TPS3806J20, TPS3806I33 DUAL VOLTAGE DETECTOR WITH ADJUSTABLE HYSTERESIS SLVS393 – JULY 2001 D Dual Voltage Detector With Adjustable D D D D D TPS3806 DBV PACKAGE (TOP VIEW) Hysteresis 3.3-V/Adjustable and 2-V/Adjustable Assured Reset at VDD = 0.8 V Supply Current: 3 µA Typical at VDD = 3.3 V Independent Open-Drain Reset Outputs Temperature Range . . . –40°C to 85°C Six-Pin SOT-23 Package description RSTSENSE 1 6 HSENSE GND 2 5 LSENSE RESET 3 4 VDD typical operating circuit The TPS3806 integrates two independent voltage detectors for battery voltage monitoring. During power-on, RESET and RSTSENSE are asserted when supply voltage VDD or the voltage at LSENSE input become higher than 0.8 V. Thereafter, the supervisory circuit monitors VDD and LSENSE, keeping RESET and RSTSENSE active as long as VDD and LSENSE remain below the threshold voltage VIT. As soon as VDD or LSENSE rise above the threshold voltage VIT, RESET or RSTSENSE is deasserted, respectively. The TPS3806 device has a fixed-sense threshold voltage VIT set by an internal voltage divider at VDD and an adjustable second-LSENSE input. In addition, an upper voltage threshold can be set at HSENSE to allow a wide adjustable hysteresis window. R4 VDD RESET TPS3806I33 R1 3.6 V Li-lon Cell R5 LSENSE RSTSENSE HSENSE GND R2 R3 The devices are available in a 6-pin SOT-23 package. The TPS3806 device is characterized for operation over a temperature range of –40°C to 85°C. PACKAGE INFORMATION THRESHOLD VOLTAGE TA –40_C 40_C to 85_C DEVICE NAME TPS3806J20DBVR† TPS3806I33DBVR† TPS3806J20DBVT‡ TPS3806I33DBVT‡ SENSE MARKING VDD 1.8 V 1.207 V PGQI 3V 1.207 V PGPI † The DBVR passive indicates tape and reel containing 3000 parts. ‡ The DBVT passive indicates tape and reel containing 250 parts. ordering information TPS380 6 I 33 DBV R Reel Package Nominal Supply Voltage Nominal Threshold Voltage Functionality Family 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 2001, Texas Instruments Incorporated PRODUCTION DATA information is 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. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 TPS3806J20, TPS3806I33 DUAL VOLTAGE DETECTOR WITH ADJUSTABLE HYSTERESIS SLVS393 – JULY 2001 Function/Truth Tables TPS3806 VDD > VIT 0 RESET LSENSE > VIT L 0 RSTSENSE L 1 H 1 H functional block diagram TPS3806 LSENSE _ HSENSE RSTSENSE + R1 _ VDD RESET + R2 GND Reference Voltage of 1.207 V detailed description operation The TPS3806 is used for monitoring battery voltage and asserting RESET when battery gets discharged below a certain threshold voltage. The battery voltage is monitored by a comparator via an external resistor divider. When the voltage at the LSENSE input drops below the internal reference voltage the RSTSENSE output pulls low. The output remains low until the battery is replaced, or recharged above a second higher trip-point,set at HSENSE. A second voltage can be monitored at VDD. The independent RESET output pulls low when the voltage at VDD drops below the fixed threshold voltage. Because the TPS3806 outputs are open-drain MOSFETs, most applications may require a pullup resistor. programming the threshold voltage levels The low-voltage threshold at LSENSE is calculated as follows: V (LSENSE) +V ) R2 ) R3Ǔ ǒR1 R2 ) R3 ref where Vref = 1.207 V The high-voltage threshold at HSENSE is calculated as follows: V (HSENSE) +V ) R3Ǔ ǒR1 ) R2 R3 ref where Vref = 1.207 V To minimize battery current draw it is recommended to use 1-MΩ as the total resistor value R(tot) = R1 + R2 + R3. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TPS3806J20, TPS3806I33 DUAL VOLTAGE DETECTOR WITH ADJUSTABLE HYSTERESIS SLVS393 – JULY 2001 timing requirements VDD VIT(HSENSE) VIT(LSENSE) VIT,VDD+Vhys VIT(VDD) 0.8 V RSTSENSE RESET = Undefined Terminal Functions TERMINAL NAME NO. I/O DESCRIPTION GND 2 I Ground HSENSE 6 I Adjustable hysteresis input LSENSE 5 I Adjustable sense input RESET 3 O Active-low open drain reset output (from VDD) RSTSENSE 1 O Active-low open-drain reset output (from LSENSE) VDD 4 I Input supply voltage and fixed sense input POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3 TPS3806J20, TPS3806I33 DUAL VOLTAGE DETECTOR WITH ADJUSTABLE HYSTERESIS SLVS393 – JULY 2001 absolute maximum ratings over operating free-air temperature (unless otherwise noted)† Supply voltage, VDD (see Note1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V All other pins (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 7 V Maximum low-output current, IOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 mA Maximum high-output current, IOH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –5 mA Input clamp current, IIK (VI<0 or VI>VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10 mA Output clamp current, IOK (VO<0 or VO>VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10 mA Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 85°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C Soldering temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°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. NOTE 1: All voltage values are with respect to GND. For reliable operation the device must not be continuously operated at 7 V for more than t=1000 h. DISSIPATION RATING TABLE PACKAGE TA <25°C POWER RATING DERATING FACTOR ABOVE TA = 25°C TA = 70°C POWER RATING TA = 85°C POWER RATING DBV 437 mW 3.5 mW/°C 280 mW 227 mW recommended operating conditions MIN Supply voltage, VDD Input voltage, VI Operating free-air temperature range, TA 4 MAX 6 V 0 VDD+0.3 85 °C –40 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 UNIT 1.3 V TPS3806J20, TPS3806I33 DUAL VOLTAGE DETECTOR WITH ADJUSTABLE HYSTERESIS SLVS393 – JULY 2001 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VOL TEST CONDITIONS MAX UNIT Low-level Low level out output ut voltage 0.3 V Power-up reset voltage (see Note 2) VDD = 6 V, VDD ≥ 0.8 V, IOL = 3 mA IOL = 50 µA 0.2 V TPS3806J20 TA =25°C 25 C TPS3806I33 Negative going in Negative-going input ut threshold voltage (see Note 3) LSENSE TPS3806J20 TA = –40°C 40 C to 85°C 85 C TPS3806I33 1.198 1.207 1.216 1.787 1.8 1.813 2.978 3 3.022 1.183 1.207 1.231 1.764 1.8 1.836 2.94 3 3.06 1.2 V < VIT < 2.5 V 2.5 V < VIT < 3.5 V Vhys Hysteresis II Input current IOH High-level output current IDD TYP IOL = 1 mA IOL = 2 mA LSENSE VIT MIN VDD = 1.5 V, VDD = 3.3 V, LSENSE, HSENSE V 60 mV 90 –25 VDD = VIT + 0.2 V, VOH = VDD VDD = 3.3 V, Output unconnected Supply current V VDD = 6 V, Output unconnected VI = 0 V to VDD 25 nA 300 nA 3 5 4 6 Ci Input capacitance 1 NOTES: 2. The lowest supply voltage at which RESET becomes active. tr,VDD ≥ 15 µs/V 3. To ensure best stability of the threshold voltage, place a bypass capacitor (ceramic, 0.1 µF) near the supply terminals. µA A pF timing requirements at RL = 1 MΩ, CL = 50 pF, TA = –40°C to 85°C PARAMETER tw TEST CONDITIONS At VDD Pulse width At SENSE VIH = 1.05 1 05 x VIT, VIL = 0.95 0 95 x VIT MIN TYP MAX UNIT µss 55 5.5 switching characteristics at RL = 1 MΩ, CL = 50 pF, TA = –40°C to 85°C PARAMETER TEST CONDITIONS tPHL Pro agation (delay) time, Propagation high-to-low-level output VDD to RESET delay LSENSE to RSTSENSE delay tPLH Pro agation (delay) time, Propagation low-to-high-level output VDD to RESET delay HSENSE to RSTSENSE delay POST OFFICE BOX 655303 VIH = 1.05 x VIT, VIL = 0.95 x VIT • DALLAS, TEXAS 75265 MIN TYP MAX UNIT 5 100 µss 5 100 µss 5 TPS3806J20, TPS3806I33 DUAL VOLTAGE DETECTOR WITH ADJUSTABLE HYSTERESIS SLVS393 – JULY 2001 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs SUPPLY VOLTAGE LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 6 1.60 I DD – Supply Current – µ A 5 VOL – Low-Level Output Voltage – V V(HSENSE) < V(LSENSE) RESET = Open RSTSENSE = Open 4 3 85°C 25°C 2 0°C –40°C 1 VDD = 1.5 V V(SENSE) = Low 1.40 1.20 85°C 1.00 25°C 0.80 0°C 0.60 –40°C 0.40 0.20 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 0 6 0 1 VDD – Supply Voltage – V 2 Figure 1 3.5 VOL – Low-Level Output Voltage – V VDD = 1.5 V V(SENSE) = Low 0.45 VOL – Low-Level Output Voltage – V 5 LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 0.50 0.40 85°C 0.35 25°C 0.30 0°C 0.25 –40°C 0.20 0.15 0.10 0.05 VDD = 6 V V(SENSE) = Low 3 85°C 2.5 25°C 2 0°C –40°C 1.5 1 0.5 Expanded View 0 0 0.5 1 1.5 2 2.5 3 0 5 10 15 20 Figure 3 Figure 4 POST OFFICE BOX 655303 25 30 35 40 IOL – Low-Level Output Current – mA IOL – Low-Level Output Current – mA 6 4 Figure 2 LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 0 3 IOL – Low-Level Output Current – mA • DALLAS, TEXAS 75265 45 50 TPS3806J20, TPS3806I33 DUAL VOLTAGE DETECTOR WITH ADJUSTABLE HYSTERESIS SLVS393 – JULY 2001 LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 1 VDD = 6 V V(SENSE) = Low 85°C VOL – Low-Level Output Voltage – V 0.9 0.8 25°C 0.7 0°C 0.6 –40°C 0.5 0.4 0.3 0.2 Expanded View 0.1 0 0 2 4 6 8 10 12 14 16 18 20 IOL – Low-Level Output Current – mA VIT – Normalized Input Threshold Voltage VIT(TA) / VIT(25°C) TYPICAL CHARACTERISTICS NORMALIZED INPUT THRESHOLD VOLTAGE vs FREE-AIR TEMPERATURE AT VDD 1.005 RESET = 100 kΩ to VDD 1.004 1.003 1.002 1.001 1 0.999 0.998 0.997 0.996 0.995 –40 –20 Figure 5 40 60 80 MINIMUM PULSE DURATION AT LSENSE vs LSENSE THRESHOLD OVERDRIVE VOLTAGE 10 tw – Minimum Pulse Duration at LSENSE – µs 10 tw – Minimum Pulse Duration at VDD – µs 20 Figure 6 MINIMUM PULSE DURATION AT VDD vs VDD THRESHOLD OVERDRIVE VOLTAGE 9 8 7 6 5 4 3 2 1 0 0 TA – Free-Air Temperature at VDD – °C 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 VDD – Threshold Overdrive Voltage – V 9 8 7 6 5 4 3 2 1 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 LSENSE – Threshold Overdrive Voltage – V Figure 7 Figure 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 7 TPS3806J20, TPS3806I33 DUAL VOLTAGE DETECTOR WITH ADJUSTABLE HYSTERESIS SLVS393 – JULY 2001 MECHANICAL DATA DBV (R-PDSO-G6) PLASTIC SMALL-OUTLINE 0,95 6X 6 0,50 0,25 0,20 M 4 1,70 1,50 1 0,15 NOM 3,00 2,60 3 Gage Plane 3,00 2,80 0,25 0°–8° 0,55 0,35 Seating Plane 1,45 0,95 0,05 MIN 0,10 4073253-5/F 10/00 NOTES: A. B. C. D. 8 All linear dimensions are in millimeters. This drawing is subject to change without notice. Body dimensions do not include mold flash or protrusion. Leads 1, 2, 3 are wider than leads 4, 5, 6 for package orientation. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. 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