LT3652
PRODUCTIONPower Tracking 2A Battery Charger for Solar Power
- Part Models
- 8
- 1ku List Price
- Starting From $4.64
Overview
- Input Supply Voltage Regulation Loop for Peak Power Tracking in (MPPT) Solar Applications
- Wide Input Voltage Range: 4.95V to 32V (40V Abs Max)
- Programmable Charge Rate Up to 2A
- User Selectable Termination: C/10 or On-Board Termination Timer
- Resistor Programmable Float Voltage Up to 14.4V Accommodates Li-Ion/Polymer, LiFePO4, SLA Chemistries
- No VIN Blocking Diode Required for Battery Voltages ≤ 4.2V
- 1MHz Fixed Frequency
- 0.5% Float Voltage Reference Accuracy
- 5% Charge Current Accuracy
- 2.5% C/10 Detection Accuracy
- Binary-Coded Open-Collector Status Pins
- Thermally Enhanced 12-Lead 3mm × 3mm DFN and MSE Packages
The LT3652 is a complete monolithic step-down battery charger that operates over a 4.95V to 32V input voltage range. The LT3652 provides a constant-current/constant-voltage charge characteristic, with maximum charge current externally programmable up to 2A. The charger employs a 3.3V float voltage feedback reference, so any desired battery float voltage up to 14.4V can be programmed with a resistor divider.
The LT3652 employs an input voltage regulation loop, which reduces charge current if the input voltage falls below a programmed level, set with a resistor divider. When the LT3652 is powered by a solar panel, the input regulation loop is used to maintain the panel at peak output power.
The LT3652 can be configured to terminate charging when charge current falls below 1/10 of the programmed maximum (C/10). Once charging is terminated, the LT3652 enters a low-current (85μA) standby mode. An auto-recharge feature starts a new charging cycle if the battery voltage falls 2.5% below the programmed float voltage. The LT3652 also contains a programmable safety timer, used to terminate charging after a desired time is reached. This allows top-off charging at currents less than C/10.
| VIN Max | VFLOAT Max | Features | |
| LT3652 | 32V | 14.4V | Internal Reverse Blocking VBAT< 4.2V |
| LT3652HV | 34V | 18V |
APPLICATIONS
- Solar Powered Applications
- Remote Monitoring Stations
- LiFePO4 (Lithium Phosphate) Applications
- Portable Handheld Instruments
- 12V to 24V Automotive Systems
Documentation
Data Sheet 1
User Guide 1
Application Note 1
Technical Articles 5
Video 1
Product Selector Card 4
Brochure 2
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 |
|---|---|---|---|
| LT3652EDD#PBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3652EDD#TRPBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3652EMSE#PBF | 12-Lead MSOP w/ EP | ||
| LT3652EMSE#TRPBF | 12-Lead MSOP w/ EP | ||
| LT3652IDD#PBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3652IDD#TRPBF | 12-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3652IMSE#PBF | 12-Lead MSOP w/ EP | ||
| LT3652IMSE#TRPBF | 12-Lead MSOP w/ EP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only) |
||
| LT3652EDD#PBF | PRODUCTION | |
| LT3652EDD#TRPBF | PRODUCTION | |
| LT3652EMSE#PBF | PRODUCTION | |
| LT3652EMSE#TRPBF | PRODUCTION | |
| LT3652IDD#PBF | PRODUCTION | |
| LT3652IDD#TRPBF | PRODUCTION | |
| LT3652IMSE#PBF | PRODUCTION | |
| LT3652IMSE#TRPBF | PRODUCTION | |
|
Jun 5, 2024 - 24_0003 Epoxy Change from Henkel 8290 to 8290A for MSOP Package (2) |
||
| LT3652EMSE#PBF | PRODUCTION | |
| LT3652EMSE#TRPBF | PRODUCTION | |
| LT3652IMSE#PBF | PRODUCTION | |
| LT3652IMSE#TRPBF | PRODUCTION | |
|
Feb 4, 2020 - 20_0129 Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LT3652EMSE#PBF | PRODUCTION | |
| LT3652EMSE#TRPBF | PRODUCTION | |
| LT3652IMSE#PBF | PRODUCTION | |
| LT3652IMSE#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 | ||
| LTM8062 | RECOMMENDED FOR NEW DESIGNS | 32VIN, 2A μModule (Power Module) Power Tracking Battery Charger |
| Battery Monitors & Fuel Gauges 1 | ||
| LTC2943 | NOT RECOMMENDED FOR NEW DESIGNS | Multicell Battery Gas Gauge with Temperature, Voltage and Current Measurement |
| Circuit Monitors 1 | ||
| LTC2960 | RECOMMENDED FOR NEW DESIGNS | 36V Nano-Current Two-Input Voltage Monitor |
| Ideal Diodes and PowerPath Controllers 3 | ||
| LTC4359 | RECOMMENDED FOR NEW DESIGNS | Ideal Diode Controller with Reverse Input Protection |
| LTC4417 | RECOMMENDED FOR NEW DESIGNS | Prioritized PowerPath™ Controller |
| LTC2956 | RECOMMENDED FOR NEW DESIGNS | Wake-Up Timer with Pushbutton Control |
| Temperature Sensors 1 | ||
| LTC2991 | RECOMMENDED FOR NEW DESIGNS | Octal I2C Voltage, Current, and Temperature Monitor |
| Parts | Product Life Cycle | Description |
|---|---|---|
| LT3652HV | RECOMMENDED FOR NEW DESIGNS | Power Tracking 2A Battery Charger |
Tools & Simulations
LTspice 1
Models for the following parts are available in LTspice:
- LT3652
- LT3652HV
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
LT3652EDD Demo Board | 11.5V to 32VIN, 2A Buck Battery Charger, MPPC for Solar Power Input