LT3652HV - Power Tracking 2A Battery Charger
Features
- Input Supply Voltage Regulation Loop for Peak Power Tracking in (MPPT) Solar Applications
- Wide Input Voltage Range:
4.95V to 34V (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 18V Accommodates 4-Cell Li-Ion/Polymer, 5-Cell LiFePO4, Lead-Acid Chemistries
- Parallelable for Higher Output Current
- 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
AEC-Q100 data available for specific packages
Typical Application
Description
The LT3652HV is a complete monolithic step-down battery charger that operates over a 4.95V to 34V input range. The LT3652HV 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 18V can be programmed with a resistor divider.
The LT3652HV 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 LT3652HV is powered by a solar panel, the input regulation loop is used to maintain the panel at peak output power.
The LT3652HV can be configured to terminate charging when charge current falls below 1/10 of the programmed maximum (C/10). Once charging is terminated, the LT3652HV 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 fl oat voltage. The LT3652HV 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 |
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LT3652HVEDD#PBF | 3x3 DFN-12 | DD | E | 05-08-1725 | Yes |
| LT3652HVEDD#TRPBF | 3x3 DFN-12 | DD | E | 05-08-1725 | Yes |
| LT3652HVEMSE#PBF | MS-12E | MSE | E | 05-08-1666 | Yes |
| LT3652HVEMSE#TRPBF | MS-12E | MSE | E | 05-08-1666 | Yes |
| LT3652HVIDD#PBF | 3x3 DFN-12 | DD | I | 05-08-1725 | Yes |
| LT3652HVIDD#TRPBF | 3x3 DFN-12 | DD | I | 05-08-1725 | Yes |
| LT3652HVIMSE#PBF | MS-12E | MSE | I | 05-08-1666 | Yes |
| LT3652HVIMSE#TRPBF | MS-12E | MSE | I | 05-08-1666 | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT3652HVEDD#PBF | 3x3 DFN-12 | E | $4.86 | $3.40 | Yes | |
| LT3652HVEDD#TRPBF | 3x3 DFN-12 | E | $3.46 | Yes | ||
| LT3652HVEMSE#PBF | MS-12E | E | $4.86 | $3.40 | Yes | |
| LT3652HVEMSE#TRPBF | MS-12E | E | $3.46 | Yes | ||
| LT3652HVIDD#PBF | 3x3 DFN-12 | I | $5.29 | $3.70 | Yes | |
| LT3652HVIDD#TRPBF | 3x3 DFN-12 | I | $3.76 | Yes | ||
| LT3652HVIMSE#PBF | MS-12E | I | $5.29 | $3.70 | Yes | |
| LT3652HVIMSE#TRPBF | MS-12E | I | $3.76 | Yes | ||
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1688A | LT3652HVEDD Demo Board | 17.7V to 34VIN, Buck 12V Lead Acid@2A, MPPC for Solar Power Input | $150.00 | |
| Buy Now | |||
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LT3652HVIDD#PBF | 3x3 DFN-12 | I | $5.29 | $3.70 | Yes | |
| LT3652HVIDD#TRPBF | 3x3 DFN-12 | I | $3.76 | Yes | ||
| LT3652HVIMSE#PBF | MS-12E | I | $5.29 | $3.70 | Yes | |
| LT3652HVIMSE#TRPBF | MS-12E | I | $3.76 | Yes | ||
| Buy Now • Request Samples | ||||||
Applications
- Solar Powered Applications
- Remote Monitoring Stations
- Portable Handheld Instruments
- 12V to 24V Automotive Systems
- Battery Charging from Current Limited Adapter
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Design Tools
LTspice
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Models for the following parts are available in LTspice:
LT3652
LT3652HV
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
