tag 标签: 美国微源半导体

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    2010-3-2 16:34
    3753 次阅读|
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      电源管理单元PMU       电源管理单元是一种高低集成的、针对便携式应用的电源管理方案,即将传统分立的若干类电源管理器件整合在单个的封装之内,这样可实现更高的电源转换效率和更低功耗,及更少的组件数以适应缩小的板级空间。目前在该市场有TI、Philips Semiconductor、National Semiconductor和ST Microelectronics分别推出自己的产品,还有后起之秀美国微源半导体LowPowerSemi LPS。 例如 美国微源半导体的LP78085,LP78081 PMU    多通道电源管理单元 Part No. Vin(V) Special Features Output Current (Max)(mA) Shutdown Quiescent   Current (uA) Switching Frequency (max) Hz Efficiency (%) Output Voltage (max)(V) Packages Application   Pin to Pin compatible LP78085 2.7-5.5 Channel1: Charger    600 Yes 150 1.5M Linear 4.2 QFN-24 4*4mm PMP,BT,DV TV/MP/ Game   LTC3455 Channel2/3: Buck DC/DC Converters   600*2 Yes 95% 0.6 - 5.0   Channel4: Linear Regulator   300 Yes       Channel5: Large LDO Control for Host   1500 Yes   1.8,2.5,3.0,3.3   Channel6: Low Battery Detector   _ _       LP78084 2.7-5.5 Channel1: Li-ion Charger    800 Yes 150   Linear 4.2 TDFN-16 3*4mm PMP,BT,DV TV/MP/ Game   AAT2554 Channel2: Buck DC/DC Converters   800 Yes 1.5M 95% 0.6 - 5.0   Channel3: Linear Regulator 300 Yes     1.8,2.5,3.0,3.3   LP78082 2.7-6.0 Channel1: Buck DC/DC Converters   600 Yes 120 1.5M 95% 0.6 - 5.0 DFN10 3*3mm Module,DV Toys     Channel2:Linear Regulator 350     3.0,3.3   Channel3: Linear Regulator 350     3.0,3.3   LP78083 2.7-6.0 Channel1: Buck DC/DC Converters   600 Yes 120 1.5M 95% 0.6 - 5.0 DFN-8 2*2mm Module,DV Toys     Channel2:Linear Regulator   300     3.0,3.3   Channel3: Linear Regulator 300     3.0,3.3   LP78081 2.7-6.0 Channel1: Buck DC/DC Converters   600 Yes 120 1.5M 95% 0.6 - 5.0 SOT23-6 Toys,TV,MP     Channel2:Linear Regulator 300     3.0,3.3