rt9266b Richtek Technology Corporation, rt9266b Datasheet
rt9266b
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rt9266b Summary of contents
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... Tiny Package, High Efficiency, Step-Up DC/DC Converter General Description The RT9266B is a compact, high efficiency, and low voltage step-up DC/DC converter with an Adaptive Current Mode PWM control loop, includes an error amplifier, ramp generator, comparator, switch pass element and driver in which providing a stable and high efficient operation over a wide range of load currents ...
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... RT9266B Typical Application Circuit V IN Figure 1. RT9266B Typical Application for Portable Instruments V IN Test Circuit www.richtek.com 10uF VDD EN RT9266B LX FB EXT GND L1 3 10uF C2 1uF VDD LX EN RT9266B EXT GND FB Figure 2. RT9266B for Higher Current Applications ...
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... Chip Enable (Active High) EXT Output Pin for Driving External NMOS GND Ground LX Pin for Switching VDD Input Positive Power Pin of RT9266B Feedback Input Pin FB Internal Reference Voltage for the Error Amplifier is 1.25V. Function Block Diagram VDD FB EN DS9266B-09 March 2007 ...
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... RT9266B Absolute Maximum Ratings Supply Voltage ----------------------------------------------------------------------------------------------------- LX Pin Switch Voltage -------------------------------------------------------------------------------------------- Other I/O Pin Voltages ------------------------------------------------------------------------------------------- LX Pin Switch Current -------------------------------------------------------------------------------------------- 2.5A EXT Pin Driver Current -------------------------------------------------------------------------------------------- 200mA Package Thermal Resistance SOT-23-6, θ ------------------------------------------------------------------------------------------------------ 145°C/W JC Operating Junction Temperature ------------------------------------------------------------------------------- 125°C Storage Temperature Range ------------------------------------------------------------------------------------ Electrical Characteristics (V = 1.5V, V set to 3.3V, Load Current = 0, T ...
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... 1. 100 1000 2. 1. 100 1000 2 2.5 3 RT9266B Efficiency vs. Output Current 100 5V 25°C OUT Output Current ( mA) Output Voltage vs. Output Current 5.1 5. 1. 25°C OUT A 4. Output Current (mA) Input Current vs ...
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... RT9266B LX & Output Ripple V IN Time (1us/Div) LX & Output Ripple V = 1.5V Time (1us/Div) LX & Output Ripple V IN Time (1us/Div) www.richtek.com 3.3V @ 10mA OUT = 3.3V @ 10mA OUT = 2V 3.3V @ 10mA OUT LX & Output Ripple 3.3V @ 50mA IN OUT Time (1us/Div) LX & Output Ripple V = 1.5V 3.3V @ 100mA ...
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... LX & Output Ripple V IN Time (1us/Div) LX & Output Ripple V IN Time (1us/Div) DS9266B-09 March 2007 = 3.3V @ 10mA OUT = 3V 3.3V @ 10mA OUT = 1.5V 10mA OUT RT9266B LX & Output Ripple V = 2.5V 3.3V @ 100mA IN OUT Time (1us/Div) LX & Output Ripple 3.3V @ 100mA IN OUT Time (1us/Div) LX & Output Ripple ...
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... RT9266B LX & Output Ripple V Time (1us/Div) LX & Output Ripple V IN Time (1us/Div) LX & Output Ripple V Time (1us/Div) www.richtek.com 10mA IN OUT = 2.5V 10mA OUT = 3V 10mA IN OUT LX & Output Ripple 100mA IN OUT Time (1us/Div) LX & Output Ripple V = 2.5V 100mA ...
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... Time (2.5us/Div) LX & Output Ripple V IN Time (5us/Div) DS9266B-09 March 2007 = 3.5V 10mA OUT = 4V 10mA IN OUT = 4.5V 10mA OUT RT9266B LX & Output Ripple V = 3.5V 100mA IN OUT Time (1us/Div) LX & Output Ripple 100mA IN OUT Time (1us/Div) LX & Output Ripple ...
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... RT9266B Load Transient Respones 3.3V OUT Time (2.5ms/Div) Load Transient Respones 3.3V OUT Time (2.5ms/Div) Load Transient Respones V = 3.5V OUT Time (2.5ms/Div) www.richtek.com 10 = 10mA to 50mA OUT = 10mA to 100mA OUT = 5V 10mA to 100mA OUT Load Transient Respones V = 1.5V 3.3V 10mA to 100mA ...
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... Switching Frequency vs. VDD Pin Voltage 700 600 500 400 300 200 100 VDD Pin Voltage (V) DS9266B-09 March 2007 GND T = 25° RT9266B www.richtek.com 11 ...
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... RT9266B Application Information Output Voltage Setting Referring to application circuits, the output voltage of the switching regulator (V ) can be set with Equation (1). OUT R1 × 1.25V OUT1 R2 Feedback Loop Design Referring to application circuits, The selection of R1 and R2 based on the trade-off between quiescent current consumption and interference immunity is stated below: Follow Equation (1) ...
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... SOT-23-6 Surface Mount Package Richtek Technology Corporation Taipei Office (Marketing) 8F, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek.com RT9266B H L Dimensions In Inches Min Max 0.031 0.051 0.000 0.006 0.055 ...