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XC6377A333 Datasheet(PDF) 1 Page - Torex Semiconductor |
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XC6377A333 Datasheet(HTML) 1 Page - Torex Semiconductor |
1 / 17 page PWM Controlled,PWM/PFM Switchable Step‐down DC/DC Converters Series 577 5 ■General Description ■Features ■Applications ■Typical Application Circuit ■Typical Performance Characteristic The XC6376/77 series are step-down DC/DC converters with built-in P- channel power MOSFETs. A highly efficient DC/DC converter with output currents of 500mA can be realised using only four peripherals - a coil, a diode and 2 capacitors. Output voltage can be internally set-up in 0.1V increments (±2.5%) between 1.5V and 6.0V (VOUT type). Alternatively, output voltage can be set-up at will using a 1.0V internal reference voltage source and peripherals (FB type). It is possible to reduce the size of the peripherals used since the switching frequency is 300kHz. The PWM//PFM switchable XC6377 operates in PFM mode during light loads and is highly efficient from light loads to large output currents. Required values for soft start time can be regulated via the external capacitor and the stand-by function reduces supply current to less than 2.5 µA. U.V.L.O and protection are built-in. Input voltage range : 1.8V~10V Output voltage range : 1.5V~6.0V programmable in 0.1V steps (±2.5%) Oscillator frequency : 300kHz (±1.5%) : Custom products for 180, 500kHz Max. output current : 500mA (min.)VIN=3.6V, VOUT=3.0V High Efficiency : 95% (typ.) Stand-by capability : ISTB=2.5 µA (max.) Soft-start time set-up externally type U.V.L.O, Pch boost, VOUT reset functions available Internally set-up output voltage type (VOUT) Externally set-up output voltage type (FB) Pchannel Power MOSFET built-in Package : SOP-8 GElectronic Information Organizers GPalmtops GCellular and portable phones GPortable Audio Systems GVarious Multi-function Power Supplies NP-Channel Power MOSFET Built-in NMaximum Output Current : 500mA NOutput Voltage Range : 1.5~6.0V NOscillator Frequency : 300kHz NMaximum Duty Ratio : 100% NHigh Efficiency : 95% NSOP-8 Package 0 40 20 60 80 100 0.1 1 10 100 1000 Output Current:IOUT(mA) XC6377A333 5.0V VIN=3.96V L=22μH(CR54) 8.0V CL (Tantalum) CIN (Tantalum) 1 2 3 4 8 7 6 5 L VIN CE/ VOUT SD1 Css 05S_3XC6376/77 02.09.12 15:20 ページ 577 |
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