aoz1240 Alpha & Omega Semiconductor, aoz1240 Datasheet
aoz1240
Related parts for aoz1240
aoz1240 Summary of contents
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... General Description The AOZ1240 is a high efficiency, simple to use, 2A buck regulator flexible enough to be optimized for a variety of applications. The AOZ1240 works from a 4.5V to 32V 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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... LX VBIAS 1 8 BST VIN 2 7 GND COMP SO-8 (Top View) Pin Function pins need to be connected externally. IN www.aosmd.com AOZ1240 Environmental Green Product if not used. Do not leave the EN IN rises above the UVLO threshold the IN Page ...
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... The value of +150°C FR-4 board with 2oz. Copper still air environment with T -65°C to +150°C 25°C. The value in any given application depends on the user's spe- cific board design. 2kV in series with 100pF. www.aosmd.com AOZ1240 VIN + ISen – BST ...
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... Conditions V Rising IN V Falling 1.2V, V > 2V OUT Off Threshold On Threshold T Rising J T Falling 0V www.aosmd.com AOZ1240 Min. Typ. Max. Units 4 4 µA 0.782 0.8 0.818 V 0 200 nA 0.6 V 2.5 200 mV 315 370 425 ...
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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 AOZ1240 Vin ripple 0.1V/div Vo ripple 20mV/div IL 1A/div VLX 20V/div 1μs/div Vo 2V/div lL 2A/div 200μs/div Vo 2V/div IL 2A/div 2ms/div ...
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... Efficiency Curves Efficiency 100 0.5 1.0 1.5 Current (A) 100 Rev. 1.3 September 2010 100 95 3.3V OUTPUT 90 85 1.8V OUTPUT 80 75 2.0 2.5 3.0 0 0.5 Efficiency V = 24V IN 8.0V OUTPUT 5.0V OUTPUT 3.3V OUTPUT 0 0.5 1.0 1.5 2.0 Current (A) www.aosmd.com AOZ1240 Efficiency V = 12V IN 8.0V OUTPUT 5.0V OUTPUT 3.3V OUTPUT 1.0 1.5 2.0 2.5 3.0 Current (A) 2.5 3.0 Page ...
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... The 6.8ms soft start time is set internally. Connect the EN pin enable function is not used. IN Pull it to ground will disable the AOZ1240. Do not leave it open. The voltage on EN pin must be above 2 enable the AOZ1240. When voltage on EN pin falls below 0.6V, the AOZ1240 is disabled application ...
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... When cycle by cycle current limit circuit is triggered, the output voltage drops as the duty cycle decreasing. The AOZ1240 has internal short circuit protection to pro- tect itself from catastrophic failure under output short cir- cuit conditions. The FB pin voltage is proportional to the output voltage. Whenever FB pin voltage is below 0.2V, the short circuit protection circuit is triggered ...
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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 AOZ1240 employs peak current mode control for ⎞ easy use and fast transient response. Peak current mode ⎠ ...
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... The second loop starts from inductor, to the output capacitors and load, to the GND pin of the AOZ1240, to the LX pins of the AZO1240. Current flows in the second loop when the low side diode is on. ...
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... ⎜ 1 -------- - = – diode_loss ⎝ IN The actual AOZ1240 junction temperature can be calculated with power dissipation in the AOZ1240 and thermal impedance from junction to ambient – P junction total_loss inductor_loss + + T ambient The maximum junction temperature of AOZ1240 is 145°C, which limits the maximum load current capability. ...
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... Rev. 1.3 September 2010 Figure 3. Layout Example for AOZ1240 www.aosmd.com AOZ1240 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 AOZ1240 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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... 13.00 17.40 ø13.00 10.60 2.00 ±0.30 ±1.00 ±0.50 +0.50/-0.20 Components Tape Leader Tape Orientation in Pocket 500mm min. or 125 empty pockets www.aosmd.com AOZ1240 See Note 3 Feeding Direction 4.00 2.00 0.25 ±0.10 ±0.10 ±0. — — — Page ...
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... WLT Assembly Lot Code Year & Week Code 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 AOZ1240 Page ...