AAT2510 Datasheet | AAT

Description The AAT2510 is a member of Analogic Tech's Total Power Management IC™ (TPMIC™) product family. It is prised of two 1MHz step-down converters designed to minimize external ponent size and cost. The input voltage ranges from 2.7V to 5.5V. The output voltage ranges from 0.6V to the maximum applied input voltage and is either fixed or externally adjustable. Peak current mode control with internal pensation provides a stable converter with low ESR ceramic output capacitors for extremely low output ripple. Each channel has a low 25µA quiescent operating current, which is critical for maintaining high efficiency at light load. For maximum battery life, each converter's highside P-channel MOSFET conducts continuously when the input voltage approaches dropout (100% duty cycle operation). Both regulators have independent input and enable inputs. .. Features - - - - - - - - - - - - - - - - - Sys Pwr™ Up to 96% Efficiency 25µA Quiescent Current Per Channel VIN Range: 2.7V to 5.5V Fixed VOUT Range: 0.6V to VIN Adjustable VOUT Range: 0.6V to 2.5V Output Current: 400m A Low RDS(ON) 0.4Ω Integrated Power Switches Low Drop Out 100% Duty Cycle 1.0MHz Switching Frequency Shutdown Current <1µA Current Mode Operation Internal Reference Soft Start Short-Circuit Protection Over-Temperature Protection 3mm x 3mm, < 1mm high 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 puters Portable Media Players The AAT2510 is available in a thermally-enhanced 12-pin TDFN33 package, and is rated over the -40°C to +85°C temperature range. Typical Application VIN = 2.7 - 5.5V C3 10µF 12 1 AAT2510 Efficiency U1 AAT2510 VIN1 EN1 LX1 FB1 VIN2 EN2 LX2 FB2 9 4 8 5 6 7 C8 0.1µF 100 95 2.5V at 400m A L1 4.7µH 11 2 3 L2 4.7µH 1.8V at 400m A Efficiency (%) 90 85 80 75 70 65 60 0.1 1 VIN = 3.3V with unloaded output disabled 10 100 1000 2.5V 1.8V C1...