AAT1112 Datasheet | Advanced Analog Technology

1.5A, 1.4MHz Step-Down Converter General Description The AAT1112 Switch Reg is a 1.5A step-down converter with an input voltage range of 2.4V to 5.5V and an adjustable output voltage from 0.6V to VIN. The 1.4MHz switching frequency enables the use of small external ponents. The small footprint and high efficiency make the AAT1112 an ideal choice for portable applications. The AAT1112 delivers 1.5A maximum output current while consuming only 42µA of no-load quiescent current. Ultra-low RDS(ON) integrated MOSFETs and 100% duty cycle operation make the AAT1112 an ideal choice for high output voltage, high current applications which require a low dropout threshold. The AAT1112 provides excellent transient response and high output accuracy across the operating range. No external pensation ponents are required. The AAT1112 is designed to maintain high efficiency throughout the load range. Pulling the MODE/ SYNC pin high enables "PWM Only" mode, maintaining constant frequency and low output ripple across the operating range. Alternatively, the converter may be synchronized to an external clock input via the MODE/SYNC pin. Over-temperature and short-circuit protection safeguard the AAT1112 and system ponents from damage. The AAT1112 is available in a Pb-free, space-saving TDFN33-12 or 2.75x3mm TSOPJW-12 package. The product is rated over an operating temperature range of -40°C to +85°C. Features - - - - - - - - - - - - - - - Switch Reg™ 1.5A Maximum Output Current Input Voltage: 2.4V to 5.5V Output Voltage: 0.6V to VIN Up to 95% Efficiency 42µA No Load Quiescent Current No External pensation Required 1.4MHz Switching Frequency Synchronizable to External Clock Optional "PWM Only" Low Noise Mode 100% Duty Cycle Low-Dropout Operation Internal Soft Start Over-Temperature and Current Limit Protection <1µA Shutdown Current TSOPJW-12 or TDFN33-12 Package Temperature Range: -40°C to +85°C Applications - - - - - - - Cellular Phones Digital Cameras Hard...