LM57CISD-5/NOPB National Semiconductor, LM57CISD-5/NOPB Datasheet - Page 10

• Manufacturer Part Number: LM57CISD-5/NOPB
• Description: IC, TEMPERATURE SW/SENSOR, ± 1.3°C, LLP8
• Manufacturer: National Semiconductor

Specifications of LM57CISD-5/NOPB

• Ic Output Type: Voltage
• Sensing Accuracy Range: ± 1.3°C
• Supply Current: 24µA
• Supply Voltage Range: 2.4V To 5.5V
• Sensor Case Style: LLP
• No. Of Pins: 8
• Msl: MSL 3 - 168 Hours
• Accuracy %: 1.3°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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1.1 Selection of R
To set the trip point:
(1) Locate the desired trip temperature on the Trip Point Ta-
ble.
(2) Identify the corresponding R
column up to the resistor value.
(3) Identify the corresponding R
row leftwards to the resistor value.
(4) Use only the EIA E96 standard resistor values from the
list.
(5) Use only the resistor with 1% tolerance and a temperature
coefficient of 100ppm (or better). These restrictions are nec-
2.0 LM57 V
Temperature
(°C)
−50
−49
−48
−47
−46
−45
−44
−43
−42
−41
−40
−39
−38
−37
−36
−35
−34
−33
−32
−31
−30
−29
−28
−27
−26
−25
−24
−23
−22
−21
−20
−19
−18
−17
−16
−15
−14
TEMP
TEMPERATURE-TO-VOLTAGE TABLE
SET
1353
1348
1343
1338
1333
1328
1323
1318
1313
1308
1303
1298
1293
1288
1283
1278
1273
1268
1263
1258
1253
1248
1243
1238
1233
1228
1223
1218
1213
1208
1203
1198
1193
1188
1182
1177
1172
J2
Resistors
2029
2021
2014
2006
1999
1992
1984
1977
1969
1962
1954
1947
1939
1932
1924
1917
1909
1902
1894
1887
1879
1872
1864
1857
1849
1841
1834
1826
1819
1811
1804
1796
1789
1781
1773
1766
1758
J3
SENSE2
SENSE1
V
TEMP
value by following the
value by following the
(mV)
2705
2695
2685
2675
2665
2655
2646
2636
2626
2616
2606
2596
2586
2576
2566
2556
2546
2536
2526
2516
2506
2495
2485
2475
2465
2455
2445
2435
2425
2415
2405
2395
2385
2375
2365
2354
2344
J4
3381
3369
3357
3344
3332
3319
3307
3294
3282
3269
3257
3244
3232
3219
3207
3194
3182
3169
3157
3144
3132
3119
3107
3094
3082
3069
3056
3044
3031
3019
3006
2993
2981
2968
2956
2943
2930
J5
10
essary to stay at the selected setting, and not to slip into an
adjacent setting.
(6) This is consistent with using resistors from the Thick Film
Chip Resistors CRCW0402 family. These are available with
very small dimensions of L = 1.0mm, W = 0.5mm, H =
0.35mm.
(7) Note that the resistor tolerance does not diminish the ac-
curacy of the trip point. See patent #6,924,758.
Temperature
(°C)
−13
−12
−11
−10
−9
−8
−7
−6
−5
−4
−3
−2
−1
10
11
12
13
14
15
16
17
18
19
20
21
22
23
0
1
2
3
4
5
6
7
8
9
1167
1162
1157
1152
1147
1142
1137
1132
1127
1122
1117
1112
1106
1101
1096
1091
1086
1081
1076
1071
1066
1061
1055
1050
1045
1040
1035
1030
1025
1020
1015
1009
1004
999
994
989
984
J2
1751
1743
1735
1728
1720
1713
1705
1697
1690
1682
1675
1667
1659
1652
1644
1636
1629
1621
1613
1606
1598
1590
1583
1575
1567
1560
1552
1544
1537
1529
1521
1514
1506
1498
1490
1483
1475
J3
V
TEMP
(mV)
2334
2324
2314
2304
2294
2284
2273
2263
2253
2243
2233
2223
2212
2202
2192
2182
2172
2161
2151
2141
2131
2121
2110
2100
2090
2080
2069
2059
2049
2039
2028
2018
2008
1997
1987
1977
1967
J4
2918
2905
2892
2880
2867
2854
2842
2829
2816
2803
2791
2778
2765
2753
2740
2727
2714
2702
2689
2676
2663
2650
2638
2625
2612
2599
2586
2574
2561
2548
2535
2522
2509
2497
2484
2471
2458
J5