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电压检测器
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低噪声放大器(LNA)
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  XCM520
 
产品介绍

XCM520
600mA Synchronous Step-Down DC/DC Converter + Dual LDO Regulator

The XCM520 series is a multi chip module which comprises of a 600mA driver transistor built-in synchronous step?down DC/DC converter and a dual CMOS LDO regulator. The device is housed in small USP-12B01 package which is ideally suited for space conscious applications.
The XCM520 can replace this dual DC/DC to eliminate one inductor and reduce output noise.
The DC/DC converter with a built-in 0.42ΩP-channel MOS and a 0.52ΩN-channel MOS provides a high efficiency, stable power supply up to 600mA to using only a coil and two ceramic capacitors connected externally.
The highly accurate, low noise, dual CMOS LDO regulator includes a reference voltage source, error amplifiers, driver transistors, current limiters and phase compensation circuits internally. The series is also fully compatible with low ESR ceramic capacitors.
This high level of output stability is maintained even during frequent load fluctuations, due to the excellent transient response performance and high PSRR achieved across a broad range of frequencies. The EN function allows the output of each regulator to be turned off independently, resulting in greatly reduced power consumption.

DC/DC 转换器
Driver Transistor 0.42Ω P-channel MOS Built-in
Switching Transistor 0.52Ω N-channel MOS Built-in
输入电压范围 2.7V〜6.0V
输出电压 2.3V(VOUT3)
高转换效率 86%(TYP.)
输出电流 600mA
工作频率 3.0MHz (±15%)
软启动 Built-In Soft-Start
保护 内置电流限制功能(最大电流限制, 短路保护)
工作模式 Fixed PWM, PWM/PFM 自动切换
电压调整器
最大输出电流 150mA(Limiter 300mA TYP.)
压差 100mV@100mA
输入电压范围 1.5V~6.0V
输出电压 0.8V(VOUT1),1.2V(VOUT2)
高精度 ±2%(VOUT1),±30mV(VOUT2)
消耗电流 25μA (TYP.)
待机电流 Less than 0.1μA (TYP.)
高电源抑制比 70dB @1kHz
Noise Low Output Noise
工作温度范围 -40℃~+85℃
对应低ESR电容 可使用陶瓷电容
封装 USP-12B01
 

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