LP6220A-Boost Converter

产品型号 输入电压(V) 输出电压(V) 开关频率(Hz) 效率(%) 最大开关电流(mA) 特征 封装 规格书
LP6220A 9.0-14 14/19 1M 90 2200 LNB power with 22K and LDO ESOP8

600mA LNB Power Supply & Control Voltage Regulator

General Description

Designed for analog and digital satellite receivers/sat-TV, the LP6220A is a adjustable voltage regulator, specifically to provide the 14V/19V power supply and the 22kHz tone signaling to the LNB converter in the antenna dish or to the multi-switch box. LP6220A consists of a BOOST converter with a internal power MOS running at 1MHz switching frequency and a LDO regulator which with push-pull output stage generates clean 22-kHz tone signal superimposed at the output even at zero loading. The EXTM can accept a DiSEqC command and transfer it symmetrically to the output to meet DiSEqC 1.x protocol. Other features include over temperature protection and under-voltage lockout (UVLO). The LP6220A is available in a space saving ESOP-8 package.


 LNB Power supply For DVB-S/S2/ABS
 Digital Set-Top-Box
 Satellite TV cards
 STB Satellite Receiver
 PC Card Satellite



 Low noise output to avoid sensitivity of Can
Tuner and DISH’s LNA dropping down
 Single chip solution on 700mVpp 22KHz EXTM
with 10μ s Trise/Tfall for less Transferring noise
 LNB Voltages (14V/19V) compatible with
common standards, Push-pull output stage
minimizes 14→19V and 19V→14V output
transition times
 External 22KHz EXTM input
 1MHz Switch Frequency Boost
Integrate Low Noise Linear Regulator
Under Voltage Lockout
 Output Short-Circuit Protection
 Output Over-Current Protection
 Over-Temperature Protection
 Available in ESOP-8
 RoHS Compliant and Halogen Free

Marking Information

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