LM57CISDX-5/NOPB National Semiconductor, LM57CISDX-5/NOPB Datasheet
LM57CISDX-5/NOPB
Specifications of LM57CISDX-5/NOPB
LM57CISD-5X
LM57CISD-5X/NOPB
LM57CISDX-5
Related parts for LM57CISDX-5/NOPB
LM57CISDX-5/NOPB Summary of contents
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... TRIP-TEST low or powering off the LM57 draws only 28µA max from its supply, it has very low self- heating, about 0.02°C in still air. Connection Diagram 8 – Pin LLP Top View © 2010 National Semiconductor Corporation LM57 Applications ■ Cell phones ■ Wireless transceivers ■ ...
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... Block Diagram Typical Application www.national.com Typical Temperature Characteristics 30080576 2 30080503 30080508 ...
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... Tie this pin to ground if not used. Over Temperature Switch output Active Low, Open-drain (See Section 2.1 regarding required pull- up resistor.) Asserted when the measured temperature exceeds the Trip Point Temperature or if TRIP TEST = 1 This pin may be left open if not used. Over Temperature Switch output ...
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... LM57BISD–10 LM57BISDX–10 8-Pin LLP LM57CISD–5 LM57CISDX–5 LM57CISD–10 LM57CISDX–10 Note: The “-5” suffix is for 5°C hysteresis The “-10” suffix is for 10°C hysteresis Contact National Semiconductor Corporation for high temperature die (above 150°C). www.national.com ...
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... Specified Temperature Range −0. Supply Voltage Range −0. −0. 0.3V −65°C to 150°C 5500V 450V 1250V There are four gains corresponding to each of the four Temperature Trip Point Condition T = −41°C to 52° 2. 52°C to 97° 2. 97° ...
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... No output series resistor required (See section 5.2) ≤ Source 600 µA ≤ Source 1.2 mA ≤ Sink 600 µA ≤ Sink 1.2 mA ≤ Sink 600 µA ≤ Sink 1.2 mA Temperature = 30°C 5°C hysteresis option 10°C hysteresis option MIN MAX Min Typ Max Units (Note 5) (Note 4) ...
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... Note 7: Supply Current refers to the quiescent current of the LM57 only and does not include any load current Note 8: This current is leakage current only and is therefore highest at high temperatures. Prototype test indicate that the leakage is well below 1 μA over the full temperature range. This 1 μA specification reflects the limitations of measuring leakage at room temperature. For this reason only, the leakage current is not guaranteed at a lower value ...
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... Load Regulation: Change in V Overhead is Vdd-Vtemp Line Regulation: V vs. Supply Voltage TEMP Start - Up Response www.national.com vs. Source Current Load Regulation: Change in V TEMP 30080567 30080572 30080525 8 vs. Sink Current TEMP 30080568 Line Regulation: Hysteresis vs. Supply Voltage 30°C 30080526 Hysteresis vs. Temperature 30080527 ...
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Application Information 1.0 RESISTOR PROGRAMMING Trip Point (°C) vs. Set-Resistor Values (Ω) J2 976k 825k 698k 976k -40.7 -16.3 7.3 825k -39.1 -14.8 8.8 698k -37.6 -13.3 10.2 590k -36.0 -11.8 11.7 499k -34.5 -10.3 13.1 412k -32.9 -8.8 14.6 ...
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... Identify the corresponding R SENSE1 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-TO-VOLTAGE TABLE TEMP V ...
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... Temperature J4 J5 (°C) 1956 2445 72 1946 2432 73 1936 2419 74 1925 2406 75 1915 2394 76 1905 2381 77 1894 2368 78 1884 2355 79 1874 2342 ...
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... J3, J4, or J5). The trip point range associated with a given gain is shown 781 976 in bold on this table. The Vtemp gain is selected by the Rset resistors. Vtemp 770 962 is valid over the entire temperature range. −41°C to 52°C V TEMP 52°C to 97°C V TEMP 97° ...
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... MHz. PP Above the frequency a premature trigger may occur. With the die temperature at 2°C below the trip point, and a magnitude of 200 mV , there are no premature triggers from PP 100 Hz to 300 kHz. Above that frequency a premature trigger may occur ...
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... C/W FIGURE 4. LM57 Thermal Resistance 7.0 Rset TABLE The LM57 uses the voltage at the two Rsense pins to set the trip point for the temperature switch possible to drive the www.national.com output from the two Rsense pins with a voltage equal to the value generated ...
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... Applications Circuits FIGURE 5. Temperature Switch Using Push-Pull Output FIGURE 6. Temperature Switch Using Open-Drain Output 30080561 30080562 15 www.national.com ...
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... Most CMOS ADCs found in microcontrollers and ASICs have a sampled data comparator input structure. When the ADC charges the sampling cap, it requires instantaneous charge from the output of the analog source such as the LM57 temperature sensor and many op amps. This requirement is easily accommodated by the addition of a capacitor (C on the size of the sampling capacitor and the sampling frequency ...
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... Power down then power up. The LM57 always comes released condition. The TRIP TEST pin, normally used to check the operation of the T the temperature exceeds the programmed limit and causes the digital outputs to assert. As shown in the figure, when T high the TRIP TEST input is also pulled high and causes T switching the TRIP TEST input low will reset the LM57 to normal operation ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 8-Pin LLP NS Package Number SDA08B 18 ...
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Notes 19 www.national.com ...
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