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XC9510 データシート(PDF) 1 Page - Torex Semiconductor |
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XC9510 データシート(HTML) 1 Page - Torex Semiconductor |
1 / 36 page 1/36 XC9510 Series Synchronous Step-Down DC/DC Converter with Built-In LDO Regulator In Series Plus Voltage Detector ■ GENERAL 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 stepped-down 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 800mA at efficiencies over 90%. The XC9510 is designed for use with small ceramic capacitors. A choice of three switching frequencies are available, 300 kHz, 600 kHz, and 1.2 MHz. Output voltage settings for the DC/DC is set-up internally in 100mV steps within the range of 1.6V to 4.0V(±2.0%) and for the VR are set-up internally 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 built-in U.V.L.O. (Under Voltage Lock Out) function, the internal P-channel driver transistor is forced OFF when input voltage becomes 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. ■ APPLICATIONS ● CD-R / RW, DVD ● HDD ● PDAs, portable communication modem ● Cellular phones ● Palmtop computers ● Cameras, video recorders ■ TYPICAL APPLICATION CIRCUIT ■ FEATURES DC/DC Converter with Built-in LDO and VD Function Input Voltage Range : 2.4V ~ 6.0V Low ESR Capacitor : Ceramic capacitor compatible VD Function : Three Sensing Options for Either VDD, DCOUT or VROUT N-ch open drain output Package : SOP-8 <DC/DC Converter Block> Output Voltage Range : 1.6V ~ 4.0V (Accuracy ±2%) Output Current : 800mA, Controls : PWM or PWM/PFM Selectable Oscillation Frequency : 300kHz, 600kHz, 1.2MHz <Regulator Block> Regulator Input : Serial Input from DC/DC output Output Voltage Range : 0.9V ~ 4.0V (Accuracy±2%) Current Limit : 600mA Dropout Voltage : 160mV @ IOUT=200mA (VOUT=2.8V) High Ripple Rejection : 60dB @1kHz (VOUT=2.8V) ■ TYPICAL PERFORMANCE CHARACTERISTICS ETR1007_001 |
同様の部品番号 - XC9510_2 |
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同様の説明 - XC9510_2 |
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