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LTC1998

Features: ` High Accuracy Trip Voltage: 1% Max Error Using External 1% Resistors` Adjustable Threshold Voltage and Hysteresis` Quiescent Current: 2.5A Typ` Output Swings Rail-to-Rail` Thresholds Programmable from 2.5V to 3.25V` Output State Guaranteed for VBATT 1.5V` Low Profile (1mm) ThinSOTTM P...

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SeekIC No. : 004401979 Detail

LTC1998: Features: ` High Accuracy Trip Voltage: 1% Max Error Using External 1% Resistors` Adjustable Threshold Voltage and Hysteresis` Quiescent Current: 2.5A Typ` Output Swings Rail-to-Rail` Thresholds Pro...

LTC1998 Data Sheet

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Part Number:
LTC1998
Supply Ability:
5000

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

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Product Details

Description



Features:

` High Accuracy Trip Voltage: 1% Max Error Using External 1% Resistors
` Adjustable Threshold Voltage and Hysteresis
` Quiescent Current: 2.5A Typ
` Output Swings Rail-to-Rail
` Thresholds Programmable from 2.5V to 3.25V
` Output State Guaranteed for VBATT 1.5V
` Low Profile (1mm) ThinSOTTM Package


Application

·Lithium-Ion Battery-Powered Equipment
   PDAs
   Cell Phones
   Handheld Instruments
   Battery Packs
   Pagers
   Palm Top Computers
   POS Terminals


Pinout

Connection Diagram


Specifications

Total Supply Voltage (BATT or VLOGIC to GND) ............. 6V
Voltage
   VTH.A, VH.A ........................... BATT + 0.3V to GND 0.3V
   BATTLO ............................. VLOGIC + 0.3V to GND 0.3V
Operating Temperature Range (Note 3) .....40°C to 85
Specified Temperature Range (Note 4)
   LTC1998C ...................................................40 to 85
   LTC1998I.....................................................40 to 85
Storage Temperature Range ..................... ..65 to 150
Lead Temperature (Soldering, 10 sec)........................ 300


Description

The LTC®1998 is a micropower comparator and a precision adjustable reference in a 6-pin SOT-23 package that is optimized for lithium-ion low battery detection circuits.

The LTC1998 features a voltage detection circuit with an adjustable threshold voltage and hysteresis. The threshold voltage can be programmed from 2.5V to 3.25V with two external resistors. A 10mV to 750mV hysteresis can be added with a third external resistor.

A proprietary internal architecture maintains 1% threshold voltage accuracy over temperature with low cost 1% external resistors.

A separate power supply pin, VLOGIC, allows the batterylow logic output to operate below the battery voltage, allowing compatibility with low voltage microprocessors without a pull-up resistor. Power supply glitches are eliminated by preventing the cross-conducting current which occurs when the output changes state.

The LTC1998 operates with battery or supply voltages up to 5.5V and its battery-low output is valid for battery voltages above 1.5V.




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