Overview
The LTC4013IUFD#PBF, manufactured by Analog Devices Inc., is a high-voltage battery charger IC designed for charging a wide range of lead-acid batteries, including both vented and sealed types. It also supports charging for Li-Ion/Polymer and LiFePO4 batteries. This synchronous buck (step-down) converter utilizes external N-channel MOSFETs and offers high efficiency, making it suitable for various battery management applications.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Units |
|---|---|---|---|---|
| Input Voltage Range (DCIN, VIN) | 4.5 | 60 | V | |
| Battery Voltage Range (BAT) | 2.4 | 60 | V | |
| ENAB Pin Threshold (Rising) | 1.175 | 1.220 | 1.275 | V |
| ENAB Pin Bias Current | 10 | nA | ||
| Operating Temperature Range | -40 | 125 | °C | |
| Package Type | 28-Lead (4mm x 5mm) Plastic QFN |
Key Features
- Wide input voltage range: 4.5V to 60V
- Wide battery voltage range: 2.4V to 60V
- Built-in charge algorithms for lead-acid and Li-Ion batteries
- Supports bulk, float, absorption, and equalization charging
- 0.5% float voltage accuracy and 5% charge current accuracy
- Maximum power point tracking input-voltage regulation for limited power sources like solar panels
- User-programmable absorption and equalization times
- NTC temperature-compensated float voltage
- Two open-drain status pins
- Thermally enhanced 28-lead QFN package
- External N-channel MOSFET isolation control circuit
Applications
- Battery backup for lighting, UPS systems, security cameras, and computer control panels
- Portable medical equipment
- Solar-powered systems
- Industrial battery charging
Q & A
- What is the input voltage range of the LTC4013?
The input voltage range of the LTC4013 is from 4.5V to 60V.
- What types of batteries does the LTC4013 support?
The LTC4013 supports a wide range of lead-acid batteries, including both vented and sealed types, as well as Li-Ion/Polymer and LiFePO4 batteries.
- What is the operating temperature range of the LTC4013?
The operating temperature range of the LTC4013 is from -40°C to 125°C.
- What is the package type of the LTC4013?
The LTC4013 comes in a 28-lead (4mm x 5mm) plastic QFN package.
- Does the LTC4013 support maximum power point tracking?
Yes, the LTC4013 includes maximum power point tracking input-voltage regulation for limited power sources such as solar panels.
- How is the charge current programmed in the LTC4013?
The charge current is programmed with an external sense resistor.
- What are the key features of the LTC4013's charging algorithms?
The LTC4013 supports bulk, float, absorption, and equalization charging with built-in charge algorithms for lead-acid and Li-Ion batteries. It also includes user-programmable absorption and equalization times and NTC temperature-compensated float voltage.
- What are some common applications of the LTC4013?
The LTC4013 is commonly used in battery backup systems, portable medical equipment, solar-powered systems, and industrial battery charging.
- How accurate is the float voltage and charge current of the LTC4013?
The LTC4013 has a 0.5% float voltage accuracy and a 5% charge current accuracy.
- Does the LTC4013 have any status indicators?
Yes, the LTC4013 includes two open-drain status pins for monitoring the charging status.
