TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com Current-Limited, Power-Distribution Switches Check for Samples: TPS20xxC FEATURES DESCRIPTION 1 The TPS20xxC power-distribution switch family is intended for applications such as USB where heavy capacitive loads and short-circuits are likely to be encountered. This family offers multiple devices with fixed current-limit thresholds for applications between 0.5 A and 2 A. Single Power Switch Family Pin for Pin with Existing TI Switch Portfolio Rated currents of 0.5 A, 1 A, 1.5 A, 2 A ±20% Accurate, Fixed, Constant Current Limit Fast Over-Current Response – 2 µs Deglitched Fault Reporting Output Discharge When Disabled Reverse Current Blocking Built-in Softstart Ambient Temperature Range: –40°C to 85°C The TPS20xxC family limits the output current to a safe level by operating in a constant-current mode when the output load exceeds the current-limit threshold. This provides a predictable fault current under all conditions. The fast overload response time eases the burden on the main 5 V supply to provide regulated power when the output is shorted. The power-switch rise and fall times are controlled to minimize current surges during turn-on and turn-off. APPLICATIONS • • • • USB Ports/Hubs, Laptops, Desktops High-Definition Digital TVs Set Top Boxes Short-Circuit Protection DGN DBV (Top View) (Top View) GND IN IN EN or EN 1 2 3 4 PAD • • • • • • • • • • 23 8 7 6 5 OUT OUT OUT FLT OUT 1 5 IN GND FLT 2 3 4 EN or EN TYPICAL APPLICATION IN VOUT OUT 0.1 mF VIN RFLT 10 kW Fault Signal 150 mF FLT EN or EN Control Signal GND Pad* * DGN only Figure 1. Typical Application Table 1. DEVICES (1) MAXIMUM OPERATING CURRENT (1) STATUS DEVICES MSOP-8 (PowerPad) ™ SOT23-5 0.5 TPS2051C - Preview 1 TPS2065C Active Preview 1.5 TPS2069C Active - 2 TPS2000C / 1C Active - For more details, see the DEVICE INFORMATION table. 1 2 3 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PowerPAD is a trademark of Texas Instruments. is a trademark of ~ Texas Instruments. UNLESS OTHERWISE NOTED this document contains PRODUCTION DATA information current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2011, Texas Instruments Incorporated TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. DEVICE INFORMATION (1) (1) (2) MAXIMUM OPERATING CURRENT OUTPUT DISCHARGE ENABLE BASE PART NUMBER 0.5 Y High 1 Y High 1.5 Y 2 2 PACKAGED DEVICE (2) MARKING MSOP-8 (DGN) PowerPAD™ SOT23-5 (DBV) TPS2051C – √ VBYQ TPS2065C √ √ VCAQ High TPS2069C √ – VBUQ Y Low TPS2000C √ – BCMS Y High TPS2001C √ – VBWQ For the most current packaging and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. "-" indicates the device is not available in this package. ABSOLUTE MAXIMUM RATINGS (1) (2) VALUE Voltage range on IN, OUT, EN or EN, FLT (3) MAX –0.3 6 V –6 6 V Voltage range from IN to OUT Maximum junction temperature, TJ Electrostatic Discharge Internally Limited HBM 2 kV CDM 500 V IEC 61000-4-2, Contact / Air (1) (2) (3) (4) UNIT MIN (4) 8 15 kV Absolute maximum ratings apply over recommended junction temperature range. Voltages are with respect to GND unless otherwise noted. See the Input and Output Capacitance section. VOUT was surged on a pcb with input and output bypassing per Figure 1 (except input capacitor was 22 µF) with no device failures. THERMAL INFORMATION THERMAL METRIC (1) (See DEVICE INFORMATION table.) 0.5 A or 1 A Rated 1.5 A or 2 A Rated 0.5 A or 1 A Rated 1.5 A or 2 A Rated DBV DBV DGN DGN 5 PINS 5 PINS 8 PINS 8 PINS θJA Junction-to-ambient thermal resistance 224.9 220.4 72.1 67.1 θJCtop Junction-to-case (top) thermal resistance 95.2 89.7 87.3 80.8 θJB Junction-to-board thermal resistance 51.4 46.9 42.2 37.2 ψJT Junction-to-top characterization parameter 6.6 5.2 7.3 5.6 ψJB Junction-to-board characterization parameter 50.3 46.2 42.0 36.9 θJCbot Junction-to-case (bottom) thermal resistance N/A N/A 39.2 32.1 θJACustom See the Power DIssipation and Junction Temperature section 139.3 134.9 66.5 61.3 (1) 2 UNITS °C/W For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. Copyright © 2011, Texas Instruments Incorporated TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com RECOMMENDED OPERATING CONDITIONS MIN VIN Input voltage, IN VEN Input voltage, EN or EN NOM Continuous output current, OUT V 0 5.5 V 0.5 TPS2065C 1 TPS2069C 1.5 TPS2000C/01C TJ Operating junction temperature IFLT Sink current into FLT UNIT 5.5 TPS2051C IOUT MAX 4.5 A 2 –40 125 °C 0 5 mA ELECTRICAL CHARACTERISTICS: TJ = TA = 25°C (1) Unless otherwise noted:, VIN = 5 V, VEN = VIN or VEN = GND, IOUT = 0 A. See the DEVICE INFORMATION table for the rated current of each part number. Parametrics over a wider operational range are shown in the second ELECTRICAL CHARACTERISTICS table. PARAMETER TEST CONDITIONS (1) MIN TYP MAX UNIT POWER SWITCH 0.5 A rated output, 25°C DBV 97 110 mΩ 0.5 A rated output, –40°C ≤ (TJ , TA) ≤ 85°C DBV 96 130 mΩ DBV 96 110 DGN 86 100 1 A rated output, 25°C RDS(ON) Input – output resistance 1 A rated output, –40°C ≤ (TJ , TA) ≤ 85°C DBV 96 130 DGN 86 120 mΩ mΩ 1.5 A rated output, 25°C DGN 69 84 mΩ 1.5 A rated output, –40°C ≤ (TJ , TA) ≤ 85°C DGN 69 98 mΩ 2 A rated output, 25°C DGN 72 84 mΩ 2 A rated output, –40°C ≤ (TJ , TA) ≤ 85°C DGN 72 98 mΩ 1.01 CURRENT LIMIT IOS (2) Current-limit, See Figure 7 0.5A rated output 0.67 0.85 1 A rated output 1.3 1.55 1.8 1.5 A rated output 1.7 2.15 2.5 2.35 2.9 3.4 0.01 1 2 A rated output A SUPPLY CURRENT ISD Supply current, switch disabled ISE Supply current, switch enabled IREV Reverse leakage current –40°C ≤ (TJ , TA) ≤ 85°C, VIN = 5.5 V 2 60 –40°C ≤ (TJ , TA) ≤ 85°C, VIN = 5.5 V 70 85 VOUT = 5 V, VIN = 0 V, measure IVOUT 0.1 –40°C ≤ (TJ , TA) ≤ 85°C, VOUT = 5 V, VIN = 0 V, measure IVOUT µA µA 1 5 µA OUTPUT DISCHARGE RPD (1) (2) (3) Output pull-down resistance (3) VIN = VOUT = 5 V, disabled 400 470 600 Ω Pulsed testing techniques maintain junction temperature approximately equal to ambient temperature See CURRENT LIMIT section for explanation of this parameter. These parameters are provided for reference only, and do not constitute part of TI's published device specifications for purposes of TI's product warranty. Copyright © 2011, Texas Instruments Incorporated 3 TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com ELECTRICAL CHARACTERISTICS: –40°C ≤ TJ ≤ 125°C Unless otherwise noted:4.5 V ≤ VIN ≤ 5.5 V, VEN = VIN or VEN = GND, IOUT = 0 A, typical values are at 5 V and 25°C. See the DEVICE INFORMATION table for the rated current of each part number. TEST CONDITIONS (1) PARAMETER MIN TYP MAX UNIT DBV 97 154 mΩ DBV 96 154 DGN 86 140 1.5 A rated output DGN 69 112 mΩ 2 A rated output DGN 72 112 mΩ 1 1.45 2 0.07 0.13 0.20 V –1 0 1 µA 0.5A / 1A Rated 1 1.4 1.8 1.5A / 2A Rated 1.2 1.7 2.2 0.5A and 1A Rated 1.3 1.65 2 1.5A / 2A Rated 1.7 2.1 2.5 0.5A / 1A Rated 0.4 0.55 0.7 1.5A / 2A Rated 0.5 0.7 1.0 0.5A / 1A Rated 0.25 0.35 0.45 1.5A / 2A Rated 0.3 0.43 0.55 0.65 0.85 1.05 POWER SWITCH 0.5 A rated output RDS(ON) Input – output resistance 1 A rated output mΩ ENABLE INPUT (EN or EN) Threshold Input rising Hysteresis Leakage current tON Turnon time tOFF Turnoff time (VEN or VEN) = 0 V or 5.5 V VIN = 5 V, CL = 1 µF, RL = 100 Ω, EN ↑ or EN ↓. See Figure 2, Figure 4, and Figure 5 VIN = 5 V, CL = 1 µF, RL = 100 Ω, EN ↓ or EN ↑. See Figure 2, Figure 4, and Figure 5 V ms ms CL = 1 µF, RL = 100 Ω, VIN = 5 V. See Figure 3 tR Rise time, output ms CL = 1 µF, RL = 100 Ω, VIN = 5 V. See Figure 3 tF Fall time, output ms CURRENT LIMIT 0.5 A rated output IOS (2) Current-limit, See Figure 8 Short-circuit response time (3) tIOS 1 A rated output 1.2 1.55 1.9 1.5 A rated output 1.6 2.15 2.7 2 A rated output 2.3 2.9 3.6 VIN = 5 V (see Figure 7), One-half full load → RSHORT = 50 mΩ, Measure from application to when current falls below 120% of final value 2 A µs SUPPLY CURRENT ISD Supply current, switch disabled 0.01 10 µA ISE Supply current, switch enabled 65 90 µA IREV Reverse leakage current 0.2 20 µA 3.75 4 V VOUT = 5.5 V, VIN = 0 V, Measure IVOUT UNDERVOLTAGE LOCKOUT VUVLO (1) (2) (3) 4 Rising threshold VIN↑ Hysteresis (3) VIN↓ 3.5 0.14 V Pulsed testing techniques maintain junction temperature approximately equal to ambient temperature See CURRENT LIMIT section for explanation of this parameter. These parameters are provided for reference only, and do not constitute part of TI's published device specifications for purposes of TI's product warranty. Copyright © 2011, Texas Instruments Incorporated TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com ELECTRICAL CHARACTERISTICS: –40°C ≤ TJ ≤ 125°C (continued) Unless otherwise noted:4.5 V ≤ VIN ≤ 5.5 V, VEN = VIN or VEN = GND, IOUT = 0 A, typical values are at 5 V and 25°C. See the DEVICE INFORMATION table for the rated current of each part number. TEST CONDITIONS (1) PARAMETER MIN TYP MAX UNIT FLT tFLT Output low voltage, FLT IFLT = 1 mA Off-state leakage VFLT = 5.5 V FLT deglitch FLT assertion/deassertion deglitch 0.2 V 1 µA ms 6 9 12 VIN = 4 V, VOUT = 5.0 V, disabled 350 560 1200 VIN = 5 V, VOUT = 5.0 V, disabled 300 470 800 OUTPUT DISCHARGE RPD Output pull-down resistance Ω THERMAL SHUTDOWN Rising threshold (TJ) Hysteresis (4) In current limit 135 Not in current limit 155 (4) °C 20 These parameters are provided for reference only, and do not constitute part of TI's published device specifications for purposes of TI's product warranty. OUT RL VOUT CL Figure 2. Output Rise / Fall Test Load VEN 50% tON tR 90% 10% Figure 3. Power-On and Off Timing V/EN 50% 50% 50% tOFF tOFF tON 90% VOUT tF 90% VOUT 10% 10% Figure 4. Enable Timing, Active High Enable Figure 5. Enable Timing, Active Low Enable 120% x IOS IOUT IOS 0A tIOS Figure 6. Output Short Circuit Parameters VIN Decreasing Load Resistance VOUT Slope = -RDS(ON) 0V 0A IOUT IOS Figure 7. Output Characteristic Showing Current Limit Copyright © 2011, Texas Instruments Incorporated 5 TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com FUNCTIONAL BLOCK DIAGRAM Current Sense IN Charge Pump EN or EN CS OUT Current Limit (Disabled+ UVLO) Driver UVLO GND FLT OTSD Thermal Sense 9-ms Deglitch DEVICE INFORMATION PIN FUNCTIONS NAME PINS DESCRIPTION 8-PIN PACKAGE EN or EN GND IN 4 Enable input, logic high turns on power switch 1 Ground connection 2, 3 FLT 5 OUT 6, 7, 8 PowerPAD (DGN ONLY) PAD Input voltage and power-switch drain; connect a 0.1 µF or greater ceramic capacitor from IN to GND close to the IC Active-low open-drain output, asserted during over-current, or over-temperature conditions Power-switch output, connect to load Internally connected to GND. Connect PAD to GND plane as a heatsink for the best thermal performance. PAD may be left floating if desired. See POWER DISSIPATION AND JUNCTION TEMPERATURE section for guidance. 5-PIN PACKAGE EN or EN 4 Enable input, logic high turns on power switch GND 2 Ground connection IN 5 Input voltage and power-switch drain; connect a 0.1 µF or greater ceramic capacitor from IN to GND close to the IC FLT 3 Active-low open-drain output, asserted during over-current, or over-temperature conditions OUT 1 Power-switch output, connect to load. 6 Copyright © 2011, Texas Instruments Incorporated TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com TYPICAL CHARACTERISTICS IOUT IN IN1 680mF3 Enable Signal OUT OUT1 OUT1 VOUT 150µF VIN VIN 2 EN or EN Pad1 RLOAD 3.01kW2 FLT GND (1) Not every package has all pins (2) These parts are for test purposes (3) Helps with output shorting tests when external supply is used. Fault Signal Figure 8. Test Circuit for System Operation in Typical Characteristics Section Amplitude (V) 6 FLT 9 1.75 8 1.50 7 1.25 6 5 1.00 4 0.75 3 0.50 EN 2 1 0.25 Output Voltage 0 −1 −2m 0 2m 4m 6m VIN = 5 V, COUT = 150 µF, RLOAD = 100 Ω, TPS2065C Output Current 1.00 4 0.75 EN 3 0.25 1 0.00 −0.25 0 −0.25 −1 −2m 7 6 1.25 6 Amplitude (V) 1.00 4 0.75 3 0.50 EN Output Voltage 1 0 −1 −2m 0 2m 4m 4m 6m −0.50 8m 10m 12m 14m 16m 18m 20m Time (s) VIN = 5 V, COUT = 150 µF, RLOAD = 50 mΩ, TPS2065C G002 Output Current 5 EN 2.00 1.80 1.50 1.20 1.00 4 FLT 0.75 3 0.50 2 0.25 0.00 1 0.00 −0.25 0 0.25 −0.50 6m 8m 10m 12m 14m 16m 18m Time (s) Figure 11. TPS2065C Enable into Output Short Copyright © 2011, Texas Instruments Incorporated Amplitude (V) 1.50 Current (A) 7 2 2m Figure 10. TPS2065C Output Rise / Fall 100Ω 8 FLT 0 G001 9 Output Current 0.50 0.00 1.75 5 1.25 2 −0.50 8m 10m 12m 14m 16m 18m 20m Time (s) VIN = 5 V, COUT = 150 µF, RLOAD = 0 Ω, TPS2065C FLT 5 2.00 8 1.75 1.50 Output Voltage Figure 9. TPS2065C Output Rise / Fall 5Ω 9 2.00 Current (A) Output Current 7 2.00 −1 −2.5m G003 Output Voltage 2.5m 7.5m Current (A) VIN = 5 V, COUT = 150 µF, RLOAD = 5 Ω, TPS2065C Amplitude (V) 8 Current (A) 9 −0.25 12.5m Time (s) 17.5m −0.50 22.5m25m G004 Figure 12. TPS2065C Pulsed Short Applied 7 TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com 4u 6 VIN = 5 V, COUT = 0 µF, RLOAD = 50 mΩ, TPS2065C 15 3 VOUT 2 5 0 0 −1 −1u 0 0.5 VOUT 0 0 100u 200u 300u Time (s) 400u 500u 0.0 5 −1.0 600u 0.50 FLT 2 5 1.00 EN, VIN 3 0.75 0.50 0.25 Output Current 0.00 −0.25 2m 3m 4m −0.50 5m G008 1 0.00 0 −0.25 30m VIN = 5 V, COUT = 150 µF, RLOAD = 2.5 Ω, TPS2001C Output Current 7 0.25 Output Current FLT 2.8 2.0 1.6 1.2 3 0.8 EN −1 −2m G009 3.2 2.4 5 1 −0.50 40m Figure 17. TPS2065C Power Down - Enabled 8 9 Amplitude (V) 1.25 20m 0.75 3 1.75 6 Output Voltage −1 −40m −30m −20m −10m 0 10m Time (s) 1.25 1.00 −1 −5m −4m −3m −2m −1m 0 1m Time (s) 2.00 1.50 2 1.50 Figure 16. TPS2065C Power Up - Enabled 7 FLT 1.75 0 G007 VIN = 5 V, COUT = 150 µF, RLOAD = 7.5Ω, TPS2065C 4 2.00 EN, VIN 4 1 Current (A) Amplitude (V) 8 −5 G006 Output Voltage 6 Figure 15. NEW FIG 9 4u VIN = 5 V, COUT = 150 µF, RLOAD = 7.5Ω, TPS2065C 7 −0.5 −1 −100u 3u Output Voltage 0 2m 4m 6m Current (A) 1 8 Amplitude (V) IOUT 9 2.0 1.0 2 Time (s) 2u Current (A) 2.5 1.5 3 1u Figure 14. TPS2065C Pulsed 1.45-A Load Output Current (A) Output Voltage (V) 4 10 1 G005 VIN = 5 V, COUT = 0 µF, RLOAD = 50 mΩ, TPS2065C 5 20 IOUT Output Current (A) 4 Figure 13. TPS2065C Short Applied 6 30 25 5 Output Voltage (V) 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Current (A) Voltage (V) TYPICAL CHARACTERISTICS (continued) 10 VIN = 5 V, COUT = 0 µF, TPS2065C 9 8 Input Voltage 7 6 5 4 3 Output Voltage 2 1 0 Output Current −1 −2 −3 −1u 0 1u 2u 3u Time (s) 0.4 0.0 −0.4 −0.8 8m 10m 12m 14m 16m 18m Time (s) G010 Figure 18. TPS2001C Turn ON into 2.5Ω Copyright © 2011, Texas Instruments Incorporated TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) 5 EN FLT 8 2.8 7 2.4 6 2.0 1.6 3 1.2 2 Output Voltage 0.8 1 0.4 1 0 0.0 0 0 2m 4m −0.4 6m 8m 10m 12m 14m 16m 18m Time (s) Output Current 2 Output Current Output Voltage 6 FLT 5 0.0 −0.4 2.5m 5m 7.5m 10m 12.5m 15m 17.5m 20m 22.5m Time (s) 1.4 9 1.2 8 1.0 7 0.8 6 1.0 5 0.8 4 0.6 0.6 0.4 3 0.2 2 0.0 EN 0 −1 −2m 0 2m 4m EN 2 1 −0.4 0 −1 −2m Output Voltage Amplitude (V) 7 Output Current 1.4 0.8 0.6 3 0.4 0.2 2 FLT 0.0 1 Output Voltage −0.2 0 −1 −2.5m 0 0 2m 4m 6m 0.4 0.2 0.0 −0.4 8m 10m 12m 14m 16m 18m Time (s) −0.6 2.5m 5m 7.5m 10m 12.5m 15m 17.5m 20m 22.5m Time (s) Figure 23. TPS2051C Pulsed Output Short VIN = 5 V, COUT = 150 µF, RLOAD = 3.3 Ω, TPS2069C G014 6 1.5 EN Output Current 4 1.0 0.5 2 Output Voltage 0 −2 −4m −2m G015 2.5 2.0 8 −0.4 Copyright © 2011, Texas Instruments Incorporated FLT 10 1.0 5 EN 12 1.2 6 4 1.4 Figure 22. TPS2051C Enable into Short Amplitude (V) VIN = 5 V, COUT = 150 µF, RLOAD = 50mΩ, TPS2051C 1.6 −0.2 G013 Current (A) 8 G012 1.2 Output Current 3 −0.2 −0.6 6m 8m 10m 12m 14m 16m 18m Time (s) VIN = 5 V, COUT = 150 µF, RLOAD = 50 mΩ, TPS2051C Figure 21. TPS2051C Turn ON into 10Ω 9 0.4 Figure 20. TPS2001C Pulsed Output Short 4 1 1.2 0.8 FLT G011 Amplitude (V) Amplitude (V) 7 VIN = 5 V, COUT = 150 µF, RLOAD = 10 Ω, TPS2051C 2.8 1.6 Output Voltage 3 −1 −2.5m 0 Current (A) 8 3.2 2.0 4 Figure 19. TPS2001C Enable into Short 9 3.6 2.4 EN 5 4 −1 −2m VIN = 5 V, COUT = 150 µF, RLOAD = 50mΩ, TPS2001C Current (A) Amplitude (V) 6 9 3.2 Current (A) Output Current 7 3.6 0 2m 4m FLT Current (A) VIN = 5 V, COUT = 150 µF, RLOAD = 50 mΩ, TPS2001C Amplitude (V) 8 Current (A) 9 0.0 −0.5 −1.0 6m 8m 10m 12m 14m 16m Time (s) G016 Figure 24. TPS2069CDGN Turn ON into 10Ω 9 TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) Output Current EN Amplitude (V) 6 10 2.5 8 2.0 6 2.0 4 1.5 1.5 4 2 FLT 0 −2 Output Voltage −4 −2m 0 2m 4m 6m 1.0 0 0.0 −2 0.5 0.0 −4 −12.5m 14 All Versions, 5 V IOUT sinking (mA) tFLT (ms) 9.0 8.9 −20 0 20 40 60 80 100 Junction Temperature (°C) 3.5 2-A Rated 120 VIN = 5 V G018 85°C 25°C 10 8 −40°C 6 125°C 4 0 0.0 140 7 VIN = 5 V 6 1.5 2.0 2.5 3.0 3.5 Output Voltage (V) 4.0 4.5 5.0 5.5 G020 All Unit Types, 5 V 5 IREV (µA) 2.0 1.0 Figure 28. Output Discharge Current vs Output Voltage 1.5-A Rated 2.5 0.5 G019 3.0 IOS (A) −0.5 12.5m 7.5m 2 Figure 27. Deglitch Period (tFLT) vs Temperature 1-A Rated 1.5 0.5-A Rated 4 3 2 1 1.0 0 −20 0 20 40 60 80 100 Junction Temperature (°C) 120 140 G021 Figure 29. Short Circuit Current (IOS) vs Temperature 10 −2.5m 2.5m Time (s) 12 9.1 0.5 −40 −7.5m Figure 26. TPS2069CDGN Pulsed Output Short 9.2 8.8 −40 FLT G017 Figure 25. TPS2069CDGN Enable into Short 9.3 1.0 Output Current Output Voltage −0.5 8m 10m 12m 14m 16m 18m Time (s) 2.5 EN 2 0.5 3.0 VIN = 5 V, COUT = 150 µF, RLOAD = 50 mΩ, TPS2069C Current (A) 8 3.0 Amplitude (V) VIN = 5 V, COUT = 150 µF, RLOAD = 50 mΩ, TPS2069C Current (A) 10 −1 −40 −20 0 20 40 60 80 100 Junction Temperature (°C) 120 140 G022 Figure 30. Reverse Leakage Current (IREV) vs Temperature Copyright © 2011, Texas Instruments Incorporated TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) 1.0 Input Voltage = 5.5 V 0.8 0.8 0.6 0.6 ISD (µA) ISD (µA) 1.0 0.4 0.2 0.0 0.0 −20 0 20 40 60 80 100 Junction Temperature (°C) 120 80 85°C G024 70 65 60 55 50 −40 5.50 −20 0 G025 20 40 60 80 100 Junction Temperature (°C) 120 140 G026 Figure 34. Enabled Supply Current (ISE) vs Temperature 125°C COUT = 1 µF, RLOAD = 100 Ω 0.450 0.425 tf (ms) 65 60 55 0.400 1.5-A and 2-A Rated, VIN = 4.5 V 1.5-A and 2-A Rated, VIN = 5 V 0.375 1.5-A and 2-A Rated, VIN = 5.5 V 50 45 40 4.00 5.50 All Unit Types, VIN = 5.5 V 0.475 75 5.25 75 ISE (µA) IREV (µA) 4.50 4.75 5.00 Input Voltage (V) Figure 32. Disabled Supply Current (ISD) vs Input Voltage 80 ISE (µA) −40°C and 25°C 4.25 G023 Figure 33. Reverse Leakage Current (IREV) vs Output Voltage 70 85°C −0.2 4.00 140 Figure 31. Disabled Supply Current (ISD) vs Temperature 6.0 All unit types, VIN = 0 V 5.5 5.0 4.5 125°C 4.0 3.5 3.0 2.5 2.0 85°C 1.5 25°C −40°C 1.0 0.5 0.0 −0.5 4.25 4.50 4.75 5.00 5.25 4.00 Output Voltage (V) 125°C 0.4 0.2 −0.2 −40 All Unit Types −40°C 4.25 0.350 25°C 4.50 4.75 5.00 Input Voltage (V) 5.25 5.50 G027 Figure 35. Enabled Supply Current (ISE) vs Input Voltage Copyright © 2011, Texas Instruments Incorporated 0.325 −40 0.5-A and 1-A Rated, VIN = 5 V −20 0 20 40 60 80 100 Junction Temperature (°C) 120 140 G028 Figure 36. Output Fall Time (tF) vs Temperature 11 TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) 0.85 COUT = 1 µF, RLOAD = 100 Ω 0.80 140 120 0.70 0.65 0.5 A, 1 A, 5 V 100 90 80 70 1.5 A, 2 A, 5 V 1.5-A, 2-A Rated 60 1.5 A, 2 A, 4.5 V 0.55 0.50 −40 0.5-A, 1-A Rated 110 RDSON (mΩ) tr (ms) 0.75 0.60 VIN = 5 V 130 1.5 A, 2 A, 5.5 V 50 −20 0 20 40 60 80 100 Junction Temperature (°C) 120 40 −40 140 Figure 37. Output Rise Time (tR) vs Temperature Recovery Time (µs) 100 −20 G029 0 20 40 60 80 100 Junction Temperature (°C) 120 140 G030 Figure 38. Input-Output Resistance (RDS(ON)) vs Temperature VIN = 5 V, CIN = 730 µF, TPS2065C, IEND = 1.68 A IOS 10 1 0 5 10 15 IPK (Shorted) (A) 20 25 G031 Figure 39. Recovery Vs Current Peak 12 Copyright © 2011, Texas Instruments Incorporated TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com DETAILED DESCRIPTION The TPS20xxC are current-limited, power-distribution switches providing between 0.5 A and 2 A of continuous load current in 5 V circuits. These parts use N-channel MOSFETs for low resistance, maintaining voltage regulation to the load. They are designed for applications where short circuits or heavy capacitive loads will be encountered. Device features include enable, reverse blocking when disabled, output discharge pulldown, overcurrent protection, over-temperature protection, and deglitched fault reporting. UVLO The undervoltage lockout (UVLO) circuit disables the power switch until the input voltage reaches the UVLO turn-on threshold. Built-in hysteresis prevents unwanted on/off cycling due to input voltage drop from large current surges. FLT is high impedance when the TPS20xxC is in UVLO. ENABLE The logic enable input (EN, or EN), controls the power switch, bias for the charge pump, driver, and other circuits. The supply current is reduced to less than 1 µA when the TPS20xxC is disabled. Disabling the TPS20xxC will immediately clear an active FLT indication. The enable input is compatible with both TTL and CMOS logic levels. The turnon and turnoff times (tON, tOFF) are composed of a delay and a rise or fall time (tR, tF). The delay times are internally controlled. The rise time is controlled by both the TPS20xxC and the external loading (especially capacitance). The fall time is controlled by the TPS20xxC, the loading (R and C), and the output discharge (RPD). An output load consisting of only a resistor will experience a fall time set by the TPS20xxC. An output load with parallel R and C elements will experience a fall time determined by the (R × C) time constant if it is longer than the TPS20xxC’s tF. The enable should not be left open, and may be tied to VIN or GND depending on the device. INTERNAL CHARGE PUMP The device incorporates an internal charge pump and gate drive circuitry necessary to drive the N-channel MOSFET. The charge pump supplies power to the gate driver circuit and provides the necessary voltage to pull the gate of the MOSFET above the source. The driver incorporates circuitry that controls the rise and fall times of the output voltage to limit large current and voltage surges on the input supply, and provides built-in soft-start functionality. The MOSFET power switch will block current from OUT to IN when turned off by the UVLO or disabled. CURRENT LIMIT The TPS20xxC responds to overloads by limiting output current to the static IOS levels shown in the Electrical Characteristics table. When an overload condition is present, the device maintains a constant output current, with the output voltage determined by (IOS × RLOAD). Two possible overload conditions can occur. The first overload condition occurs when either: 1) input voltage is first applied, enable is true, and a short circuit is present (load which draws IOUT > IOS), or 2) input voltage is present and the TPS20xxC is enabled into a short circuit. The output voltage is held near zero potential with respect to ground and the TPS20xxC ramps the output current to IOS. The TPS20xxC will limit the current to IOS until the overload condition is removed or the device begins to thermal cycle. This is demonstrated in Figure 11 where the device was enabled into a short, and subsequently cycles current off and on as the thermal protection engages. The second condition is when an overload occurs while the device is enabled and fully turned on. The device responds to the overload condition within tIOS (Figure 6 and Figure 7) when the specified overload (per Electrical Characteristics table) is applied. The response speed and shape will vary with the overload level, input circuit, and rate of application. The current-limit response will vary between simply settling to IOS, or turnoff and controlled return to IOS. Similar to the previous case, the TPS20xxC will limit the current to IOS until the overload condition is removed or the device begins to thermal cycle. This is demonstrated by Figure 12, Figure 13, and Figure 14. Copyright © 2011, Texas Instruments Incorporated 13 TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com The TPS20xxC thermal cycles if an overload condition is present long enough to activate thermal limiting in any of the above cases. This is due to the relatively large power dissipation [(VIN – VOUT) x IOS] driving the junction temperature up. The device turns off when the junction temperature exceeds 135°C (min) while in current limit. The device remains off until the junction temperature cools 20°C and then restarts. There are two kinds of current limit profiles typically available in TI switch products similar to the TPS20xxC. Many older designs have an output I vs V characteristic similar to the plot labeled "Current Limit with Peaking" in Figure 40. This type of limiting can be characterized by two parameters, the current limit corner (IOC), and the short circuit current (IOS). IOC is often specified as a maximum value. The TPS20xxC family of parts does not present noticeable peaking in the current limit, corresponding to the characteristic labeled "Flat Current Limit" in Figure 40. This is why the IOC parameter is not present in the Electrical Characteristics tables. Current Limit with Peaking Flat Current Limit VIN Decreasing Load Resistance Decreasing Load Resistance Slope = -RDS(ON) VO UT VOUT Slope = -RDS(ON) VIN 0V 0V 0A IOUT IOS IOC 0A IOUT I OS Figure 40. Current Limit Profiles FLT The FLT open-drain output is asserted (active low) during an overload or over-temperature condition. A 9 ms deglitch on both the rising and falling edges avoids false reporting at startup and during transients. A current limit condition shorter than the deglitch period will clear the internal timer upon termination. The deglitch timer will not integrate multiple short overloads and declare a fault. This is also true for exiting from a faulted state. An input voltage with excessive ripple and large output capacitance may interfere with operation of FLT around IOS as the ripple will drive the TPS20xxC in and out of current limit. If the TPS20xxC is in current limit and the over-temperature circuit goes active, FLT will go true immediately (see Figure 12) however exiting this condition is deglitched (see Figure 14). FLT is tripped just as the knee of the constant-current limiting is entered. Disabling the TPS20xxC will clear an active FLT as soon as the switch turns off (see Figure 11). FLT is high impedance when the TPS20xxC is disabled or in under-voltage lockout (UVLO). OUTPUT DISCHARGE A 470Ω (typical) output discharge will dissipate stored charge and leakage current on OUT when the TPS20xxC is in UVLO or disabled. The pull-down circuit will lose bias gradually as VIN decreases, causing a rise in the discharge resistance as VIN falls towards 0 V. 14 Copyright © 2011, Texas Instruments Incorporated TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 www.ti.com APPLICATION INFORMATION INPUT AND OUTPUT CAPACITANCE Input and output capacitance improves the performance of the device; the actual capacitance should be optimized for the particular application. For all applications, a 0.1 µF or greater ceramic bypass capacitor between IN and GND is recommended as close to the device as possible for local noise decoupling. All protection circuits such as the TPS20xxC will have the potential for input voltage overshoots and output voltage undershoots. Input voltage overshoots can be caused by either of two effects. The first cause is an abrupt application of input voltage in conjunction with input power bus inductance and input capacitance when the IN terminal is high impedance (before turn on). Theoretically, the peak voltage is 2 times the applied. The second cause is due to the abrupt reduction of output short circuit current when the TPS20xxC turns off and energy stored in the input inductance drives the input voltage high. Input voltage droops may also occur with large load steps and as the TPS20xxC output is shorted. Applications with large input inductance (e.g. connecting the evaluation board to the bench power-supply through long cables) may require large input capacitance reduce the voltage overshoot from exceeding the absolute maximum voltage of the device. The fast current-limit speed of the TPS20xxC to hard output short circuits isolates the input bus from faults. However, ceramic input capacitance in the range of 1µF to 22µF adjacent to the TPS20xxC input aids in both speeding the response time and limiting the transient seen on the input power bus. Momentary input transients to 6.5V are permitted. Output voltage undershoot is caused by the inductance of the output power bus just after a short has occurred and the TPS20xxC has abruptly reduced OUT current. Energy stored in the inductance will drive the OUT voltage down and potentially negative as it discharges. Applications with large output inductance (such as from a cable) benefit from use of a high-value output capacitor to control the voltage undershoot. When implementing USB standard applications, a 120 µF minimum output capacitance is required. Typically a 150 µF electrolytic capacitor is used, which is sufficient to control voltage undershoots. However, if the application does not require 120 µF of capacitance, and there is potential to drive the output negative, a minimum of 10 µF ceramic capacitance on the output is recommended. The voltage undershoot should be controlled to less than 1.5 V for 10 µs. POWER DISSIPATION AND JUNCTION TEMPERATURE It is good design practice to estimate power dissipation and maximum expected junction temperature of the TPS20xxC. The system designer can control choices of package, proximity to other power dissipating devices, and printed circuit board (PCB) design based on these calculations. These have a direct influence on maximum junction temperature. Other factors, such as airflow and maximum ambient temperature, are often determined by system considerations. It is important to remember that these calculations do not include the effects of adjacent heat sources, and enhanced or restricted air flow. Addition of extra PCB copper area around these devices is recommended to reduce the thermal impedance and maintain the junction temperature as low as practical. The lower junction temperatures achieved by soldering the pad improve the efficiency and reliability of both TPS20xxC parts and the system. The following examples were used to determine the θJACustom thermal impedances noted in the THERMAL INFORMATION table. They were based on use of the JEDEC high-k circuit board construction (2 signal and 2 plane) with 4, 1oz. copper weight, layers. While it is recommended that the DGN package PAD be soldered to circuit board copper fill and vias for low thermal impedance, there may be cases where this is not desired. For example, use of routing area under the IC. The TPS20xxC will operate properly with the pad not connected to GND. θJA for a 4 layer board with the pad not soldered is approximately 141°C/W for the 0.5-A and 1-A rated parts and 139°C/W for the 1.5-A and 2-A rated parts. These values may be used in Equation 1 below to determine the maximum junction temperature. Copyright © 2011, Texas Instruments Incorporated 15 TPS20xxC SLVSAU6A – JUNE 2011 – REVISED JULY 2011 GND: 0.052in2 Total & 3 x 0.018in vias www.ti.com GND: 0.056in2 total area & 3 x 0.018in vias COUT COUT 0.050in trace CIN 0.050in trace CIN 4 x 0.01in vias 2 2 VIN : 0.00925in VOUT: 0.041in total & 3 x 0.018in vias Figure 41. DBV Package PCB Layout Example VIN: 0.0145in2 area & 2 x 0.018in vias VOUT: 0.048in2 total area 5 x 0.01in vias Figure 42. DGN Package PCB Layout Example The following procedure requires iteration because power loss is due to the internal MOSFET I2 × RDS(ON), and RDS(ON) is a function of the junction temperature. As an initial estimate, use the RDS(ON) at 125°C from the TYPICAL CHARACTERISTICS, and the preferred package thermal resistance for the preferred board construction from the THERMAL INFORMATION table. TJ = TA + ((IOUT2 x RDS(ON)) x θJA) (1) Where: IOUT = rated OUT pin current (A) RDS(ON) = Power switch on-resistance at an assumed TJ (Ω) TA = Maximum ambient temperature (°C) TJ = Maximum junction temperature (°C) θJA = Thermal resistance (°C/W) If the calculated TJ is substantially different from the original assumption, estimate a new value of RDS(ON) using the typical characteristic plot and recalculate. If the resulting TJ is not less than 125°C, try a PCB construction and/or package with lower θJA . SPACER REVISION HISTORY Changes from Original (June 2011) to Revision A Page • Updated MSOP Devices Status From: Preview To: Active .................................................................................................. 1 • Corrected pinout numbers for the 5-PIN PACKAGE ............................................................................................................ 6 16 Copyright © 2011, Texas Instruments Incorporated PACKAGE OPTION ADDENDUM www.ti.com 11-Aug-2011 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) Samples (Requires Login) TPS2000CDGN PREVIEW MSOPPowerPAD DGN 8 80 TBD Call TI Call TI TPS2000CDGNR PREVIEW MSOPPowerPAD DGN 8 2500 TBD Call TI Call TI TPS2001CDGN PREVIEW MSOPPowerPAD DGN 8 80 TBD Call TI Call TI TPS2001CDGNR ACTIVE MSOPPowerPAD DGN 8 2500 Green (RoHS & no Sb/Br) TPS2051CDBVR PREVIEW SOT-23 DBV 5 3000 TBD Call TI Call TI CU NIPDAU Level-2-260C-1 YEAR TPS2051CDBVT PREVIEW SOT-23 DBV 5 250 TBD Call TI Call TI TPS2065CDBVR PREVIEW SOT-23 DBV 5 3000 TBD Call TI Call TI TPS2065CDBVT PREVIEW SOT-23 DBV 5 250 TBD Call TI Call TI TPS2065CDGN ACTIVE MSOPPowerPAD DGN 8 80 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR TPS2065CDGNR ACTIVE MSOPPowerPAD DGN 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR TPS2069CDGN ACTIVE MSOPPowerPAD DGN 8 80 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR TPS2069CDGNR ACTIVE MSOPPowerPAD DGN 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR (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) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Addendum-Page 1 PACKAGE OPTION ADDENDUM www.ti.com 11-Aug-2011 Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. 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Addendum-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 15-Aug-2011 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TPS2000CDGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.3 1.3 8.0 12.0 Q1 TPS2000CDGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 TPS2001CDGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.3 1.3 8.0 12.0 Q1 TPS2001CDGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 TPS2065CDGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.3 1.3 8.0 12.0 Q1 TPS2065CDGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 TPS2069CDGNR MSOPPower PAD DGN 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 TPS2069CDGNR MSOP- DGN 8 2500 330.0 12.4 5.3 3.3 1.3 8.0 12.0 Q1 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 15-Aug-2011 Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant Power PAD *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPS2000CDGNR MSOP-PowerPAD DGN 8 2500 370.0 355.0 55.0 TPS2000CDGNR MSOP-PowerPAD DGN 8 2500 360.0 162.0 98.0 TPS2001CDGNR MSOP-PowerPAD DGN 8 2500 370.0 355.0 55.0 TPS2001CDGNR MSOP-PowerPAD DGN 8 2500 360.0 162.0 98.0 TPS2065CDGNR MSOP-PowerPAD DGN 8 2500 370.0 355.0 55.0 TPS2065CDGNR MSOP-PowerPAD DGN 8 2500 360.0 162.0 98.0 TPS2069CDGNR MSOP-PowerPAD DGN 8 2500 360.0 162.0 98.0 TPS2069CDGNR MSOP-PowerPAD DGN 8 2500 370.0 355.0 55.0 Pack Materials-Page 2 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. 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