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LTC1443

Features: `Ultralow Quiescent Current: 8.5A Max`Wide Supply Range Single: 2V to 11V Dual: ±1V to ±5.5V`Input Voltage Range Includes the Negative Supply`Reference Output Drives 0.01F Capacitor`Adjustable Hysteresis (LTC1444/LTC1445)`TTL/CMOS Compatible Outputs`Propagation Delay: 12s (Typ) (10mV Ove...

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LTC1443: Features: `Ultralow Quiescent Current: 8.5A Max`Wide Supply Range Single: 2V to 11V Dual: ±1V to ±5.5V`Input Voltage Range Includes the Negative Supply`Reference Output Drives 0.01F Capacitor`Adjust...

LTC1443 Data Sheet

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Part Number:
LTC1443
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

`Ultralow Quiescent Current: 8.5A Max
`Wide Supply Range Single: 2V to 11V Dual: ±1V to ±5.5V
`Input Voltage Range Includes the Negative Supply
`Reference Output Drives 0.01F Capacitor
`Adjustable Hysteresis (LTC1444/LTC1445)
`TTL/CMOS Compatible Outputs
`Propagation Delay: 12s (Typ) (10mV Overdrive)
`No Crowbar Current
`40mA Continuous Source Current
`Pin Compatible Upgrades for MAX924 (LTC1443)


Application

· Battery-Powered System Monitoring
· Threshold Detectors
· Window Comparators
· Oscillator Circuits


Pinout

Connection Diagram


Specifications

Voltage:
V+ to V , V + to GND, GND to V ..........12V to 0.3V
IN+, IN, HYST ................ (V + + 0.3V) to (V 0.3V)
REF ................................. (V + + 0.3V) to (V 0.3V)
OUT (LTC1443) .............. (V+ + 0.3V) to (GND 0.3V)
OUT (LTC1444/LTC1445)
......................................... (V+ + 0.3V) to (V 0.3V)
Storage Temperature Range ......... 65°C to 150°C
Lead Temperature Range (Soldering, 10 sec).. 300°C
Current:
IN+, IN, HYST .................................................. 20mA
REF ................................................................... 20mA
OUT .................................................................. 50mA
OUT Short Circuit Duration (V+ 5.5V) ... Continuous
Power Dissipation ...........................................500mW
Operating Temperature Range
Commercial .......................................... 0°C to 70°C
Industrial ........................................ 40°C to 85°C


Description

The LTC®1443/LTC1444/LTC1445 are ultralow power quad  comparators with a built-in reference. The comparators feature less than 8.5mA supply current over temperature, an internal reference (1.182V ±1% for LTC1443 or 1.221V ±1% for LTC1444/LTC1445), programmable hysteresis (LTC1444/LTC1445) and TTL/CMOS output (LTC1443/ LTC1445) that sinks and sources current (open-drain output for LTC1444). The reference output can drive a bypass capacitor of up to 0.01mF without oscillation.

The comparators operate from a single 2V to 11V supply or a dual ±1V to ±5.5V supply (LTC1443). Comparator hysteresis is easily programmable using two resistors and the HYST pin (LTC1444/LTC1445). Each comparator's input operates from the negative supply to within 1.3V of the positive supply. The LTC1443/LTC1445 comparator output stage can continuously source up to 40mA. By eliminating the cross-conducting current that normally happens when the comparator changes logic states, power supply glitches are eliminated.

The LTC1443/LTC1444/LTC1445 are available in the 16-pin SO and PDIP packages.




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