TPS3806I33DBVTG4

TPS3806J20 TPS3806I33 www.ti.com SLVS393A – JULY 2001 – REVISED NOVEMBER 2004 Dual Voltage Detector with Adjustable Hysteresis FEATURES • • • • • • DESCRIPTION Dual Voltage Detector With Adjustable 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 6-Pin SOT-23 Package 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. 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. TPS3806 DBV PACKAGE (TOP VIEW) RSTSENSE 1 6 HSENSE GND 2 5 LSENSE RESET 3 4 VDD R4 VDD R1 3.6 V Li-lon Cell R5 RESET TPS3806I33 LSENSE RSTSENSE HSENSE GND R2 R3 Typical Operating Circuit 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 © 2001–2004, Texas Instruments Incorporated TPS3806J20 TPS3806I33 www.ti.com SLVS393A – JULY 2001 – REVISED NOVEMBER 2004 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. ORDERING INFORMATION (1) TA -40°C to +85°C (1) (2) (3) THRESHOLD VOLTAGE DEVICE NAME VDD SENSE MARKING TPS3806J20DBVR (2) TPS3806J20DBVT (3) 1.8 V 1.207 V PGQI TPS3806I33DBVR (2) TPS3806I33DBVT (3) 3V 1.207 V PGPI For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet or refer to our web site at www.ti.com. The DBVR passive indicates tape and reel containing 3000 parts. The DBVT passive indicates tape and reel containing 250 parts. TPS380 6 I 33 DBV R Reel Package Nominal Supply Voltage Nominal Threshold Voltage Functionality Family ABSOLUTE MAXIMUM RATINGS over operating free-air temperature range (unless otherwise noted) (1) Supply voltage, VDD TPS3806J20, TPS3806I33 UNIT 7 V (2) All other pins (2) Maximum low-output current, IOL Maximum high-output current, IOH -0.3 to 7 V 5 mA -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 to +85 °C Storage temperature range, Tstg -65 to +150 °C +260 °C Soldering temperature (1) (2) 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 GND. For reliable operation, the device must not be continuously operated at 7 V for more than t = 1000 h. DISSIPATION RATING TABLE 2 PACKAGE TA < 25°C 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 TPS3806J20 TPS3806I33 www.ti.com SLVS393A – JULY 2001 – REVISED NOVEMBER 2004 RECOMMENDED OPERATING CONDITIONS Supply voltage, VDD Input voltage, VI Operating free-air temperature range, TA MIN MAX UNIT 1.3 6 V 0 VDD + 0.3 V -40 +85 °C ELECTRICAL CHARACTERISTICS over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VDD = 1.5 V, IOL = 1 mA VOL Low-level output voltage VDD = 3.3 V, IOL = 2 mA 0.3 V 0.2 V VDD = 6 V, IOL = 3 mA VDD ≥ 0.8 V, IOL = 50 µA Power-up reset voltage (1) LSENSE TPS3806J20 VIT Negative-going input threshold voltage (2) TA = +25°C II Input current IOH High-level output current IDD Supply current Ci Input capacitance (1) (2) 1.216 1.787 1.8 1.813 2.978 3.0 3.022 LSENSE 1.188 1.207 1.226 1.772 1.8 1.828 TPS3806J20 TA = 0°C to +70°C TPS3806I33 2.952 3.0 3.048 LSENSE 1.183 1.207 1.231 1.764 1.8 1.836 2.94 3.0 3.06 TA = -40°C to +85°C TPS3806I33 Hysteresis 1.207 TPS3806I33 TPS3806J20 Vhys 1.198 1.2 V < VIT < 2.5 V 60 2.5 V < VIT < 3.5 V 90 LSENSE, HSENSE -25 VDD = VIT + 0.2 V, VOH = VDD V V V mV 25 nA 300 nA VDD = 3.3 V, Output unconnected 3 5 VDD = 6 V, Output unconnected 4 6 VI = 0 V to VDD 1 µA pF The lowest supply voltage at which RESET becomes active. tr,VDD ≥ 15 µs/V To ensure best stability of the threshold voltage, place a bypass capacitor (ceramic, 0.1 µF) near the supply terminals. SWITCHING CHARACTERISTICS at RL = 1 MΩ, CL = 50 pF, TA = -40°C to +85°C PARAMETER TEST CONDITIONS tPHL Propagation (delay) time, high-to-low-level output VDD to RESET delay tPLH Propagation (delay) time, low-to-high-level output VDD to RESET delay LSENSE to RSTSENSE delay MIN VIH = 1.05 x VIT, VIL = 0.95 x VIT HSENSE to RSTSENSE delay TYP MAX UNIT 5 100 µs 5 100 µs TIMING REQUIREMENTS at RL = 1 MΩ, CL = 50 pF, TA = -40°C to +85°C PARAMETER tw Pulse width TEST CONDITIONS At VDD At SENSE VIH = 1.05 x VIT, VIL = 0.95 x VIT MIN 5.5 TYP MAX UNIT µs 3 TPS3806J20 TPS3806I33 www.ti.com SLVS393A – JULY 2001 – REVISED NOVEMBER 2004 VDD VIT(HSENSE) VIT(LSENSE) VIT,VDD+Vhys VIT(VDD) 0.8 V RSTSENSE RESET = Undefined Table 1. 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 FUNCTION/TRUTH TABLE TPS3806 VDD > VIT 4 RESET LSENSE > VIT RSTSENSE 0 L 0 L 1 H 1 H TPS3806J20 TPS3806I33 www.ti.com SLVS393A – JULY 2001 – REVISED NOVEMBER 2004 FUNCTIONAL BLOCK DIAGRAM TPS3806 LSENSE _ HSENSE RSTSENSE + R1 _ VDD R2 RESET + GND Reference Voltage of 1.207 V Detailed Description Operation The TPS3806 is used for monitoring battery voltage and asserting RESET when a 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 pull-up resistor. Programming the Threshold Voltage Levels The low-voltage threshold at LSENSE is calculated according to Equation 1: R1
R2
R3 V V (LSENSE) ref R2
R3   (1) where Vref = 1.207 V The high-voltage threshold at HSENSE is calculated as shown in Equation 2: R1
R2
R3 V V (HSENSE) ref R3   (2) where Vref = 1.207 V To minimize battery current draw it is recommended to use 1-MΩ as the total resistor value R(tot), with R(tot) = R1 + R2 + R3. 5 TPS3806J20 TPS3806I33 www.ti.com SLVS393A – JULY 2001 – REVISED NOVEMBER 2004 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs SUPPLY VOLTAGE LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 6 1.60 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 VOL − Low-Level Output Voltage − V I DD − Supply Current − µ A 5 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 LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 5 3.5 0.40 85°C 0.35 25°C 0.30 0°C 0.25 VDD = 6 V V(SENSE) = Low 3 VOL − Low-Level Output Voltage − V VOL − Low-Level Output Voltage − V 4 Figure 2. VDD = 1.5 V V(SENSE) = Low 0.45 −40°C 0.20 0.15 0.10 0.05 85°C 2.5 25°C 2 0°C −40°C 1.5 1 0.5 Expanded View 0 0.5 1 1.5 2 2.5 IOL − Low-Level Output Current − mA Figure 3. 6 3 Figure 1. 0.50 0 2 IOL − Low-Level Output Current − mA 3 0 0 5 10 15 20 25 30 35 40 IOL − Low-Level Output Current − mA Figure 4. 45 50 TPS3806J20 TPS3806I33 www.ti.com SLVS393A – JULY 2001 – REVISED NOVEMBER 2004 TYPICAL CHARACTERISTICS (continued) NORMALIZED INPUT THRESHOLD VOLTAGE vs FREE-AIR TEMPERATURE AT VDD 1 VDD = 6 V V(SENSE) = Low VOL − Low-Level Output Voltage − V 0.9 85°C 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) LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT 1.003 1.002 1.001 1 0.999 0.998 0.997 0.996 0.995 −40 −20 0 20 40 60 80 TA − Free-Air Temperature at VDD − °C Figure 6. MINIMUM PULSE DURATION AT VDD vs VDD THRESHOLD OVERDRIVE VOLTAGE MINIMUM PULSE DURATION AT LSENSE vs LSENSE THRESHOLD OVERDRIVE VOLTAGE 10 tw − Minimum Pulse Duration at LSENSE − µs tw − Minimum Pulse Duration at VDD − µs RESET = 100 kΩ to VDD 1.004 Figure 5. 10 9 8 7 6 5 4 3 2 1 0 1.005 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 VDD − Threshold Overdrive Voltage − V Figure 7. 1 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 8. 7 PACKAGE OPTION ADDENDUM www.ti.com 10-Dec-2020 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) (4/5) (6) TPS3806I33DBVR ACTIVE SOT-23 DBV 6 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 PGPI TPS3806I33DBVRG4 ACTIVE SOT-23 DBV 6 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 PGPI TPS3806I33DBVT ACTIVE SOT-23 DBV 6 250 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 PGPI TPS3806J20DBVR ACTIVE SOT-23 DBV 6 3000 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 PGQI TPS3806J20DBVT ACTIVE SOT-23 DBV 6 250 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 PGQI (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