DS56X/T&R

DS56X/T&R Datasheet

DS56 Dual Temperature Comparator

Part	Datasheet
DS56X/T&R	DS56X/T&R (pdf)

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DS56 Dual Temperature Comparator § Factory calibrated for sensitivity of mV/°C and thermometer accuracy of ±2.0°C over the 0°C to 85°C range and ±3°C over the 40°C to 0°C and +85°C to +125°C range § Measurement range of -40°C to +125°C § Integrated temperature sensor and voltage reference § Two independent temperature setpoints with respective logic outputs with set hysteresis § Narrow-body SO8 150-mil package § Wide power supply range 2.7V 5.5V § Functionally compatible with LM56xIM § Applications include monitoring disk drives, printers, office equipment, HVAC, appliances, or any power/cost/temperature- sensitive environments. PIN ASSIGNMENT VREF GND 4 TOUT1 TOUT2 VTEMP DS56S 8-Pin SOIC 150-mil PIN DESCRIPTION VREF - Bandgap Voltage Reference Output VT2 VT1 GND - Temperature Trip Point 2 - Temperature Trip Point 1 - Ground VTEMP TOUT2 - Temp Sensor Output Voltage - Thermostat output for Trip Point 2 TOUT1 - Thermostat output for Trip Point 1 - Power Supply Voltage 2.7V to 5.5V The DS56 Dual Temperature Comparator has two independent open-drain thermostat outputs and respective trip point inputs. The trip points are set with external resistors that divide down the 1.25V internal bandgap voltage reference. The voltage resulting from this resistive division is compared with the voltage corresponding to the device’s junction temperature to define the thermostat output logic state. The internal temperature sensor has a typical sensitivity of +6.2mV/°C and DC offset of +395 mV at 0°C. Both thermostat outputs have 5°C of hysteresis. For applications that require temperature measurement as well as control, the temperature sensor voltage is brought out to a pin. The DS56 is packaged in a compact 150-mil, 8-pin SOIC. Applications include disk drives, printers, office equipment, HVAC, appliances, or any power/cost/temperature-sensitive environments. 1 of 6 102299 DS56 DETAILED PIN DESCRIPTION Table 1 PIN SYMBOL TYPE VREF Analog output Bandgap output 1.25V nom voltage reference output.

PDF Datasheet Preview

DS56 Dual Temperature Comparator
§ Factory calibrated for sensitivity of
mV/°C and thermometer accuracy of ±2.0°C
over the 0°C to 85°C range and ±3°C over the
40°C to 0°C and +85°C to +125°C range § Measurement range of -40°C to +125°C § Integrated temperature sensor and voltage
reference § Two independent temperature setpoints with
respective logic outputs with set hysteresis § Narrow-body SO8 150-mil package § Wide power supply range 2.7V
5.5V § Functionally compatible with LM56xIM § Applications include monitoring disk drives,
printers, office equipment, HVAC,
appliances, or any power/cost/temperature-
sensitive environments.

PIN ASSIGNMENT

VREF

GND 4

TOUT1

TOUT2

VTEMP

DS56S 8-Pin SOIC 150-mil

PIN DESCRIPTION

VREF
- Bandgap Voltage Reference

Output

VT2 VT1 GND
- Temperature Trip Point 2 - Temperature Trip Point 1 - Ground

VTEMP TOUT2
- Temp Sensor Output Voltage - Thermostat output for Trip

Point 2

TOUT1
- Thermostat output for Trip Point 1
- Power Supply Voltage 2.7V
to 5.5V

The DS56 Dual Temperature Comparator has two independent open-drain thermostat outputs and respective trip point inputs. The trip points are set with external resistors that divide down the 1.25V internal bandgap voltage reference. The voltage resulting from this resistive division is compared with the voltage corresponding to the device’s junction temperature to define the thermostat output logic state. The internal temperature sensor has a typical sensitivity of +6.2mV/°C and DC offset of +395 mV at 0°C. Both thermostat outputs have 5°C of hysteresis.

For applications that require temperature measurement as well as control, the temperature sensor voltage is brought out to a pin.

The DS56 is packaged in a compact 150-mil, 8-pin SOIC. Applications include disk drives, printers, office equipment, HVAC, appliances, or any power/cost/temperature-sensitive environments.
1 of 6
102299

DS56

DETAILED PIN DESCRIPTION Table 1

PIN SYMBOL

TYPE

VREF Analog output Bandgap output 1.25V nom voltage reference output.

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Datasheet ID: DS56X/T&R 508400