RT9711 RICHTEK [Richtek Technology Corporation], RT9711 Datasheet
RT9711
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RT9711 Summary of contents
Page 1
... The RT9711 is a low voltage, single N-Channel MOSFET high-side power switch, optimized for self-powered and bus- powered Universal Serial Bus (USB) applications. The RT9711 equipped with a charge pump circuitry to drive the internal MOSFET switch; the switch's low R 80mΩ, meets USB voltage drop requirements; and a flag output is available to indicate fault conditions to the local USB controller ...
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... Note: A low-ESR 150μF aluminum electrolytic or tantalum between V and GND is strongly recommended to meet OUT the 330mV maximum droop requirement in the hub V (see Application Information Section for further details) Functional Pin Description Pin No. Pin Name RT9711 □ B RT9711 □ FLG 2 1 GND 3 4 ...
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... T 10 ON_RISE OUT I Current Ramp (< 0.1A/ms LIM V = 0V, measured prior to OUT I SC_FB thermal shutdown 1mA FLG SINK FLG_OFF FLG RT9711 − 0.3V to 6.5V 0.4W − 65°C to 150°C − 40°C to 125°C − 40°C to 85°C Min Typ -- 0 2 ...
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... RT9711 Parameter FLAG Delay Time (Note 4) Under-Voltage Lockout Under-Voltage Hysteresis Thermal Shutdown Protection Thermal Shutdown Hysteresis Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for stress ratings. 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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... Open EN L μ F/Electrolytic 35 IN OUT 2.5 3 3.5 4 Input Voltage (V) Current Limit vs. Input Voltage 3 SOT- 2.2Ω μ μ 2 F/X7R F/X7R IN OUT 2 1 2.5 3 3.5 4 Input Voltage (V) RT9711 60 80 100 120 4.5 5 5.5 4.5 5 5.5 www.richtek.com 5 ...
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... RT9711 Current Limit vs. Temperature 2.2Ω μ F/X7R OUT 3 2.75 SOP-8 2.5 SOT-23-5 2.25 2 1.75 1.5 -40 - Temperature EN Pin Threshold Voltage vs. Temperature 2.4 SOT-23- 5V LOAD μ F/Electrolytic IN OUT 2 1.6 1.2 0.8 0.4 0 -40 - Temperature Turn-On Rising Time vs. Temperature 700 SOT-23- 5V, R ...
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... Flag Delay Time vs. Temperature SOT-23- -40 - Temperature Load Transient Response V OUT I OUT (1A/Div) Time (1ms/Div) RT9711 Increasing 15mA LOAD = 33uF/Electrolytic OUT 60 80 100 120 (° μ F/Electrolytic OUT 60 80 100 120 4.8V 1.5A SOT-23-5, V ...
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... RT9711 Turn On Response SOT-23- OUT V EN (5V/Div) V OUT (5V/Div) Time (100μs/Div) UVLO at Rising SOT-23- 5V μ F/Electrolytic 30Ω (1V/Div) V OUT (1V/Div) Time (1ms/Div) Flag Response during Short Circuit SOT-23- 5V μ ...
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... Flag Response with Ramped Load SOT-23- 5V μ F/Electrolytic IN OUT V EN (5V/Div) V LAG (5V/Div) V OUT (5V/Div) I OUT (1A/Div) Time (2.5ms/Div) DS9711-04 March 2007 Preliminary = 0V EN RT9711 www.richtek.com 9 ...
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... MOSFET are turned off, reducing the supply current to 0.1μA typical. The maximum guaranteed voltage for a logic low at the EN pin is 0.8V. A minimum guaranteed voltage the EN pin will turn the RT9711 off. Floating the input may cause unpredictable operation. EN should not be allowed to go negative with respect to GND. ...
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... Power Dissipation The device’ s junction temperature depends on several factors such as the load, PCB layout, ambient temperature and package type. The output pin of RT9711 can deliver a current up to 1.5A, respectively over the full operating junction temperature range. However, the maximum output current must be derated at higher ambient temperature to ensure the junction temperature does not exceed 125° ...
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... USB-required fault reporting. The faster trip time of the RT9711 power distribution allow designers to design hubs that can operate through faults. The RT9711 have low on-resistance and internal fault- reporting circuitry that help the designer to meet voltage regulation and fault notification requirements ...
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... USB connectors as possible to lower impedance (mainly inductance) between the port and the capacitor and improve transient load performance. Locate the RT9711 as close as possible to the output port to limit switching noise. Locate the ceramic bypass capacitors as close as possible to the VIN pins of the RT9711. ...
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... RT9711 Outline Dimension Symbol www.richtek.com 14 Preliminary 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 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 RT9711 H M Dimensions In Inches Min Max 0.189 0.197 0.150 0.157 0.053 ...