AAT1151IKS-3.3-T1 AnalogicTech, AAT1151IKS-3.3-T1 Datasheet
AAT1151IKS-3.3-T1
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AAT1151IKS-3.3-T1 Summary of contents
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... General Description The AAT1151 SwitchReg™ member of AnalogicTech's Total Power Management IC™ (TPMIC™) product family. The step-down switching converter is ideal for applications where high effi- ciency is required over the full range of output load conditions. The 2.7V to 5.5V input voltage range makes the AAT1151 ideal for single-cell lithium- ion/polymer battery applications ...
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Pin Descriptions Pin # Symbol MSOP-8 QFN33- SGND VCC 5 10, 11 13, 14 PGND ...
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Absolute Maximum Ratings Symbol Description GND GND GND GND EN T Operating Junction Temperature Range J V ESD ...
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Electrical Characteristics 5V -40°C to 85°C, unless otherwise noted. Typical values are Symbol Description V Input Voltage Range IN V Output Voltage Tolerance OUT V Under-Voltage ...
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Typical Characteristics No Load Supply Current vs. Input Voltage 300 T = 85°C 250 200 150 T = -40° 25°C 100 50 0 2.5 3 3.5 4 Input Voltage (V) Output Voltage vs. Temperature 1.794 1.792 1.79 1.788 ...
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Typical Characteristics Output Ripple 1.8V, 50mA, V Circuit of Figure -10 -20 -30 -40 -50 -60 Time (2µ µ s/div) Output Ripple 1.8V, 0.7A, V Circuit of Figure -10 -20 -30 -40 ...
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Typical Characteristics Output Ripple Circuit of Figure 2. 4. Output Current (mA) 1151.2005.11.1.4 850kHz 700mA Synchronous Buck DC/DC Converter V = 3.6V IN 100 1000 AAT1151 ...
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Functional Block Diagram 1.0V REF FB SGND Operation Control Loop The AAT1151 is a peak current mode buck con- verter. The inner, wide bandwidth loop controls the peak current of the output inductor. The output inductor current is sensed through ...
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U1 AAT1151-QFN 2.7V-4. 100 Vcc 100k C1 7 10µ gnd 0.1µ n/c 100k 5 gnd C1 Murata 10µF 6.3V X5R GRM42-6X5R106K6.3 C3-C4 MuRata 22µF 6.3V GRM21BR60J226ME39L ...
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Input Capacitor The primary function of the input capacitor is to pro- vide a low impedance loop for the edges of pulsed current drawn by the AAT1151. A low ESR/ESL ceramic capacitor is ideal for this function. To mini- mize ...
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Figure 2: MSOP Evaluation Board Top Layer. Figure 4: QFN Evaluation Board Top Side. 45 R4=10kΩ 1.5 2 2.5 3 3.5 Output Voltage (V) Figure 6: R3 vs. V for ...
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Thermal Calculations There are two types of losses associated with the AAT1151 output switching MOSFET: switching loss- es and conduction losses. Conduction losses are associated with the R characteristics of the DS(ON) output switching device. At the full load condition, ...
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Design Example Specifications I 0.7A OUT I 40% of Full Load at Max V RIPPLE V 1.5V OUT V 2.7V to 4.2V (3.6V nominal 850kHz S T 85°C AMB Maximum Input Capacitor Ripple: ⎛ ⎞ ...
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AAT1151 Dissipation · (R · DSON(H) O DSON( TOTAL (0.7A) · (0.2Ω · 1.5V + 0.187Ω · (4.2V - 1.5V)) = 4.2V + Θ · P ...
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... JHXYY JHXYY MSOP-8 JIXYY JIXYY MSOP-8 JJXYY JJXYY MSOP-8 NKXYY MSOP-8 1.95 BSC 0.254 BSC 3.00 ± 0.10 10° ± 5° 0.30 ± 0.08 0.65 BSC AAT1151 Part Number (Tape and Reel) AAT1151IKS-1.0-T1 AAT1151IVN-1.0-T1 AAT1151IKS-1.8-T1 AAT1151IVN-1.8-T1 AAT1151IKS-2.5-T1 AAT1151IVN-2.5-T1 AAT1151IKS-3.3-T1 4° ± 4° 0.60 ± 0.20 0.155 ± 0.075 3 15 ...
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... AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights, or other intellectual property rights are implied. AnalogicTech reserves the right to make changes to their products or specifications or to discontinue any product or service without notice. ...