TL7700 SLVS220F – JULY 1999 – REVISED AUGUST 2011 www.ti.com SUPPLY-VOLTAGE SUPERVISOR Check for Samples: TL7700 FEATURES 1 • • • • • • • DGK PACKAGE (TOP VIEW) Adjustable Sense Voltage With Two External Resistors Adjustable Hysteresis of Sense Voltage Wide Operating Supply-Voltage Range: 1.8 V to 40 V Wide Operating Temperature Range: –40°C to 85°C Low Power Consumption: ICC = 0.6 mA Typ, VCC = 40 V Minimum External Components Now Available in MSOP (DGK) package RESET NC CT SENSE 1 8 2 7 3 6 4 5 VCC NC NC GND P, PS, OR PW PACKAGE (TOP VIEW) CT SENSE NC GND 1 8 2 7 3 6 4 5 RESET NC NC VCC NC – No internal connection DESCRIPTION/ORDERING INFORMATION The TL7700 is a bipolar integrated circuit designed for use as a reset controller in microcomputer and microprocessor systems. The SENSE voltage can be set to any value greater than 0.5 V using two external resistors. The hysteresis value of the sense voltage also can be set by the same resistors. The device includes a precision voltage reference, fast comparator, timing generator, and output driver, so it can generate a power-on reset signal in a digital system. The TL7700 has an internal 1.5-V temperature-compensated voltage reference from which all function blocks are supplied. Circuit function is very stable, with supply voltage in the 1.8-V to 40-V range. Minimum supply current allows use with ac line operation, portable battery operation, and automotive applications. ORDERING INFORMATION (1) PACKAGE (2) TA –40°C to 85°C (2) TOP-SIDE MARKING Tube of 50 TL7700CP TL7700CP SOP – PS Reel of 2000 TL7700CPSR T7700 Tube of 150 TL7700CPW Reel of 2000 TL7700CPWR Reel of 250 TL7700CDGKT Reel of 2500 TL7700CDGKR TSSOP – PW MSOP – DGK (1) ORDERABLE PART NUMBER PDIP – P T7700 9TS For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. 1 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. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 1999–2011, Texas Instruments Incorporated TL7700 SLVS220F – JULY 1999 – REVISED AUGUST 2011 www.ti.com FUNCTIONAL BLOCK DIAGRAM VCC Vs = 500 mV Typ RESET Reference Voltage + - SENSE + + - - ICT (A) High: On R Q S IS (A) GND CT A. ICT = 15 μA (Typ), Is = 2.5 μA (Typ) TERMINAL FUNCTIONS TERMINAL NAME CT GND DESCRIPTION NO. P, PS, PW 1 DGK 3 Timing capacitor connection. This terminal sets the RESET output pulse duration (tpo). It is connected internally to a 15-μA constant-current source. There is a limit on the switching speed of internal elements; even if CT is set to 0, response speeds remain at approximately 5 to 10 μs. If CT is open, the device can be used as an adjustable-threshold noninverting comparator. If CT is low, the internal output-stage comparator is active, and the RESET output transistor is on. An external voltage must not be applied to this terminal due to the internal structure of the device. Therefore, drive the device using an open-collector transistor, FET, or 3-state buffer (in the low-level or high-impedance state). Ground. Keep this terminal as low impedance to reduce circuit noise. 4 5 3, 6, 7 2, 6, 7 RESET 8 1 Reset output. This terminal can be connected directly to a system that resets in the active-low state. A pullup resistor usually is required because the output is an npn open-collector transistor. An additional transistor should be connected when the active-high reset or higher output current is required. SENSE 2 4 Voltage sense. This terminal has a threshold level of 500 mV. The sense voltage and hysteresis can be set at the same time when the two voltage-dividing resistors are connected. The reference voltage is temperature compensated to inhibit temperature drift in the threshold voltage within the operating temperature range. VCC 5 8 Power supply. This terminal is used in an operating-voltage range of 1.8 V to 40 V. NC 2 No internal connection Copyright © 1999–2011, Texas Instruments Incorporated TL7700 SLVS220F – JULY 1999 – REVISED AUGUST 2011 www.ti.com ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) VCC Supply voltage (2) Vs Sense input voltage range VOH Output voltage (off state) 41 V IOL Output current (on state) 5 mA 41 V –0.3 V to 41 V P package θJA Package thermal impedance (3) (4) TJ Operating virtual-junction temperature Tstg Storage temperature range (1) (2) (3) (4) 85°C/W PS package 95°C/W PW package 149°C/W DGK package 172°C/W 150°C –65°C to 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. All voltage values are with respect to the network ground terminal. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability. The package thermal impedance is calculated in accordance with JESD 51-7. RECOMMENDED OPERATING CONDITIONS VCC Supply voltage IOL Low-level output current TA Operating free-air temperature MIN MAX 1.8 40 UNIT V 3 mA –40 85 °C ELECTRICAL CHARACTERISTICS VCC = 3 V (unless otherwise noted) PARAMETER TEST CONDITIONS TA MIN TYP MAX 25°C 495 500 505 –40°C to 85°C 490 Vs SENSE input voltage Is SENSE input current Vs = 0.4 V ICC Supply current VCC = 40 V, Vs = 0.6 V, No load 25°C IOL = 1.5 mA 25°C 0.4 IOL = 3 mA 25°C 0.8 25°C –40°C to 85°C VOL Low-level output voltage IOH High-level output current VOH = 40 V, Vs = 0.6 V ICT Timing-capacitor charge current Vs = 0.6 V 2 510 2.5 1.5 0.6 –40°C to 85°C 25°C 3 3.5 1 UNIT mV μA mA V 1 μA 11 15 19 μA MIN TYP MAX 1 1.5 ms SWITCHING CHARACTERISTICS VCC = 3 V, TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS UNIT tpi SENSE pulse duration CT = 0.01 μF 2 tpo Output pulse duration CT = 0.01 μF 0.5 tr Output rise time CT = 0.01 μF, RL = 2.2 kΩ, CL = 100 pF 15 μs tf Output fall time CT = 0.01 μF, RL = 2.2 kΩ, CL = 100 pF 0.5 μs tpd Propagation delay time, SENSE to output CT = 0.01 μF 10 μs Copyright © 1999–2011, Texas Instruments Incorporated μs 3 TL7700 SLVS220F – JULY 1999 – REVISED AUGUST 2011 www.ti.com PARAMETER MEASUREMENT INFORMATION − A + VCC Vs SENSE 0.6 V VCC GND Figure 1. VCC vs ICC Measurement Circuit VCC Vs CT SENSE VCC + 0.6 V GND A − Figure 2. VCC vs ICT Measurement Circuit Test Point VCC RESET Vs 3V SENSE CT 0.4 V GND 0.01 µF Figure 3. IOL vs VOL Measurement Circuit 4 Copyright © 1999–2011, Texas Instruments Incorporated TL7700 SLVS220F – JULY 1999 – REVISED AUGUST 2011 www.ti.com PARAMETER MEASUREMENT INFORMATION (continued) 2.2 kΩ VCC Test Point RESET + A − Vs VCC SENSE CT Vs GND 0.01 µF Figure 4. Vs, Is Characteristics Measurement Circuit 2.2 kΩ VCC Test Point RESET Vs 3V SENSE CT GND 100 pF Ct Figure 5. Switching Characteristics Measurement Circuit Copyright © 1999–2011, Texas Instruments Incorporated 5 TL7700 SLVS220F – JULY 1999 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS Data at high and low temperatures are applicable only within the recommended operating conditions. SUPPLY CURRENT vs SUPPLY VOLTAGE TIMING-CAPACITOR CHARGE CURRENT vs SUPPLY VOLTAGE 16 Timing-Capacitor Charge Current − µA I CC − Supply Current − mA 1.2 1.0 0.8 TA = 85°C TA = 25°C TA = −40°C 0.6 0.4 0.2 TA = −40°C 15 14 TA = 25°C 13 TA = 85°C 12 11 10 0 0 10 20 30 40 50 0 60 10 20 Figure 6. 60 506 TA = 25°C Vs = 500.8 mV 504 Vs − Sense Input Voltage − mV 1.0 TA = 85°C 0.8 TA = 25°C 0.6 TA = −40°C 0.4 50 SENSE INPUT VOLTAGE vs TEMPERATURE 1.2 VOL − Low-Level Output Voltage − V 40 Figure 7. VOL vs IOL 0.2 502 500 498 496 TA = 25°C Vs = 498.3 mV 494 492 490 0 0 1 2 3 4 5 IOL − Low-Level Output Current − mA Figure 8. 6 30 VCC − Supply Voltage − V VCC − Supply Voltage − V 6 488 −75 −50 −25 0 25 50 75 100 125 150 TA − Free-Air Temperature − °C Figure 9. Copyright © 1999–2011, Texas Instruments Incorporated TL7700 SLVS220F – JULY 1999 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) Data at high and low temperatures are applicable only within the recommended operating conditions. SENSE INPUT CURRENT vs SENSE INPUT VOLTAGE 3.4 3.5 3.2 3.0 I s − Sense Input Current − µ A I s − Sense Input Current − µ A SENSE INPUT CURRENT vs TEMPERATURE 3.0 2.8 2.6 2.4 2.2 2.0 1.8 2.5 2.0 1.5 1.0 0.5 0 −0.5 1.6 −75 −50 −25 0 25 50 75 100 125 150 −1.0 0 TA − Free-Air Temperature − °C 0.1 0.2 0.3 0.4 0.5 0.6 1.0 10 Figure 10. Figure 11. OUTPUT PULSE DURATION vs TIMING CAPACITOR 109 t po − Output Pulse Duration − µ s 40 Vs − Sense Input Voltage − V 108 107 106 105 104 103 102 101 1 1 101 102 103 104 105 106 107 108 109 Ct − Timing Capacitor − pF Figure 12. Copyright © 1999–2011, Texas Instruments Incorporated 7 TL7700 SLVS220F – JULY 1999 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) Data at high and low temperatures are applicable only within the recommended operating conditions. Test Point 1 VCC Test Point 2 RESET Vs SENSE 5V CT 30 kΩ GND 100 pF 510 pF Y-Axis (TP1) = 1 V/Division Y-Axis (TP2) = 2 V/Division 2.2 kΩ 240 kΩ TP1 TP2 X-Axis = 0.2 ms/Division Figure 13. VCC vs Output Test Circuit 1 Figure 14. VCC vs Output Waveform 1 2.2 kΩ 240 kΩ VCC RESET Vs Test Point 2 SENSE 5V CT 30 kΩ GND 100 pF Y-Axis (TP1) = 1 V/Division Y-Axis (TP2) = 2 V/Division Test Point 1 TP1 TP2 510 pF X-Axis = 0.2 ms/Division Figure 15. VCC vs Output Test Circuit 2 8 Figure 16. VCC vs Output Waveform 2 Copyright © 1999–2011, Texas Instruments Incorporated TL7700 SLVS220F – JULY 1999 – REVISED AUGUST 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) Data at high and low temperatures are applicable only within the recommended operating conditions. Test Point 1 2.2 kΩ VCC RESET Vs Test Point 2 SENSE CT 30 kΩ GND 100 pF TP1 Y-Axis (TP1) = 1 V/Division Y-Axis (TP2) = 2 V/Division 240 kΩ TP2 510 pF X-Axis = 0.2 ms/Division Figure 17. VCC vs Output Test Circuit 3 Copyright © 1999–2011, Texas Instruments Incorporated Figure 18. VCC vs Output Waveform 3 9 TL7700 SLVS220F – JULY 1999 – REVISED AUGUST 2011 www.ti.com DETAILED DESCRIPTION Sense-Voltage Setting The SENSE terminal input voltage, Vs, of the TL7700 typically is 500 mV. By using two external resistors, the circuit designer can obtain any sense voltage over 500 mV. In Figure 19, the sensing voltage, Vs', is calculated as: Vs' = Vs × (R1 + R2)/R2 Where: Vs = 500 mV typ at TA = 25°C At room temperature, Vs has a variation of 500 mV ± 5 mV. In the basic circuit shown in Figure 19, variations of [±5 ± (R1 + R2)/R2] mV are superimposed on Vs. VCC RL VCC R1 RESET RESET Vs SENSE CT R2 GND Ct GND Figure 19. Sense-Voltage Hysteresis Setting If the sense voltage (Vs') does not have hysteresis in it, and the voltage on the sensing line contains ripples, the resetting of TL7700 is unstable. Hysteresis is added to the sense voltage to prevent such problems. As shown in Figure 20, the hysteresis (Vhys) is added, and the value is determined as: Vhys = Is × R1 Where: Is = 2.5 μA typ at TA = 25°C At room temperature, Is has variations of 2.5 mA ± 0.5 mA. Therefore, in the circuit shown in Figure 19, Vhys has variations of (±0.5 × R1) mV. In circuit design, it is necessary to consider the voltage-dividing resistor tolerance and temperature coefficient in addition to variations in Vs and Vhys. 10 Copyright © 1999–2011, Texas Instruments Incorporated TL7700 SLVS220F – JULY 1999 – REVISED AUGUST 2011 www.ti.com VCC Vhys Vs’ 1.5 V T RESET tpo tpo T A. The sense voltage, Vs', is different from the SENSE terminal input voltage, Vs. Vs normally is 500 mV for triggering. Figure 20. VCC-RESET Timing Chart Output Pulse-Duration Setting Constant-current charging starts on the timing capacitor when the sensing-line voltage reaches the TL7700 sense voltage. When the capacitor voltage exceeds the threshold level of the output drive comparator, RESET changes from a low to a high level. The output pulse duration is the time between the point when the sense-pin voltage exceeds the threshold level and the point when the RESET output changes from a low level to a high level. When the TL7700 is used for system power-on reset, the output pulse duration, tpo, must be set longer than the power rise time. The value of tpo is: tpo = Ct × 105 seconds Where: Ct is the timing capacitor in farads There is a limit on the device response speed. Even if Ct = 0, tpo is not 0, but approximately 5 μs to 10 μs. Therefore, when the TL7700 is used as a comparator with hysteresis without connecting Ct, switching speeds (tr/tf, tpo/tpd, etc.) must be considered. Copyright © 1999–2011, Texas Instruments Incorporated 11 PACKAGE OPTION ADDENDUM www.ti.com 30-Jul-2011 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish MSL Peak Temp TL7700CDGKR ACTIVE MSOP DGK 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TL7700CDGKRG4 ACTIVE MSOP DGK 8 2500 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TL7700CDGKT ACTIVE MSOP DGK 8 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TL7700CDGKTG4 ACTIVE MSOP DGK 8 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TL7700CP ACTIVE PDIP P 8 50 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type CU NIPDAU N / A for Pkg Type TL7700CPE4 ACTIVE PDIP P 8 50 Pb-Free (RoHS) TL7700CPSR ACTIVE SO PS 8 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TL7700CPSRG4 ACTIVE SO PS 8 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TL7700CPW ACTIVE TSSOP PW 8 150 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TL7700CPWE4 ACTIVE TSSOP PW 8 150 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TL7700CPWG4 ACTIVE TSSOP PW 8 150 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TL7700CPWR ACTIVE TSSOP PW 8 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TL7700CPWRE4 ACTIVE TSSOP PW 8 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM TL7700CPWRG4 ACTIVE TSSOP PW 8 2000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM (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. Addendum-Page 1 (3) Samples (Requires Login) PACKAGE OPTION ADDENDUM www.ti.com 30-Jul-2011 (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. 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. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. 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Addendum-Page 2 PACKAGE MATERIALS INFORMATION www.ti.com 26-Jun-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing TL7700CDGKR MSOP DGK 8 TL7700CDGKT MSOP DGK TL7700CPSR SO PS TL7700CPWR TSSOP TL7700CPWRG4 TSSOP SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 8.0 12.0 Q1 2500 330.0 12.4 5.3 3.4 1.4 8 250 177.8 12.4 5.3 3.4 1.4 8.0 12.0 Q1 8 2000 330.0 16.4 8.2 6.6 2.5 12.0 16.0 Q1 PW 8 2000 330.0 12.4 7.0 3.6 1.6 8.0 12.0 Q1 PW 8 2000 330.0 12.4 7.0 3.6 1.6 8.0 12.0 Q1 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 26-Jun-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TL7700CDGKR MSOP DGK 8 2500 358.0 335.0 35.0 TL7700CDGKT MSOP DGK 8 250 358.0 335.0 35.0 TL7700CPSR SO PS 8 2000 346.0 346.0 33.0 TL7700CPWR TSSOP PW 8 2000 346.0 346.0 29.0 TL7700CPWRG4 TSSOP PW 8 2000 346.0 346.0 29.0 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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