TS391 Low power single voltage comparator Features ■ Wide single supply voltage range or dual supplies +2V to +34V or ±1V to ±17V ■ Very low supply current (0.2mA) independent of supply voltage (1mW/comparator at +5V) ■ Low input bias current: 25nA typ. ■ Low input offset current: ±5nA typ. ■ Low input offset voltage: ±1mV typ. ■ Input common-mode voltage range includes ground ■ Low output saturation voltage: 250mV typ. (Io= 4mA) ■ Differential input voltage range equal to the supply voltage ■ L SOT23-5 (Plastic package) Pin connections (top view) Output 1 V CC 2 Inverting input 3 5 VCC+ TTL, DTL, ECL, CMOS compatible outputs 4 Non-inverting input Description These devices consist of a low power voltage comparator designed specifically to operate from a single supply over a wide range of voltages. Operation from split power supplies is also possible. This comparator also has a unique characteristic in that the input common-mode voltage range includes ground even though operated from a single power supply voltage. November 2007 Rev 3 1/8 www.st.com 8 Schematic diagram 1 TS391 Schematic diagram Figure 1. Schematic diagram VCC 3.5μA 100μA 3.5μA 100μA Non-inverting Input VCC VCC VO Inverting Input VCC 2/8 TS391 Absolute maximum ratings and operating conditions 2 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings (AMR) Symbol Parameter VCC Supply voltage Vid Differential input voltage Vi Input voltage Tj Rthja Value Unit ±18 or 34 V -±34 V -0.3 to +34 V Output short-circuit to ground(1) Infinite Maximum junction temperature 150 °C 250 °C/W 81 °C/W -65 to +150 °C Thermal resistance junction to ambient(2) Rthjc Thermal resistance junction to case Tstg Storage temperature range HBM: human body (2) model(3) ESD MM: machine model 300 V (4) 200 1. Short-circuits from the output to VCC+ can cause excessive heating and potential destruction. The maximum output current is approximately 20mA independent of the magnitude of VCC+. 2. Short-circuits can cause excessive heating. These values are typical. 3. Human body model: A 100pF capacitor is charged to the specified voltage, then discharged through a 1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating. 4. Machine model: A 200pF capacitor is charged to the specified voltage, then discharged directly between two pins of the device with no external series resistor (internal resistor < 5Ω). This is done for all couples of connected pin combinations while the other pins are floating. Table 2. Operation conditions Symbol Parameter Value Unit 2 to 34 ±1 to ±17 V VCC Supply voltage Vicm Input common mode voltage range (1) Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 0 to VCC+ -1.5 0 to VCC+ -2 V Toper Operating free air temperature range -40 to +125 °C 1. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3V. The upper end of the common-mode voltage range is VCC+ –1.5V, but either or both inputs can go to +30V without damage. 3/8 Electrical characteristics TS391 3 Electrical characteristics Table 3. VCC+ = +5V, VCC- = 0V, Tamb = 25°C (unless otherwise specified) Symbol Parameter Vio Input offset voltage (1) Iio Input offset current Iib Input bias current (2) Test conditions Min. Typ. Max. Unit 1 5 9 mV 5 50 150 nA 25 250 400 nA Tmin ≤ Tamb ≤ Tmax Tmin ≤ Tamb ≤ Tmax Tmin ≤ Tamb ≤ Tmax Avd Large signal voltage gain VCC+ = 15V, RL = 15kΩ, Vo = 1 to 11V ICC Supply current VCC+ = 5V, no load VCC+ = 30V, no load Vid Differential input voltage (3) Isink Output sink current Vid = -1V, VO = 1.5V + 50 200 0.2 0.5 6 V/mV 0.5 1.25 mA VCC+ V 16 mA VOL Low level output voltage Vid = 1V, VCC = VO = 30V Tmin ≤ Tamb ≤ Tmax 250 IOH High level output current Vid = 1V, VCC+ = VO = 30V Tmin ≤ Tamb ≤ Tmax 0.1 tre Small signal response time RL = 5.1kΩ to VCC+ (4) 1.3 µs trel Large signal response time Vi = TTL, Vref = +1.4V, RL = 5.1kΩ to VCC+ 300 ns 400 700 mV 1 nA µA 1. At output switch point, VO ≈ 1.4V, RS = 0Ω with VCC+ from 5V to 30V and over the full input common-mode range (0V to VCC+ -1.5V). 2. The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant, independent of the state of the output, so there is no loading charge on the reference or input lines. 3. Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode range, the comparator will provide a proper output state. The low input voltage state must not be less than –0.3V (or 0.3V below the negative power supply, if used). 4. The response time specified is for a 100mV input step with 5mV overdrive. For larger overdrive signals, 300ns can be obtained. 4/8 TS391 Electrical characteristics Supply current vs. supply voltage Figure 3. INPUT VOLTAGE (mV) OUTPUT VOLTAGE (V) Figure 2. 80 INPUT CURRENT (nA) Vi = 0V 9 R i = 10 Ω 60 Tamb = 0˚C Tamb = +25˚C 40 20 Tamb = +125˚C Tamb = +70˚C 0 10 20 30 SUPPLY VOLTAGE (V) Figure 6. 10 SATURATION VOLTAGE (V) Tamb = -55˚C 40 Input overdrive : 5mV 5V 5.1kΩ 20mV eI eo 100mV Tamb = +25˚C 0 Figure 5. OUTPUT VOLTAGE (V) Input current vs. supply voltage INPUT VOLTAGE (mV) Figure 4. 6 5 4 3 2 1 0 0 -50 -100 Response time for various input overdrives - negative transition 0.5 1 1.5 TIME (μs) 2 Response time for various input overdrives - positive transition 6 Input overdrive : 100mV 5 4 5mV 3 2 20mV 1 0 100 Tamb = +25˚C 50 0 0 0.5 1 1.5 TIME (μs) 5V 5.1k Ω eI eo 2 Output saturation voltage vs. output current 1 Out of saturation 10 0 Tamb = +125˚C 10 -1 Tamb = -55˚C 10 10 -2 Tamb = +25˚C -3 10 -2 10 -1 10 0 10 1 10 2 OUTPUT SINK CURRENT (mA) 5/8 Package information 4 TS391 Package information In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 7. SOT23-5L package mechanical drawing Table 4. SOT23-5L package mechanical data Dimensions Ref. Millimeters Min. Max. Min. Typ. Max. A 0.90 1.45 35.4 57.1 A1 0.00 0.15 0.00 5.9 A2 0.90 1.30 35.4 51.2 b 0.35 0.50 13.7 19.7 C 0.09 0.20 3.5 7.8 D 2.80 3.00 110.2 118.1 E 2.60 3.00 102.3 118.1 E1 1.50 1.75 59.0 68.8 e 0.95 37.4 e1 1.9 74.8 L 6/8 Typ. Mils 0.35 0.55 13.7 21.6 TS391 5 Ordering information Ordering information Table 5. Order codes Part number Temperature range Package TS391ILT Packaging SOT23-5L -40°C, +125°C TS391IYLT(1) Marking K511 SOT23-5L (Automotive grade) Tape & reel K510 1. Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC Q001 & Q 002 or equivalent are on-going. 6 Revision history Table 6. Document revision history Date Revision 22-Sep-2004 1 Initial release. 6-Jan-2006 2 PPAP reference inserted in the document. 3 Added values for Rthja, Rthjc and ESD in Table 1: Absolute maximum ratings (AMR). Added footnote for automotive grade order code in order codes table. Updated format. 21-Nov-2007 Changes 7/8 TS391 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. 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