0.5V低输入电压 1A 高速电压稳压器（附带外部调整软启动时间的功能）

XC6603系列产品能从0.5V的输入电压开始工作。此外，因为是超低导通电阻，最适用于需要在低电压同时高效率地输出大电流的应用。输出电压为±15mV/±20mV且精度高，内部由N沟道驱动晶体管,基准电压源,误差放大器,过电流保护电路（反馈）,过热保护电路(TSD),欠压锁闭电路(输入欠压锁闭),软启动电路,相位补偿电路等构成。

输出电压由内部激光微调固定，能在0.5V～1.8V的范围内以0.1V的间隔选择产品。输出滤波电容(CL)还能对应陶瓷等低ESR电容。

在IC启动时，软启动电路给CL充电，能抑制从VIN急剧地流向VOUT的冲击电流，能抑制从VIN急剧地流向VOUT的冲击电流。通过调节SS引脚连接的电容能任意地设定软启动时间。因为冲击电流与软启动时间成相反的关系，设定延长软启动时间能抑制冲击电流。

通过CE引脚使IC成待机状态能大幅度降低消耗电流。此外，由内部开关能使CL中的充电电荷高速放电，迅速地返回VSS电平。并且，在IC内部CE引脚内置下拉电阻，在CE未连接电平时，使IC成待机状态。

特点

最大输出电流1A(1.3ALimit)
导通阻抗0.15Ω@VBIAS=3.6V,VOUT=1.2V
BIAS电压范围2.5V～6.0V
输入电压范围0.5V～3.0V
输出电压范围0.5V～1.8V(0.1V间隔)
输出电压精度±0.015V@VOUT<1.2V
±0.020V@VOUT≧1.2V
纹波抑制率60dB@f=1kHz(VBIAS_PSRR)
75dB@f=1kHz(VIN_PSRR)
消耗电流100μA(VBIAS),6.5μA(VIN)@VOUT=1.2V
待机电流0.01μA(VBIAS),0.01μA(VIN)
UVLO1.8V(VBIAS),0.4V(VIN)
TSD150℃@检测,125℃@解除
保护电路反馈,TSD,UVLO
功能外部调整软启动时间的功能
CE下拉电阻（高电平有效）(高电平有效)
CL高速自动放电
工作温度范围-40℃～+85℃
输出电容陶瓷电容(2.2μF)
适应环保要求与EU RoHS规格对应、无铅

典型电路框图

质量保证文件

技术文件

封装

封装名称 引脚数 个/Reel 外形尺寸（mm）
SOT-26W 6 3,000 2.8 x 2.9 x 1.3
USP-6C 6 3,000 1.8 x 2.0 x 0.6

XC6603 系列型号列表

型号 样品 Type Output Voltage Output Voltage Accuracy Packages EDA 在线商店

XC6603A051ER-G

Adjustable Soft-start time with an external capacitor 0.5V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A051MR-G

Adjustable Soft-start time with an external capacitor 0.5V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

XC6603A061ER-G

Adjustable Soft-start time with an external capacitor 0.6V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A061MR-G

Adjustable Soft-start time with an external capacitor 0.6V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

XC6603A071ER-G

Adjustable Soft-start time with an external capacitor 0.7V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A071MR-G

Adjustable Soft-start time with an external capacitor 0.7V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

XC6603A081ER-G

Adjustable Soft-start time with an external capacitor 0.8V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A081MR-G

Adjustable Soft-start time with an external capacitor 0.8V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

XC6603A091ER-G

Adjustable Soft-start time with an external capacitor 0.9V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A091MR-G

Adjustable Soft-start time with an external capacitor 0.9V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

XC6603A101ER-G

Adjustable Soft-start time with an external capacitor 1.0V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A101MR-G

Adjustable Soft-start time with an external capacitor 1.0V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

XC6603A111ER-G

Adjustable Soft-start time with an external capacitor 1.1V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A111MR-G

Adjustable Soft-start time with an external capacitor 1.1V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

XC6603A121ER-G

Adjustable Soft-start time with an external capacitor 1.2V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A121MR-G

Adjustable Soft-start time with an external capacitor 1.2V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

XC6603A131ER-G

Adjustable Soft-start time with an external capacitor 1.3V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A131MR-G

Adjustable Soft-start time with an external capacitor 1.3V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

XC6603A141ER-G

Adjustable Soft-start time with an external capacitor 1.4V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A141MR-G

Adjustable Soft-start time with an external capacitor 1.4V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

XC6603A151ER-G

Adjustable Soft-start time with an external capacitor 1.5V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A151MR-G

Adjustable Soft-start time with an external capacitor 1.5V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

XC6603A161ER-G

Adjustable Soft-start time with an external capacitor 1.6V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A161MR-G

Adjustable Soft-start time with an external capacitor 1.6V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

XC6603A171ER-G

Adjustable Soft-start time with an external capacitor 1.7V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A171MR-G

Adjustable Soft-start time with an external capacitor 1.7V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

XC6603A181ER-G

Adjustable Soft-start time with an external capacitor 1.8V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) USP-6C

XC6603A181MR-G

Adjustable Soft-start time with an external capacitor 1.8V ±0.015V(VOUT<1.2V),±0.020V(VOUT≧1.2V) SOT-26W

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