LT3650-4.X
PRODUCTIONHigh Voltage 2 Amp Monolithic Li-Ion Battery Charger
- Part Models
- 16
- 1ku List Price
- Starting From $4.27
Overview
- Wide Input Voltage Range: 4.75V to 32V (40V Absolute Maximum)
- Programmable Charge Current Up to 2A
- User-Selectable Termination: C/10 or Onboard Termination Timer
- Dynamic Charge Rate Programming/Soft-Start Pin
- Programmable Input Current Limit
- No VIN Blocking Diode Required
- 1MHz Fixed Frequency
- Average Current Mode Control
- 0.5% Float Voltage Accuracy
- 5% Charge Current Accuracy
- 2.5% C/10 Detection Accuracy
- NTC Resistor Temperature Monitor
- Auto-Recharge at 97.5% Float Voltage
- Auto-Precondition at <70% Float Voltage
- Bad Battery Detection with Auto-Reset
- Binary Coded Open-Collector Status Pins
- 3mm × 3mm DFN-12 or MSOP-12 Package
The LT3650 is a complete monolithic single-cell Li-Ion/Polymer battery charger that operates over a 4.75V to 32V input voltage range (7.5V minimum start-up voltage). The LT3650 provides a constant-current/constant-voltage charge characteristic, with maximum charge current externally programmable up to 2A, set using an external current sense resistor. A precondition feature trickle charges a low voltage battery, and bad-battery detection provides a signal and suspends charging if a battery does not respond to preconditioning.
The LT3650 can be configured to terminate charging when charge current falls to C/10, or one-tenth the programmed maximum current. Once charging is terminated, the LT3650 enters a low current (85μA) standby mode. An auto-restart feature starts a new charging cycle if the battery voltage drops 2.5% from the fl oat voltage, or if a new battery is inserted into a charging system.
The LT3650 contains a user-programmable internal safety timer (typically set to a three hour full cycle time). The IC can be configured to use this internal timer if a time-based termination scheme is desired in which charging can continue below C/10 until a desired time is reached.
The LT3650 is available in a low profile (0.75mm) 3mm × 3mm 12-pin DFN and 12-pin MSOP packages.
| Float Voltage | |
| LT3650-4.1 | 4.1V |
| LT3650-4.2 | 4.2V |
| LT3650-8.2 | 8.2V |
| LT3650-8.4 | 8.4V |
Applications
- Industrial Handheld Instruments
- 12V to 24V Automotive and Heavy Equipment
- Desktop Cradle Chargers
- Notebook Computers
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Technical Articles 1
Product Selector Card 1
Brochure 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 |
|---|---|---|---|
| LT3650EDD-4.1#PBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3650EDD-4.1#TRPBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3650EDD-4.2#PBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3650EDD-4.2#TRPBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3650EMSE-4.1#PBF | 12-Lead MSOP w/ EP | ||
| LT3650EMSE-4.1#TRPBF | 12-Lead MSOP w/ EP | ||
| LT3650EMSE-4.2#PBF | 12-Lead MSOP w/ EP | ||
| LT3650EMSE-4.2#TRPBF | 12-Lead MSOP w/ EP | ||
| LT3650IDD-4.1#PBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3650IDD-4.1#TRPBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3650IDD-4.2#PBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3650IDD-4.2#TRPBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3650IMSE-4.1#PBF | 12-Lead MSOP w/ EP | ||
| LT3650IMSE-4.1#TRPBF | 12-Lead MSOP w/ EP | ||
| LT3650IMSE-4.2#PBF | 12-Lead MSOP w/ EP | ||
| LT3650IMSE-4.2#TRPBF | 12-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LT3650EMSE-4.1#PBF | PRODUCTION | |
| LT3650EMSE-4.1#TRPBF | PRODUCTION | |
| LT3650EMSE-4.2#PBF | PRODUCTION | |
| LT3650EMSE-4.2#TRPBF | PRODUCTION | |
| LT3650IMSE-4.1#PBF | PRODUCTION | |
| LT3650IMSE-4.1#TRPBF | PRODUCTION | |
| LT3650IMSE-4.2#PBF | PRODUCTION | |
| LT3650IMSE-4.2#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT3650EMSE-4.1#PBF | PRODUCTION | |
| LT3650EMSE-4.1#TRPBF | PRODUCTION | |
| LT3650EMSE-4.2#PBF | PRODUCTION | |
| LT3650EMSE-4.2#TRPBF | PRODUCTION | |
| LT3650IMSE-4.1#PBF | PRODUCTION | |
| LT3650IMSE-4.1#TRPBF | PRODUCTION | |
| LT3650IMSE-4.2#PBF | PRODUCTION | |
| LT3650IMSE-4.2#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareHardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Battery Charger ICs 1 | ||
| LT3652HV | RECOMMENDED FOR NEW DESIGNS | Power Tracking 2A Battery Charger |
| Circuit Monitors 1 | ||
| LTC2960 | RECOMMENDED FOR NEW DESIGNS | 36V Nano-Current Two-Input Voltage Monitor |
| Overvoltage & Overcurrent Protectors 1 | ||
| LTC4365 | RECOMMENDED FOR NEW DESIGNS | Overvoltage, Undervoltage and Reverse Supply Protection Controller |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT3650-4.1
- LT3650-4.2
- LT3650-8.2
- LT3650-8.4
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.
Evaluation Kits
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