The PW4055 is a complete constant-current /constant-voltage linear charger for single cell lithiumion batteries.Its ThinSOT package and low external component count make the PW4055 ideallysuited for portable applications.Furthermore, the PW4055 is specifically designed to work within USBpower specifications.The PW4055 No external sense resistor is needed, and no blocking diode is required due to theinternal MOSFET architecture.Thermal feedback regulates the charge current to limit the dietemperature during high power operation or high ambient temperature. The charge voltage is fixedat 4.2V, and the charge current can be programmed externally with a single resistor. The PW4055automatically terminates the charge cycle when the charge current drops to 1/10th the programmedvalue after the final float voltage is reached. When the input supply (wall adapter or USB supply) isremoved, the PW4055 automatically enters a low current state, dropping the battery drain currentto less than 2μA. The PW4055 can be put into shutdown mode, reducing the supply current to 25μA.The BAT pin has a 7KV ESD(HBM) capability. Other features include charge current monitor, undervoltage lockout, automatic recharge and a status pin to indicate charge termination and the presenceof an input voltage
標(biāo)簽： pw4055
上傳時(shí)間： 2022-02-11
上傳用戶(hù)：jason_vip1
PW4054 是一款性能優(yōu)異的單節(jié)鋰離子電池恒流/恒壓線性充電器。PW4054 適合給 USB 電源以及適配器電源供電。基于特殊的內(nèi)部 MOSFET 架構(gòu)以及防倒充電路， PW4054 不需要外接檢測(cè)電阻和隔離二極管。當(dāng)外部環(huán)境溫度過(guò)高或者在大功率應(yīng)用時(shí)，熱反饋可以調(diào)節(jié)充電電流以降低芯片溫度。充電電壓固定在 4.2V，而充電電流則可以通過(guò)一個(gè)電阻器進(jìn)行外部設(shè)置。當(dāng)充電電流在達(dá)到最終浮充電壓之后降至設(shè)定值的 1/10，芯片將終止充電循環(huán)。當(dāng)輸入電壓斷開(kāi)時(shí)， PW4054 進(jìn)入睡眠狀態(tài)，電池漏電流將降到 1uA 以下。 PW4054 還可以被設(shè)置于停機(jī)模式，此時(shí)芯片靜態(tài)電流降至 25uA。PW4054 還包括其他特性：欠壓鎖定，自動(dòng)再充電和充電狀態(tài)標(biāo)志。PW4054 采用 SOT23-5L 封裝配合較少的外圍原件使其非常適用于便攜式產(chǎn)品
標(biāo)簽： pw4054
上傳時(shí)間： 2022-02-11
上傳用戶(hù)：jason_vip1
PW4053 是一款 5V 輸入，最大 1.2A 充電電流，支持三節(jié)鋰離子電池的升壓充電管理 IC。PW4053 集成功率 MOS，采用異步開(kāi)關(guān)架構(gòu)，使其在應(yīng)用時(shí)僅需極少的外圍器件，可有效減少整體方案尺寸，降低 BOM 成本。 PW4053 的升壓開(kāi)關(guān)充電轉(zhuǎn)換器的工作頻率為 500KHz，轉(zhuǎn)換效率為90%。PW4053 輸入電壓為 5V，內(nèi)置自適應(yīng)環(huán)路，可智能調(diào)節(jié)充電電流大小，防止拉垮適配器輸出，可匹配所有適配器。PW4053 提供 SOP8-EP 封裝形式， 工作溫度額定范圍為-40℃至 85℃
標(biāo)簽： pw4053
上傳時(shí)間： 2022-02-11
上傳用戶(hù)：1208020161
The PW3467 uses advanced trench technology to provide excellent RDS(ON), low gate charge andoperation with gate voltages as low as 4.5V. This device is suitable for use as a Battery protection orin other Switching application
標(biāo)簽： pw3467
上傳時(shí)間： 2022-02-11
上傳用戶(hù)：qingfengchizhu
The PW3428 uses advanced trench technology to provide excellent RDS(ON), low gate charge andoperation with gate voltages as low as 4.5V. This device is suitable for use as a Battery protection orin other Switching application
標(biāo)簽： pw3428
上傳時(shí)間： 2022-02-11
上傳用戶(hù)：zhaiyawei
The PW3407 uses advanced trench technology to provide excellent RDS(ON), low gate charge andoperation with gate voltages as low as 4.5V. This device is suitable for use as a Battery protection orin other Switching application
標(biāo)簽： pw3407
上傳時(shí)間： 2022-02-11
上傳用戶(hù)：
The PW3400A uses advanced trench technology to provide excellent RDS(ON), low gate charge andoperation with gate voltages as low as 2.5V. This device is suitable for use as a Battery protection orin other Switching application
標(biāo)簽： pw3400a
上傳時(shí)間： 2022-02-11
上傳用戶(hù)：
The PW3130 series product is a high integration solution for lithium-lion/polymer batteryprotection.PW3130 contains advanced power MOSFET, high-accuracy voltage detection circuits anddelay circuits. PW3130 is put into an ultra-small SOT23-5 package and only one external componentmakes it an ideal solution in limited space of battery pack. PW3130 has all the protection functionsrequired in the battery application including overcharging, overdischarging, overcurrent and loadshort circuiting protection etc. The accurate overcharging detection voltage ensures safe and fullutilization charging.The low standby current drains little current from the cell while in storage. Thedevice is not only targeted for digital cellular phones, but also for any other Li-Ion and Li-Polybattery-powered information appliances requiring long-term battery life
標(biāo)簽： pw3130
上傳時(shí)間： 2022-02-11
上傳用戶(hù)：fliang
PW2906 是一款高效 、 高壓降壓型 DC-DC 轉(zhuǎn)換器，固定 150KHz 開(kāi)關(guān)頻率，可提供最高 0.6A輸出電流能力，低紋波，出色的線性調(diào)整率與負(fù)載調(diào)整率。PW2906 內(nèi)置固定頻率振蕩器與頻率補(bǔ)償電路，簡(jiǎn)化了電路設(shè)計(jì)。 PWM 控制環(huán)路可以調(diào)節(jié)占空比從 0~100%之間線性變化。PW2906 輸出 5V 時(shí)最大 0.6A 輸出電流， 輸出 15V 時(shí)最大 0.3A 輸出電流
標(biāo)簽： pw2906
上傳時(shí)間： 2022-02-11
上傳用戶(hù)：
PW2902 是一款支持寬電壓輸入的開(kāi)關(guān)降壓型 DC-DC，芯片內(nèi)置 100V/5A 功率 MOS，最高輸入電壓 90V。 PW2902 具有低待機(jī)功耗、高效率、低紋波、優(yōu)異的母線電壓調(diào)整率和負(fù)載調(diào)整率等特性。支持大電流輸出，輸出電流可達(dá) 2A 以上。 PW2902 同時(shí)支持輸出恒壓和輸出恒流功能。PW2902 采用固定頻率的 PWM 控制方式，典型開(kāi)關(guān)頻率為 140KHz。輕載時(shí)會(huì)自動(dòng)降低開(kāi)關(guān)頻率以獲得高轉(zhuǎn)換效率。 PW2902 內(nèi)部集成軟啟動(dòng)以及過(guò)溫保護(hù)電路，輸出短路保護(hù)，限流保護(hù)等功能，提高系統(tǒng)可靠性。PW2902 支持輸出電壓 5V 和 12V 時(shí)， 輸出電流 2 安培
標(biāo)簽： pw2902
上傳時(shí)間： 2022-02-11
上傳用戶(hù)：
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