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AAT2506IWP-AN-T1 Datasheet(PDF) 1 Page - Advanced Analogic Technologies |
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AAT2506IWP-AN-T1 Datasheet(HTML) 1 Page - Advanced Analogic Technologies |
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1 / 26 page  AAT2506 1MHz Step-Down Converter/LDO Regulator 2506.2006.05.1.3 1 SystemPower™ Typical Application AAT2506 Step-Down Converter Efficiency (VOUT = 2.5V; L = 10 μμH) Output Current (mA) 60 70 80 90 100 0.1 1 10 100 1000 VIN = 3.3V 4.7 μH L1 C1 22 μF 2.2 μF C4 10 μF C3 10nF C5 PGND 1 LX 2 VP 3 VCC 4 ENLDO 9 EN 10 FB 11 SGND 12 VLDO 5 OUT 6 GND 8 BYP 7 AAT2506 U1 L1 Sumida CDRH3D16-4R7 C1 Murata GRM219R61A475KE19 C3 Murata GRM21BR60J106KE19 VIN = 2.7V to 5.5V 3.3V at 300mA General Description The AAT2506 is a member of AnalogicTech's Total Power Management IC™ (TPMIC™) product fam- ily. It is a low dropout (LDO) linear regulator and a step-down converter with an input voltage range of 2.7V to 5.5V, making it ideal for applications with single lithium-ion/polymer batteries. The LDO has an independent input and is capable of delivering up to 300mA. The linear regulator has been designed for high-speed turn-on and turn-off performance, fast transient response, and good power supply rejection ratio (PSRR). Other fea- tures include low quiescent current and a low dropout voltage. The AAT2506 is available in either a fixed version with internal feedback or a programmable version with external feedback resistors. It can deliver 600mA of load current while maintaining a low 25µA no load quiescent current. The 1MHz switch- ing frequency minimizes the size of external com- ponents while keeping switching losses low. The AAT2506 feedback and control delivers excellent load regulation and transient response with a small output inductor and capacitor. The AAT2506 is designed to maintain high efficien- cy throughout the operating range, which is critical for portable applications. The AAT2506 is available in a 12-pin TDFN33 package, and is rated over a temperature range of -40°C to +85°C. Features •VIN Range: 2.7V to 5.5V •VOUT Range: 0.6V to VIN • 300mA LDO Current Output • 400mV LDO Dropout Voltage at 300mA • High Output Accuracy: ±1.5% • Fast LDO Line / Load Transient Response • 600mA, 97% Efficiency Step-Down Converter • Fast Turn-On Time (100µs Typical) • 25µA No Load Quiescent Current for Step- Down Converter • Shutdown Current <1µA • Low RDS(ON) 0.4Ω Integrated Power Switches • 100% Duty Cycle Low Dropout Operation • 1MHz Switching Frequency • 100µs Typical Soft Start • Over-Temperature Protection • Current Limit Protection • Available in TDFN33-12 Package • -40°C to +85°C Temperature Range Applications • Cellular Phones • Digital Cameras • Handheld Instruments • Microprocessor/DSP Core/IO Power • PDAs and Handheld Computers • Portable Media Players |
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