The MST9229 is a high efficiency synchronous boost converter with fully integrated a 13m? high-sideMOSFET and an 11m? low-side MOS FET,supporting 2.7V to 14V input voltage range and up to12-A switch current.
(MST9229高效同步轉(zhuǎn)換器集成一個13 m? 高電平MOS場效應(yīng)管和11 m? 低電平MOS場效應(yīng)管,支持2.7 v至14 v輸入電壓范圍和12A開關(guān)電流)
The switch current limit can beadjustable with an external resistor.(開關(guān)電流限制可以通過外部電阻調(diào)節(jié))
The MST9229 adapts constant off-time peak currentcontrol to provide fast transient. (MST9229采用恒關(guān)斷時間峰值電流控制,提供快速瞬態(tài))
An external compensation network allows flexibility setting loop dynamics to achieve optimal transient performance at different load conditions.
(外部補(bǔ)償網(wǎng)絡(luò)允許靈活地設(shè)置環(huán)路動態(tài),以實現(xiàn)在不同負(fù)載條件下的最佳暫態(tài)性能。)
Using MODE pin selects either Pulse Frequency Modulation (PFM) operation or forced Pulse Width Modulation (PWM) operation.
(使用MODE引腳可以選擇脈沖調(diào)頻(PFM)操作或強(qiáng)迫脈沖寬度調(diào)制(PWM)操作)
The switching frequency in PWM mode is adjustable from 200KHz to 2.2MHz by an external resistor.
(PWM模式下的開關(guān)頻率可以通過外部電阻從200KHz調(diào)節(jié)到2.2MHz。)
The device also features programmable soft-start time with an external capacitor.
(該芯片還具有可編程軟啟動時間與外部電容器。)
The MST9229 monitors both output voltage andfeedback voltage to protect overvoltage condition.
(該MST9229監(jiān)控輸出電壓和反饋電壓,以保護(hù)過電壓條件)
Itfeatures cycle-by-cycle peak current limit and thermalshutdown protection when the device over loads.
(它具有逐周期的峰值電流限制和設(shè)備過載時的熱關(guān)機(jī)保護(hù)功能)
The device is available in a low-profile package DFN-20L 3.5mmx4.5mmx0.75mm with enhanced thermal power pad.
特點:
? Wide Input Voltage Range: 2.7V-14.0V(輸入電壓范圍寬:2.7V-14.0V)
? Wide Output Voltage Range: 4.5V-14.6V(輸出電壓范圍寬:4.5V-14.6V)
? Fully Integrated High-side/Low-side Power MOS FET:13m?/11m?(完全集成的半導(dǎo)體場效應(yīng)晶體管:13 m?/ 11 m?)
? Up to 12A Switch Current and ProgrammablePeak Current Limit(高達(dá)12A開關(guān)電流和可編程的峰值電流限制)
? Typical Shut-down Current: 1uA(典型關(guān)斷電流:1uA)
? Programmable Switching Frequency:200kHz-2.2MHz(可編程開關(guān)頻率:200 khz - 2.2 mhz)
? Output Overvoltage Protection at 15.4V(15.4V輸出過電壓保護(hù))
? Feedback Overvoltage Protection at 110% ofReference Voltage(反饋過電壓保護(hù)在110%的參考電壓)
? Selectable PFM or Forced PWM Mode(可選擇PFM或強(qiáng)制PWM模式)
? Programmable Soft Start(可編程軟啟動)
? Thermal Shutdown Protection: 150°C(熱關(guān)閉保護(hù):150°C)
? Available in DFN-20 3.5mmx4.5mm Package
應(yīng)用:
? Bluetooth Audio(藍(lán)牙音頻)
? Power Banks(移動電源)
? POS System
? E-Cigarette(電子煙)
? USB Power Delivery
具體信息請查看以下文檔:/upload/community/2019/07/04/1562230748-80716.pdf