XCM524
600mA Synchronous Step-Down DC/DC Converter + 500mA LDO
with Delay Function Voltage Detector
The XCM524 series is a multi combination module IC which comprises of a 600mA driver transistor built-in synchronous step?down DC/DC converter and a high speed, high current LDO regulator with voltage detector function. The device is housed in small USP-12B01 package which is ideally suited for space conscious applications. The DC/DC converter and the LDO blocks are isolated in the package so that noise interference from the DC/DC to the LDO regulator is minimal.
The DC/DC converter block with a built-in 0.42ΩP-channel MOS driver transistor and 0.52ΩN-channel MOS switching transistor, designed to allow the use of ceramic capacitors. The DC/DC enables a high efficiency, stable power supply with an output current of 600mA to be configured using only a coil and two capacitors connected externally.
The LDO regulator block is precise, low noise, high ripple rejection, low dropout positive voltage regulators with built-in voltage detector. The LDO is also compatible with low ESR ceramic output capacitors. Good output stability is maintained during load fluctuations due to its excellent transient response. The current limiter's fold back circuit also operates as a short circuit protection for the output current.
The voltage detector block of the contains delay circuit. The delay time can be controlled by an external capacitor.
The detector monitors the input voltage of the voltage regulator.
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输入电压范围
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2.7V 〜 6.0V
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输出电压
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0.8V 〜 4.0V (±2%)
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高精度
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92% (TYP.)
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输出电流
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600mA(MAX)
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工作频率
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1.2MHz,3.0MHz (±15%)
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保护
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Constant Current & Latching
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控制
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PWM, PWM/PFM 自动切换
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<电压调整器>
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最大输出电流
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500mA以上(Limiter 600mA TYP.)(2.5V≦VROUT≦4.9V)
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输入输出电压差
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200mV@IROUT=100mA
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工作电压范围
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2.0V 〜 6.0V
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电压范围
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0.9V 〜5.1V(0.1V间隔)(±2%)
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检测电压范围
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2.0V 〜 5.5V(0.1V间隔)(±2%)
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VR.VD 检测电压温度特性
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±100ppm/℃ (TYP.)
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高电源抑制比
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65dB (10kHz)
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对应低ESR电容
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可使用陶瓷电容
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工作温度范围
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-40℃〜85℃
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封装
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USP-12B01
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Environmentally Friendly
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EU RoHS Compliant, Pb Free
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