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AAT1189IRN-0.6-T1 Datasheet(PDF) 1 Page - Advanced Analogic Technologies |
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AAT1189IRN-0.6-T1 Datasheet(HTML) 1 Page - Advanced Analogic Technologies |
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1 / 19 page  AAT1189 High Voltage Step-Down Regulator SwitchRegTM PRODUCT DATASHEET 1189.2008.06.1.0 1 www .analogictech.com General Description 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 oper- ating from a low cost AC/DC adapter with 12V output. The step-down regulator provides up to 2.5A output cur- rent in a small package. 490kHz fixed switching fre- quency 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, inte- grated soft-start and over-temperature protection. The AAT1189 is available in the Pb-free, low profile 16-pin TDFN34 package. The rated operating tempera- ture range is -40°C to 85°C. Features • V IN = 6.0 to 24.0V • V OUT Adjustable from 1.5V to 5.5V • I OUT up to 2.5A • Small Solution Size • Low-Cost Non-Synchronous Solution • Shutdown Current <35μA • High Switching Frequency • Voltage Mode Control • PWM Fixed Frequency for Lowest Noise ▪ Programmable Over-Current Protection • Over-Temperature Protection • Internal Soft Start • Low Profile 3x4mm TDFN-16 Packages • -40°C to 85°C Temperature Range Applications • DSL and Cable Modems • Notebook Computers • Satellite Set Top Box • Wireless LAN Systems Typical Application 5V/2.5A D1 BAS16 4.7µH L1 D2 B340A 6.0V - 24.0V + C1 100µF 25V C3 2.2µF C7 330pF C4 68nF C6 56pF C2 0.1µF C8 22µF C5 220pF C9 22µF R5 6.04K R4 44.2K R2 24.3K R1 6.34K C12 1µF 25V 499 R3 EN VIN VOUT EN OS BST GND LX RS VL IN FB COMP AAT1189 TDFN 34-16 |
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