PDF LM26LV Data sheet ( Hoja de datos )

Número de pieza	LM26LV
Descripción	LLP-6 Factory Preset Temperature Switch and Temperature Sensor
Fabricantes	National Semiconductor
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No Preview Available ! July 2007 LM26LV 1.6 V, LLP-6 Factory Preset Temperature Switch and Temperature Sensor General Description The LM26LV is a low-voltage, precision, dual-output, low- power temperature switch and temperature sensor. The tem- perature trip point (TTRIP) can be preset at the factory to any temperature in the range of 0°C to 150°C in 1°C increments. Built-in temperature hysteresis (THYST) keeps the output sta- ble in an environment of temperature instability. In normal operation the LM26LV temperature switch outputs assert when the die temperature exceeds TTRIP. The temper- ature switch outputs will reset when the temperature falls below a temperature equal to (TTRIP − THYST). The OVERTEMP digital output, is active-high with a push-pull structure, while the OVERTEMP digital output, is active-low with an open-drain structure. An analog output, VTEMP, delivers an analog output voltage which is inversely proportional to the measured temperature. Driving the TRIP TEST input high: (1) causes the digital out- puts to be asserted for in-situ verification and, (2) causes the threshold voltage to appear at the VTEMP output pin, which could be used to verify the temperature trip point. The LM26LV's low minimum supply voltage makes it ideal for 1.8 Volt system designs. Its wide operating range, low supply current , and excellent accuracy provide a temperature switch solution for a wide range of commercial and industrial appli- cations. Applications ■ Cell phones ■ Wireless Transceivers ■ Digital Cameras ■ Personal Digital Assistants (PDA's) ■ Battery Management ■ Automotive ■ Disk Drives ■ Games ■ Appliances Features ■ Low 1.6V operation ■ Low quiescent current ■ Push-pull and open-drain temperature switch outputs ■ Wide trip point range of 0°C to 150°C ■ Very linear analog VTEMP temperature sensor output ■ VTEMP output short-circuit protected ■ Accurate over −50°C to 150°C temperature range ■ 2.2 mm by 2.5 mm (typ) LLP-6 package ■ Excellent power supply noise rejection Key Specifications ■ Supply Voltage ■ Supply Current ■ Accuracy, Trip Point Temperature ■ Accuracy, VTEMP ■ VTEMP Output Drive ■ Operating Temperature ■ Hysteresis Temperature 1.6V to 5.5V 8 μA (typ) 0°C to 150°C ±2.2°C 0°C to 150°C 0°C to 120°C −50°C to 0°C ±2.3°C ±2.2°C ±1.7°C ±100 μA −50°C to 150°C 4.5°C to 5.5°C Connection Diagram Typical Transfer Characteristic LLP-6 VTEMP Analog Voltage vs Die Temperature 20204701 Top View See NS Package Number SDB06A © 2007 National Semiconductor Corporation 202047 20204724 www.national.com 1 page Electrical Characteristics Unless otherwise noted, these specifications apply for +VDD = +1.6V to +5.5V. Boldface limits apply for TA = TJ = TMIN to TMAX ; all other limits TA = TJ = 25°C. Symbol Parameter Conditions Typical Limits Units (Note 6) (Note 7) (Limit) GENERAL SPECIFICATIONS IS Quiescent Power Supply Current 8 16 μA (max) Hysteresis 5.5 °C (max) 5 4.5 °C (Min) OVERTEMP DIGITAL OUTPUT ACTIVE HIGH, PUSH-PULL VDD ≥ 1.6V Source ≤ 340 μA VDD ≥ 2.0V Source ≤ 498 μA VOH Logic "1" Output Voltage VDD ≥ 3.3V Source ≤ 780 μA VDD ≥ 1.6V Source ≤ 600 μA VDD ≥ 2.0V Source ≤ 980 μA VDD ≥ 3.3V Source ≤ 1.6 mA VDD − 0.2V V (min) VDD − 0.45V V (min) BOTH OVERTEMP and OVERTEMP DIGITAL OUTPUTS VDD ≥ 1.6V Sink ≤ 385 μA VDD ≥ 2.0V Sink ≤ 500 μA VOL Logic "0" Output Voltage VDD ≥ 3.3V Sink ≤ 730 μA VDD ≥ 1.6V Sink ≤ 690 μA VDD ≥ 2.0V Sink ≤ 1.05 mA OVERTEMP DIGITAL OUTPUT VDD ≥ 3.3V Sink ≤ 1.62 mA ACTIVE LOW, OPEN DRAIN IOH Logic "1" Output Leakage TA = 30 °C Current (Note 12) TA = 150 °C VTEMP ANALOG TEMPERATURE SENSOR OUTPUT Gain 1: If Trip Point = 0 - 69°C VTEMP Sensor Gain Gain 2: If Trip Point = 70 - 109°C Gain 3: If Trip Point = 110 - 129°C Gain 4: If Trip Point = 130 - 150°C VTEMP Load Regulation (Note 10) Source ≤ 90 μA, (VDD − VTEMP) ≥ 200 mV Sink ≤ 100 μA, VTEMP ≥ 260 mV Source or Sink = 100 μA VDD Supply- to-VTEMP DC Line Regulation (Note 13) VDD = +1.6V to +5.5V CL VTEMP Output Load Capacitance TRIP TEST DIGITAL INPUT VIH Logic "1" Threshold Voltage VIL Logic "0" Threshold Voltage IIH Logic "1" Input Current IIL Logic "0" Input Current (Note 12) Without series resistor. See Section 4.2 0.2 V (max) 0.45 0.001 0.025 −5.1 −7.7 −10.3 −12.8 −0.1 0.1 1 0.29 74 −82 1100 1 μA (max) mV/°C mV/°C mV/°C mV/°C −1 mV (max) 1 mV (max) Ohm mV μV/V dB pF (max) 1.5 0.001 VDD− 0.5 0.5 2.5 1 V (min) V (max) μA (max) μA (max) 5 www.national.com 5 Page 29 913 1369 1825 2281 30 908 1361 1815 2268 31 903 1354 1804 2255 32 898 1346 1794 2242 33 892 1338 1784 2230 34 887 1331 1774 2217 35 882 1323 1763 2204 36 877 1315 1753 2191 37 872 1307 1743 2178 38 867 1300 1732 2165 39 862 1292 1722 2152 40 856 1284 1712 2139 41 851 1276 1701 2127 42 846 1269 1691 2114 43 841 1261 1681 2101 44 836 1253 1670 2088 45 831 1245 1660 2075 46 825 1238 1650 2062 47 820 1230 1639 2049 48 815 1222 1629 2036 49 810 1214 1619 2023 50 805 1207 1608 2010 51 800 1199 1598 1997 52 794 1191 1588 1984 53 789 1183 1577 1971 54 784 1176 1567 1958 55 779 1168 1557 1946 56 774 1160 1546 1933 57 769 1152 1536 1920 58 763 1144 1525 1907 59 758 1137 1515 1894 60 753 1129 1505 1881 61 748 1121 1494 1868 62 743 1113 1484 1855 63 737 1105 1473 1842 64 732 1098 1463 1829 65 727 1090 1453 1816 66 722 1082 1442 1803 67 717 1074 1432 1790 68 711 1066 1421 1776 69 706 1059 1411 1763 70 701 1051 1400 1750 71 696 1043 1390 1737 72 690 1035 1380 1724 73 685 1027 1369 1711 74 680 1019 1359 1698 75 675 1012 1348 1685 76 670 1004 1338 1672 77 664 996 1327 1659 78 659 988 1317 1646 79 654 980 1306 1633 80 649 972 1296 1620 81 643 964 1285 1607 82 638 957 1275 1593 83 633 949 1264 1580 84 628 941 1254 1567 85 622 933 1243 1554 86 617 925 1233 1541 87 612 917 1222 1528 88 607 909 1212 1515 89 601 901 1201 1501 90 596 894 1191 1488 91 591 886 1180 1475 92 586 878 1170 1462 93 580 870 1159 1449 94 575 862 1149 1436 95 570 854 1138 1422 96 564 846 1128 1409 97 559 838 1117 1396 98 554 830 1106 1383 99 549 822 1096 1370 100 543 814 1085 1357 101 538 807 1075 1343 102 533 799 1064 1330 103 527 791 1054 1317 104 522 783 1043 1304 105 517 775 1032 1290 106 512 767 1022 1277 107 506 759 1011 1264 108 501 751 1001 1251 109 496 743 990 1237 110 490 735 979 1224 111 485 727 969 1211 112 480 719 958 1198 113 474 711 948 1184 114 469 703 937 1171 115 464 695 926 1158 116 459 687 916 1145 117 453 679 905 1131 118 448 671 894 1118 119 443 663 884 1105 120 437 655 873 1091 121 432 647 862 1078 122 427 639 852 1065 123 421 631 841 1051 124 416 623 831 1038 125 411 615 820 1025 126 405 607 809 1011 127 400 599 798 998 128 395 591 788 985 129 389 583 777 971 130 384 575 766 958 11 www.national.com 11 Page

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