aoz1212 Alpha & Omega Semiconductor, aoz1212 Datasheet
aoz1212
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aoz1212 Summary of contents
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... General Description The AOZ1212 is a high ef ciency , simple to use, 3A buck regulator e xible enough to be optimized for a variety of applications. The AOZ1212 works from a 4.5V to 27V input voltage range, and provides continuous output current on each buck regulator output. The output voltage is adjustable down to 0.8V. ...
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... BST 2 GND GND FB 4 COMP 5 DFN-8 (Top Thru View) Pin Function IN pins need to be connected externally. IN www.aosmd.com AOZ1212 Environmental RoHS RoHS VBIAS 8 VIN COMP 5 if not used. Do not leave the EN IN rises above the UVLO threshold the Page ...
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... DFN-8 -0. Note: +150°C 2. The value of JA -65°C to +150°C FR-4 board with 2oz. Copper still air environment with T The value in any given application depends on the user's speci c 2kV board design. www.aosmd.com AOZ1212 VIN + ISen – BST GND Rating ) 4 ...
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... Min. V Rising IN V Falling 1.2V, V > 2V OUT 0.782 Off Threshold On Threshold T Rising J T Falling 0V www.aosmd.com AOZ1212 Typ. Max. Units V 4.5 27 4 µ 0.8 0.818 V 0 200 nA 0.6 V 2.5 mV 200 315 370 425 kHz 85 ...
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... Full Load (CCM) Operation Vin ripple 0.1V/div Vo ripple 20mV/div IL 1A/div VLX 20V/div Short Circuit Protection Vo 2V/div lin 0.5A/div Short Circuit Recovery Vo Ripple 200mV/div lo 1A/div www.aosmd.com AOZ1212 Vin ripple 0.1V/div Vo ripple 20mV/div IL 1A/div VLX 20V/div 1 s/div Vo 2V/div lL 2A/div 200 s/div Vo 2V/div IL 2A/div 2ms/div ...
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... Efficiency Curves Efficiency 100 95 3.3V OUTPUT 90 1.8V OUTPUT 0.2 0.5 0.8 1.1 1.4 1.7 2.0 2.3 Current (A) 100 Rev. 1.1 October 2007 100 2.6 2.9 3.2 0.2 0.5 0.8 Efficiency V = 24V IN 8.0V OUTPUT 5.0V OUTPUT 3.3V OUTPUT 0.2 0.5 0.8 1.1 1.4 1.7 2.0 2.3 2.6 Current (A) www.aosmd.com AOZ1212 Efficiency V = 12V IN 8.0V OUTPUT 5.0V OUTPUT 3.3V OUTPUT 1.1 1.4 1.7 2.0 2.3 2.6 2.9 3.2 Current (A) 2.9 3.2 Page ...
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... IN not leave EN open. The voltage on the EN pin must be above 2 enable the AOZ1212. When voltage on EN pin falls below 0.6V, the AOZ1212 is disabled application circuit requires the AOZ1212 to be disabled, an open drain or open collector circuit should be used to interface with the EN pin. ...
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... Input Capacitor The input capacitor (C in Figure 1) must be connected to 1 the V pin and GND pin of the AOZ1212 to maintain IN steady input voltage and lter out the pulsing input current. The voltage rating of the input capacitor must be greater than maximum input voltage + ripple voltage. ...
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... Schottky diode should be greater than the maximum input voltage, and the current rating should be greater than the maximum load current. Loop Compensation The AOZ1212 employs peak current mode control for easy use and fast transient response. Peak current mode O control eliminates the double pole effect of the output L& ...
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... COMP pin sets the pole-zero and is adequate for a stable high-bandwidth control loop. In the AOZ1212, FB pin and COMP pin are the inverting input and the output of internal transconductance error ampli series R and C compensation network connected to COMP provides one pole and one zero ...
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... The maximum junction temperature of AOZ1212 is 145°C, which limits the maximum load current capability. The thermal performance of the AOZ1212 is strongly affected by the PCB layout. Care should be taken by users during design process to ensure that the IC will operate under the recommended environmental conditions ...
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... VBIAS Rev. 1.1 October 2007 AOZ1212 3 GND 2 BST 1 LX Figure 3a. Layout Example for AOZ1212AI Cc Rc AOZ1212 R1 COMP GND GND Vin BST 7 2 Vin LX VBIAS 8 1 Figure 3a. Layout Example for AOZ1212DI www.aosmd.com AOZ1212 Page ...
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... D E1 3.80 3.90 4. 1.27 BSC e E 5.80 6.00 6. 0.25 — 0. 0.40 — 1. — 8 www.aosmd.com AOZ1212 Seating Plane 0. 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 0.157 0.050 BSC ...
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... Rev. 1.1 October 2007 P1 See Note 1.50 12.00 1.75 5.50 8.00 4.00 0.10 0.10 0.10 0.10 0. 13.00 17.40 ø13.00 10.60 2.00 0.30 1.00 +0.50/-0.20 0.50 Components Tape Leader Tape Orientation in Pocket 500mm min. or 125 empty pockets www.aosmd.com AOZ1212 See Note 3 Feeding Direction 2.00 0.25 0.10 0.10 0. — — — Page ...
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... E2 2.23 2.33 2.43 e 0.95 BSC L 0.50 0.55 0.60 L1 — 0.40 — L2 0.285 Ref. L3 0.835 Ref. aaa 0.15 bbb 0.10 ccc 0.10 ddd 0.08 eee 0.05 www.aosmd.com AOZ1212 Dimensions in inches Symbols Min. Nom. Max. A 0.028 0.30 0.032 A3 0.008 Ref. b 0.016 0.018 0.020 D 0.190 0.200 0.210 D2 0.080 0.085 0.089 D3 0.064 0.070 0.074 E 0.154 0.157 0.161 E2 0 ...
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... Leader/Trailer and Orientation Trailer Tape 300mm Min. Rev. 1.1 October 2007 1.50 1.50 12.00 1.75 5.50 Min. ±0.30 +0.10 / –0 ±0.10 ±0.10 Typ. Components Tape Orientation in Pocket www.aosmd.com AOZ1212 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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... Tape Size Reel Size M ø330 12mm ø330 +0.3 -4.0 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. 1.1 October 2007 12.40 2.40 0.5 +2.0 ±0.3 -0.0 II 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 AOZ1212 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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... AOZ1212 Package Marking AOZ1212AI Fab & Assembly Location AOZ1212DI Fab & Assembly Location Rev. 1.1 October 2007 Z1212AI Part Number FAY WLT Assembly Lot Code Year & Week Code Z1212DI Part Number FAY WLT Assembly Lot Code Year & Week Code www.aosmd.com ...
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... Rev. 1.1 October 2007 2. A critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its safety or effectiveness. www.aosmd.com AOZ1212 Page ...