AAT1299 Analog Devices, AAT1299 Datasheet
AAT1299
Available stocks
Related parts for AAT1299
AAT1299 Summary of contents
Page 1
... Light load switching frequency modulation and low quiescent current maintain high efficiency perform- ance for light load and sleep mode conditions. With a 1A peak switch current limit, the AAT1299 is capable of delivering 200mA to the load from a 1.8V input. The AAT1299 is available in a Pb-free, space-sav- ing 2 ...
Page 2
... Boost converter output voltage; connects to the P-channel synchronous MOS- FET source. Bypass with ceramic capacitor to GND. Signal and power ground. Connect output capacitor return. Not connected. Exposed paddle (bottom). Connect to ground as closely as possible to the device. GND Die AAT1299 STDFN-10 (Top View ...
Page 3
... Only one Absolute Maximum Rating should be applied at any one time. 2. Mounted on a FR4 board. 1299.2007.06.1.0 Low Voltage 2MHz Step-Up DC/DC Converter 1 2 SC70JW-8 STDFN-10 SC70JW-8 STDFN-10 AAT1299 Value Units -0.3 to 6 -40 to 150 °C 300 ° ...
Page 4
... Maximum Duty Cycle TYMAX V Logic Input Low Threshold for EN TH(L-IN) V Logic Input High Threshold for EN TH(H-IN) 1. The AAT1299 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correlation with statistical process controls Q_VOUT ...
Page 5
... Light Load Mode Output Current 120 100 120 140 160 1.0 1.2 AAT1299 Dual-Cell to 3.3V Efficiency 100 Output Current (mA) Dual-Cell Load Regulation (V = 3. 100 Output Current (mA) Threshold vs. Input Voltage ...
Page 6
... Temperature (° ° Low Voltage 2MHz Step-Up DC/DC Converter Switching Frequency vs. Temperature 0.5 0.0 -0.5 -1.0 -1.5 -2.0 -2.5 -40 2.2 2.4 2.6 2.8 3.0 0.15 0.10 0.05 0.00 2.4 2.6 2.8 3.0 3.34 3.32 3.30 3.28 3. AAT1299 - Temperature (° ° C) Load Transient Response (V = 1.2V 2.2µ 4.7µ 3.40 3.35 3.30 3.25 3.20 100mA 50mA Time (50µs/div) Line Transient Response (I = 50mA 2.2µ 4.7µ 2.50 2.4V 2.25 2.00 1.9V 1.75 1.50 Time (50µs/div) 1299 ...
Page 7
... Low Voltage 2MHz Step-Up DC/DC Converter = 3.3V) O 1.75 4 1 Enable 0.75 0 0 -0. OUT (AC Coupled) (20mV/div) (200mA/div) V (2V/div) AAT1299 Soft-Start Inrush Current (V = 2.4V 100mA 3.3V Output Voltage Enable Input Current Time (500µs/div) Light Load Output Ripple (V = 1.2V; 10mA Load Time (1µs/div) 1.75 1.5 1.25 1 0.75 0.5 0. ...
Page 8
... Functional Block Diagram VCC Voltage Reference GND Functional Description The AAT1299 synchronous step-up converter is targeted for single- or dual-cell alkaline, NiMH, and NiCd battery applications. It has a 1V typical start- up voltage. The high 2MHz switching frequency of the AAT1299 facilitates output filter component size reduction for improved power density and reduced overall footprint ...
Page 9
... Even the best switch-mode power supply design cannot overcome the problems that can be caused by a poor layout. For the AAT1299 necessary that C1 and C2 be placed as close as possible to the IC with a good low impedance path to the GND pins of the IC also good practice to minimize the length of the trace from the OUT pin to the output inductor ...
Page 10
... Figure 1: AAT1299 Evaluation Board Top Side. Enable Figure 4: AAT1299 Evaluation Board Schematic. 10 Low Voltage 2MHz Step-Up DC/DC Converter Figure 3: AAT1299 Evaluation Board Bottom Side AAT1299 1 8 VCC GND GND VIN GND OUT L1 2.2μH C2 4.7μF U1 AAT1299 SC70JW-8 L1 SD3118-2R2 C1, C2 4.7μ ...
Page 11
... Input Capacitor 6.3V Output or Input Capacitor 10V Input Capacitor 6.3V Part I DCR SAT Inductor 1.50A 75mΩ Inductor 1.62A 69mΩ AAT1299 Case Size Part Number 0805 GRM21BR61A475KA73L 0603 GRM188R60J475KE19D 0805 C2012X5R1A475K 0603 C1608X5ROJ475K 0805 LMK212BJ475MG 0603 JMK107BJ475MA Case Size Part Number 3 ...
Page 12
... A solder fillet at the exposed copper edge cannot be guaranteed and is not required to ensure a proper bottom solder connection. 12 Low Voltage 2MHz Step-Up DC/DC Converter Marking 1 Part Number (Tape and Reel) YRXYY YQXYY AAT1299 SC70JW-8 0.225 ± 0.075 0.100 0.45 ± 0.10 2.10 ± 0.30 AAT1299 2 AAT1299IJS-3.3-T1 AAT1299IOQ-3.3-T1 AAT1299IZZ-3.3 0.048REF 4° ± 4° 1299.2007.06.1.0 ...
Page 13
... Top View 0.025 ± 0.025 Side View Please contact your local AnalogicTech Sales representative. 1299.2007.06.1.0 Low Voltage 2MHz Step-Up DC/DC Converter STDFN-10 1.000 ± 0.050 Bottom View Pin 1 Indicator (optional) R0.200 Detail "A" Die AAT1299 Detail "A" 0.350 ± 0.050 13 ...
Page 14
... Specific testing of all parameters of each device is not necessarily performed. AnalogicTech and the AnalogicTech logo are trademarks of Advanced Analogic Technologies Incorporated. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. Advanced Analogic Technologies, Inc. 830 E. Arques Avenue, Sunnyvale, CA 94085 Phone (408) 737-4600 Fax (408) 737-4611 14 Low Voltage 2MHz Step-Up DC/DC Converter AAT1299 1299.2007.06.1.0 ...