AAT1189IRN-0.6-T1

DATA SHEET AAT1189 High Voltage Step-Down Regulator General Description Features The AAT1189 is a single output step-down (Buck) DC output regulator with an integrated high side MOSFET. The input range is 6V to 24V making it the ideal power IC solution for consumer communications equipment operating from a low cost AC/DC adapter with 12V output. • • • • • • • • • The step-down regulator provides up to 2.5A output current in a small package. 490kHz fixed switching frequency allows small L/C filtering components. Voltage mode control allows for optimum performance across the entire output voltage and load range. • • • • The controller includes programmable over-current, integrated soft-start and over-temperature protection. The AAT1189 is available in the Pb-free, low profile 16-pin TDFN34 package. The rated operating temperature range is -40C to 85C. VIN = 6.0 to 24.0V VOUT Adjustable from 1.5V to 5.5V IOUT up to 2.5A Small Solution Size Low-Cost Non-Synchronous Solution Shutdown Current ILIMIT 10mΩ DCR R7 = VOUT · R1 5V · 6.34kΩ = 634kΩ = 0.1V - 5A · 10mΩ VOCP - ILIMIT · DCR R6 = R1 · R 7 6.34kΩ · 634kΩ = = 6.40kΩ 634kΩ - 6.34kΩ R7 - R 1 AAT1189 Losses All values assume an 85°C ambient temperature and thermal resistance of 50°C/W in the TDFN34-16 package. PTOTAL = IOUT2 · RDS(ON)H · D + (tSW · FS · IOUT + IQ) · VIN 2 PTOTAL = 2.5A · 70mΩ · 5V + (5ns · 490kHz · 2.5A + 70µA) · 12V 12V PTOTAL = 257mW TJ(MAX) = TAMB + ΘJA · PLOSS = 85°C + (50°C/W) · 257mW = 98°C Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202002A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 31, 2012 17 DATA SHEET AAT1189 High Voltage Step-Down Regulator Ordering Information Package Voltage Marking1 Part Number (Tape and Reel)2 TDFN34-16 0.6 3RXYY AAT1189IRN-0.6-T1 Skyworks Green™ products are compliant with all applicable legislation and are halogen-free. For additional information, refer to Skyworks Definition of Green™, document number SQ04-0074. Package Information TDFN34-163 3.000 ± 0.050 1.600 ± 0.050 Detail "A" 3.300 ± 0.050 4.000 ± 0.050 Index Area 0.350 ± 0.100 Top View 0.230 ± 0.050 Bottom View C0.3 (4x) 0.050 ± 0.050 0.450 ± 0.050 0.850 MAX Pin 1 Indicator (optional) 0.229 ± 0.051 Side View Detail "A" All dimensions in millimeters. 1. XYY = assembly and date code. 2. Sample stock is generally held on part numbers listed in BOLD. 3. The leadless package family, which includes QFN, TQFN, DFN, TDFN and STDFN, has exposed copper (unplated) at the end of the lead terminals due to the manufacturing process. A solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder connection. 18 Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202002A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 31, 2012 DATA SHEET AAT1189 High Voltage Step-Down Regulator Copyright © 2012 Skyworks Solutions, Inc. All Rights Reserved. Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the information contained herein. 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Skyworks assumes no liability for applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters. Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com, are incorporated by reference. Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com 202002A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 31, 2012 19