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AAT2514 Datasheet(PDF) 1 Page - Skyworks Solutions Inc. |
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AAT2514 Datasheet(HTML) 1 Page - Skyworks Solutions Inc. |
1 / 14 page 1 AAT2514 Dual Channel, 600mA Step-Down Converter DATA SHEET Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202030B • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • March 19, 2013 General Description The AAT2514 SwitchReg™ is a dual channel current mode PWM DC-DC step-down converter operating at 1.5MHz constant frequency. The device is ideal for portable equip- ment requiring two separate power supplies that need high current up to 600mA. The device operates from single-cell Lithium-ion batteries while still achieving over 96% efficiency. The AAT2514 also can run at 100% duty cycle for low dropout operation, extending battery life in portable systems while light load operation provides very low output ripple for noise sensitive applications. The device has a unique adaptive slope compensation scheme that makes it possible to operate with a lower range of inductor values to optimize size and provide efficient operation. The 1.5MHz switching frequency minimizes the size of external components while keeping switching losses low. The AAT2514 can operate from a 2.5V to 5.5V input voltage and can supply up to 600mA output current for each channel. The AAT2514 is available in a Pb-free, 3x3mm 10-lead TDFN package and operates over the -40°C to +85°C temperature range. Features • VIN Range:2.5V to 5.5V • Up to 600mA Output Current • High Efficiency: Up to 96% • 1.5MHz Constant Frequency Operation • 100% Duty Cycle Dropout Operation • Low RDS(ON) Internal Switches: 0.35 • Current Mode Operation for Excellent Line and Load Transient Response • Adaptive Slope Compensation • Soft Start • Short-Circuit and Thermal Fault Protection • <1μA Shutdown Current • Power-On Reset Output • Small, Thermally Enhanced TDFN33-10 Package • -40°C to +85°C Temperature Range Applications • Cellular Telephones • Digital Still Cameras • PDAs • Portable Media Players • Wireless and DSL Modems Typical Application EN1 LX1 GND AAT2514 L1 2.2μH VOUT1 1.8V C3 10μF C2 10μF VIN 2.5V to 5.5V IN EN2 LX 2 FB2 FB1 VOUT2 2.5V R5 100k Ω RESET L2 2.2μH R1 316k Ω R2 634k Ω R3 316k Ω R4 1M Ω C1 10μF POR |
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