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TPS22960RSET

TPS22960RSET

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    UQFN8

  • 描述:

    IC PWR SWITCH P-CHAN 1:1 8UQFN

  • 数据手册
  • 价格&库存
TPS22960RSET 数据手册
Sample & Buy Product Folder Support & Community Tools & Software Technical Documents TPS22960 SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 TPS22960 Low-Input Voltage, Dual-Load Switch With Controlled Turnon 1 Features 3 Description • • • The TPS22960 is a small low-rON dual-channel load switch with controlled turnon. The devices contain two P-channel MOSFETs that can operate over an input voltage range of 1.62 V to 5.5 V. Each switch is independently controlled by on/off inputs (ON1 and ON2), which are capable of interfacing directly with low-voltage control signals. In TPS22960 a 85-Ω onchip load resistor is added for quick discharge when the switch is turned off. 1 • • • • • • • Integrated Dual-Load Switch Input Voltage Range: 1.62 V to 5.5 V Low ON-State Resistance – rON = 342 mΩ at VIN = 5.5 V – rON = 435 mΩ at VIN = 3.3 V – rON = 523 mΩ at VIN = 2.5 V – rON = 737 mΩ at VIN = 1.8 V 500-mA Maximum Continuous Switch Current Low Quiescent Current and Shutdown Current Controlled Switch Output Rise Time: 75 μs or 660 μs Integrated Quick Output Discharge Transistor ESD Performance Tested Per JESD 22 – 2000-V Human Body Model (A114-B, Class II) – 1000-V Charged-Device Model (C101) 8-Pin SOT (DCN) Package: 3 mm × 3 mm 8-Pin UQFN (RSE) Package: 1.5 mm × 1.5 mm 2 Applications • • • • The rise time (slew-rate) of the device is internally controlled in order to avoid inrush current, and it can be slowed down if needed using the SR pin: at 3.3 V, TPS22960 features a 75-μs rise time with the SR pin tied to ground and 660-μs with the SR pin tied to high. The TPS22960 is available in a space-saving 8-pin UQFN package and in an 8-pin SOT package. It is characterized for operation over the free-air temperature range of –40°C to 85°C. Device Information(1) PART NUMBER TPS22960 GPS Devices Cell Phones/PDAs MP3 Players Digital Cameras PACKAGE BODY SIZE (NOM) SOT (8) 2.90 mm × 1.63 mm UQFN (8) 1.50 mm × 1.50 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. Simplified Diagram ON1 VIN1 CL RL Load 1 1 µF CL RL Load 2 VOUT1 SR VIN2 VOUT2 1 µF ON2 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. TPS22960 SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 www.ti.com Table of Contents 1 2 3 4 5 6 7 8 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 3 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 3 3 4 4 5 5 6 7 Absolute Maximum Ratings ...................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information .................................................. Electrical Characteristics........................................... Switching Characteristics .......................................... Typical DC Characteristics........................................ Typical Switching Characteristics ............................. Parameter Measurement Information ................ 11 Detailed Description ............................................ 12 8.1 Overview ................................................................. 12 8.2 Functional Block Diagram ....................................... 12 8.3 Feature Description................................................. 13 8.4 Device Functional Modes........................................ 13 9 Application and Implementation ........................ 14 9.1 Application Information............................................ 14 9.2 Typical Application ................................................. 14 10 Power Supply Recommendations ..................... 16 11 Layout................................................................... 16 11.1 Layout Guidelines ................................................. 16 11.2 Layout Example .................................................... 17 12 Device and Documentation Support ................. 19 12.1 12.2 12.3 12.4 Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 19 19 19 19 13 Mechanical, Packaging, and Orderable Information ........................................................... 19 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision C (July 2015) to Revision D • Page Made changes to Application Information ............................................................................................................................. 1 Changes from Revision B (August 2013) to Revision C Page • Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1 • Updated the Thermal Information table to remove 220°C/W and 116°C/W from the junction-to-ambient thermal resistance, and 123°C/W and 60°C/W from the junction-to-case (top) thermal resistance .................................................. 4 • Changed values > 100°C/W in the Thermal Information table to contain only 3 significant figures ..................................... 4 Changes from Revision A (August 2011) to Revision B Page • Clarified text in the Description............................................................................................................................................... 1 • Added TJ to the Absolute Maximum Ratings table................................................................................................................. 3 • Updated Table 2 in Device Functional Modes...................................................................................................................... 13 Changes from Original (April 2009) to Revision A Page • Changed rON values for VINX = 1.8 V (25°C) From: Typ 714, Max 855 To: Typ 737, Max 1100 ........................................... 5 • Changed rON values for VINX = 1.8 V (Full) From: Max 995 To: Max 1300 ........................................................................... 5 • Changed rON values for VINX = 1.62 V (25°C) From: Typ 830, Max 950 To: Typ 848, Max 1300 ......................................... 5 • Changed rON values for VINX = 1.62 V (Full) From: Max 1100 To: Max 1500 ....................................................................... 5 2 Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 TPS22960 www.ti.com SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 5 Pin Configuration and Functions DCN PACKAGE 8-PIN SOT TOP VIEW RSE PACKAGE 8-PIN UQFN TOP VIEW VIN2 VIN1 1 8 VOUT1 ON1 2 7 SR ON2 3 6 GND VIN1 1 ON1 2 SR 3 8 4 7 ON2 6 GND 5 VOUT2 VOUT1 VIN2 5 4 VOUT2 Pin Functions PIN NAME I/O DESCRIPTION SOT UQFN VIN1 1 1 I Switch 1 input; bypass this input with a ceramic capacitor to GND ON1 2 2 I Switch 1 control input, active high. Do not leave floating. ON2 3 7 I Switch 2 control input, active high. Do not leave floating. VIN2 4 8 I Switch 2 input; bypass this input with a ceramic capacitor to GND VOUT2 5 5 O Switch 2 output GND 6 6 — Ground SR 7 3 I Slew rate control pin. SR = GND translates into a 75-μs rise time; SR = high translates into a 660-μs rise time VOUT1 8 4 O Switch 1 output 6 Specifications 6.1 Absolute Maximum Ratings (1) (see ) VIN Input voltage VOUT Output voltage VON Input voltage IMAX Maximum continuous switch current TA Operating free-air temperature TJ Maximum junction temperature Tstg Storage temperature (1) MIN MAX UNIT –0.3 6 V VIN + 0.3 V 6 V –0.3 –40 –65 0.5 A 85 °C 125 °C 150 °C Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 6.2 ESD Ratings VALUE V(ESD) (1) (2) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) 2000 Charged-device model (CDM), per JEDEC specification JESD22C101 (2) 1000 UNIT V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 3 TPS22960 SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 www.ti.com 6.3 Recommended Operating Conditions VIN Input voltage VOUT Output voltage VIH High-level input voltage: ON1, ON2, SR VIL Low-level input voltage: ON1, ON2, SR CIN Input capacitor (1) MIN MAX 1.62 5.5 V VIN V VINx = 3.0 V to 5.5 V 1.5 5.5 VINx = 1.62 V to 3.0 V 1.4 5.5 VINx = 3.0 V to 5.5 V 0.5 VINx = 1.62 V to 3.0 V 0.4 UNIT V V 1 (1) μF See Application Information 6.4 Thermal Information TPS22960 THERMAL METRIC (1) DCN (SOT) RSE (UQFN) 8 PINS 8 PINS UNIT RθJA Junction-to-ambient thermal resistance 254 124 °C/W RθJC(top) Junction-to-case (top) thermal resistance 122 67 °C/W RθJB Junction-to-board thermal resistance 181 31.5 °C/W ψJT Junction-to-top characterization parameter 22 2.9 °C/W ψJB Junction-to-board characterization parameter 178 31.5 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance — — °C/W (1) 4 For more information about traditional and new thermal metrics, see Semiconductor and IC Package Thermal Metrics (SPRA953). Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 TPS22960 www.ti.com SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 6.5 Electrical Characteristics VIN = 1.62 V to 5.5 V, TA = –40°C to 85°C (unless otherwise noted) PARAMETER Quiescent current (each switch) IIN IIN(OFF) OFF-state supply current (each switch) TA MIN TYP (1) VINx = 5.5 V Full 0.64 2 VINx = 3.3 V Full 0.35 1.2 VINx = 2.5 V Full 0.24 0.8 VINx = 1.8 V Full 0.15 0.5 VINx = 5.5 V Full 0.47 3.6 VINx = 3.3 V Full 0.25 1.8 VINx = 2.5 V Full 0.18 1.3 Full 0.11 0.9 25°C 342 400 TEST CONDITIONS IOUTx = 0, VINx = VON VON = GND, VOUTx = Open VINx = 1.8 V VINx = 5.5 V VINx = 3.3 V rON ON-state resistance (each switch) IOUT = –200 mA VINx = 2.5 V VINx = 1.8 V VINx = 1.62 V rPD Output pulldown resistance VIN = 3.3 V, VON = 0, IOUT = 30 mA ION ON-state input leakage current VON = 1.62 V to 5.5 V or GND (1) Full 25°C 435 737 620 mΩ 1100 1300 848 Full 25°C μA 500 720 Full 25°C μA 595 523 Full 25°C UNIT 465 Full 25°C MAX 1300 1500 85 Full 120 Ω 0.25 μA MAX UNIT Typical values are at TA = 25°C. 6.6 Switching Characteristics VIN = 3.3 V, TA = 25°C, RL_CHIP = 85 Ω (unless otherwise noted) PARAMETER TEST CONDITIONS tON Turn-ON time RL = 33 Ω, CL = 0.1 μF tOFF Turn-OFF time RL = 33 Ω, CL = 0.1 μF tr VOUT rise time RL = 33 Ω, CL = 0.1 μF tf VOUT fall time RL = 33 Ω, CL = 0.1 μF (1) SR = VIN MIN TYP (1) 635 SR = GND 67 SR = VIN 4.5 SR = GND 4.2 SR = VIN 660 SR = GND 75 SR = VIN 4.5 SR = GND 4.5 μs μs μs μs Typical values are at the specified VIN = 3.3 V and TA = 25°C Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 5 TPS22960 SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 www.ti.com 6.7 Typical DC Characteristics 1100 900 1000 TA = 85°C 800 TA = 25°C 700 VIN = 1.8 V Resitance (mxW ) 800 Resistance (m W ) 900 700 TA = -40°C 600 500 400 600 VIN = 2.5 V 500 VIN = 3.3 V 400 300 VIN = 5.5 V 200 300 100 200 -50 0 0 1 2 3 VIN (V) 4 5 6 -25 0 25 50 75 100 Temperature (°C) Figure 1. ON Resistance vs Input Voltage Figure 2. ON Resistance vs Temperature 0.7 1 VIN = 3.3 V SR = High SR = High 0.9 0.6 0.8 0.7 0.6 0.4 IIN (µA) IIN (µA) 0.5 IIN 0.3 0.5 0.4 IIN (Off) TA = 85°C 0.3 0.2 0.2 IIN (Leakage) 0.1 TA = 25°C 0.1 0 -50 TA = -40°C 0 -25 0 25 50 75 0 100 1 2 3 4 5 6 VIN (V) Temperature (°C) Figure 3. Quiescent Current vs Temperature Figure 4. Quiescent Current vs Input Voltage 6.0 VIN = 5.5 V 5.5 VIN = 5.0 V 5.0 VIN = 4.5 V 4.5 4.0 VIN = 3.3 V VIN = 3.6 V VOUT (V) 3.5 3.0 VIN = 3.0 V 2.5 VIN = 2.5 V 2.0 VIN = 1.8 V 1.5 1.0 0.5 0.0 -0.5 0.5 1.0 1.5 2.0 2.5 3.0 3.5 VON (V) Figure 5. ON Threshold 6 Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 TPS22960 www.ti.com SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 6.8 Typical Switching Characteristics 1400 160 SR High TA = -40°C 1300 TA = 25°C SR Low TA = -40°C 145 TA = 25°C 1200 TA = 85°C 130 TA = 85°C 1100 115 t R (µs) t R (µs) 1000 900 100 800 85 700 70 600 55 500 400 40 1 2 3 4 5 6 1 2 3 VIN (V) 4 5 6 VIN (V) Figure 6. Rise Time vs Input Voltage Figure 7. Rise Time vs Input Voltage 700 5.0 SR = High or Low SR High 4.5 600 4.0 500 t R (µs) t F (µs) 3.5 3.0 400 300 2.5 200 2.0 100 1.5 0 -50 1.0 1 2 3 4 5 SR Low 6 -25 VIN (V) 0 25 50 75 100 Temperature (°C) Figure 8. Fall Time vs Input Voltage Figure 9. Rise Time vs Temperature 9 1400 SR High 8 1200 7 1000 t OFF (µs) t ON (µs) 6 800 600 5 SR Low 4 SR High 400 3 SR Low 200 2 1 0 1 2 3 4 5 6 1 2 3 4 5 6 VIN (V) VIN (V) Figure 10. On Time vs Input Voltage Figure 11. Off Time vs Input Voltage Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 7 TPS22960 SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 www.ti.com Typical Switching Characteristics (continued) CLoad = 10 µF IOUT = 100 mA V IN = 1.8 V SR = High CLoad = 0.1 µF IOUT = 100 mA V IN = 1.8 V SR = High V ON 500 mV/div V ON 500 mV/div IOUT 20 mA/div IOUT 20 mA/div 1 ms/div 1 ms/div Figure 13. tON Response Figure 12. tON Response CLoad = 0.1 µF IOUT = 100 mA V IN = 5.5 V SR = High CLoad = 10 µF IOUT = 100 mA V IN = 5.5 V SR = High V ON 500 mV/div V ON 500 mV/div IOUT 20 mA/div IOUT 20mA/div 500 µs/div 500 µs/div Figure 14. tON Response Figure 15. tON Response CLoad = 0.1 µF IOUT = 100 mA V IN = 1.8 V SR = High I OUT 20 mA/div IOUT 20 mA/div VON 500 mV/div V ON 500 mV/div 5 µs/div 100 µs/div Figure 16. tOFF Response 8 C Load = 10 µF I OUT = 100 mA V IN = 1.8 V SR = High Figure 17. tOFF Response Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 TPS22960 www.ti.com SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 Typical Switching Characteristics (continued) CLoad = 0.1 µF IOUT = 100 mA V IN = 5.5 V SR = High IOUT 20 mA/div CLoad = 10 µF I OUT = 100 mA V IN = 5.5 V SR = High IOUT 20 mA/div VON 500 mV/div VON 500 mV/div 5 µs/div 200 µs/div Figure 18. tOFF Response Figure 19. tOFF Response CLoad = 0.1 µF IOUT = 100 mA VIN = 1.8 V SR = Low CLoad = 10 µF IOUT = 100 mA VIN = 1.8 V SR = Low VON 500 mV/div V ON 500 mV/div IOUT 20 mA/div I OUT 20 mA/div 500 µs/div 100 µs/div Figure 21. tON Response Figure 20. tON Response CLoad = 0.1 µF IOUT = 100 mA VIN = 5.5 V SR = Low CLoad = 10 µF I OUT = 100 mA V IN = 5.5 V SR = Low VON 500 mV/div VON 500 mV/div IOUT 20 mA/div IOUT 20 mA/div 50 µs/div 500 µs/div Figure 22. tON Response Figure 23. tON Response Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 9 TPS22960 SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 www.ti.com Typical Switching Characteristics (continued) CLoad = 0.1 µF I OUT = 100 mA V IN = 1.8 V SR = Low IOUT 20 mA/div VON 500 mV/div VON 500 mV/div 200 µs/div 5 µs/div Figure 25. tOFF Response Figure 24. tOFF Response CLoad = 0.1 µF I OUT = 100 mA V IN = 5.5 V SR = Low IOUT 20 mA/div CLoad = 10 µF I OUT = 100 mA V IN = 5.5 V SR = Low IOUT 20 mA/div VON 500 mV/div VON 500 mV/div 200 µs/div 5 µs/div Figure 27. tOFF Response Figure 26. tOFF Response 10 CLoad = 10 µF I OUT = 100 mA V IN = 1.8 V SR = Low IOUT 20 mA/div Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 TPS22960 www.ti.com SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 7 Parameter Measurement Information VIN ON + – VOUT (A) OFF CIN =1 µF GND RL CL TPS22960 GND GND TEST CIRCUIT 1.8 V VON VON VON/2 VON/2 tr 0V tON tOFF VOUT/2 VOUT/2 90% VOUT VOH VOUT tf 0V 10% 90% 10% VOL tON/tOFF WAVEFORMS A. trise and tfall of the control signal is 100 ns. Figure 28. Test Circuit and tON/tOFF Waveforms Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 11 TPS22960 SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 www.ti.com 8 Detailed Description 8.1 Overview The TPS22960 is a dual-channel load switch. The two channels can be independently controlled using the ONx pins. Each channel has an 85-Ω quick discharge resistance from VOUTX to GND when disabled. A single control pin (SR) is used to set the slew rate for both channels.. 8.2 Functional Block Diagram VIN1 ON1 SR Control Logic ON2 VOUT1 Output discharge GND Output discharge VOUT2 VIN2 12 Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 TPS22960 www.ti.com SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 8.3 Feature Description This section will discuss the features of the TPS22960 which have been summarized in Table 1. Table 1. Feature Summary (1) DEVICE rON AT 3.3 V (TYP) SLEW RATE AT 3.3 V (TYP) QUICK OUTPUT DISCHARGE (1) MAX OUTPUT CURRENT ENABLE TPS22960 435 mΩ 75 μs with SR = low 660 μs with SR = high Yes 500 mA Active High This feature discharges the output of the switch to ground through an 85-Ω resistor, preventing the output from floating. 8.3.1 Output Slew Rate (SR) Control The slew rate (rise time) of the device is internally controlled in order to avoid inrush current, and it can be slowed down if needed using the SR pin. At 3.3 V, TPS22960 features a 75-μs rise time with the SR pin tied to ground, and a 660-μs rise time with the SR pin tied high. Both channels will have the same slew rate set by the SR pin. 8.3.2 Quick Output Discharge (QOD) Each channel of the TPS22960 includes an independent QOD feature. When the channel is disabled, a discharge resistor is connected between VOUTx and GND. This resistor has a typical value of 85 Ω and prevents the output from floating while the switch is disabled. 8.4 Device Functional Modes Table 2. Configurable Logic Function Table ONx VINx TO VOUTx VOUTx TO GND L OFF ON H ON OFF Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 13 TPS22960 SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 www.ti.com 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information 9.1.1 ON/OFF Control The ON pin controls the state of the switch. Activating ON continuously holds the switch in the on state, as long as there is no fault. ON is active HI and has a low threshold, making it capable of interfacing with low voltage signals. The ON pin is compatible with standard GPIO logic threshold. It can be used with any microcontroller with 1.2-V, 1.8-V, 2.5-V, or 3.3-V GPIOs. 9.1.2 Input Capacitor To limit voltage drop or voltage transients, sufficient capacitance needs to be placed on the input side of the load switch (from VIN to GND). In most cases, a 1-μF ceramic capacitor, CIN, placed close to the pins is usually sufficient. However, when switching heavy capacitive loads, higher values of CIN may be needed to prevent the system supply voltage from dropping. 9.1.3 Output Capacitor The integral body diode in the PMOS switch will allow reverse current flow if VOUT exceeds VIN. A CL greater than CIN can cause VOUT to exceed VIN if the system supply is removed. In the case where the system supply could be removed and reverse current is a concern, a CIN greater than CL is recommended. 9.2 Typical Application ON1 VIN1 CL RL Load 1 1 µF CL RL Load 2 VOUT1 SR VIN2 VOUT2 1 µF ON2 Figure 29. Typical Application Schematic 14 Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 TPS22960 www.ti.com SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 Typical Application (continued) 9.2.1 Design Requirements For this design example, use input parameters in Table 3. Table 3. Design Parameters PARAMETER EXAMPLE VALUE VIN 3.3 V CL 22 µF Maximum acceptable inrush current 200 mA 9.2.2 Detailed Design Procedure 9.2.2.1 Inrush Current When the switch is enabled, the output capacitors must be charged up from 0 V to the set value (in this example, 3.3 V). This charge arrives in the form of inrush current. Inrush current can be calculated using the following equation: Inrush Current = C × dV / dt (1) Where: C = output capacitance dV = output voltage dt = rise time The TPS22960 offers selectable rise time control for VOUT. This feature allows the user to control the inrush current during turnon. Equation 1 can be used to find the required rise time to limit the inrush current to the design requirements 200 mA = 22 µF × (3.3 V × 80%) / dt (2) dt = 290 µs (4) To ensure an inrush current of less than 200 mA, SR must be set high for a rise time greater than 290 µs. The following application curves show the different inrush for each SR setting in this design example. 9.2.3 Application Curves Figure 30. Inrush Current with SR = Low Figure 31. Inrush Current with SR = High Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 15 TPS22960 SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 www.ti.com 10 Power Supply Recommendations The device is designed to operate from an input voltage range of 1.62 V to 5.5 V. The power supply should be well-regulated and placed as close to the device terminals as possible. It must be able to withstand all transient and load current steps. In most situations, using an input capacitance of 1 µF is sufficient to prevent the supply voltage from dipping when the switch is turned on. In cases where the power supply is slow to respond to a large transient current or large load current step, additional bulk capacitance may be required on the input The requirements for larger input capacitance can be mitigated by selecting the slower slew rate +SR=high. This will cause the load switch to turn on more slowly and limit the inrush current. 11 Layout 11.1 Layout Guidelines For best performance, all traces should be as short as possible. To be most effective, the input and output capacitors should be placed close to the device to minimize the effects that parasitic trace inductances may have on normal and short-circuit operation. Using wide traces for VIN, VOUT, and GND will help minimize the parasitic electrical effects along with minimizing the case to ambient thermal impedance. 16 Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 TPS22960 www.ti.com SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 11.2 Layout Example Gnd Via VIN Bypass Capacitor VIN1 VOUT1 To GPIO control ON1 SR To GPIO control ON2 GND VIN2 VOUT2 To GPIO control Gnd Via VIN Bypass Capacitor Gnd Via Figure 32. DCN Package Layout Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 17 TPS22960 SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 www.ti.com Layout Example (continued) VIN Bypass Capacitor Gnd Via VIN Bypass Capacitor VIN1 To GPIO control ON1 To GPIO control SR VIN2 GND VOUT1 To GPIO control ON2 Gnd Via VOUT2 Gnd Via Figure 33. RSE Package Layout 18 Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 TPS22960 www.ti.com SLVS914D – APRIL 2009 – REVISED FEBRUARY 2016 12 Device and Documentation Support 12.1 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 12.2 Trademarks E2E is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. 12.3 Electrostatic Discharge Caution These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. 12.4 Glossary SLYZ022 — TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 13 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. Submit Documentation Feedback Copyright © 2009–2016, Texas Instruments Incorporated Product Folder Links: TPS22960 19 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) (4/5) (6) TPS22960DCNR ACTIVE SOT-23 DCN 8 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 (NFRO, NFRR) TPS22960RSER ACTIVE UQFN RSE 8 3000 RoHS & Green NIPDAUAG Level-1-260C-UNLIM -40 to 85 72 TPS22960RSET ACTIVE UQFN RSE 8 250 RoHS & Green NIPDAUAG Level-1-260C-UNLIM -40 to 85 72 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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