DATA SHEET AAT1230 18V, 100mA Step-Up Converter General Description Features The AAT1230/1230-1 is a high frequency, high efficiency V Range: 2.7V to 5.5V IN boost converter capable of 18V maximum output volt- Maximum Output: 18V 100mA age. The internal power switch can deliver 100mA load True Load Disconnect current. It is the ideal power solution to power OLED, Dynamic Voltage Control Options LCD, and CCD applications operating from a single cell Hysteretic Control lithium-ion battery. No External Compensation Components Excellent Load Transient Response Hysteretic control provides up to 2MHz switching fre- High Efficiency at Light Load quency and fast response to load transients with small, Up to 2MHz Switching Frequency low-cost external components. The fully integrated con- Ultra-Small Inductor and Capacitors trol IC simplifies the design while reducing the total PCB Integrated Low R MOSFET Switches DS(ON) footprint. The AAT1230/1230-1 offers a true load discon- Up to 85% Efficiency nect feature which isolates the load from the power <1A Shutdown Current source when EN/SET is pulled low. This eliminates leak- Integrated Soft Start age current and maintains zero voltage at the output Two Turn-On Time Options while disabled. AAT1230: T = 0.35ms SS The output voltage can be dynamically set by activating AAT1230-1: T = 3.5ms SS one of two reference levels (FB1 or FB2) through the SEL Cycle-by-Cycle Current Limit logic pin. Optionally, Skyworks Simple Serial Control Short-Circuit, Over-Temperature Protection 2 (S Cwire) single wire interface provides dynamic pro- Available in TSOPJW-12 or TDFN34-16 Package grammability across a wide output voltage range through -40C to +85C Temperature Range the EN/SET pin. The AAT1230/1230-1 are available in a Pb-free, thermal- Applications ly-enhanced 16-pin 3x4mm TDFN low-profile package or CCD Bias Circuit a Pb-free 12-pin TSOPJW package. Digital Still Cameras LCD Bias Circuit Mobile Handsets MP3 Players OLED Displays PDAs and Notebook PCs Typical Application L D 1 1 2.2H Schottky 18V 100mA VP LIN VIN C 1 V AAT1230/ BAT 2.2F R C 1 2 3.6V AAT1230-1 78.7k 2.2F, 25V SW PGND FB1 R 2 562 Enable/Set EN/SET FB2 Select SEL GND R 3 4.99k Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 202053A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. June 12, 2012 DATA SHEET AAT1230 18V, 100mA Step-Up Converter Pin Descriptions Pin TSOPJW-12 TDFN34-16 Symbol Function Input power pin connected to the source of the P-channel MOSFET. Connect to the 1 15, 16 VP input capacitor(s). 2 IC active high enable pin. Alternately, input pin for S Cwire control utilizing FB2 2 14 EN/SET reference. Logic high selects FB1 high output reference logic low selects FB2 low output refer- 3 13 SEL 2 ence. Pull low for S Cwire control. 4 12 VIN Input voltage for the converter. Connect this pin directly to the VP pin. 5 11 N/C No connection. Boost converter switching node. Connect the power inductor between this pin and 6, 7 9, 10 SW LIN pin. P ower ground for the boost converter connected to the source of the N-channel 8 6, 7, 8 PGND MOSFET. Connect to the input and output capacitor return. 9 5 GND Ground pin. Feedback pin for low output voltage set point. Pin set to 0.6V when SEL is low and 10 4 FB2 2 disabled when SEL is high. Voltage is set from 0.6V to 1.2V with S Cwire control. Feedback pin for high output voltage set point. Pin set to 1.2V when SEL is high and 11 3 FB1 2 disabled when SEL is low. Disabled with S Cwire control. 12 1, 2 LIN Switched power input. Connected to the power inductor. Exposed paddle (bottom). Tied to SW pins. May be connected to SW pins or left N/A EP oating. Pin Configuration TSOPJW-12 TDFN34-16 (Top View) (Top View) 1 16 VP LIN 1 12 VP LIN 2 15 LIN VP 2 11 EN/SET FB1 3 14 FB1 EN/SET 3 10 SEL FB2 4 13 FB2 SEL 4 9 5 12 VIN GND GND VIN 5 8 6 11 N/C PGND PGND N/C 6 7 7 10 PGND SW SW SW 8 9 PGND SW Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 202053A Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice. June 12, 2012