IC TEMP SENS/SWITCH 105C 6LLP

LM26LVCISDX-105/NOPB

Manufacturer Part NumberLM26LVCISDX-105/NOPB
DescriptionIC TEMP SENS/SWITCH 105C 6LLP
ManufacturerNational Semiconductor
SeriesPowerWise®
LM26LVCISDX-105/NOPB datasheet
 


Specifications of LM26LVCISDX-105/NOPB

Sensing Temperature105°C Trip PointOutput TypeActive High/Push Pull, Active Low/Open Drain, Voltage
Voltage - Supply1.6 V ~ 5.5 VAccuracy±2.2°C
Package / Case6-WDFN Exposed PadLead Free Status / RoHS StatusLead free / RoHS Compliant
Other namesLM26LVCISDX-105  
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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 (T
) can be preset at the factory to any
TRIP
temperature in the range of 0°C to 150°C in 1°C increments.
Built-in temperature hysteresis (T
HYST
ble in an environment of temperature instability.
In normal operation the LM26LV temperature switch outputs
assert when the die temperature exceeds T
ature switch outputs will reset when the temperature falls
below a temperature equal to (T
OVERTEMP digital output, is active-high with a push-pull
structure, while the OVERTEMP digital output, is active-low
with an open-drain structure.
The analog output, V
, delivers an analog output voltage
TEMP
with Negative Temperature Coefficient — NTC.
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 V
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
Connection Diagram
LLP-6
Top View
See NS Package Number SDB06A
© 2010 National Semiconductor Corporation
LM26LV
Disk Drives
Games
Appliances
Features
) keeps the output sta-
Low 1.6V operation
Low quiescent current
Latching function: device can latch the Over Temperature
. The temper-
TRIP
condition
Push-pull and open-drain temperature switch outputs
− T
). The
TRIP
HYST
Wide trip point range of 0°C to 150°C
Very linear analog V
V
TEMP
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
output pin, which
TEMP
Key Specifications
Supply Voltage
Supply Current
Accuracy, Trip Point
Temperature
Accuracy, V
V
Output Drive
TEMP
Operating Temperature
Hysteresis Temperature
Typical Transfer Characteristic
V
TEMP
20204701
202047
September 9, 2010
temperature sensor output
TEMP
output short-circuit protected
0°C to 150°C
0°C to 150°C
TEMP
0°C to 120°C
−50°C to 0°C
−50°C to 150°C
4.5°C to 5.5°C
Analog Voltage vs Die Temperature
20204724
www.national.com
1.6V to 5.5V
8 μA (typ)
±2.2°C
±2.3°C
±2.2°C
±1.7°C
±100 μA

LM26LVCISDX-105/NOPB Summary of contents

  • Page 1

    ... Digital Cameras ■ Personal Digital Assistants (PDA's) ■ Battery Management ■ Automotive Connection Diagram LLP-6 Top View See NS Package Number SDB06A © 2010 National Semiconductor Corporation LM26LV ■ Disk Drives ■ Games ■ Appliances Features ) keeps the output sta- ■ Low 1.6V operation ■ ...

  • Page 2

    ... This pin may be left open 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. 2 ...

  • Page 3

    ... Ground DAP Die Attach Pad Typical Application Description V Analog Voltage Output TEMP If TRIP TEST = 0 then Temperature Sensor Output Voltage TEMP TS If TRIP TEST = 1 then Temperature Trip Voltage TEMP TRIP This pin may be left open if not used. Positive Supply Voltage Power Supply Ground ...

  • Page 4

    ... LM26LVCISD-100 100°C LM26LVCISDX-100 100°C LM26LVCISD-095 95°C LM26LVCISDX-095 95°C LM26LVCISD-090 90°C LM26LVCISDX-090 90°C LM26LVCISD-085 85°C LM26LVCISDX-085 85°C LM26LVCISD-080 80°C LM26LVCISDX-080 80°C LM26LVCISD-075 75°C LM26LVCISDX-075 75°C LM26LVCISD-070 70°C LM26LVCISDX-070 70°C LM26LVCISD-065 65°C LM26LVCISDX-065 65°C LM26LVCISD-060 60°C LM26LVCISDX-060 60°C LM26LVCISD-050 50° ...

  • Page 5

    ... For soldering specifications: see product folder at www.national.com and www.national.com/ms/MS/MS- SOLDERING.pdf Accuracy Characteristics Trip Point Accuracy Parameter Trip Point Accuracy (Note 7) Operating Ratings (Note 1) Specified Temperature Range: −0.3V to +6.0V LM26LV −0.3V to +6.0V Supply Voltage Range (V + 0.5V) DD Thermal Resistance (θ + 0.5V) LLP-6 (Package SDB06A) DD ± − ...

  • Page 6

    ... TEMP There are four gains corresponding to each of the four Temperature Trip Point Ranges. Gain 1 is the sensor gain used for Tem- perature Trip Point 0 - 69°C. Likewise Gain 2 is for Trip Points 70 - 109 °C; Gain 3 for 110 - 129 °C; and Gain 4 for 130 - 150 °C. ...

  • Page 7

    ... Logic "1" Output Voltage OH BOTH OVERTEMP and OVERTEMP DIGITAL OUTPUTS V Logic "0" Output Voltage OL OVERTEMP DIGITAL OUTPUT Logic "1" Output Leakage I OH Current (Note 10) V ANALOG TEMPERATURE SENSOR OUTPUT TEMP V Sensor Gain TEMP V Load Regulation TEMP (Note 9) V Supply- to-V DD TEMP ...

  • Page 8

    ... Note 7: Accuracy is defined as the error between the measured and reference output voltages, tabulated in the Conversion Table at the specified conditions of supply gain setting, voltage, and temperature (expressed in °C). Accuracy limits include line regulation within the specified conditions. Accuracy limits do not include load regulation; they assume no DC load. ...

  • Page 9

    ... Typical Performance Characteristics V Output Temperature Error vs. Temperature TEMP Supply Current vs. Temperature Load Regulation, 100 mV Overhead T = 80°C Sourcing Current Minimum Operating Temperature vs. Supply Voltage 20204707 Supply Current vs. Supply Voltage 20204704 Load Regulation, 200 mV Overhead (Note 12 80°C Sourcing Current 20204740 9 20204706 ...

  • Page 10

    Load Regulation, 400 mV Overhead T = 80°C Sourcing Current Load Regulation, V Sinking Current Load Regulation, V Sinking Current www.national.com (Note 12) 20204747 = 1.6V DD (Note 13) 20204741 = 2.4V Change (Note 13) 20204745 10 ...

  • Page 11

    V Supply-Noise Rejection vs. Frequency TEMP Line Regulation V vs. Supply Voltage TEMP Gain 2: For Trip Points 70 - 109°C Line Regulation V vs. Supply Voltage TEMP Gain 4: For Trip Points 130 - 150°C V TEMP Gain 1: ...

  • Page 12

    ... Die TEMP Temperature, in °C, for each of the four gains corresponding to each of the four Temperature Trip Point Ranges. Gain 1 is the sensor gain used for Temperature Trip Point 0 - 69°C. Likewise Gain 2 is for Trip Points 70 - 109 °C; Gain 3 for 110 - 129 ° ...

  • Page 13

    V , Analog Output Voltage, mV TEMP Die Gain 1: Gain 2: Gain 3: Temp., for for for ° TRIP TRIP TRIP 0-69°C 70-109°C 110-129°C 24 1407 1876 939 25 934 1400 1866 26 928 ...

  • Page 14

    ... T 649 811 highest temperature. 638 797 For example want to determine the equation of a line 627 784 with Gain 4, over a temperature range of 20°C to 50°C, we would proceed as follows: 616 770 606 757 595 743 584 730 573 ...

  • Page 15

    ... TRIP TEST Digital Input The TRIP TEST pin simply provides a means to test the OVERTEMP and OVERTEMP digital outputs electronically by causing them to assert, at any operating temperature result of forcing the TRIP TEST pin high. When the TRIP TEST pin is pulled high the V ...

  • Page 16

    ... V L voltage. For example application where μA, the junction temperature would be 30.021 °C, show ing a self-heating error of only 0.021°C. Since the LM26LV's junction temperature is the actual temperature being mea- sured, care should be taken to minimize the load current that ...

  • Page 17

    ... 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 LM26LV 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 ...

  • Page 18

    ... The TRIP TEST pin, normally used to check the operation of the OVERTEMP and OVERTEMP pins, may be used to latch the outputs whenever the temperature exceeds the programmed limit and causes the digital outputs to assert. As shown in the figure, when OVERTEMP goes high the TRIP TEST input is also pulled high and causes OVERTEMP output to latch high and the OVERTEMP output to latch low ...

  • Page 19

    ... Physical Dimensions inches (millimeters) unless otherwise noted 6-Lead LLP-6 Package Order Number LM26LVCISD, LM26LVCISDX NS Package Number SDB06A 19 www.national.com ...

  • Page 20

    ... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...