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回复于 2017-10-24
16#
5）SGM2019-3.3 圣邦微电子（SG Micro） -- LDO
The SGM2019 series low-power, low-noise, low-dropout, CMOS linear voltage regulators operate from a 2.5V to 5.5V input voltage. They are the perfect choice for low voltage, low power applications. A low ground current makes this part attractive for battery operated power systems. The SGM2019 series also offer ultra low dropout voltage to prolong battery life in portable electronics. Systems requiring a quiet voltage source, such as RF applications, will benefit from the SGM2019 series’ ultra low output noise (30μVRMS) and high PSRR. An external noise bypass capacitor connected to the device’s BPpin can further reduce the noise level.
The output voltage is preset to voltages in the range of 1.2V to 5.0V. Other features include a 10nA logic controlled shutdown mode, foldback current limit and thermal shutdown protection.
The SGM2019 is available in Green SOT-23-5 and SC70-5 packages. It operates over an ambient temperature range of -40℃ to +85℃.
GENERAL DESCRIPTION
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回复于 2017-10-25
17#
5） BQ24133 - TI - 具有集成式 MOSFET 和电源路径选择器的 2.5A 同步开关模式锂离子/锂聚合物独立电池充电器。
bq24133 是高度集成的独立锂离子和锂聚合物开关模式电池充电控制器，具有两个集成式 N 通道功率 MOSFET 和功率路径选择器闸极驱动器。它可以为恒频同步 PWM 控制器提供高准确度输入电流、充电电流和电压调节。它还提供电池检测、预处理、充电终止和充电状态监控。
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