参数资料
型号: A8291SETTR-T
厂商: Allegro Microsystems Inc
文件页数: 2/19页
文件大小: 0K
描述: IC VOLTAGE REG SGL LNB 28-QFN
标准包装: 9,000
应用: 转换器,模拟和数字式卫星信号接收器
输入电压: 8 V ~ 16 V
输出数: 1
输出电压: 12.7 V ~ 20.4 V
工作温度: -20°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-VFQFN 裸露焊盘
供应商设备封装: 28-QFN/MLP 裸露焊盘(5x5)
包装: 带卷 (TR)
A8291
Description (continued)
Single LNB Supply and Control Voltage Regulator
time source. A DiSEqC? filter bypass switch is also integrated, to
minimize the output impedance during tone generation.
A comprehensive set of fault registers are provided, which comply
with all the common standards, including: overcurrent, thermal
shutdown, undervoltage, cable disconnect, power not good, and
Selection Guide
tone detect.
The device uses a 2-wire bidirectional serial interface, compatible
with the I 2 C? standard, that operates up to 400 kHz.
The A8291 is supplied in a lead (Pb) free 28-lead MLP/QFN.
Part Number
A8291SETTR-T b
Packing a
7 in. reel, 1500 pieces/reel
12 mm carrier tape
Description
ET package, MLP/QFN surface mount
0.90 mm nominal height
a Contact Allegro
for additional packing options.
b Leadframe
plating 100% matte tin.
Absolute Maximum Ratings
Characteristic
Load Supply Voltage, VIN pin
Output Current 1
Output Voltage, BOOST pin
Output Voltage, LNB, BFI, BFO pins
Output Voltage, LX pin
Output Voltage, VCP pin
Logic Input Voltage, EXTM and BFC pins
Logic Input Voltage, other pins
Logic Output Voltage
Operating Ambient Temperature
Junction Temperature
Storage Temperature
Symbol
V IN
I OUT
T A
T J (max)
T stg
Surge 2
Conditions
Rating
30
Internally
Limited
–0.3 to 33
–1 to 33
–0.3 to 30
–0.3 to 41
–0.3 to 5
–0.3 to 7
–0.3 to 7
–20 to 85
150
–55 to 150
Units
V
A
V
V
V
V
V
V
V
°C
°C
°C
1 Output
current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed the specified
current ratings, or a junction temperature, T J , of 150°C.
2 Use Allegro recommended Application circuit.
Package Thermal Characteristics*
Package
ET
R θ JA
(°C/W)
32
PCB
4-layer
* Additional information is available on the Allegro website.
Allegro MicroSystems, LLC
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
2
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