PI5PD2041BTAEX

PI5PD2041B/51B 70mΩ Current-Limited, Power-Distribution Switches ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Features Description x x x x x x x x x x x x The PI5PD2041B/51B is an integrated 70mΩ N-channel MOSFET power switches for self-powered and buspowered Universal Series Bus (USB) applications. The devices are equipped with charge pump circuitry to drive the internal MOSFET switch. The switch’s low RDS(on), 70mΩ meets USB voltage drop requirements. This power-distribution switch is designed to set current limit at 1.0A typically. When the output load exceeds the current-limit threshold or a short-circuit situation is present, the devices limit the output current by switching into a constant-current mode, pulling the over-current (/OC) logic output low. When continuous heavy overloads and short-circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit turns off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures that the switch remains off until valid input voltage is present.. 70mΩ High-Side MOSFET 0.5A Continuous Current Thermal and Short-Circuit Protection Accurate Current Limit (1.0A typ.) Operating Range: 2.7V to 5.5V 0.6ms Typical Rise Time Under-Voltage Lockout Deglitched Fault Report (/OC) 1μA Maximum Standby Supply Current Reverse Current Blocking Ambient Temperature Range: -40°C to 85°C UL Recognized, File Number E341484 Applications x x x x x x Laptop, Motherboard PC USB Bus/Self Powered Hubs TV and Set-top BOX Power switch USB Peripherals Battery-Powered Equipment Hot-Plug Power Supplies Pin Description Pin No. 2 5 Pin Configuration 287  *1'   4 ,1 4 3 2&   (1 1 Pin Type Description GND - Ground. IN I Power Input Voltage. /EN Chip Enable, logic low turns I (PI5PD2041B) on power switch. EN Chip Enable, logic high turns I (PI5PD2051B) on power switch. Over current, open-drain /OC O output, active-low. OUT O Power Output Voltage PI5PD2041B SOT23-5 (Top View) 287  *1'  2&   ,1  (1 PI5PD2051B SOT23-5 (Top View) 2013-07-0009 PT0317-5 1 07/31/13 PI5PD2041B/51B 70mΩ Current-Limited, Power-Distribution Switches ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Functional Block Diagram Note A: Current sense Note B: Active low (/EN) for PI5PD2041B; Active high (EN) for PI5PD2051B Maximum Ratings Storage Temperature .............................................................................. -65oC to +150oC Operating virtual junction temperature range, TJ ............................. -40oC to +125oC Input Voltage range ( VI(IN)(2)) ...................................................................... -0.3V to +6V Output Voltage range ( VO(OUT)(2)) .............................................................. -0.3V to +6V Input Voltage range (VI(/EN), VI(EN)).............................................................. -0.3V to +6V Voltage range (VI(/OC), VI(OC)) ....................................................................... -0.3V to +6V Continuous output current ( IO(OUT))........................................................... Internally limit Power Dissipation ................................................................................. SOT23-5/400mW Electrostatic discharge (ESD) protection.......... 4kV/Human body MIL-STD-883C Electrostatic discharge (ESD) protection............500V/Charge device model(CDM) Note: (1)Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. (2)All voltages are with respect to GND. Recommended Operating Conditions Symbol Description Min Type Max Unit VI(IN) Input Voltage 2.7 - 5.5 V VI(/EN), VI(EN) Input Voltage 0 - 5.5 V Continuous Output Current 0 - 0.5 A -40 - 125 ºC IO(OUT) TJ Operating Virtual Junction Temperature Range 2013-07-0009 PT0317-5 2 07/31/13 PI5PD2041B/51B 70mΩ Current-Limited, Power-Distribution Switches ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Electrical Characteristics Unless otherwise specified, VI(IN) = 5.5V, IO = 0.5A, VI(/EN) = 0V, VI(EN) = 5.5V. Sym Description Test Conditions(1) Power Switch RDS(on) Min Typ Max Unit - 70 135 mΩ Static drain-source on-state resistance, 5V operation and 3.3V operation VI(IN) = 5V or 3.3V, IO = 0.5A, -40°C ≤TJ≤ 125°C Static drain-source on-state resistance, 2.7V operation(2) VI(IN) = 2.7V, IO = 0.5A, -40°C ≤TJ ≤ 125°C VI(IN) = 5.5V CL=1PF, VI(IN) = 2.7V RL=10Ω, TJ VI(IN) = 5.5V =25°C VI(IN) = 2.7V - 75 150 mΩ 0.05 0.05 0.6 0.4 - 1.5 1 0.5 0.5 ms 2.7 V ≤ VI(IN) ≤ 5.5 V 2.7 V ≤ VI(IN) ≤ 5.5 V VI(/EN) = 0 V or 5.5 V CL = 100PF, RL = 10Ω CL = 100PF, RL = 10Ω 2 -0.5 - - 0.8 0.5 3 10 VI(IN) =5V, OUT TJ =25°C connected to GND, -40°C ≤TJ ≤ device enabled into 125°C short-circuit VI(IN)=5V, current ramp ( ≤100 A/s ) on OUT 0.75 1 1.25 0.7 1 1.3 1.1 1.5 2.5 - 0.1 - - 0.2 - - 43 - - 43 - -40°C ≤TJ ≤ 125°C - 1 - TJ =25°C - 0.1 - TJ =25°C 2 - 75 2.5 - V mV IO(/OC) = 5mA VO(/OC) = 5V or 3.3V /OC assertion or de-assertion 4 12 0.4 1 15 V PA ms 135 125 - 10 - °C °C °C tr (2) Rise time, output tf (2) Fall time, output Enable Input /EN or EN VIH High-level input voltage VIL Low-level input voltage II Input current ton(2) Turn on time toff(2) Turn off time Current Limit IOS Short-circuit output current IOC-TRIP Over-current trip threshold V PA ms A A Supply Current ISTB Input supply current at output disable ISS Input supply current at output enable Leakage current Reverse leakage current Under-voltage Lockout Low-level input voltage, IN Hysteresis, IN Over-current /OC Output low voltage, VOL(/OC) Off-state current(2) /OC deglitch(2) Thermal Shutdown(3) Thermal shutdown threshold(2) Recovery from thermal shutdown(2) Hysteresis(2) No load on OUT, VI(/EN)= 5.5V, or VI(EN)=0V No load on OUT, VI(/EN) = 0V, or VI(EN) = 5.5V OUT connected to ground, VI(/EN) = 5.5V, or VI(EN) = 0V VI(OUT)=5.5V, IN= ground(2) - TJ =25°C -40°C ≤TJ ≤ 125°C TA=25°C -40°C ≤TJ ≤ 125°C PA Note: (1) Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account separately. (2) Not tested in production, specified by design. (3) The thermal shutdown only reacts under over current conditions. 2013-07-0009 PT0317-5 3 07/31/13 PI5PD2041B/51B 70mΩ Current-Limited, Power-Distribution Switches ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Typical Performance and Characteristics 1. Turn On Delay and Rise Time PI5PD2041B RL=5Ω, CL=1μF, TA=25ć PI5PD2041B RL=5Ω, CL=1μF, TA=25ć VI(/EN) 5V/Div VI(/EN) 5V/Div VO(OUT) 2V/Div VO(OUT) 2V/Div Time (200μs/Div) Time (200μs/Div) PI5PD2041B RL=5Ω, CL=100μF, TA=25ć PI5PD2041B RL=5Ω, CL=100μF, TA=25ć VI(/EN) 5V/Div VI(/EN) 5V/Div VO(OUT) 2V/Div VO(OUT) 2V/Div Time (200μs/Div) Time (400μs/Div) 2013-07-0009 PT0317-5 4 07/31/13 PI5PD2041B/51B 70mΩ Current-Limited, Power-Distribution Switches ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 2. Over Current /OC Response PI5PD2041B TA=25ć, RL=2Ω, CL=0.1μF 3. Output Short to Ground Then Enable PI5PD2041B TA=25ć VO(/OC) 5V/Div VI(/EN) 5V/Div IO(OUT) 0.5A/Div IO(OUT) 0.5A/Div Time (2ms/Div)  Time (200μs/Div)  4. Inrush Current PI5PD2041B TA=25ć, VI(IN)=5V, RL=10Ω VI(/EN) 5V/Div IO(OUT) 0.5A/Div Time (1ms/Div) 2013-07-0009 PT0317-5 5 07/31/13 PI5PD2041B/51B 70mΩ Current-Limited, Power-Distribution Switches ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 5. Turn On/Off Time vs. Input Voltage Turn Off time RL=5Ω, CL=100μF, TA=25ć 800 800 700 600 Turn Off Time (μs) Turn On Time (μs) Turn On time RL=5Ω, CL=100μF, TA=25ć 600 500 400 200 0 2 3 4 Input Voltage (V) 5 6 2 3 4 Input Voltage (V) 5 6  Rise and Fall Time vs. Input Voltage Rise Time RL=5Ω, CL=1μF, TA=25ć Fall Time RL=5Ω, CL=1μF, TA=25ć 800 400 600 300 Fall Time (μs) Rise Time (μs) 6. 400 400 200 200 100 0 0 2 3 4 Input Voltage (V) 5 2 6 2013-07-0009 3 4 Input Voltage (V) PT0317-5 6 5 6  07/31/13 PI5PD2041B/51B 70mΩ Current-Limited, Power-Distribution Switches ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| 7. Input Supply Current vs. Ambient Temperature 60 Vin=5.5V Vin=5V Vin=3.3V Vin=2.7V 40 20 0 -50 0 50 100 Ambient T emperature(ć) 150 200 160 Vin=5.5V Vin=5V Vin=3.3V Vin=2.7V 120 80 40 0 -50  0 50 100 Ambient T emperature (ć) 150  Static Drain-source On Resistance vs. Ambient Temperature 100 On Resistance (mΩ) 8. Output Disable, TA=25ć OUT Disable Supply Current (nA) OUT Enable Supply Current (μA) Output Enable, TA=25ć 80 60 40 Vin=5V Vin=3.3V Vin=2.7V 20 0 -50 0 50 100 Ambient T emperature(ć) 150 2013-07-0009 PT0317-5 7 07/31/13 PI5PD2041B/51B 70mΩ Current-Limited, Power-Distribution Switches ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Current Limit vs. Ambient Temperature Threshold Trip Current vs. Input Voltage Short-Circuit Output Current vs. Ambient Temperature 1.2 Short Circuit Current (A) 3 Threshold Trip Current (A) 9. 2 1 0 1.0 0.8 0.6 Vin=5.5V Vin=5V Vin=3.3V Vin=2.7V 0.4 0.2 0.0 2 3 4 Input Voltage (V) 5 6 -50 2013-07-0009 0 50 100 Ambient T enperature (ć) PT0317-5 8 150 07/31/13 PI5PD2041B/51B 70mΩ Current-Limited, Power-Distribution Switches ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Application Information The power switch is an N-channel MOSFET with a low RDS(on) 70mΩ resistance. Configured as a high-side switch, the power switch prevents leakage current flow from output to input when chip disabled. The power switch supplies a maximum continuous current up to 0.5A. Power-Supply Considerations PI5PD2041B POWER SUPPLY 2.7V to 5.5V IN LOAD OUT 0.1μF 0.1μF 22μF /OC /EN GND Figure 1 Typical Application Circuit A 0.01μF to 1μF ceramic bypass capacitor between IN and GND, close to the device, is recommended. Placing a high-value electrolytic capacitor on the output pin(s) is recommended when the output load is heavy. This precaution reduces power-supply transients that may cause ringing on the input. Additionally, bypassing the output with a 0.01μF to 1μF ceramic capacitor improves the immunity of the device to short-circuit transients. Enable (/EN or EN) The enable pin is logic enable & disables the power switch, which is compatible with CMOS and TTL logic levels. The supply current is reduced to less than 1μA when a logic high is present on /EN, or when a logic low is present on EN. A logic zero input on /EN, or a logic high input on EN restores the bias to the driver and control circuits and turns the switch on /OC Output The /OC open-drain output is asserted (active low) when an over current or over temperature condition is asserted. The output remains asserted until the over current or over temperature condition is removed. The /OC pin requires a pull-up resistor, this resistor should be larger to reduce energy drain. A 100KΩ pull-up resistor works well for most applications. In the case of an over-current or short-circuit conditions, /OC will be asserted only after response delay time, Td, 14ms have elapsed. If an over temperature shutdown occurs, the /OC is asserted instantaneously. PI5PD2041B V+ Rpull-up IN /OC GND OUT /EN Figure 2 Typical Circuit for the /OC Pin 2013-07-0009 PT0317-5 9 07/31/13 PI5PD2041B/51B 70mΩ Current-Limited, Power-Distribution Switches ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Under-Voltage Lockout (UVLO) A voltage sense circuit monitors the input voltage, an under voltage lockout ensures that the power switch is in the off state at power up. When the input voltage is below approximately 2V, a control signal turns off the power switch. Power Dissipation Calculation The low RDS(on) resistance on the N-channel MOSFET allows the small surface-mount packages to pass large currents. The thermal resistances of these packages are high compared to those of power packages. Begin by determining the RDS(on) of the N-channel MOSFET relative to the input voltage and operating temperature. Using this value, the power dissipation per switch can be calculated by: • PD = RDS(on)× I 2 Multiply this number by the number of switches being used. This step renders the total power dissipation from the N-channel MOSFET. Finally, calculate the junction temperature: • TJ = PD x RθJA + TA Where: • TA= Ambient temperature °C • RθJA = Thermal resistance • PD = Total power dissipation based on number of switches being used. Thermal Protection Thermal protection prevents damage to the IC when heavy-overload or short-circuit faults are present for extended periods of time. The PI5PD2041B/51B implements a thermal protection circuitry to monitor the operating junction temperature of the power distribution switch. In an over current or short-circuit condition cause to the junction temperature rises, when the die temperature rises to approximately 135°C due to over current conditions, the internal thermal protection circuitry turns off the switch, thus preventing the device from damage. Hysteresis is built into the thermal protection circuitry, and after the device has cooled approximately 10 degrees, the switch turns back on. The switch continues to cycle off and on until the fault is removed. The opendrain false reporting output (/OC) is asserted (active low) when an over temperature shutdown or over current occurs. Universal Serial Bus (USB) Application The universal serial bus (USB) interface is a 480Mb/s or 12Mb/s, multiplexed serial bus designed for low-to-medium bandwidth PC peripherals (e.g., keyboards, printers, scanners, and mice). The four-wire USB interface is conceived for dynamic attachdetach (hot plug-unplug) of peripherals. Two lines are provided for differential data, and two lines are provided for 5V power distribution. USB data is a 3.3V level signal, but power is distributed at 5V to allow for voltage drops in cases where power is distributed through more than one hub across long cables. Each function must provide its own regulated 3.3V from the 5V input or its own internal power supply. The USB specification defines the following five classes of devices, each differentiated by power-consumption requirements: • Hosts/self-powered hubs (SPH) • Bus-powered hubs (BPH) • Low-power, bus-powered functions • High-power, bus-powered functions • Self-powered functions SPHs and BPHs distribute data and power to downstream functions. The PI5PD2041B/51B has higher current capability than required by one USB port; so, it can be used on the host side and supplies power to multiple downstream ports or functions. Host/Self-Powered and Bus-Powered Hubs Hosts and SPHs have a local power supply that powers the embedded functions and the downstream ports (see Figure 3). This power supply must provide from 5.25V to 4.75V to the board side of the downstream connection under full-load and no-load conditions. Hosts and SPHs are required to have current-limit protection and must report over current conditions to the USB controller. Typical SPHs are desktop PCs, monitors, printers, and stand-alone hubs. 2013-07-0009 PT0317-5 10 07/31/13 PI5PD2041B/51B 70mΩ Current-Limited, Power-Distribution Switches ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| POWER SUPPLY 3.3V 5V Downstream USB Ports PI5PD2041B D+ D- 0.1μF USB Controller Vbus OUT IN 0.1μF 120μF GND /OC /EN GND Figure 3 Typical One-Port USB Host/Self-Powered Hub BPHs obtain all power from upstream ports and often contain an embedded function. The hubs are required to power up with less than one unit load. The BPH usually has one embedded function, and power is always available to the controller of the hub. If the embedded function and hub require more than 100mA on power up, the power to the embedded function may need to be kept off until enumeration is completed. This can be accomplished by removing power or by shutting off the clock to the embedded function. Power switching the embedded function is not necessary if the aggregate power draw for the function and controller is less than one unit load. The total current drawn by the bus-powered device is the sum of the current to the controller, the embedded function, and the downstream ports, and it is limited to 500mA from an upstream port. 2013-07-0009 PT0317-5 11 07/31/13 PI5PD2041B/51B 70mΩ Current-Limited, Power-Distribution Switches ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Mechanical Information TAE(Lead free and Green SOT23-5) Ordering Information Part Number Package Code Package PI5PD2041BTAE TA Lead free and Green 5-Pin SOT23 PI5PD2051BTAE TA Lead free and Green 5-Pin SOT23 Notes: z E = Pb-free and Green z Adding X Suffix= Tape/Reel Function comparison table Part Number Enable Recommended maximum continuous load current Typical short circuit current limit at 25ºC PI5PD2041B PI5PD2051B Active Low Active High 0.5A 1A Number of switch Single Single Pericom Semiconductor Corporation y 1-800-435-2336 y www.pericom.com Pericom reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to supply the best possible product. Pericom does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom product. The company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom. 2013-07-0009 PT0317-5 12 07/31/13