC  
Overcurrent  
DISABLE  
R1  
15 Ω  
100 mV  
EXTM  
L2  
33 µH  
LNB  
22 kHz  
Tone  
Generator  
R3 R4 R5  
Clock  
Divider  
1.5 µF  
C7  
220 nF  
C6  
VDD  
Tracking  
Regulator  
D2  
SDA  
TCAP  
Output  
Voltage  
Select  
SCL  
ADD  
6.8 nF  
C8  
GM  
220 Ω R2  
TOUT  
TDI  
10 nF  
C9  
Fault Monitor  
Overcurrent  
TSD  
IRQ  
Overcurrent  
22 kHz Tone  
Detector  
VDD  
R6  
TDO  
Undervoltage  
A8285-DS, Rev. F  

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