LTC1998
PRODUCTION2.5µA, 1% Accurate SOT-23 Comparator and Voltage Reference for Battery Monitoring
- Part Models
- 4
- 1ku List Price
- Starting From $1.25
Part Details
- High Accuracy Trip Voltage: 1% Max Error using External 1% Resistors
- Adjustable Threshold Voltage and Hysteresis
- Quiescent Current: 2.5µA Typ
- Output Swings Rail-to-Rail
- Thresholds Programmable from 2.5V to 3.25V
- Output State Guaranteed for VBATT ≥ 1.5V
- Low Profile (1mm) ThinSOT™ Package
The LTC1998 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 battery-low 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.
Applications
- Lithium-Ion Battery-Powered Equipment
- PDAs
- Cell Phones
- Handheld Instruments
- Battery Packs
- Pagers
- Palm Top Computers
- POS Terminals
Documentation
Data Sheet 1
Reliability Data 1
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC1998CS6#TRMPBF | 6-Lead TSOT-23 | ||
| LTC1998CS6#TRPBF | 6-Lead TSOT-23 | ||
| LTC1998IS6#TRMPBF | 6-Lead TSOT-23 | ||
| LTC1998IS6#TRPBF | 6-Lead TSOT-23 |
This is the most up-to-date revision of the Data Sheet.
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LTC1998
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Latest Discussions
No discussions on LTC1998 yet. Have something to say?
Start a Discussion on EngineerZone®