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DS56S Datasheet

  • DS56S

  • IC-SM-DUAL OUTPUT THERMOSTAT

  • 98.38KB

  • 6頁(yè)

  • ETC

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PRELIMINARY
DS56
Dual Temperature Comparator
www.dalsemi.com
FEATURES
摟
Factory calibrated for sensitivity of +6.20
mV/擄C and thermometer accuracy of 鹵2.0擄C
over the 0擄C to 85擄C range and 鹵3擄C over the
40擄C to 0擄C and +85擄C to +125擄C range
摟
Measurement range of -40擄C to +125擄C
摟
Integrated temperature sensor and voltage
reference
摟
Two independent temperature setpoints with
respective logic outputs with set hysteresis
摟
Narrow-body SO8 (150-mil) package
摟
Wide power supply range (2.7V
鈮?/div>
V
DD
鈮?/div>
5.5V)
摟
Functionally compatible with LM56xIM
摟
Applications include monitoring disk drives,
printers, office equipment, HVAC,
appliances, or any power/cost/temperature-
sensitive environments.
PIN ASSIGNMENT
V
REF
V
T2
V
T1
GND
1
2
3
4
8
7
6
5
V
DD
T
OUT1
T
OUT2
V
TEMP
DS56S 8-Pin SOIC (150-mil)
PIN DESCRIPTION
V
REF
V
T2
V
T1
GND
V
TEMP
T
OUT2
T
OUT1
V
DD
- Bandgap Voltage Reference
Output
- Temperature Trip Point 2
- Temperature Trip Point 1
- Ground
- Temp Sensor Output Voltage
- Thermostat output for Trip
Point 2
- Thermostat output for Trip
Point 1
- Power Supply Voltage (2.7V
to 5.5V)
DESCRIPTION
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鈥?junction temperature to define the thermostat output logic state. The
s
internal temperature sensor has a typical sensitivity of +6.2mV/擄C and DC offset of +395 mV at 0擄C.
Both thermostat outputs have 5擄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
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