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参数资料
| 型号： | A8287SLBTR |
| 厂商： | Allegro Microsystems Inc |
| 文件页数： | 1/18页 |
| 文件大小： | 0K |
| 描述： | IC REG LNB SUPPLY/CTRL 24-SOIC |
| 标准包装： | 1,000 |
| 应用： | 转换器，模拟和数字式卫星信号接收器 |
| 输入电压： | 9 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： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 带卷 (TR) |
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
Packages
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.
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
LX
VCP
BOOST
C3
VREG
220 nF
Internal
Regulator
BOOST
Feedback
Charge
OSC In
Boost Converter
Pump
VPUMP
Overcurrent
EXTM
OSC
100 mV
DISABLE
R1
15 Ω
L2
V DD
R3 R4 R5
Clock
Divider
22 kHz
Tone
Generator
Tracking
Regulator
LNB
D2
33 μH
1.5 μF
C7
220 nF
C6
SDA
TCAP
SCL
ADD
Output
Voltage
Select
GM
TOUT
6.8 nF
C8
220 Ω R2
10 nF
Fault Monitor
TDI
C9
IRQ
Overcurrent
TSD
Overcurrent
22 kHz Tone
Detector
R6
V DD
A8285-DS, Rev. F
Undervoltage
TDO
相关PDF资料 |
PDF描述 |
|---|---|
| A8290SETTR-T | IC VOLTAGE REG SGL LNB 28-QFN |
| A8291SETTR-T | IC VOLTAGE REG SGL LNB 28-QFN |
| A8292SETTR-T | IC REG LNB SUPPLY/CONTROL 28-MLP |
| A8293SETTR-T | IC REG LNB BOOST/LINEAR 28QFN |
| A8436EEJTR-T | IC PHOTOFLASH CHARGER 10-MLP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| A8287SLBTR-T | 功能描述:IC LNB SUPPLY/VOLTAGE REG 24SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:2,000 系列:- 应用:控制器，DSP 输入电压:4.5 V ~ 25 V 输出数:2 输出电压:最低可调至 1.2V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:30-TFSOP（0.173"，4.40mm 宽） 供应商设备封装:30-TSSOP 包装:带卷 (TR) |
| A8290 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Single LNB Supply and Control Voltage Regulator |
| A8290SETTR-T | 功能描述:IC VOLTAGE REG SGL LNB 28-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| A8290SETTR-TB | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Single LNB Supply and Control Voltage Regulator |
| A8291 | 制造商:ALLEGRO 制造商全称:Allegro MicroSystems 功能描述:Single LNB Supply and Control Voltage Regulator |
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