RT9715 RICHTEK [Richtek Technology Corporation], RT9715 Datasheet
RT9715
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RT9715 Summary of contents
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... USB controller. Furthermore, the chip also integrates an embedded delay function to prevent miss-operation from happening due to inrush-current. The RT9715 is an ideal solution for USB power supply and can support flexible applications since it is available in various packages such as SOT-23-5, SOP-8, MSOP-8 and WDFN-8L 3x3 ...
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... Function Block Diagram Bias EN/EN Oscillator www.richtek.com 2 Pull-Up Resistor (10K to 100K) FLG VIN C IN RT9715 1uF VOUT EN/EN GND Ferrite Beads . (see Application Information Section for further details) BUS Pin Name SOP-8 / WDFN-8L MSOP-8 3X3 VOUT 1 1 GND ...
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... Input Quiescent Current Input Shutdown Current RT9715A/B RT9715C/D Switch On Resistance RT9715E/F RT9715G/H RT9715A/B Current RT9715C/D Limit RT9715E/F RT9715G/H RT9715A/B Short RT9715C/D Current RT9715E/F RT9715G/H DS9715-03 April 2011 (Note 1) (Note 4) = 25°C, unless otherwise specified) A Symbol Test Conditions I Switch On OUT I Switch Off, V ...
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... RT9715 Parameter Logic_High Voltage EN/EN Threshold Logic_Low Voltage EN/EN Input Current Output Leakage Current Output Turn-On Rise Time FLG Output Resistance FLG Off Current FLG Delay Time Shutdown Auto-Discharge Resistance Under-Voltage Lockout Under-Voltage Hysteresis Thermal Shutdown Protection Thermal Shutdown Hysteresis Note 1. Stresses beyond those listed under These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied ...
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... SOT-23 -40 -25 - Temperature Quiescent Current vs. Temperature 5V,No Load -40 -25 - Temperature (°C) Shutdown Current vs. Temperature 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 -40 -25 - Temperature (°C) RT9715 (° 110 110 www.richtek.com 5 ...
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... RT9715 Output Voltage vs. Output Current 6.0 5 5.0 4.5 4 3.3V 3.5 IN 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 0.25 0.5 0.75 1 Output Current (A) Current Limit vs. Input Voltage 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 2.7 3.1 3.5 3.9 Input Voltage (V) Short Current vs. Input Voltage 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 2.7 3.1 3.5 3.9 Input Voltage (V) www.richtek.com 6 1.25 1.5 1.75 2 2.25 2.5 4.3 4.7 5.1 5.5 4.3 4.7 5.1 5.5 UVLO Threshold vs. Temperature 2.2 2.0 1.8 Rising 1.6 Falling 1.4 1.2 1.0 -40 -25 - Temperature Current Limit vs. Temperature 2. 2.35 2.30 2.25 2.20 2.15 2.10 2.05 2.00 -40 -25 - Temperature (° ...
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... V IN (2V/Div) V OUT (2V/Div) V OUT (2V/Div (1A/Div) EN (5V/Div) FLG (5V/Div) FLG Delay Time vs. Temperature 9.5 9.0 8.5 8.0 -40 -25 - Temperature Power Off from 0V, No Load Time (25ms/Div) FLG Response 0.5Ω IN LOAD Time (2.5ms/Div) RT9715 110 (°C) IN www.richtek.com 7 ...
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... USB voltage droop requirements. www.richtek.com 8 Fault Flag The RT9715 series provides a FLG signal pin which is an N-Channel open drain MOSFET output. This open drain output goes low when current limit or the die temperature exceeds 120°C approximately. The FLG output is capable , DS(ON) of sinking a 10mA load to typically 200mV above ground ...
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... The junction temperature of the RT9715 series depend on several factors such as the load, PCB layout, ambient temperature and package type. The output pin of RT9715 can deliver the current (RT9715A/B), 1.5A (RT9715C/D), 1.1A (RT9715E/F) and 0.7A (RT9715G/ H) respectively over the full operating junction temperature range ...
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... RT9715 The faster trip time of the RT9715 power distribution allows designers to design hubs that can operate through faults. The RT9715 provides low on-resistance and internal fault- reporting circuitry to meet voltage regulation and fault notification requirements. Because the devices are also power switches, the designer of self-powered hubs has the flexibility to turn off power to output ports ...
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... Locate the output capacitor and ferrite beads as close to the USB connectors as possible to lower impedance (mainly inductance) between the port and the capacitor and improve transient load performance. Locate the RT9715 as close as possible to the output port to limit switching noise. and thermal resistance Single Layer PCB ...
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... RT9715 Outline Dimension Symbol www.richtek.com Dimensions In Millimeters Min Max 0.889 1.295 0.000 0.152 1.397 1.803 0.356 0.559 2.591 2.997 2.692 3.099 0.838 1.041 0.080 0.254 0.300 0.610 SOT-23-5 Surface Mount Package H L Dimensions In Inches ...
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... SOP Plastic Package RT9715 H M Dimensions In Inches Min Max 0.189 0.197 0.150 0.157 0.053 0.069 0.013 0.020 0.047 0.053 0.007 0.010 0.002 ...
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... RT9715 Symbol www.richtek.com Dimensions In Millimeters Min Max 0.810 1.100 0.000 0.150 0.750 0.950 0.220 0.380 2.900 3.100 0.650 4.800 5.000 2.900 3.100 0.400 0.800 8-Lead MSOP Plastic Package L Dimensions In Inches Min Max 0.032 ...
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... W-Type 8L DFN 3x3 Package Richtek Technology Corporation Taipei Office (Marketing) 5F, No. 95, Minchiuan Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)86672399 Fax: (8862)86672377 Email: marketing@richtek.com RT9715 2 1 DETAIL A Pin #1 ID and Tie Bar Mark Options Dimensions In Inches Min Max 0.028 ...