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TPL5010QDDCTQ1

TPL5010QDDCTQ1

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    TSOT-23-6L

  • 描述:

    具有看门狗功能的汽车 AEC-Q100 毫微功耗系统计时器,1.8V~5V

  • 数据手册
  • 价格&库存
TPL5010QDDCTQ1 数据手册
Product Folder Sample & Buy Support & Community Tools & Software Technical Documents TPL5010-Q1 SNAS679 – SEPTEMBER 2016 TPL5010-Q1 AEC-Q100 Nano-Power System Timer with Watchdog Function 1 Features 2 Applications • • • • • • • • • • 1 • • • • • • • • • • Qualified for Automotive Applications AEC-Q100 Qualified with the Following Results: – Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range – Device HBM ESD Classification Level 2 – Device CDM ESD Classification Level C5 Current Consumption of 35 nA (typ) at 2.5 V Supply Voltage from 1.8 V to 5.5 V Selectable Time Intervals 100 ms to 7200 s Timer Accuracy 1% (Typical) Resistor Selectable Time Interval Watchdog Functionality Manual Reset TPL5x10Q Family of AEC-Q100 Nano-Power System Timers TPL5010-Q1 - Supply Current 35 nA – Low Power Timer – Watchdog Function – Programmable Delay Range – Manual Reset TPL5110-Q1 - Supply Current 35 nA – Low Power Timer – MOS-Driver – Programmable Delay Range – Manual Reset – One-Shot Feature Electric Vehicles Always On Systems Battery powered systems Clutch Actuator circuit Car Door Handle circuit Smart Key Remote current sensor Intruder Detection 3 Description The TPL5010-Q1 Nano Timer is a low power, AECQ100 qualified timer with a watchdog feature ideal for system wake up in duty cycled or battery powered applications. In such systems the microcontroller timer can be used for system wake-up, but if the timer sleep current is high, up to 60-80% of the total system current can be consumed by the microcontroller timer in this sleep mode. Consuming only 35 nA, the TPL5010-Q1 can replace the functionality of the integrated microcontroller timer and allow the microcontroller to be placed in a much lower power mode. Such power savings extend the operating life of batteries and enable the use of significantly smaller batteries making the TPL5010Q1 ideal for power sensitive applications.. The TPL5010-Q1 provides selectable timing intervals from 100 ms to 7200 s and is designed for interrupt-driven applications. Some standards (such as EN50271) require implementation of a watchdog for safety and the TPL5010-Q1 realizes this watchdog function at almost no additional power consumption. The TPL5010-Q1 is available in a 6-pin SOT23 package. Device Information(1) PART NUMBER TPL5010-Q1 PACKAGE BODY SIZE (NOM) SOT23 (6) 3.00 mm x 3.00 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. Simplified Application µC VOUT TPL5010-Q1 VIN VDD VDD RSTn RSTn GND WAKE GPIO DELAY/ M_RST DONE GPIO + Battery Rp POWER MANAGEMENT - GND REXT GND 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. TPL5010-Q1 SNAS679 – SEPTEMBER 2016 www.ti.com Table of Contents 1 2 3 4 5 6 7 8 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Device Comparison Table..................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 2 3 4 7.1 7.2 7.3 7.4 7.5 7.6 7.7 4 4 4 4 5 6 7 Absolute Maximum Ratings ...................................... ESD Ratings.............................................................. Recommended Operating Conditions ...................... Thermal Information ................................................. Electrical Characteristics........................................... Timing Requirements ............................................... Typical Characteristics .............................................. 8.3 Feature Description................................................... 8 8.4 Device Functional Modes.......................................... 9 8.5 Programming ............................................................ 9 9 Application and Implementation ........................ 15 9.1 Application Information............................................ 15 9.2 Typical Application ................................................. 15 10 Power Supply Recommendations ..................... 17 11 Layout................................................................... 17 11.1 Layout Guidelines ................................................. 17 11.2 Layout Example .................................................... 17 12 Device and Documentation Support ................. 18 12.1 12.2 12.3 12.4 12.5 Detailed Description .............................................. 8 8.1 Overview ................................................................... 8 8.2 Functional Block Diagram ......................................... 8 Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 18 18 18 18 18 13 Mechanical, Packaging, and Orderable Information ........................................................... 18 4 Revision History DATE REVISION NOTES September 2016 * Initial release. 5 Device Comparison Table TPL5x10Q Family of AEC-Q100 Nano- Power System Timers PART NUMBER SUPPLY CURRENT (Typ) SPECIAL FEATURES Low Power Timer TPL5010-Q1 35 nA Watchdog Function Programmable Delay Range Manual Reset Low Power Timer MOS-Driver TPL5110-Q1 35 nA Programmable Delay Range Manual Reset One-Shot Feature 2 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 TPL5010-Q1 www.ti.com SNAS679 – SEPTEMBER 2016 6 Pin Configuration and Functions SOT23 6-Pin DDC Top View TPL5010-Q1 1 VDD RSTn 6 2 GND WAKE 5 3 DELAY/ M_RST DONE 4 Table 1. Pin Functions PIN NO. NAME TYPE (1) DESCRIPTION APPLICATION INFORMATION 1 VDD P Supply voltage 2 GND G Ground 3 DELAY/ M_RST I Time Interval set and Manual Reset Resistance between this pin and GND is used to select the time interval. The reset switch is also connected to this pin. 4 DONE I Logic Input for watchdog functionality Digital signal driven by the µC to indicate successful processing of the WAKE signal. 5 WAKE O Timer output signal generated every tIP period. Digital pulsed signal to wake up the µC at the end of the programmed time interval. 6 RSTn O Reset Output (open drain output) Digital signal to RESET the µC, pull-up resistance is required (1) G= Ground, P= Power, O= Output, I= Input. Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 3 TPL5010-Q1 SNAS679 – SEPTEMBER 2016 www.ti.com 7 Specifications 7.1 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1) Supply voltage (VDD-GND) Input voltage at any pin Tstg TJ (1) (2) (3) (2) MIN MAX UNIT –0.3 6.0 V –0.3 VDD + 0.3 V Input current on any pin –5 5 mA Storage temperature –65 150 °C 150 °C Junction temperature (3) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions . Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. The voltage between any two pins should not exceed 6V. The maximum power dissipation is a function of TJ(MAX), θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is PDMAX = (TJ(MAX) - TA)/ θJA. All numbers apply for packages soldered directly onto a PC board. 7.2 ESD Ratings VALUE V(ESD) (1) Electrostatic discharge Human-body model, per AEC Q100-002 (1) ±2000 Charged-device model (CDM), per AEC Q10-011 ±750 UNIT V AEC Q100-002 indicates that HBM stressing shall be in accordance with ANSI/ESDA/JEDEC JS-001 specification. 7.3 Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) MIN NOM MAX UNIT Supply voltage (VDD-GND) 1.8 5.5 V Temperature –40 125 °C 7.4 Thermal Information TPL5010-Q1 THERMAL METRIC (1) SOT23 UNIT 6 PINS RθJA Junction-to-ambient thermal resistance 163 °C/W RθJC(top) Junction-to-case (top) thermal resistance 26 °C/W RθJB Junction-to-board thermal resistance 57 °C/W ψJT Junction-to-top characterization parameter 7.5 °C/W ψJB Junction-to-board characterization parameter 57 °C/W (1) 4 For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 TPL5010-Q1 www.ti.com SNAS679 – SEPTEMBER 2016 7.5 Electrical Characteristics TA= 25°C, VDD-GND=2.5 V (unless otherwise stated) (1) PARAMETER TEST CONDITIONS MIN (2) TYP (3) MAX (2) UNIT POWER SUPPLY IDD Supply current (4) Operation mode 35 50 nA Digital conversion of external resistance (Rext) 200 400 µA TIMER tIP tOSC Time interval period (5) 1650 selectable time Min time interval Intervals Max time interval 7200 Time interval setting accuracy (6) Excluding the precision of Rext ±0.6% Timer interval setting accuracy over supply voltage 1.8 V ≤ VDD ≤ 5.5 V Oscillator accuracy 100 ms s ±25 –0.5% ppm/V 0.5% Oscillator accuracy over temperature (5) -40°C ≤ TA ≤ 125°C 150 ppm/°C Oscillator accuracy over supply voltage (5) 1.8 V ≤ VDD ≤ 5.5 V ±0.4 %/V Oscillator accuracy over life time (7) tDONE Minimum DONE pulse width 0.24% (5) 100 ns tRSTn RSTn pulse width 320 ms tWAKE WAKE pulse width 20 ms t_Rext Time to convert Rext (5) 100 ms DIGITAL LOGIC LEVELS (1) (2) (3) (4) (5) (6) (7) VIH Minimum logic high threshold DONE pin 0.7 × VDD V VIL Maximum logic low threshold DONE pin 0.3 × VDD V VOH Logic output high-level WAKE pin VOL Logic output low-level WAKE pin Iout = 100 µA VDD – 0.3 V Iout = 1 mA VDD – 0.7 V Iout = –100 µA 0.3 V Iout = –1 mA 0.7 V 0.3 VOLRSTn RSTn logic output low-level IOL= –1 mA IOHRSTn RSTn high-level output current VOHRSTn = VDD VIHM_RST Minimum logic high threshold DELAY/M_RST pin (5) V 1 nA 1.5 V Values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of the device such that TJ = TA. No specification of parametric performance is indicated in the electrical tables under conditions of internal self-heating where TJ > TA. Absolute Maximum Ratings indicate junction temperature limits beyond which the device may be permanently degraded, either mechanically or electrically. Limits are specified by testing, design, or statistical analysis at 25°C. Limits over the operating temperature range are specified through correlations using statistical quality control (SQC) method. Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will also depend on the application and configuration. The typical values are not tested and are not specified on shipped production material. The supply current excludes load and pull-up resistor current. Input pins are at GND or VDD. This parameter is specified by design and/or characterization and is not tested in production. The accuracy for time interval settings below 1 second is ±100 ms. Operational life time test procedure equivalent to 10 years. Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 5 TPL5010-Q1 SNAS679 – SEPTEMBER 2016 www.ti.com 7.6 Timing Requirements MIN (1) (3) trRSTn Rise Time RSTn tfRSTn Fall time RSTn trWAKE Rise time WAKE tfWAKE (3) Fall time WAKE (3) (3) tDDONE DONE to RSTn or WAKE to DONE delay tM_RST Minimum valid manual reset tDB De-bounce manual reset (1) (2) (3) (4) MAX (1) UNIT Capacitive load 50 pF, Rpull-up 100 kΩ 11 µs Capacitive load 50 pF, Rpull-up 100 kΩ 50 ns Capacitive load 50 pF 50 ns Capacitive load 50 pF 50 ns Min delay (4) 100 ns (4) tIP–20 ms Observation time 30 ms 20 ms 20 ms Max delay (3) NOM (2) Limits are specified by testing, design, or statistical analysis at 25°C. Limits over the operating temperature range are specified through correlations using statistical quality control (SQC) method. Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will also depend on the application and configuration. The typical values are not tested and are not specified on shipped production material. This parameter is specified by design and/or characterization and is not tested in production. In case of RSTn from its falling edge, in case of WAKE, from its rising edge. VDD ttWAKEt trWAKE WAKE ttIPt tDONE tfWAKE ttDDONEt DONE ttRSTn+ tIPt trRSTn ttRSTn+tDBt ttRSTnt RSTn ttR_EXT + tRSTnt tfRSTn DELAY/ M_RST ttM_RST Figure 1. TPL5010-Q1 Timing 6 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 TPL5010-Q1 www.ti.com SNAS679 – SEPTEMBER 2016 7.7 Typical Characteristics 100 100 TA= -40°C TA= 25°C TA= 70°C TA= 105°C TA = 125°C 90 80 80 Supply current (nA) Supply current (nA) VDD= 1.8V VDD= 2.5V VDD= 3.3V VDD= 5.5V 90 70 60 50 70 60 50 40 40 30 30 20 1.5 1.9 2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 Supply Voltage (V) 20 -40 5.5 -25 -10 20 35 50 65 80 95 110 125 110 125 Temperature (°C) Figure 2. IDD vs VDD Figure 3. IDD vs Temperature 2 2 TA= -40°C TA= 25°C TA= 70°C TA= 105°C TA= 125°C VDD= 1.8V VDD= 2.5V VDD= 3.3V VDD= 5.5V 1.5 Oscillator accuracy (%) 1.5 Oscillator accuracy (%) 5 D00 1 0.5 0 -0.5 1 0.5 0 -0.5 -1 1.5 1.9 2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 -1 -40 5.5 -25 -10 5 20 Supply Voltage (V) 35 50 65 80 95 Temperature (°C) Figure 4. Oscillator Accuracy vs VDD Figure 5. Oscillator Accuracy vs Temperature 1000 40% POR REXT READING 35% 30% 10 Frequency Supply current (PA) 100 1 TIMER MODE 0.1 25% 20% 15% 10% 5% 0.01 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Time (s) 0.8 0.9 1 0 -1 -0.8 -0.4 -0.2 0 0.2 0.4 0.6 0.8 Accuracy (%) number of observations > 20000 Figure 6. IDD vs Time -0.6 1 s < tIP ≤ 7200 s Figure 7. Time Interval Setting Accuracy Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 7 TPL5010-Q1 SNAS679 – SEPTEMBER 2016 www.ti.com 8 Detailed Description 8.1 Overview The TPL5010-Q1 is a system wakeup timer with a watchdog feature, ideal for low power applications. TPL5010Q1 is ideal for use in interrupt-driven applications and provides selectable timing from 100 ms to 7200 s. 8.2 Functional Block Diagram VDD RSTn LOW FREQUENCY OSCILLATOR FREQUENCY DIVIDER LOGIC CONTROL WAKE DONE DELAY/ M_RST DECODER & MANUAL RESET DETECTOR GND 8.3 Feature Description The DONE, WAKE and RSTn signals are used to implement the watchdog function. The TPL5010-Q1 is programmed to issue a periodic WAKE pulse to a µC which is in sleep or standby mode. After receiving the WAKE pulse, the µC must issue a DONE signal to the TPL5010-Q1 at least 20 ms before the rising edge of the next WAKE pulse. If the DONE signal is not asserted, the TPL5010-Q1 asserts the RSTn signal to reset the µC. A manual reset function is realized by momentarily pulling the DELAY/M_RST pin to VDD. ttIPt ttIPt WAKE DONE MISSED DONE ttRSTn+ tIPt RSTn DELAY/ M_RST Figure 8. Watchdog 8.3.1 WAKE The WAKE pulse is sent out from the TPL5010-Q1 when the programmed time interval starts (except at the beginning of the first cycle or if in the previous interval the DONE has not been received). This signal is normally low. 8.3.2 DONE The DONE pin is driven by a µC to signal successful processing of the WAKE signal. The TPL5010-Q1 recognizes a valid DONE signal as a low to high transition; if two or more DONE signals are received within the time interval, only the first DONE signal is processed. The DONE signal resets the counter of the watchdog only. If the DONE signal is received when the WAKE is still high, the WAKE will go low as soon as the DONE is recognized. 8 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 TPL5010-Q1 www.ti.com SNAS679 – SEPTEMBER 2016 Feature Description (continued) 8.3.3 RSTn To implement the reset interface between the TPL5010-Q1 and the µC a pull-up resistance is required. 100 kΩ is recommended, to minimize current. During the POR and the reading of the REXT the RSTn signal is LOW. RSTn is asserted (LOW) for either one of the following conditions: • 1. If the DELAY/M_RST pin is high for at least two consecutive cycles of the internal oscillator (approximately 20 ms). • 2. At the beginning of a new time interval if DONE is not received at least 20 ms before the next WAKE rising edge (see Figure 8). 8.4 Device Functional Modes 8.4.1 Startup During startup, after POR, the TPL5010-Q1 executes a one-time measurement of the resistance attached to the DELAY/M_RST pin in order to determine the desired time interval for WAKE. This measurement interval is tR_EXT. During this measurement a constant current is temporarily flowing into REXT. ttR_EXT + tRSTn + tIPt ttIPt WAKE DONE RSTn DELAY/ M_RST POR RESISTANCE READING Figure 9. Startup 8.4.2 Normal Operating Mode During normal operating mode, the TPL5010-Q1 asserts periodic WAKE pulses in response to valid DONE pulses from the µC. If either a manual reset is applied (logic HIGH on DELAY/M_RST pin) or the µC does not issue a DONE pulse within the required time, the TPL5010-Q1 asserts the RSTn signal to the µC and restarts its internal counters. See Figure 8 and Figure 10 . 8.5 Programming 8.5.1 Configuring the WAKE Interval with the DELAY/M_RST Pin The time interval between 2 adjacent WAKE pulses (rising edges) is selectable through an external resistance (REXT) between the DELAY/M_RST pin and ground. The value of the resistance REXT is converted one time after POR. The allowable range of REXT is 500 Ω to 170 kΩ. At least a 1% precision resistance is recommended. See Timer Interval Selection Using External Resistance for how to set the WAKE pulse interval using REXT. The time between 2 adjacent RESET signals (falling edges) or between a RESET (falling edge) and a WAKE (rising edge) is given by the sum of the programmed time interval and the tRSTn (reset pulse width). Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 9 TPL5010-Q1 SNAS679 – SEPTEMBER 2016 www.ti.com Programming (continued) 8.5.2 Manual Reset If VDD is connected to the DELAY/M_RST pin, the TPL5010-Q1 recognizes this as a manual reset condition. In this case the time interval is not set. If the manual reset is asserted during the POR or during the reading procedure, the reading procedure is aborted and is re-started as soon as the manual reset switch is released. A pulse on the DELAY/M_RST pin is recognized as a valid manual reset only if it lasts at least 20 ms (observation time is 30 ms). A valid manual reset resets all the counters inside the TPL5010-Q1. The counters restart only when the high digital voltage at DELAY/M_RST is removed and the next tRSTn is elapsed. ttIPt WAKE DONE ttRSTn+ tIPt RSTn ANY RESET ttM_RSTt ttDBt ttM_RSTt DELAY/ M_RST VALID M_RST NOT VALID M_RST Figure 10. Manual Reset 8.5.2.1 DELAY/M_RST A resistance in the range between 500 Ω and 170 kΩ needs to be connected in order to select a valid time interval. At the POR and during the reading of the resistance the DELAY/M_RST is connected to an analog signal chain though a mux. After the reading of the resistance the analog circuit is switched off and the DELAY/RST is connected to a digital circuit. The manual reset detection is supported with a de-bounce feature which makes the TPL5010-Q1 insensitive to the glitches on the DELAY/M_RST pin. When a valid manual reset signal is asserted on the DELAY/M_RST pin, the RSTn signal is asserted LOW after a delay of tM_RST. It remains LOW after a valid manual reset is asserted + tDB + tRSTn. Due to the asynchronous nature of the manual reset signal and its arbitrary duration, the LOW status of the RSTn signal maybe affected by an uncertainty of about ±5 ms. A valid manual reset puts all the digital output signals at their default values: • WAKE = LOW • RSTn = asserted LOW 8.5.2.2 Circuitry The manual reset may be implemented using a switch (momentary mechanical action). The TPL5010-Q1 offers 2 possible approaches according to the power consumption constraints of the application. 10 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 TPL5010-Q1 www.ti.com SNAS679 – SEPTEMBER 2016 Programming (continued) µC VOUT TPL5010-Q1 VIN VDD VDD RSTn RSTn GND WAKE GPIO DELAY/ M_RST DONE GPIO + Battery Rp POWER MANAGEMENT - REXT GND GND Figure 11. Manual Reset with SPST Switch For use cases that do not require the lowest power consumption, using a single pole single throw switch may offer a lower cost solution. The DELAY/M_RST pin may be directly connected to VDD with REXT in the circuit. The current drawn from the supply voltage during the reset is given by VDD/REXT. µC VOUT TPL5010-Q1 VIN VDD VDD RSTn RSTn GND WAKE GPIO DELAY/ M_RST DONE GPIO + Battery Rp POWER MANAGEMENT - REXT GND GND Figure 12. Manual Reset with SPDT Switch The reset function may also be asserted by switching DELAY/M_RST from REXT to VDD using a single pole double throw switch, which will provide a lower power solution for the manual reset, because no current flows. 8.5.3 Timer Interval Selection Using External Resistance In order to set the time interval, the external resistance REXT is selected according the following formula: § 100 ¨ ¨ © R EXT b b 2 4 a c 100 T 2a · ¸ ¸ ¹ where • • • T is the desired time interval in seconds REXT is the resistance value to use in Ω a, b, c are coefficients depending on the range of the time interval (1) Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 11 TPL5010-Q1 SNAS679 – SEPTEMBER 2016 www.ti.com Programming (continued) Table 2. Coefficients for Equation 1 SET TIME INTERVAL RANGE (s) a b c 1 1 1000 0.3177 –136.2571 34522.4680 EXAMPLE Required time interval: 8 s The coefficient set to be selected is the number 2. The formula becomes: § 46.9861 100¨ ¨ © REXT 46.98612 4*0.1284 2561.8889 100*8 ·¸ ¸ 2*0.1284 ¹ (2) The resistance value is 10.18 kΩ. Table 3 and Table 4 contain example values of tIP and their corresponding value of REXT. Table 3. First 9 Time Intervals tIP (ms) RESISTANCE (Ω) CLOSEST REAL VALUE (Ω) PARALLEL OF TWO 1% TOLERANCE RESISTORS (kΩ) 100 500 500 1.0 // 1.0 200 1000 1000 - 300 1500 1500 2.43 // 3.92 400 2000 2000 - 500 2500 2500 4.42 // 5.76 600 3000 3000 5.36 // 6.81 700 3500 3500 4.75 // 13.5 800 4000 4000 6.19 // 11.3 900 4500 4501 6.19 // 16.5 Table 4. Most Common Time Intervals Between 1 s to 2 h 12 tIP CALCULATED RESISTANCE (kΩ) CLOSEST REAL VALUE (kΩ) PARALLEL OF TWO 1% TOLERANCE RESISTORS (kΩ) 1s 5.20 5.202 7.15 // 19.1 2s 6.79 6.788 12.4 // 15.0 3s 7.64 7.628 12.7// 19.1 4s 8.30 8.306 14.7 // 19.1 5s 8.85 8.852 16.5 // 19.1 6s 9.27 9.223 18.2 // 18.7 7s 9.71 9.673 19.1 // 19.6 8s 10.18 10.180 11.5 // 8.87 9s 10.68 10.68 17.8 // 26.7 10 s 11.20 11.199 15.0 // 44.2 20 s 14.41 14.405 16.9 // 97.6 30 s 16.78 16.778 32.4 // 34.8 40 s 18.75 18.748 22.6 // 110.0 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 TPL5010-Q1 www.ti.com SNAS679 – SEPTEMBER 2016 Table 4. Most Common Time Intervals Between 1 s to 2 h (continued) tIP CALCULATED RESISTANCE (kΩ) CLOSEST REAL VALUE (kΩ) PARALLEL OF TWO 1% TOLERANCE RESISTORS (kΩ) 28.7 // 66.5 50 s 20.047 20.047 1 min 22.02 22.021 40.2 // 48.7 2 min 29.35 29.349 35.7 // 165.0 3 min 34.73 34.729 63.4 // 76.8 4 min 39.11 39.097 63.4 // 102.0 5 min 42.90 42.887 54.9 // 196.0 6 min 46.29 46.301 75.0 // 121.0 7 min 49.38 49.392 97.6 // 100.0 8 min 52.24 52.224 88.7 // 127.0 9 min 54.92 54.902 86.6 // 150.0 10 min 57.44 57.437 107.0 // 124.0 20 min 77.57 77.579 140.0 // 174.0 30 min 92.43 92.233 182.0 // 187.0 40 min 104.67 104.625 130.0 // 536.00 50 min 115.33 115.331 150.0 // 499.00 1h 124.91 124.856 221.0 // 287.00 1 h 30 min 149.39 149.398 165.0 // 1580.0 2h 170.00 170.00 340.0 // 340.0 8.5.4 Quantization Error The TPL5010-Q1 can generate 1650 discrete timer intervals in the range of 100 ms to 7200 s. The first 9 intervals are multiples of 100 ms. The remaining 1641 intervals cover the range between 1 s to 7200 s. Because they are discrete intervals, there is a quantization error associated with each value. The quantization error can be evaluated according to the following formula: Err 100 TDESIRED TADC TDESIRED (3) Where: ª 1 INT « ¬ 100 T ADC § R D2 ¨¨ a 2 © 100 b RD 100 ·º c ¸¸ » ¹¼ (4) º ªR INT « EXT » ¬ 100 ¼ RD where • • REXT is the resistance calculated with Equation 1 a, b, c are the coefficients of the equation listed in Table 2 (5) 8.5.5 Error Due to Real External Resistance REXT is a theoretical value and may not be available in standard commercial resistor values. It is possible to closely approach the theoretical REXT using two or more standard values in parallel. However, standard values are characterized by a certain tolerance. This tolerance will affect the accuracy of the time interval. The accuracy can be evaluated using the following procedure: 1. Evaluate the min and max values of REXT (REXT_MIN, REXT_MAX with Equation 1 using the selected commercial resistance values and their tolerances. 2. Evaluate the time intervals (TADC_MIN[REXT_MIN], TADC_MAX[REXT_MAX]) with Equation 4. 3. Find the errors using Equation 3 with TADC_MIN, TADC_MAX. The results of the formula indicate the accuracy of the time interval. Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 13 TPL5010-Q1 SNAS679 – SEPTEMBER 2016 www.ti.com The example below illustrates the procedure. • Desired time interval , T_desired = 600 s • Required REXT, from Equation 1, REXT= 57.44 kΩ From Table 4, REXT can be built with a parallel combination of two commercial values with 1% tolerance: R1=107 kΩ, R2=124 kΩ. The uncertainty of the equivalent parallel resistance can be found using Equation 6. §u · uR// R// ¨ R1 ¸ © R1 ¹ 2 § uR 2 · ¨ ¸ © R2 ¹ 2 (6) Where uRn (n=1,2) represent the uncertainty of a resistance, u R n Rn Tolerance 3 (7) The uncertainty of the parallel resistance is 0.82%, meaning the value of REXT may range between REXT_MIN = 56.96 kΩ and REXT_MAX = 57.90 kΩ. Using these value of REXT, the digitized timer intervals calculated with Equation 4 are respectively TADC_MIN = 586.85 s and TADC_MAX = 611.3 s, giving an error range of –1.88% / +2.19%. The asymmetry of the error range is due to the quadratic transfer function of the resistance digitizer. 14 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 TPL5010-Q1 www.ti.com SNAS679 – SEPTEMBER 2016 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 In battery-powered applications, one design constraint is the need for low current consumption. The TPL5010-Q1 is ideal for applications where there is a need to monitor environmental conditions at a fixed time interval. Often in these applications, a watchdog or other internal timer in a µC is used to implement a wakeup function. Using the TPL5010-Q1 to implement the watchdog function will consume only tens of nA, significantly improving the power consumption of the system. 9.2 Typical Application The TPL5010-Q1 can be used in conjunction with environment sensors to build a low-power environment datalogger, such as an air quality data-logger. In this application, due to the monitored phenomena, the µC and the front end of the sensor spend most of the time in the idle state, waiting for the next logging interval, usually a few hundred of milliseconds. Figure 13 illustrates a data logging application based on a µC, and a front end for a gas sensor based on the LMP91000. VOLTAGE REFERENCE VIN VOUT GND µC VOUT TPL5010-Q1 VIN + Lithium ion battery LMP91000 Rp 100k Rp 100k VDD Rp 100k VDD VREF VDD RSTn RST SDA SCL CE GND WAKE GPIO SCL SDA RE DELAY/ M_RST DONE GPIO ADC VOUT WE GND GND CE POWER MANAGEMENT GND RE WE MENB REXT Button Button GPIO GPIO GPIO GPIO GAS SENSOR Temp 29°C CO 0PPM TIME xx:xx Date xx/xx/xxxx Button DISPLAY KEYBOARD Figure 13. Data-Logger 9.2.1 Design Requirements The design is driven by the low current consumption constraint. The data are usually acquired on a rate that ranges between 1 s and 10 s. The highest necessity is the maximization of the battery life. The TPL5010-Q1 helps achieve that goal because it allows putting the µC in its lowest power mode. The TPL5010-Q1 will take care of the watchdog and the timing. Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 15 TPL5010-Q1 SNAS679 – SEPTEMBER 2016 www.ti.com Typical Application (continued) 9.2.2 Detailed Design Procedure When the main constraint is the battery life, the selection of a low-power voltage reference, µC, and display is mandatory. The first step in the design is the calculation of the power consumption of the devices in their different mode of operations. For instance, the LMP91000 burns most of the power when in gas measurement mode, then according to the connected gas sensor it has 2 idle states: stand-by and deep sleep. The same is true for the µC, such as one of the MSP430 family, which can be placed in one of its lower power modes, such as LMP3.5 or LMP4.5. In this case, the TPL5010-Q1 can be used to implement the watchdog and wakeup timing functions. After the power budget calculation it is possible to select the appropriate time interval which satisfies the application constraints and maximize the life of the battery. 9.2.3 Application Curves Current consumption Without TPL5010-Q1 With TPL5010-Q1 Time Figure 14. Effect of TPL5010-Q1 on Current Consumption 16 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 TPL5010-Q1 www.ti.com SNAS679 – SEPTEMBER 2016 10 Power Supply Recommendations The TPL5010-Q1 requires a voltage supply within 1.8 V and 5.5 V. A multilayer ceramic bypass X7R capacitor of 0.1 μF between VDD and GND pin is recommended. 11 Layout 11.1 Layout Guidelines The DELAY/M_RST pin is sensitive to parasitic capacitance. It is suggested that the traces connecting the resistance on this pin to GROUND be kept as short as possible to minimize parasitic capacitance. This capacitance can affect the initial set up of the time interval. Signal integrity on the WAKE and RSTn pins is also improved by keeping the trace length between the TPL5010-Q1 and the µC short to reduce the parasitic capacitance. 11.2 Layout Example Figure 15. Layout Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 17 TPL5010-Q1 SNAS679 – SEPTEMBER 2016 www.ti.com 12 Device and Documentation Support 12.1 Receiving Notification of Documentation Updates To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper right corner, click on Alert me to register and receive a weekly digest of any product information that has changed. For change details, review the revision history included in any revised document. 12.2 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. 12.3 Trademarks E2E is a trademark of Texas Instruments. All other trademarks are the property of their respective owners. 12.4 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. 12.5 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. 18 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Product Folder Links: TPL5010-Q1 PACKAGE OPTION ADDENDUM www.ti.com 18-May-2022 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) Samples (4/5) (6) TPL5010QDDCRQ1 ACTIVE SOT-23-THIN DDC 6 3000 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM -40 to 125 13VX Samples TPL5010QDDCTQ1 ACTIVE SOT-23-THIN DDC 6 250 RoHS & Green NIPDAU | SN Level-1-260C-UNLIM -40 to 125 13VX Samples (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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TPL5010QDDCTQ1
  •  国内价格 香港价格
  • 1+12.913271+1.60189
  • 10+9.1098210+1.13007
  • 25+8.1454225+1.01044
  • 100+7.09172100+0.87973

库存:2088

TPL5010QDDCTQ1
  •  国内价格
  • 1+8.11080
  • 10+6.84720
  • 30+6.15600
  • 250+5.36760
  • 500+5.02200

库存:754