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LTC4000
High Voltage High Current Controller for Battery Charging and Power Management
Overview
Features and Benefits
- Complete High Performance Battery Charger When Paired with a DC/DC Converter
- Wide Input and Output Voltage Range: 3V to 60V
- Input Ideal Diode for Low Loss Reverse Blocking and Load Sharing
- Output Ideal Diode for Low Loss PowerPath™ and Load Sharing with the Battery
- Instant-On Operation with Heavily Discharged Battery
- Programmable Input and Charge Current: ±1% Accuracy
- ±0.25% Accurate Programmable Float Voltage
- Programmable C/X or Timer Based Charge Termination
- NTC Input for Temperature Qualified Charging
- 28-Lead 4mm × 5mm QFN or SSOP Packages
Product Details
The LTC4000 is a high voltage, high performance controller that converts many externally compensated DC/DC power supplies into full-featured battery chargers.
Features of the LTC4000’s battery charger include: accurate (±0.25%) programmable float voltage, selectable timer or current termination, temperature qualified charging using an NTC thermistor, automatic recharge, C/10 trickle charge for deeply discharged cells, bad battery detection and status indicator outputs. The battery charger also includes precision current sensing that allows lower sense voltages for high current applications.
The LTC4000 supports intelligent PowerPath control. An external PFET provides low loss reverse current protection. Another external PFET provides low loss charging or discharging of the battery. This second PFET also facilitates an instant-on feature that provides immediate downstream system power even when connected to a heavily discharged or short faulted battery.
The LTC4000 is available in a low profile 28-lead 4mm × 5mm QFN and SSOP packages.
| LTC4000 | LTC4000-1 | |
| Input Voltage Regulation MPPC | No | Yes |
| Input Current Monitoring | Yes | Yes |
| Input Current Regulation | Yes | No |
Applications
- High Power Battery Charger Systems
- High Performance Portable Instruments
- Industrial Battery Equipped Devices
- Notebook/Subnotebook Computers
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (3)
Documentation
Reliability Data (1)
Application Notes (1)
Tools & Simulations
LTspice
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LTspice Simulations
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Reference Materials
Solutions Bulletins & Brochures (1)
Transform a DC/DC Converter into a High Performance, Full-Featured Battery...
Press Releases (1)
Design Resources
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PCN-PDN Information
Sample & Buy
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