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S-8354A40MC DC/DC Step-Up Converter 4V SOT-153/SOT23-5 marking JQZ STEP-UP Switching Regulator

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Product description
控制方式
MODE
PWM/PFM
输入电压VIN
Input Voltage
〈10V
输出电压VOUT
Output Voltage
4V
输出电流IOUT
Output Current
282mA/0.282A
震荡频率FOSC
Oscillation Frequency
250KHz
内置FET
Built-in FET
Description & ApplicationsSTEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR • Low voltage operation: Startup at 0.9 V min. (IOUT = 1 mA) guaranteed • Low current consumption : During operation 18.7 μA (3.3 V, 50 kHz, typ.) During shutdown: 0.5 μA (max.) • Duty ratio : Built-in PWM / PFM switching control circuit (S-8354 Series) 15 % to 83 % (30 kHz and 50 kHz models) 15 % to 78 % (250 kHz models) • External parts : Coil, capacitor, and diode • Output voltage : Selectable in 0.1 V steps between 1.5 V and 6.5 V (for VDD / VOUT separate types) Selectable in 0.1 V steps between 2.0 V and 6.5 V (for other than VDD / VOUT separate types) • Output voltage accuracy : ±2.4% • Oscillation frequency : 30 kHz, 50 kHz, and 250 kHz selectable • Soft start function : 6 ms (50 kHz, typ.) • Lead-free, Sn 100%, halogen-free • Power supplies for portable equipment such as digital cameras, electronic notebooks, and PDAs • Power supplies for audio equipment such as portable CD / MD players • Constant voltage power supplies for cameras, VCRs, and communication devices • Power supplies for micro
描述与应用STEP-UP, PWM CONTROL or PWM / PFM SWITCHABLE BUILT-IN TRANSISTOR SWITCHING REGULATOR •低电压工作:启动以0.9 V。 (IOUT = 1 mA时)保证 •低功耗:工作时18.7μA(3.3 V,50 kHz,典型值) 休眠时:0.5μA(最大值) •占空比:内置PWM/ PFM切换控制电路(S-8354系列) 15%至83%(30千赫和50千赫模型) 15%〜78%(250千赫型号) •外部部件:线圈,电容器和二极管 •输出电压:0.1 V步长之间1.5 V和6.5 V(VDD/ VOUT分离型可选) 可选择在0.1 V步骤之间2.0 V和6.5 V(VDD/ VOUT分离型以外) •输出电压精度:±2.4% •振荡频率:30千赫,50千赫,250千赫可选 •软启动功能:6毫秒(50 kHz,典型值) •无铅,SN100%,无卤素的 •电源的便携式设备,如数码相机,电子记事本,PDA •电源音频设备,如便携式CD/ MD播放器 •恒压电源,摄像机,录像机,通信设备 •微机用电源
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