XCM524 Series
600mA Synchronous Step-Down DC/DC Converter + 500mA LDO with Delay Function Voltage Detector
ETR2428-003
...
XCM524 Series
600mA Synchronous Step-Down DC/DC Converter + 500mA LDO with Delay Function Voltage Detector
ETR2428-003
˙GENERAL DESCRIPTION
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 0.42ЊP-channel MOS driver
transistor and 0.52ЊN-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 mon...