aoz1012d Alpha & Omega Semiconductor, aoz1012d Datasheet
aoz1012d
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aoz1012d Summary of contents
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... General Description The AOZ1012D is a high efficiency, simple to use, 3A buck regulator. The AOZ1012D works from a 4.5V to 16V input voltage range, and provides continuous output current with an output voltage adjustable down to 0.8V. The AOZ1012D comes in 4x5 DFN-8 packages and is rated over a -40°C to +85°C ambient temperature range. ...
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... UVLO threshold the device starts up Internal 5V LDO OTP +5V Regulator ILimit + Level PWM PWM Shifter – Control Comp + Logic FET + Driver 500kHz Oscillator AGND www.aosmd.com AOZ1012D Environmental RoHS if not used. Do not leave the EN pin floating. VIN + ISen – PGND Page ...
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... Falling VFB = 1.2V, V OUT Off Threshold On Threshold T Rising J T Falling 12V www.aosmd.com AOZ1012D Rating ) 4.5V to 16V IN 0. -40°C to +85°C A 53°C measured with the device mounted on 1-in = 25°C. The A Min. Typ. Max. Units 4 4.0 V 3.7 > ...
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... IL 2A/div VLX 10V/div 1 s/div Full Load to Turnoff Vin 5V/div Vo 1V/div Iin 2A/div 1ms/div No Load to Turnoff Vo Ripple 0.1V/div Io 2A /div 1s/div www.aosmd.com AOZ1012D Vin ripple 0.1V/div Vo ripple 20mV/div IL 2A/div VLX 10V/div Vin 5V/div Vo 1V/div Iin 0.5A/div Vin 5V/div Vo 1V/div Iin 2A/div ...
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... C ambient temperature and natural convection (air speed < 50LFM) unless otherwise specified. Derating Curve at 5V Input 3.5 5.0V OUTPUT 3.0 3.3V OUTPUT 2.5 2.0 1.5 1 Ambient Temperature (T Rev. 1.2 February 2007 (Continued) = 3.3V unless otherwise specified. OUT Vo 2V/div IL 2A/div AOZ1012DI Efficiency Efficiency (V = 12V) vs. Load Current IN 8.0V OUTPUT 5.0V OUTPUT 3.3V OUTPUT 0.5 1.0 1.5 2.0 Load Current (A) 3.5 3.0 2.5 1.8V OUTPUT 2.0 1.5 1 ...
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... EN pin is HIGH. In soft start process, the output voltage is ramped to regulation voltage in typically 4ms. The 4ms soft start time is set internally. The EN pin of the AOZ1012D is active high. Connect the EN pin enable function is not used. Pulling ground will disable the AOZ1012D ...
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... Figure 1. Component selection is explained below. Input Capacitor The input capacitor must be connected to the V PGND pin of AOZ1012D to maintain steady input voltage and filter out the pulsing input current. The voltage rating of input capacitor must be greater than maximum input voltage plus ripple voltage. ...
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... Output ripple voltage specification is another important factor for selecting the output capacitor buck converter circuit, output ripple voltage is determined by inductor value, switching frequency, output capacitor L1 www.aosmd.com AOZ1012D Manufacture ELYTONE Coilcraft Coilcraft Coilcraft ELYTONE Coilcraft ...
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... COMP pin sets the pole-zero and is adequate for a stable high-bandwidth control loop. In the AOZ1012D, FB pin and COMP pin are the inverting input and the output of internal transconductance error amplifier. A series R and C compensation network connected to COMP provides one pole and one zero ...
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... The second loop starts from the inductor, to the output capacitors and load, to the PGND pin of the AOZ1012D, and to the LX pins of the AZO1010. Current flows in the second loop when the low side diode is on. In PCB layout, minimizing the two loops area reduces the noise of this circuit and improves effi ...
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... The thermal performance of the AOZ1012D is strongly affected by the PCB layout. Extra care should be taken by users during the design process to ensure that the IC will operate under the recommended environmental conditions. Several layout tips are listed below for the best electric and thermal performance. Figure 3 below illustrates a PCB layout example as a reference ...
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... BSC E2 2.500 2.650 E3 2.050 2.200 e 0.95 BSC L 0.600 0.700 L1 0.400 0.500 R 0.30 REF aaa – 0.15 bbb – 0.10 ccc – 0.10 ddd – 0.08 www.aosmd.com AOZ1012D Dimensions in inches Max. Symbols Min. Nom. Max. 1.00 A 0.031 0.035 0.039 0.05 A1 0.000 0.001 0.002 A3 0.008 REF 0.45 b 0.014 0.016 ...
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... B0 K0 Unit: mm Package DFN 5x4 5.30 4.30 1.20 (12 mm) 0.10 0.10 0.10 Leader/Trailer and Orientation Trailer Tape (300mm Min.) Rev. 1.2 February 2007 1.50 1.50 12.00 1.75 5.50 Min. +0.10 / –0 0.30 0.10 0.10 Typ. Components Tape Orientation in Pocket www.aosmd.com AOZ1012D E1 D0 Feeding Direction 8.00 4.00 2.00 0.30 0.10 0.20 0.10 0.05 Leader Tape (500mm Min.) Page ...
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... Reel Dimensions, DFN 5x4 II M 6.45±0.05 6.2 8.9±0.1 14 REF 11.90 41.5 REF 43.00 44.5±0.1 10.0 A 2.00 6.50 Rev. 1.2 February 2007 Zoom In A N=ø100±2 1.8 2.20 5.0 1.8 12 REF 6.50 VIEW: C 8.0±0.1 10.71 6° www.aosmd.com AOZ1012D 6.0±1 I Zoom III Zoom In 3-1.8 0. 6.0 8.00 0.00 -0.05 R1 2.00 C 46.0±0.1 44.5±0.1 3.3 4.0 6.10 40° 2.5 0.80 1.80 3.00 +0.05 8.00 0.00 Page ...
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... AOZ1012D Package Marking Fab & Assembly Location Rev. 1.2 February 2007 Z1012DI Part Number Code FAYWLT Assembly Lot Code Year & Week Code www.aosmd.com AOZ1012D Page ...