AAT2113BIXS-0.6-T1 Skyworks

DATA SHEET AAT2113B 3.3MHz, Fast Transient 1.5A Step-Down Converter in an 2mm x 2mm Package General Description Features 5mm x 5mm Total Solution Size The AAT2113B SwitchReg is a 1.5A step-down con- verter with a typical input voltage of 3.3V and a fixed 1.5A Maximum Output Current output voltage of 1.2V or an adjustable output. The Tiny 0.47H Chip Inductor 3.3MHz switching frequency enables the use of small Excellent Transient Response external components. The ultra-small 2mm x 2mm foot- Input Voltage: 2.7V to 5.5V print and high efficiency make the AAT2113B an ideal Ultra-small, Low Profile 8-pin 2mm x 2mm FTDFN choice for portable applications. Package Fixed or Adjustable Output Voltage Options: The AAT2113B delivers 1.5A maximum output current Fixed Output Voltage: 1.2V while consuming only 55A no-load quiescent current. Adjustable Output Voltage: 1.0V to 2.5V Low R integrated MOSFETs and 100% duty cycle DS(ON) High Efficiency, Low Noise Architecture operation make the AAT2113B the ideal choice for high 3.3MHz Switching Frequency output voltage, high current applications which require a No External Compensation Required low dropout threshold. 55A No Load Quiescent Current The AAT2113B provides excellent transient response and 100% Duty Cycle Low-Dropout Operation output accuracy across the operating range. No external Internal Soft Start compensation is required. Over-Temperature and Current Limit Protection <1A Shutdown Current The AAT2113B maintains high efficiency throughout the -40C to 85C Temperature Range load range. The unique low-noise architecture reduces ripple and spectral noise. The AAT2113B automatically optimizes efficiency during Light Load mode (LL) and Applications maintains constant frequency and low output ripple dur- Cellular Phones ing PWM mode. Digital Cameras Over-temperature and short circuit protection safeguard Hard Disk Drives the AAT2113B and system components from damage. MP3 Players PDAs and Handheld Computers The AAT2113B is available in a Pb-free, ultra-small, low Portable Media Players profile, 8-pin 2mm x 2mm FTDFN package. The product USB Devices is rated over a temperature range of -40C to 85C. Wireless Network Cards Typical Application Load Transient Response (V = 5V V = 1.2V I = 10% to 100% IN OUT OUT VIN VOUT U1 C = 10F, 6.3V, 0603) L1 OUT 1.2V/1.5A 2.7V to 5.5V 1.3V VP LX 0.47H 1.25V 100mV 1.2V EN LX C3 1.15V C1 AAT2113B 10F 4.7F C3 1.1V 1.5A VCC FB 6.3V 6.3V 1.0F 0603 0603 6.3V AGND PGND 0402 150mA FTDFN 22-8 Time (20s/div) Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 202003A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 24, 2012 DATA SHEET AAT2113B 3.3MHz, Fast Transient 1.5A Step-Down Converter in an 2mm x 2mm Package Pin Descriptions Pin Symbol Function 1 PGND Main power ground return pin. Connect to the output and input capacitor return. 2 VP Input power supply tied to the source of the high side P-channel MOSFET. 3 VCC Power supply supplies power for the internal circuitry. Feedback input pin. This pin is connected directly to the converter output for the 1.2V xed output version, 4FB or connected to an external resistor divider for the adjustable output version. 5 AGND Analog ground. This pin is internally connected to the analog ground of the control circuitry. Enable pin. A logic low disables the converter and it consumes less than 1A of current. When connected 6EN high, it resumes normal operation. Switching node. Connect the inductor to this pin. It is internally connected to the drain of both high and 7, 8 LX low side MOSFETs. Pin Configuration FTDFN22-8 (Top View) 1 8 PGND LX 2 7 VP LX 3 6 VCC EN 4 5 FB AGND Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 202003A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. May 24, 2012