aoz1056 Alpha & Omega Semiconductor, aoz1056 Datasheet
aoz1056
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aoz1056 Summary of contents
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... General Description The AOZ1056 is a high efficiency, simple to use, 2A buck regulator. The AOZ1056 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 AOZ1056 comes in an SO-8 package and is rated over a -40°C to +85°C ambient temperature range. ...
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... Package SO-8 for additional information. VIN PGND AGND COMP SO-8 (Top View) Pin Function rises above the UVLO threshold the device starts up www.aosmd.com AOZ1056 Environmental RoHS Compliant Green Product if not used. Do not leave the EN pin Page ...
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... Bias 0.8V EAmp FB – COMP Over Voltage Protection Comparator + 0.96V – Rev. 1.2 September 2008 Internal 5V LDO OTP +5V Regulator ILimit + PWM PWM – Control Comp Logic + 350kHz Oscillator AGND www.aosmd.com AOZ1056 VIN + ISen – Q1 Level Shifter + LX FET Driver PGND Page ...
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... V = 1.2V, V OUT Off Threshold On Threshold Off Threshold On Threshold T Rising J T Falling 12V www.aosmd.com AOZ1056 Rating ) 4.5V to 16V IN 0. -40°C to +85°C A 105°C measured with the device mounted on 1- Min. Typ. Max. Units 4 4.00 V 3.70 >1.2V ...
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... OUT Vin ripple 0.1V/div Vo ripple 20mV/div VLX 5V/div Vo 2V/div lin 1A/div Vo Ripple 50mV/div lo 1A/div www.aosmd.com AOZ1056 Full Load (CCM) Operation Vin ripple 0.1V/div Vo ripple 20mV/div VLX 5V/div 2s/div Short Circuit Protection Vo 2V/div lL 1A/div 10ms/div Short Circuit Recovery Vo 2V/div ...
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... Efficiency 0.2 Rev. 1.2 September 2008 Efficiency (V = 12V) vs. Load Current IN 5.0V OUTPUT 3.3V OUTPUT 1.8V OUTPUT 0.4 0.6 0.8 1.0 1.2 1.4 Load Current (A) www.aosmd.com AOZ1056 1.6 1.8 2.0 Page ...
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... Soft-Start Capacitor (nF) The EN pin of the AOZ1056 is active high. Connect the EN pin enable function is not used. Pulling ground will disable the AOZ1056. Do not leave it open. Rev. 1.2 September 2008 The voltage on EN pin must be above 2.0V to enable the AOZ1056. When voltage on EN pin falls below 0.6V, the AOZ1056 is disabled ...
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... The basic AOZ1056 application circuit is shown in Figure 1. Component selection is explained below. Input Capacitor The input capacitor (C to the V pin and PGND pin of the AOZ1056 to maintain IN steady input voltage and filter out the pulsing input current. A small decoupling capacitor (C usually 1µF, should be connected to the V AGND pin for stable operation of the AOZ1056 ...
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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 value and ESR. It can be calculated by the equation below: ΔV Δ www.aosmd.com AOZ1056 ⎛ V ⎞ O × ⎜ 1 ⎟ -------- - – ...
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... COMP pin sets the pole-zero and is adequate for a stable high-bandwidth control loop. In the AOZ1056, 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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... Current flows in the first loop when the high side switch is on. The second loop starts from inductor, to the output capacitors and load, to the PGND pin of the AOZ1056, to the LX pin of the AZO1056. Current flows in the second loop when the low side diode is on. ...
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... Rev. 1.2 September 2008 may be coupled to other part of , GND or circuit Keep sensitive signal trace such as trace connected with FB pin and COMP pin far away form the LX pins. L PGND 8 Cout Figure 3. AOZ1056 PCB Layout www.aosmd.com AOZ1056 Vo Page ...
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... E1 e 1.27 BSC e E 5.80 6.00 6. 0.25 — 0. 0.40 — 1.27 L θ θ 0° — 8° www.aosmd.com AOZ1056 Seating Plane 0. θ Min. Nom. Max. 0.053 0.065 0.069 0.004 — 0.010 0.049 0.059 0.065 0.012 — 0.020 0.007 — 0.010 0.189 0.193 0.197 0.150 0.154 ...
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... ø97.00 13.00 17.40 ø13.00 ±0.10 ±0.30 ±1.00 +0.50/-0.20 Components Tape Orientation in Pocket www.aosmd.com AOZ1056 Feeding Direction 8.00 4.00 2.00 0.25 ±0.10 ±0.10 ±0.10 ±0. 10.60 2.00 — — — ±0.50 Leader Tape 500mm min ...
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... AOZ1056 Package Marking Fab & Assembly Location LIFE SUPPORT POLICY ALPHA & OMEGA SEMICONDUCTOR PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into ...