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| TS391 Low Power Single Voltage Comparator 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 TTL, DTL, ECL, CMOS compatible outputs Inverting input 3 4 Non-inverting input Output V CC 1 5 + VCC 2 L SOT23-5 (Plastic Package) Pin connections (top view) 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. Order Codes Part Number TS391ILT -40C, +125C TS391IYLT SOT23-5L Tape & Reel K510 Temperature Range Package Packaging Marking K511 January 2006 Rev. 2 1/7 www.st.com 7 Typical Application Schematic TS391 1 Figure 1. Typical Application Schematic Typical application schematic VCC 3.5A 100A 3.5A 100A Non-inverting Input VCC Inverting Input VCC VO VCC 2/7 TS391 Absolute Maximum Ratings 2 Table 1. Symbol VCC Vid Vi Absolute Maximum Ratings Key parameters and their absolute maximum ratings Parameter Supply Voltage Differential Input Voltage Input Voltage Output Short-circuit to Ground Pd (1) Value 18 or 34 -34 -0.3 to +34 Infinite 500 -65 to +150 Unit V V V Power Dissipation (2) mW C Tstg Storage Temperature Range + 1. Short-circuits from the output to VCC can cause excessive heating and eventual destruction. The maximum output current is approximately 20mA independent of the magnitude of VCC +. 2. Tj = 150C, Tamb = 25C with Rthja = 250C/W for SOT23-5 package. Table 2. Symbol VCC Vicm Toper Operation conditions Parameter Supply Voltage Input Common Mode Voltage Range Operating Free Air Temperature Range Value 2 to 34 1 to 17 0 to VCC+ -1.5 -40 to +125 Unit V V C 3/7 Electrical Characteristics TS391 3 Table 3. Symbol Vio Iio Iib Avd Electrical Characteristics VCC+ = +5V, VCC- = 0V, Tamb = 25C (unless otherwise specified) Parameter Input Offset Voltage (1) Input Offset Current Input Bias Current (2) Large Signal Voltage Gain Supply Current Conditions Tmin. Tamb Tmax. 5 Tmin. Tamb Tmax. 25 Tmin. Tamb Tmax. VCC = 15V, RL = 15k, Vo = 1 to 11V VCC = 5V, no load VCC = 30V, no load Tmin. Tamb Tmax. 0 0 50 200 Min. Typ. 1 Max. 5 9 50 150 250 400 Unit mV nA nA V/mV ICC 0.2 0.5 0.5 1.25 VCC+ -1.5 VCC + -2 VCC+ mA Vicm Vid Isink VOL IOH tre trel Input Common Mode Voltage Range (3) Differential Input Voltage (4) Output Sink Current Low Level Output Voltage High Level Output Current Small Signal Response Time Large Signal Response Time V V mA Vid = -1V, VO = 1.5V Vid = 1V, VCC = VO = 30V Tmin. Tamb Tmax. Vid = 1V, VCC = VO = 30V Tmin. Tamb Tmax. RL = 5.1k to VCC+ (5) Vi = TTL, Vref = +1.4V, RL = 5.1k to VCC+ 6 16 250 0.1 1 1.3 300 400 700 mV nA A s ns 1. At output switch point, VO 1.4V, RS = 0 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 no loading charge exists on the reference or input lines. 3. 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. 4. 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). 5. The response time specified is for a 100mV input step with 5mV overdrive. For larger overdrive signals 300ns can be obtained. 4/7 TS391 Figure 2. Supply current vs. supply voltage Figure 3. Electrical Characteristics Response time for various input overdrives - negative transition OUTPUT VOLTAGE (V) INPUT VOLTAGE (mV) 6 5 4 3 2 1 0 0 -50 -100 Input overdrive : 5mV 20mV eI 5V 5.1k eo 100mV Tamb = +25C 0 0.5 1 1.5 TIME (s) 2 Figure 4. Input current vs. supply voltage Figure 5. Response time for various input overdrives - positive transition 80 Vi = 0V INPUT CURRENT (nA) 60 40 20 Tamb = +125C Tamb = +70C 0 10 20 30 SUPPLY VOLTAGE (V) 40 R i = 10 Tamb = 0C Tamb = +25C 9 OUTPUT VOLTAGE (V) Tamb = -55C INPUT VOLTAGE (mV) 6 Input overdrive : 100mV 5 4 5mV 3 2 20mV 1 0 100 Tamb = +25C 50 0 0 0.5 1 1.5 TIME (s) 5V 5.1k eI eo 2 Figure 6. Output saturation voltage vs. output current 10 1 SATURATION VOLTAGE (V) Out of saturation 10 10 10 10 0 Tamb = +125C -1 Tamb = -55C -2 Tamb = +25C -3 -2 -1 0 1 2 10 10 10 10 10 OUTPUT SINK CURRENT (mA) 5/7 Package Mechanical Data TS391 4 Package Mechanical Data In order to meet environmental requirements, ST offers these devices in ECOPACK(R) 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. SOT23-5L Package SOT23-5L MECHANICAL DATA mm. DIM. MIN. A A1 A2 b C D E E1 e e1 L 0.35 0.90 0.00 0.90 0.35 0.09 2.80 2.60 1.50 0 .95 1.9 0.55 13.7 TYP MAX. 1.45 0.15 1.30 0.50 0.20 3.00 3.00 1.75 MIN. 35.4 0.0 35.4 13.7 3.5 110.2 102.3 59.0 37.4 74.8 21.6 TYP. MAX. 57.1 5.9 51.2 19.7 7.8 118.1 118.1 68.8 mils 6/7 TS391 Revision history 5 Revision history Table 4. Date Sept. 2004 Jan. 2006 Document revision history Revision 1 2 Initial release. PPAP reference inserted in the document. Changes Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners (c) 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 7/7 |
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