FAN2001 ,High-efficiency step-down DC/DC converterApplicationSWVVOUTIN161.2V (1A)FB EN3.3µH1C 6INPGND10KΩ P1C R22 5NC 5KΩR1 OUT PGND V P1(AGN ..
FAN2011MPX ,High-efficiency step-down DC/DC converterfeatures include input under-voltage lockout, short■ Point of Load Powercircuit protection and ther ..
FAN2012MPX ,High-efficiency step-down DC/DC converterfeatures include input under-voltage lockout, short■ Point of Load Powercircuit protection and ther ..
FAN21SV04 ,TinyBuck?- 4A, 24V Single-Input Integrated Synchronous Buck RegulatorFeatures Description Single-Supply Operation with 4 A Output Current The FAN21SV04 TinyBuck™ is a ..
FAN2500S25X ,Low-dropout Voltage Regulator FAN2500, FAN2501100 mA CMOS LDO Regulatorswide variety of external capacitors, and ..
FAN2500S25X ,Low-dropout Voltage RegulatorFunctional DescriptionDesigned utilizing CMOS process technology, the Protection circuitry is provi ..
FHP3131IS6X , 0.4mA, 2.5V to 12V, 70MHz Rail-to-Rail Amplifier
FHP3230IMU8X , Single, Dual, and Quad, High Speed, 2.7V to 12V, Rail-to-Rail Amplifiers
FHP3230IMU8X , Single, Dual, and Quad, High Speed, 2.7V to 12V, Rail-to-Rail Amplifiers
FHP3430IMTC14X , Single, Dual, and Quad, High Speed, 2.7V to 12V, Rail-to-Rail Amplifiers
FHP3430IMTC14X , Single, Dual, and Quad, High Speed, 2.7V to 12V, Rail-to-Rail Amplifiers
FHP3450IM14X , Triple and Quad Voltage Feedback Amplifiers
FAN2001
High-efficiency step-down DC/DC converter
FAN2001/FAN2002 1A High-Efficiency Step-Down DC-DC Converter April 2005 FAN2001/FAN2002 1A High-Efficiency Step-Down DC-DC Converter Features Description ■ 96% Efficiency, Synchronous Operation Designed for use in battery-powered applications, the FAN2001/ FAN2002 is a high-efficiency, low-noise synchronous PWM cur- ■ Adjustable Output Voltage Options from 0.8V to V IN rent mode and Pulse Skip (Power Save) mode DC-DC con- ■ 2.5V to 5.5V Input Voltage Range verter. It can provide up to 1A of output current over a wide input ■ Up to 1A Output Current range from 2.5V to 5.5V. The output voltage can be externally ■ Fixed Frequency 1.3MHz PWM Operation adjusted over a wide range of 0.8V to 5.5V by means of an ■ High Efficiency Power Save Mode external voltage divider. ■ 100% Duty Cycle Low Dropout Operation At moderate and light loads, pulse skipping modulation is used. ■ Soft Start Dynamic voltage positioning is applied, and the output voltage is shifted 0.8% above nominal value for increased headroom dur- ■ Output Over-Voltage Protection ing load transients. At higher loads the system automatically ■ Dynamic Output Voltage Positioning switches over to current mode PWM control, operating at 1.3 ■ 25µA Quiescent Current MHz. A current mode control loop with fast transient response ■ Thermal Shutdown and Short Circuit Protection ensures excellent line and load regulation. To achieve high effi- ■ Pb-Free 3x3mm 6-Lead MLP Package ciency and ensure long battery life, the quiescent current is reduced to 25µA in Power Save mode, and the supply current drops below 1µA in shut-down mode. The FAN2001/FAN2002 is Applications available in a 3x3mm 6-lead MLP package. ■ Pocket PCs, PDAs ■ Cell Phones ■ Battery-Powered Portable Devices ■ Digital Cameras ■ Hard Disk Drives ■ Set-Top-Boxes ■ Point-of-Load Power ■ Notebook Computers ■ Communications Equipment Typical Application SW V V OUT IN 1 6 1.2V (1A) FB EN 3.3µH 1 C 6 IN PGND 10KΩ P1 C R2 2 5 NC 5KΩ R1 OUT PGND V P1 (AGND) IN 10µF R1 5KΩ 2 5 2 x 10µF (AGND) EN FB 3 4 V L1 PV OUT SW IN 3 4 1.2V (1A) 3.3µH 10KΩ R2 10µF 2 x 10µF FAN2001 FAN2002 Figure 1. Typical Application FAN2001/FAN2002 Rev. 1.0.2 1 ©2005
