aoz1960 Alpha & Omega Semiconductor, aoz1960 Datasheet
aoz1960
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aoz1960 Summary of contents
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... The AOZ1960 features programmable switching frequency allows for trade-offs between solution size and electrical efficiency. The AOZ1960 is available in a thermally enhanced 24-pin 7mm x 4mm DFN package and operates over the temperature range of -40°C to +85°C. Rev. 1.0 August 2010 ...
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... Rev. 1.0 August 2010 L1 D1 10μ 500kΩ OVP C4 R2 4.7μF 12.5kΩ AGND PGND COMP R5 10kΩ C6 100nF ISET R4 46.4kΩ LED1 LED2 LED3 LED4 LED5 LED6 Package DFN-24 for additional information. www.aosmd.com AOZ1960 C8 4.7μF Environmental Green Product Page ...
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... ISET AGND COMP FSET AGND ABRT DBRT Rev. 1.0 August 2010 AOZ1960DI LIN AGND FLT 11 OVP 12 7x4 DFN-24 (Top View) www.aosmd.com AOZ1960 LIN 24 LIN 23 LED1 22 LED2 21 LED3 20 AGND 19 LED4 18 LED5 17 LED6 16 PGND Page ...
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... Internal LED Current Regulator 3 Input. 20 LED3 Internal LED Current Regulator 4 Input. 21 LED2 Internal LED Current Regulator 5 Input. 22 LED1 Internal LED Current Regulator 6 Input. 23, 24 LIN Boost Regulator Input Pin. LIN is drain of the input protection switch. Rev. 1.0 August 2010 Pin Function www.aosmd.com AOZ1960 Page ...
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... Rev. 1.0 August 2010 VLIM OSC PWM Comp Gm Error Amp Min Current Regulator 1 Current Regulator 2 Analog Dimming Control Current Regulator 3 PWM Dimming Current Control Regulator 4 Current Regulator 5 Current Regulator 6 www.aosmd.com AOZ1960 OVP COMP LED1 LED2 LED3 LED4 LED5 LED6 Page ...
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... Conditions 10 LEDs per channel (3.2V/20mA type AGND 46.4kΩ ISET ILED_ = 20mA V = 36V LED_ ILED_ = 20mA (2) www.aosmd.com AOZ1960 Rating ) 7V to 24V IN ) -40°C to +85°C A 45°C Min. Typ. Max. Units 7 24 2.5 mA μ ...
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... EN Logic High Threshold VEN_L EN Logic Low Threshold VEN_HYS EN Input Hysteresis IEN EN Leakage Current FSEL Leakage Current Note: 2. DBRT Input Frequency is guaranteed by design only. Rev. 1.0 August 2010 Conditions RSEL = 84.5kΩ www.aosmd.com AOZ1960 Min. Typ. Max. Units 800 1000 1200 kHz 87 % Ω 0.14 0.20 μ ...
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... Input Voltage (V) PWM Dimming Linearity 24.0 20.0 16.0 12.0 8.0 4.0 0 PWM Duty Cycle (%) Rev. 1.0 August 2010 20.6 20.4 20.2 20.0 19.8 19.6 19 24.0 20.0 16.0 12.0 8.0 4.0 0 100 0.0 0.4 www.aosmd.com AOZ1960 LED Current Regulation Input Voltage (V) Analog Dimming Linearity 0.8 1.2 1.6 2.0 2.4 Analog Dimming Votlage (V) Page ...
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... Typical Operating Characteristics Startup Waveforms (Vin = 12V) 2ms/div Switching Waveforms (Vin = 7V) 500ns/div Rev. 1.0 August 2010 (Continued) Switching Waveforms (Vin = 12V) EN 5V/div Vout 20V/div IL 500mA/div 500ns/div Switching Waveforms (Vin = 24V) LX 20V/div IL 500mA/div 500ns/div www.aosmd.com AOZ1960 LZ 20V/div IL 500mA/div LX 20V/div IL 500mA/div Page ...
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... DPWM 200μs/div Rev. 1.0 August 2010 (Continued) 50% DPWM DPWM Signal 5V/div LX 20V/div LED Current 20mA/div 90% DPWM DPWM Signal 5V/div LX 20V/div LED Current 20mA/div 200μs/div www.aosmd.com AOZ1960 DPWM Signal 5V/div LX 20V/div LED Current 20mA/div 200μs/div Page ...
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... LIN 10V/div LX 20V/div LED Open Protection OVP Voltage 1V/Div Channel Voltage 10V/Div Output Voltage 20V/Div Fault Voltage 5V/Div 100ms/div www.aosmd.com AOZ1960 Vout 20V/div LIN 10V/div LX 20V/div 1ms/div OVP Voltage 1V/Div Channel Voltage 10V/Div Output Voltage 20V/Div Fault Voltage 5V/Div Page ...
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... AOZ1960 is enabled. Linear Regulator (BIAS) AOZ1960 has an internal 5V linear regulator that powers all the internal circuitry including power MOSFET driver. BIAS is the output of the internal regulator. Connect a 1μF or larger ceramic capacitor between BIAS and ground ...
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... R Input Capacitor The input capacitor is connected to VIN and GND pins of the AOZ1960 to filter and maintain a steady input DC voltage. The voltage rating of input capacitor must be greater than maximum input voltage plus ripple voltage. The RMS current rating should be greater than the inductor ripple current: The input capacitor value should be 22μ ...
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... Loop Compensation AOZ1960 employs constant off time control and does not require slope compensation. The right half plane zero that is often problematic in all most boost converters has no significant effect in the AOZ1960’s frequency response ...
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... During this interval, the output boost diode is reversed (Eq. 11) biased with its anode pulled low to ground. Since the NMOS is internal in the AOZ1960 much of the parasitic inductance is made from the power return to the ground connection of the input capacitors. Based on the duty cycle arrangement, the controller will signal the internal driver to turn-off the NMOS to initiate the fixed off time ...
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... In the AOZ1960 boost regulator circuit, the major power dissipating components are the AOZ1960 and output inductor. The total power dissipation of converter circuit can be measured by difference between the input and output power. ( × × – V total_loss The power dissipation of inductor can be approximately calculated by input current and DCR of inductor. × ...
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... Coplanarity applies to the terminals and all other bottom surface metallization. 6. Drawing shown are for illustration only. Rev. 1.0 August 2010 D A D/2 E/2 TOP VIEW 6 A3 SEATING PLANE SIDE VIEW b bbb BOTTOM VIEW www.aosmd.com AOZ1960 Page ...
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... BSC e 0.020 BSC 0.400 0.500 L 0.012 – 0.200 – L1 – 0.45 REF R 0.018 REF 0.15 aaa 0.10 bbb 0.10 ccc 0.08 ddd www.aosmd.com AOZ1960 3.6 1.8 Nom. Max. 0.035 0.039 0.001 0.002 0.010 0.014 0.087 0.088 0.067 0.070 0.106 0.108 0.016 0.020 0.008 – 0.006 0.004 0.004 0.003 ...
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... 1.55 1.55 12.0 1.75 ±0.05 ±0.05 ±0.3 ±0. Ø100 12.4 18.4 Ø13.0 Min. +2.0 Max. +0.5 -0.0 -0.2 Components Tape Orientation in Pocket www.aosmd.com AOZ1960 Feeding Direction 5.5 12.0 4.0 2.0 0.30 ±0.1 ±0.1 ±0.1 ±0.1 ±0. 10.1 1.5 --- --- --- Min. Min. Leader Tape 500mm min. ...
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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 AOZ1960 Page ...