[原创] Linear LT8607 42V 750mA同步降压稳压器解决方案

Linear公司的LT8607是紧凑高效率和高速的同步开关降压稳压器,非开关静态电流仅为1.7μA,可连续提供750mA电流,输入电压从3V到42V,输出波纹小于10mVP-P,效率大于93%,可调和可同步频率200kHz到2.2MHz,主要用在通用降压转换器和低EMI降压转换器.本文介绍了LT8607主要特性,功能框图,多种应用电路,以及演示板DC2565A主要特性,测量建立图,电路图,材料清单和PCB设计图.

The LT®8607 is a compact, high efficiency, high speedsynchronous monolithic step-down switching regulatorthat consumes only 1.7μA of non-switching quiescentcurrent. The LT8607 can deliver 750mA of continuouscurrent. Top and bottom power switches are included withall necessary circuitry to minimize the need for externalcomponents. Low ripple Burst Mode operation enables highefficiency down to very low output currents while keepingthe output ripple below 10mVP-P. Internal compensation with peak current mode topology allows the use of smallinductors and results in fast transient response and goodloop stability. The EN/UV pin has an accurate 1V threshold and can be used to program VIN undervoltage lockout or toshut down the LT8607 reducing the input supply currentto 1μA. The PG pin signals when VOUT is within ±8.5% ofthe programmed output voltage as well as fault conditions.
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