General description

lm56 is a precise low -power thermostat. Two stable temperature trigger points (VT1 and VT2) are using 3 external resistors. LM56 has two digital output. When the output 1 becomes lower when the temperature exceeds T1, the temperature is higher than (T1 – THYST). Similarly, when the temperature exceeds T2, when the temperature becomes higher than the time (T2 – THYST). Thysst is a typical lag 5 degrees Celsius set in internal settings. LM56 has a 8-lead mini-SO8 surface installation packaging and a 8-lead contour packaging.

Application

microprocessor heat management

Device

Portable battery power supply 3.0V or 5V system

Fan control

Industrial process control

HVAC system

Remote sensing temperature

Electronic system protection

Features

Digital output Support TTL logic level

Internal temperature sensor with lagging N 2 internal comparator

Internal voltage benchmark

Currently providing 8 -pin SO plastic packaging

The future availability of the 8-needle mini-So8

Main specifications

Power supply voltage 2.7V- 10V

230 Wei'an (maximum value)

395 millival N temperature trigger point accuracy:

Absolute maximum rated value (Note 1 1 1 )

Input voltage 12V

An input current of any pin (Note 2) 5mAh

Packaging input current (Note 2) 20 mia

] Packaging loss at TA 25 ° C

(Note 3) 900 MW

Static discharge sensitivity (Note 4)

Human model 1000V

Infrared (15 seconds) 220 degrees Celsius

Storage temperature 65 ° C to+150 ° C

Working rated value (Note 1)

The working temperature range TMIN ≤ TA ≤ TMAX

lm56bim, LM56CIM 40 degrees C≤ta ≤+125 degrees C [123 ]

The largest VOUT1 and VOUT2+10V

LM56 electrical characteristics

The following specifications are applicable to V+ 2.7 VDC and VREF load current 50 μA, unless there are other regulations. The black body Lim is suitable for ta tj tmin to TMAX; unless there are other regulations, all other limit TA TJ 25 ° C.

LM56 electrical characteristics

The following specifications are applicable to V+ 2.7 VDC and VREF load current 50 μA, unless there are other regulations. The black body Lim is suitable for ta tj tmin to TMAX; unless there are other regulations, all other limit TA TJ 25 ° C.

Note 1: Absolute maximum rated value indicates the limit that the device may be damaged. The work rated value indicates the conditions of the equipment, but does not guarantee specific performance restrictions. Please refer to the electrical characteristics of the guarantee specifications and test conditions. The guarantee specifications are only applicable to the test conditions listed. When the device does not run under the test conditions, certain performance characteristics may be reduced.

Note 2: When the input voltage (VI) of any pin exceeds the power supply (VI LT; GND or Vi GT; V+), the current of the pin should be limited to 5 mAh. The maximum packaging input current rated value of 20 mAh limits that the input current is 5 mAh to 4 mAh, which can safely exceed the number of pipes that can exceed the power supply.

Note 3: The maximum power consumption must be reduced at high temperature, and it is determined by TJMAX (maximum knot temperature), θJa (pair AM Bient thermal resistance) and TA (ambient temperature). The maximum allowable power consumption at any temperature is pd (TJMAX -TA)/θJa or a given value in the absolute maximum rated value, which is lower. For this device, tjmax 125 ℉. For this device, the types of typical thermal resistance (θJa) installation boards of different packages are as follows:

Note 5: For other methods of welding surface installation device, see the surface installation method and its impact on the surface installation method and its impact on product reliability " or the title of "surface installation " in the national semiconductor linear data manual after 1986.

Note 6: The typical value is tj ta 25 ℉