400mA同步整流DC/DC轉換器

XC9245系列產品是能使用陶瓷電容,內置0.65ΩP溝道驅動晶體管及0.45ΩN溝道開關晶體管的降壓同步整流DC/DC轉換器。只使用線圈和電容作為外置零部件，能穩定地提供最大400mA的電流。

XC9245系列產品內部設定了輸出電壓，能在0.8V～4.0V的範圍內(±2.0%)以0.05V的間隔選擇輸出電壓。開關頻率高達1.2MHz，能減小外置零部件的尺寸。採用USPN-6封裝。 USPN-6封裝最適用於對高度及空間有限制的應用。

由於在待機時整個電路停止工作，能把消耗電流抑制在1.0μA以下。在待機時，由CL高速放電功能使VOUT-VSS之間的內部開關導通，通過內部電阻使CL的電荷放電。這個功能可以在待機時防止VOUT後續電路的錯誤動作。

由內部把軟啟動時間設定為0.25ms（TYP.），能使輸出電壓高速地上升。

為了保護IC不受熱損壞，XC9245系列產品備有積分鎖定方式的限定電流功能。內置了UVLO (輸入欠壓鎖閉Under Voltage Lock Out) 功能，在輸入電壓低於2.25V(最大)時，強制停止內部驅動晶體管工作。

特點

內置驅動器 0.65ΩP-ch驅動晶體管.,0.45ΩN-ch同步整流開關晶體管.
輸入電壓範圍 2.3V～6.0V
輸出電壓範圍 0.8V～4.0V(0.05V間隔)
高轉換效率 90%(TYP.)
輸出電流 400mA
工作頻率 1.2MHz(±15%)
最大佔空比 100%
功能 限定電流(定電流+積分閂鎖方式),CL高速自動放電,帶軟啟動
輸出電容 陶瓷電容
控制方式 PWM/PFM自動切換控制
工作溫度範圍 -40℃～+85℃
適應環保要求 與EU RoHS規格對應、無鉛

典型應用電路

技術文件

封裝

封裝名稱 引腳數 個/Reel 外形尺寸（mm）
USPN-6 6 5,000 1.3 x 1.3 x 0.4

XC9245系列型號

型號 樣品 Type Output Voltage Oscillation Frequency Packages EDA 在線商店

XC9245A08C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 0.8V 1.2MHz USPN-6

XC9245A09C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 0.9V 1.2MHz USPN-6

XC9245A0LC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 0.85V 1.2MHz USPN-6

XC9245A0MC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 0.95V 1.2MHz USPN-6

XC9245A10C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.0V 1.2MHz USPN-6

XC9245A11C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.1V 1.2MHz USPN-6

XC9245A12C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.2V 1.2MHz USPN-6

XC9245A13C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.3V 1.2MHz USPN-6

XC9245A14C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.4V 1.2MHz USPN-6

XC9245A15C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.5V 1.2MHz USPN-6

XC9245A16C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.6V 1.2MHz USPN-6

XC9245A17C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.7V 1.2MHz USPN-6

XC9245A18C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.8V 1.2MHz USPN-6

XC9245A19C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.9V 1.2MHz USPN-6

XC9245A1AC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.05V 1.2MHz USPN-6

XC9245A1BC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.15V 1.2MHz USPN-6

XC9245A1CC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.25V 1.2MHz USPN-6

XC9245A1DC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.35V 1.2MHz USPN-6

XC9245A1EC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.45V 1.2MHz USPN-6

XC9245A1FC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.55V 1.2MHz USPN-6

XC9245A1HC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.65V 1.2MHz USPN-6

XC9245A1KC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.75V 1.2MHz USPN-6

XC9245A1LC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.85V 1.2MHz USPN-6

XC9245A1MC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 1.95V 1.2MHz USPN-6

XC9245A20C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.0V 1.2MHz USPN-6

XC9245A21C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.1V 1.2MHz USPN-6

XC9245A22C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.2V 1.2MHz USPN-6

XC9245A23C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.3V 1.2MHz USPN-6

XC9245A24C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.4V 1.2MHz USPN-6

XC9245A25C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.5V 1.2MHz USPN-6

XC9245A26C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.6V 1.2MHz USPN-6

XC9245A27C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.7V 1.2MHz USPN-6

XC9245A28C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.8V 1.2MHz USPN-6

XC9245A29C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.9V 1.2MHz USPN-6

XC9245A2AC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.05V 1.2MHz USPN-6

XC9245A2BC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.15V 1.2MHz USPN-6

XC9245A2CC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.25V 1.2MHz USPN-6

XC9245A2DC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.35V 1.2MHz USPN-6

XC9245A2EC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.45V 1.2MHz USPN-6

XC9245A2FC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.55V 1.2MHz USPN-6

XC9245A2HC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.65V 1.2MHz USPN-6

XC9245A2KC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.75V 1.2MHz USPN-6

XC9245A2LC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.85V 1.2MHz USPN-6

XC9245A2MC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 2.95V 1.2MHz USPN-6

XC9245A30C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.0V 1.2MHz USPN-6

XC9245A31C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.1V 1.2MHz USPN-6

XC9245A32C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.2V 1.2MHz USPN-6

XC9245A33C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.3V 1.2MHz USPN-6

XC9245A34C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.4V 1.2MHz USPN-6

XC9245A35C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.5V 1.2MHz USPN-6

XC9245A36C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.6V 1.2MHz USPN-6

XC9245A37C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.7V 1.2MHz USPN-6

XC9245A38C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.8V 1.2MHz USPN-6

XC9245A39C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.9V 1.2MHz USPN-6

XC9245A3AC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.05V 1.2MHz USPN-6

XC9245A3BC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.15V 1.2MHz USPN-6

XC9245A3CC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.25V 1.2MHz USPN-6

XC9245A3DC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.35V 1.2MHz USPN-6

XC9245A3EC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.45V 1.2MHz USPN-6

XC9245A3FC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.55V 1.2MHz USPN-6

XC9245A3HC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.65V 1.2MHz USPN-6

XC9245A3KC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.75V 1.2MHz USPN-6

XC9245A3LC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.85V 1.2MHz USPN-6

XC9245A3MC7R-G

 With CL Discharge, UVLO, Thermal Shutdown 3.95V 1.2MHz USPN-6

XC9245A40C7R-G

 With CL Discharge, UVLO, Thermal Shutdown 4.0V 1.2MHz USPN-6

XC9245 系列相關諮詢

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