XC9510 Datasheet | Torex Semiconductor

DESCRIPTION The XC9510 series consists of a step-down DC/DC converter and a high-speed LDO regulator connected in series with the DC/DC converter's output. A voltage detector is also built-in. A highly efficient, low noise output is possible since the regulator is steppeddown further from the DC/DC output. The DC/DC converter block incorporates a P-Channel driver transistor and a synchronous N-Channel switching transistor. With an external coil, diode and two capacitors, the XC9510 can deliver output currents up to 800m A at efficiencies over 90%. The XC9510 is designed for use with small ceramic capacitors. A choice of three switching frequencies are available, 300 k Hz, 600 k Hz, and 1.2 MHz. Output voltage settings for the DC/DC and VR are set-up internally in 0.1V steps within the range of 0.9V to 4.0V ( ± 2.0%). For the VD, the range is of 0.9V to 5.0V (± 2.0%). The soft start time of the series is internally set to 5ms. With the builtin U.V.L.O. (Under Voltage Lock Out) function, the internal P-channel driver transistor is forced OFF when input voltage bees 1.4 V or lower. The operational states of the DC/DC and the regulator blocks can be changed by inputting three kinds of voltage level via the CE/MODE pin. The functions of the MODE pin can be selected via the external control pin to switch the DC/DC control mode and the disable pin to shut down the regulator block. ! FEATURES Input Voltage Range : Load Capacitors : 2.4V ~ 6.0V Ceramic Capacitors patible (Low ESR Capacitors) VD Function : Detects output voltage from the VDOUT pin while sensing either VDD, DCOUT, or VROUT internally. Nch Open Drain Output <DC/DC Converter> Output Voltage Range : 0.9 ~ 4.0V (Accuracy ±2%) Output Current : Controls : 800m A PWM Control PWM, PWM / PFM Automatic Switching External Oscillation Frequency : 300k Hz, 600k Hz, 1.2MHz <Regulator> Output Voltage Range : 0.9 ~ 4.0V (Accuracy ±2%) Current Limit Dropout Voltage : High Ripple Rejection 600m A 240m V @ IOUT=300m A (VOUT=2.8V)...