LTC1759: Smart Battery Charger Data Sheet8/24/2007295K
Features and Benefits
- Single Chip Smart Battery Charger Controller
- 100% Compliant (Rev 1.0) SMBus Support Allows for Operation with or without Host
- SMBus Accelerator Improves SMBus Timing
- Hardware Interrupt and SMBAlert Response Eliminate Interrupt Polling
- High Efficiency Synchronous Buck Charger
- 0.5V Dropout Voltage; Maximum Duty Cycle > 99.5%
- AC Adapter Current Limit Maximizes Charge Rate*
- 1% Voltage Accuracy; 5% Current Accuracy
- Up to 8A Charging Current Capability
- Dual 10-Bit DACs for Charger Voltage and Current Programming
- User-Selectable Overvoltage and Overcurrent Limits
- High Noise Immunity Thermistor Sensor
- Small 36-Lead Narrow (0.209 Inches) SSOP Package
The LTC1759 Smart Battery Charger is a single chip charging solution that dramatically simplifies construction of an SBS compliant system. The LTC1759 implements a Level 2 charger function whereby the charger can be programmed by the battery or by the host. A thermistor on the battery being charged is monitored for temperature, connectivity and battery type information. The SMBus interface remains alive when the AC power adapter is removed and responds to all SMBus activity directed to it, including thermistor status (via the ChargerStatus command). The charger also provides an interrupt to the host whenever a status change is detected (e.g., battery removal, AC adapter connection).
Charging current and voltage are restricted to chemistry specific limits for improved system safety and reliability. Limits are programmable by two external resistors. Additionally, the maximum average current from the AC adapter is programmable to avoid overloading the adapter when simultaneously supplying load current and charging current. When supplying system load current, charging current is automatically reduced to prevent adapter overload.
- Portable Computers
- Portable Instruments
- Docking Stations
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
R402 Reliability Data3/27/2018111 K
Smart Battery Charger Is Programmed via the SMBus11/1/1999 LT Journal
LTC1759 Companion Parts
Recommended Related Parts
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 Number||Material Declaration||Reliability Data||Pin/Package Drawing||CAD Symbols, Footprints & 3D Models|
|LTC1759CG#PBF||Material Declaration||Reliability Data||36-Lead SSOP|
|LTC1759CG#TRPBF||Material Declaration||Reliability Data||36-Lead SSOP|
|Wafer Fabrication Data||R402 Reliability Data|
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Support & Discussions
Sample & Buy
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Please see the latest communication from our CCO regarding lead times.
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.