aoz1905 Alpha & Omega Semiconductor, aoz1905 Datasheet
aoz1905
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aoz1905 Summary of contents
Page 1
... Other features include input under-voltage lockout, cycle-by-cycle current limit, thermal shutdown and soft-start. The AOZ1905 is available in a tiny 3mm x 3mm 10-pin DFN package and MSOP8 package and is rated over a -40°C to +85°C operating temperature range. ...
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... Boost Regulator Switching Node. Input Supply Pin. Frequency Select Pin. The switching frequency is 1.2MHz when FSEL is connected to IN, and 600kHz when FSEL is connected to ground. Soft-Start Pin. Connect a capacitor from SS to GND to set the soft-start period. www.aosmd.com AOZ1905 Environmental Green RoHS Compliant SS 10 ...
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... Supply Voltage (V -0.3V to +6V Output Voltage (V -65°C to +150°C Ambient Temperature (T 2kV Package Thermal Resistance MSOP-8 ( DFN-10 R Bias Q Generator S EN OSC PWM Comp Soft-Start www.aosmd.com AOZ1905 Parameter Rating ) 2. 24V OUT IN ) -40°C to +85° 150°C/W JA 48°C/W 4.7µH VOUT ...
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... GND 1.143 V = 2.7V IN 2.7V < V < 5.5V IN 0.2A < Iswitch < 1.8A 16V OUT 7 FSEL = V 960 IN FSEL = GND 480 V = 2.7V IN FSEL = V IN FSEL = GND LX = 24V GND 2 1.5 0. www.aosmd.com AOZ1905 Typ. Max. Units 5.5 V 2.6 V 200 µA 1.17 1.197 V 1 µ µA 200 µS 340 ...
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... Load Transient Response (I = 40mA–400mA 600kHz OUT LX Vo Ripple 200mV/div Io 0.2A/div 200 s/div Startup Waveform (R = 200 , f = 600kHz 4.7 H) OUT LX VEN 2V/div Vo 5V/div IL 0.5A/div 200 s/div www.aosmd.com AOZ1905 LVX 5V/div IL 0.5A/div Vo Ripple 200mV/div Io 0.2A/div VEN 2V/div Vo 5V/div IL 0.5A/div Page ...
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... L= =1.2MHz, L=4 100 1,000 1 AOZ1905 Efficiency (V = 3.3V 8V) IN OUT f =600kHz, L= =1.2MHz, L=4 100 Load Current (mA) www.aosmd.com AOZ1905 AOZ1905 Efficiency ( 12V) IN OUT f =600kHz, L= =1.2MHz, L=4 100 1,000 Load Current (mA) 1,000 Page ...
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... SS voltage clamps the reference voltage of the error amplifier, therefore output voltage rising time follows the SS pin voltage. With the slow ramping up output voltage, the inrush current can be prevented. The EN pin of the AOZ1905 is active high. Connect the EN pin enable function is not used. Pulling ground will disable the AOZ1905 ...
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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 AOZ1905 to maintain IN steady input voltage. The voltage rating of input capacitor must be greater than maximum input voltage + ripple voltage. The RMS current rating should be greater than ...
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... COMP pin sets the pole-zero and is adequate for a stable high-bandwidth control loop. In the AOZ1905, FB pin and COMP pin are the inverting input and the output of internal transconductance error amplifier. A series R and C compensation network con- nected to COMP provides one pole and one zero ...
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... A ground plane is recommended to connect input capacitor, output capacitor, and GND pin of the AOZ1905. In the AOZ1905 boost regulator circuit, the three major power dissipating components are the AOZ1905 and output inductor. The total power dissipation of converter circuit can be measured by input power minus output power ...
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... Figure 3. Multiple-Output, Low-Profile TFT LCD Power Solution. Rev. 1.4 May 2008 application, it usually needs several output sources – Vo1 = 9V, Vo2 = -9V and Vo3 = 26V. Using one AOZ1905 can easily supply the whole power solution to obtain three outputs. The detailed schematic is shown in Figure 4. ...
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... D 2.95 3.00 3.05 E 2.95 3.00 3.05 e 0.65 TYP. E1 4.90 TYP. L1 0.40 0.55 0.70 L2 0.90 0.95 1.00 L3 0.25 BSC θ 0° — www.aosmd.com AOZ1905 Seating Plane Dimensions in inches Symbols Min. Nom. Max. A — — 0.043 A1 0.002 — 0.006 A2 0.032 0.034 0.036 b 0.010 0.012 0.016 c 0.005 0.006 0.010 D 0.116 0.118 0.120 E 0.116 0.118 ...
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... Min ø97.00 13.00 17.40 ø13.00 10.60 ±0.10 ±0.30 ±1.00 +0.50/-0.20 Components Tape Orientation in Pocket www.aosmd.com AOZ1905 Feeding Direction 1.75 5.50 8.00 2.00 4.00 ±0.10 ±0.05 ±0.10 ±0.05 ±0. 2.00 — — — ±0.50 Leader Tape 500mm min ...
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... D 3.00 BSC D1 2.23 2.38 2.48 E 3.00 BSC E1 1.50 1.65 1.75 e 0.50 BSC L 0.30 0.30 0.50 R 0.20 aaa 0.15 bbb 0.10 ccc 0.10 ddd 0.08 www.aosmd.com AOZ1905 10 Pin #1 ID Option Pin #1 ID Option 2 BOTTOM VIEW Dimensions in inches Symbols Min. Nom. Max. A 0.028 0.030 0.031 A1 0.000 0.001 0.002 b 0.007 0.010 0.012 c — 0.006 0.008 D ...
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... 1.00 1.50 8.00 1.75 ±0.10 ±0.10 ±0.05 +0.30/-0.10 +0.25/-0. ø180 ø180.00 60.0 8.4 13.0 ±0.50 ±0.50 ±0.20 +1.5/-0.0 Components Tape Orientation in Pocket www.aosmd.com AOZ1905 Feeding Direction 3.50 4.00 4.00 2.00 0.23 ±0.10 ±0.10 ±0.05 ±0. 1.5 13.5 3.0 ±0.50 Min. Min. Leader Tape 500mm min. Page ...
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... Assembly Location Assembly Lot Number 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 AOZ1905 Page ...