aoz1213 Alpha & Omega Semiconductor, aoz1213 Datasheet
aoz1213
Related parts for aoz1213
aoz1213 Summary of contents
Page 1
... The AOZ1213 is a high efficiency, simple to use, buck regulator plus one linear regulator controller optimized for a variety of applications. The AOZ1213 works from a 4.5V to 28V wide input voltage range. The buck regulator provides continuous output current. Each output voltage is adjustable down to 0.8V. ...
Page 2
... Input Supply Pin. The input range is between 4.5V and 28V. Rev. 1.3 November 2009 Package 4x3 DFN-12 for additional information BIAS 2 11 BST AGND 3 10 PGND LDRV 4 9 AGND EN FB2 5 8 FB1 COMP 6 7 DFN-12 (Top View) Pin Function www.aosmd.com AOZ1213 Environmental RoHS Compliant Green Product Page ...
Page 3
... The value of Θ -0.3V to 30V FR-4 board with 2oz. Copper still air environment with T +150°C The value in any given application depends on the user's specific board design. -65°C to +150°C 2kV in series with 100pF. www.aosmd.com AOZ1213 VIN + ISen – BST PGND ...
Page 4
... VFB = 1.2V, V >2V OUT 0.788 Off Threshold On Threshold 2.5 315 4 T Rising J T Falling 0V Vfb2 = 0.7V, LDRV, Iout = 20mA, 4 Iout1 = 0 Vfb2 = 0.7V, Iout1 = 0 10 www.aosmd.com AOZ1213 Typ. Max. Units 28 V 4 μ 0.8 0.812 V 0.5 % 0.1 % 200 nA 0 200 370 ...
Page 5
... Load (A) VFB1 vs. Vin (Vin = 12V, Vout = 3.3V 6.8µH, 25°C) 0.85 0.84 0.83 0.82 0.81 0.8 0.79 0.78 0.77 0.76 0. Vin (V) www.aosmd.com AOZ1213 Efficiency (Vin = 5V 6.8µH) 100% 95% 3.3V OUTPUT 90% 1.8V OUTPUT 85% 80% 75% 70 0.5 1 1.5 2 2.5 Load Current (A) Soft Start Time ( Vin = 12V, Vout = 3.3V 6.8µH, 25° ...
Page 6
... Temperature (°C) LDRV Source Current vs. Temperature (VFB2 = 0.7V, LDRV = 4V -45 -30 - Temperature (°C) Vo Ripple 200mV/Div Io 1A/div www.aosmd.com AOZ1213 VFB1 vs. Temperature (Vin = 12V, Vout = 3.3V 6.8µH) 0.85 0.84 0.83 0.82 0.81 0.8 0.79 0.78 0.77 0.76 0.75 90 -45 -30 - Temperature (°C) EN Off vs. Temperature (Vout = 3.3V 6.8µ ...
Page 7
... Pulling EN to ground will disable the AOZ1213. Do not leave it open. The voltage on EN pin must be above 2 enable the AOZ1213. When voltage on EN pin falls below 0.6V, the AOZ1213 is disabled application circuit requires the AOZ1213 to be disabled, an open drain or open collector circuit should be used to interface to the EN pin ...
Page 8
... Input Capacitor The input capacitor (C in Figure 1) must be connected to 1 the V pin and GND pin of the AOZ1213 to maintain IN 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. ...
Page 9
... ESR For lower output ripple voltage across the entire operating temperature range, X5R or X7R dielectric type of ceramic, or other low ESR tantalum capacitor or aluminum electrolytic capacitor may also be used as output capacitors. www.aosmd.com AOZ1213 1 ⎞ ------------------------- + ⎠ × × ⎞ ...
Page 10
... COMP pin sets the pole-zero and is adequate for a stable high-bandwidth control loop. In the AOZ1213, 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. ...
Page 11
... Solid tantalum electrolytic, aluminum electrolytic, and multilayer ceramic capacitors are all suitable, only if the capacitance and ESR of them meet the requirements. www.aosmd.com AOZ1213 must be large enough so that FE may cause the LDO to be sensitive to FE multiplied by the ...
Page 12
... The second loop starts from inductor, to the output capacitors and load, to the GND pin of the AOZ1213, to the LX pins of the AZO1213. 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 efficiency ...
Page 13
... Layout Example of the AOZ1213 Rev. 1.3 November 2009 Figure 3a. Top Side Figure 3b. Bottom Side www.aosmd.com AOZ1213 Page ...
Page 14
... D1 0.83 0.985 D2 1.86 2.015 E 3.00 BSC E1 1.45 1.60 e 0.50 BSC L 0.30 0.40 0.30 L1 0.61 0.715 L2 0.21 0.315 L3 0.30 REF. aaa 0.15 Unit: mm bbb 0.10 ccc 0.10 ddd 0.08 www.aosmd.com AOZ1213 E1 BOTTOM VIEW A3 Seating Plane 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. 0.35 b 0.008 0.009 ...
Page 15
... 1.10 1.50 1.50 12.0 1.75 ±0.3 ±0.10 ±0.05 Min. +0.10/-0 ø79.0 12.4 17.0 ø13.0 ±1.0 ±0.5 +2.0/-0 +2.6/-0 Components Tape Orientation in Pocket www.aosmd.com AOZ1213 Feeding Direction 5.50 8.00 4.00 2.00 0.30 ±0.10 ±0.10 ±0.10 ±0. 10.5 2.0 — — — ±0.2 ±0.5 Leader Tape 500mm Min ...
Page 16
... FAYWLT 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 AOZ1213 Page ...