SLVS220C − JULY 1999 − REVISED NOVEMBER 2004 D Adjustable Sense Voltage With Two D D D D D P, PS, OR PW PACKAGE (TOP VIEW) 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 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 −40°C to 85°C ORDERABLE PART NUMBER PACKAGE† TA TOP-SIDE MARKING PDIP (P) Tube of 50 TL7700CP TL7700CP SOP (PS) Reel of 2000 TL7700CPSR T7700 Tube of 150 TL7700CPW Reel of 2000 TL7700CPWR TSSOP (PW) T7700 † Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. 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. Copyright 2004, Texas Instruments Incorporated !"# $% $ ! ! & ' $$ ()% $ !* $ #) #$ * ## !% POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SLVS220C − JULY 1999 − REVISED NOVEMBER 2004 functional block diagram VCC Vs = 500 mV TYP RESET Reference Voltage + − SENSE + + − − ICT† High: On R Q S IS† GND †ICT = 15 µA TYP; Is = 2.5 µA TYP CT Terminal Functions TERMINAL NAME CT 1 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). GND 4 Ground. Keep this terminal as low impedance to reduce circuit noise. NC 2 DESCRIPTION NO. 3, 6, 7 No internal connection RESET 8 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 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 Power supply. This terminal is used in an operating-voltage range of 1.8 V to 40 V. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SLVS220C − JULY 1999 − REVISED NOVEMBER 2004 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 V Sense input voltage range, Vs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 41 V Output voltage, VOH (off state) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 V Output current, IOL (on state) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 mA Package thermal impedance, θJA (see Notes 2 and 3): P package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85°C/W PS package . . . . . . . . . . . . . . . . . . . . . . . . . . . 95°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . 149°C/W Operating virtual junction temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −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. NOTES: 1. All voltage values are with respect to the network ground terminal. 2. 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. 3. The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions VCC IOL Supply voltage TA Operating free-air temperature MIN MAX 1.8 40 V 3 mA −40 85 °C MIN TYP MAX 495 500 505 Low-level output current UNIT electrical characteristics, VCC = 3 V, TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS Vs SENSE input voltage Is SENSE input current Vs = 0.4 V ICC Supply current VCC = 40 V, IOL = 1.5 mA TA = −40°C to 85°C 490 2 VOL Low-level output voltage IOH ICT High-level output current IOL = 3 mA VOH = 40 V, Timing-capacitor charge current Vs = 0.6 V TA = −40°C to 85°C Vs = 0.6 V, No load 510 2.5 1.5 3 3.5 0.6 1 UNIT mV A µA mA 0.4 0.8 Vs = 0.6 V, V 1 µA 11 15 19 µA MIN TYP MAX 1 1.5 ms TA = −40°C to 85°C switching characteristics, VCC = 3 V, TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS UNIT tpi tpo SENSE pulse duration CT = 0.01 µF 2 Output pulse duration CT = 0.01 µF 0.5 tr tf Output rise time CT = 0.01 µF, RL = 2.2 kΩ, CL = 100 pF 15 µs 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 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 µs 3 SLVS220C − JULY 1999 − REVISED NOVEMBER 2004 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 A − GND Figure 2. VCC vs ICT Test Point VCC RESET Vs 3V SENSE CT 0.4 V GND 0.01 µF Figure 3. IOL vs VOL 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SLVS220C − JULY 1999 − REVISED NOVEMBER 2004 PARAMETER MEASUREMENT INFORMATION 2.2 kΩ VCC Test Point RESET + A − Vs VCC SENSE CT Vs GND 0.01 µF Figure 4. VS, IS Characteristics 2.2 kΩ VCC Test Point RESET Vs 3V SENSE CT GND 100 pF Ct Figure 5. Switching Characteristics POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5 SLVS220C − JULY 1999 − REVISED NOVEMBER 2004 SUPPLY CURRENT vs SUPPLY VOLTAGE 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 0 0 10 20 30 40 50 60 Timing-Capacitor Charge Current Supply − mV TYPICAL CHARACTERISTICS† TIMING-CAPACITOR CHARGE CURRENT vs SUPPLY VOLTAGE 16 TA = −40°C 15 14 TA = 25°C 13 TA = 85°C 12 11 10 0 VCC − Supply Voltage − V 10 20 50 60 Figure 7 VOL vs IOL SENSE INPUT VOLTAGE vs TEMPERATURE 506 1.2 TA = 25°C Vs = 500.8 mV 504 1.0 Vs − Sense Input Voltage − mV VOL − Low-Level Output Voltage − V 40 VCC − Supply Voltage − V Figure 6 TA = 85°C 0.8 TA = 25°C 0.6 TA = −40°C 0.4 0.2 502 500 498 496 TA = 25°C Vs = 498.3 mV 494 492 490 0 0 1 2 3 4 5 6 488 −75 −50 −25 0 25 Figure 9 Figure 8 † Data at high and low temperatures are applicable only within the recommended operating conditions. POST OFFICE BOX 655303 50 75 100 125 150 TA − Free-Air Temperature − °C IOL − Low-Level Output Current − mA 6 30 • DALLAS, TEXAS 75265 SLVS220C − JULY 1999 − REVISED NOVEMBER 2004 TYPICAL CHARACTERISTICS† 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 2.5 2.0 1.5 1.0 0.5 0 −0.5 1.8 1.6 −75 −50 −25 −1.0 0 25 50 0 75 100 125 150 TA − Free-Air Temperature − °C 0.1 0.2 0.3 0.4 0.5 0.6 1.0 10 40 Vs − Sense Input Voltage − V Figure 10 Figure 11 OUTPUT PULSE DURATION vs TIMING CAPACITOR t po − Output Pulse Duration − µ s 109 108 107 106 105 104 103 102 101 1 1 101 102 103 104 105 106 107 108 109 Ct − Timing Capacitor − pF Figure 12 † Data at high and low temperatures are applicable only within the recommended operating conditions. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 SLVS220C − JULY 1999 − REVISED NOVEMBER 2004 TYPICAL CHARACTERISTICS 2.2 kΩ 240 kΩ VCC Test Point 2 RESET Vs SENSE 6V CT 30 kΩ TP1 Y-Axis (TP1) = 1 V/Division Y-Axis (TP2) = 2 V/Division Test Point 1 TP2 GND 100 pF 510 pF X-Axis = 0.2 ms/Division Test Point 1 2.2 kΩ 240 kΩ VCC RESET Vs Test Point 2 SENSE 6V CT 30 kΩ Figure 14. VCC vs Output Waveform 1 TP1 Y-Axis (TP1) = 1 V/Division Y-Axis (TP2) = 2 V/Division Figure 13. VCC vs Output Test Circuit 1 TP2 GND 100 pF 510 pF X-Axis = 0.2 ms/Division Figure 15. VCC vs Output Test Circuit 2 8 POST OFFICE BOX 655303 Figure 16. VCC vs Output Waveform 2 • DALLAS, TEXAS 75265 SLVS220C − JULY 1999 − REVISED NOVEMBER 2004 TYPICAL CHARACTERISTICS 2.2 kΩ 240 kΩ VCC Test Point 2 RESET Vs SENSE CT 30 kΩ TP1 Y-Axis (TP1) = 1 V/Division Y-Axis (TP2) = 2 V/Division Test Point 1 TP2 GND 100 pF 510 pF X-Axis = 0.2 ms/Division Figure 18. VCC vs Output Waveform 3 Figure 17. VCC vs Output Test Circuit 3 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, typically 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 Vs RESET SENSE CT R2 GND Ct GND Figure 19 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 9 SLVS220C − JULY 1999 − REVISED NOVEMBER 2004 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 will be 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, typically at TA = 25°C At room temperature, Is has variations of 2.5 µA ± 0.5 µA. Therefore, in the circuit shown in Figure 19, Vhys has variations of (±0.5 × R1) µV. In circuit design, it is necessary to consider the voltage-dividing resistor tolerance and temperature coefficient in addition to variations in Vs and Vhys. VCC Vhys Vs’ 1.5 V T RESET tpo tpo T NOTE 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. 10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 PACKAGE OPTION ADDENDUM www.ti.com 24-May-2007 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty TL7700CP ACTIVE PDIP P 8 50 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type TL7700CPE4 ACTIVE PDIP P 8 50 Pb-Free (RoHS) CU NIPDAU N / A for Pkg Type 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 Lead/Ball Finish MSL Peak Temp (3) (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. 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. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com 24-Sep-2007 TAPE AND REEL BOX INFORMATION Device Package Pins Site Reel Diameter (mm) Reel Width (mm) A0 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant TL7700CPSR PS 8 SITE 41 330 16 8.2 6.6 2.5 12 16 Q1 TL7700CPWR PW 8 SITE 41 330 12 7.0 3.6 1.6 8 12 Q1 Pack Materials-Page 1 PACKAGE MATERIALS INFORMATION www.ti.com Device 24-Sep-2007 Package Pins Site Length (mm) Width (mm) Height (mm) TL7700CPSR PS 8 SITE 41 346.0 346.0 0.0 TL7700CPWR PW 8 SITE 41 346.0 346.0 0.0 Pack Materials-Page 2 MECHANICAL DATA MPDI001A – JANUARY 1995 – REVISED JUNE 1999 P (R-PDIP-T8) PLASTIC DUAL-IN-LINE 0.400 (10,60) 0.355 (9,02) 8 5 0.260 (6,60) 0.240 (6,10) 1 4 0.070 (1,78) MAX 0.325 (8,26) 0.300 (7,62) 0.020 (0,51) MIN 0.015 (0,38) Gage Plane 0.200 (5,08) MAX Seating Plane 0.010 (0,25) NOM 0.125 (3,18) MIN 0.100 (2,54) 0.021 (0,53) 0.015 (0,38) 0.430 (10,92) MAX 0.010 (0,25) M 4040082/D 05/98 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice. C. Falls within JEDEC MS-001 For the latest package information, go to http://www.ti.com/sc/docs/package/pkg_info.htm POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 MECHANICAL DATA MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999 PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE 14 PINS SHOWN 0,30 0,19 0,65 14 0,10 M 8 0,15 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 1 7 0°– 8° A 0,75 0,50 Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,10 8 14 16 20 24 28 A MAX 3,10 5,10 5,10 6,60 7,90 9,80 A MIN 2,90 4,90 4,90 6,40 7,70 9,60 DIM 4040064/F 01/97 NOTES: A. B. C. D. All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion not to exceed 0,15. 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