DATA SHEET TM AAT3221/AAT3222: 150 mA Nanopower LDO Linear Regulator Applications Description The AAT3221 and AAT3222 NanoPower Low Drop Out (LDO) Cellular phones linear regulators are ideal for portable applications where Digital cameras extended battery life is critical. These devices feature extremely Handheld electronics low quiescent current, typically 1.1 A. Dropout voltage is also very low, typically less than 200 mV at the maximum output Notebook computers current of 150 mA. The AAT3221/3222 have an enable pin which, PDAs when asserted, places the LDO regulator into shutdown mode, Portable communication devices removing power from its load and offering extended power conservation capabilities for portable battery-powered Remote controls applications. The AAT3221/3222 have output short-circuit and over-current Features protection. In addition, the devices also have an over-temperature Quiescent current: 1.1 A protection circuit that shuts down the LDO regulator during extended over-current events. Both devices are available with Low dropout: 200 mV (typical) active high or active low enable input. Guaranteed output: 150 mA The AAT3221 and AAT3222 are available in Pb-free, space-saving High accuracy: 2% 5-pin SOT23 packages. The AAT3221 is also available in a Current limit protection Pb-free, 8-pin SC70JW package. Since only a small, 1 F ceramic output capacitor is recommended, often the only space Over-temperature protection used is that occupied by the AAT3221 or AAT3222. The Extremely low power shutdown mode AAT3221/3222 provide a compact and cost-effective voltage Low temperature coefficient conversion solution. Factory-programmed output voltages: 1.5 V to 3.5 V Both devices are similar to the AAT3220, with the exception that they offer further power savings with an enable pin. Stable operation with virtually any output capacitor type A typical application circuit is shown in Figure 1. The pin Active high or low enable pin configuration is shown in Figures 2, 3, and 4. Signal pin Small, 5-pin SOT23 or 8-pin SC70JW (AAT3221 only) package assignments and functional pin descriptions are provided in (MSL1, 260 C per JEDEC-J-STD-020) Table 1. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 202251B Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice May 17, 2013 1 TM DATA SHEET AAT3221/AAT3222 150 mA NANOPOWER LDO LINEAR REGULATOR Figure 1. AAT3221/3222 Typical Application Circuit Figure 4. AAT3222 Pinout Figure 3. AAT3221 Pinout Figure 2. AAT3221 Pinout 5-Pin SOT23-5 (Top View) 8-Pin SC70JW-8 (Top View) 5-Pin SOT23-5 (Top View) Table 1. AAT3221/3222 Signal Descriptions Pin AAT3221 Name Description AAT3222 SOT23-5 SC70JW-8 1 2 2 IN Input pin. 2 5, 6, 7, 8 1 GND Ground connection pin. EN(EN) Enable input. Logic compatible enable with active high or active low option 3 4 5 available see Ordering Information and Applications Information for details. 4 3 4 NC Not connected. 5 1 3 OUT Output pin should be decoupled with 1 F or greater capacitor. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 May 17, 2013 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice 202251B