MAX17702
PRODUCTION4.5V to 60V, Synchronous Step-Down Lead-Acid Battery Charger Controller
- Part Models
- 2
- 1ku List Price
- Starting From $3.56
Overview
- Optimized Feature-Set for Pb-Acid Batteries
- ±4% Charging Current Regulation Accuracy
- ±6% Charging Current Monitor Accuracy (ISMON)
- ±1% Voltage Regulation Accuracy
- Programmable Constant Current (CC) Mode Charging Current (ILIM)
- Full-Battery Detection with Taper Current Threshold and Absorption CV Timer (TMR)
- Wide 4.5V to 60V Input-Voltage Range
- Adjustable Output-Voltage Range from 1.25V up to Four 12V Pb-Acid Batteries in Series
- 125kHz to 2.2MHz Adjustable Frequency with External Clock Synchronization (RT/SYNC)
- Reliable Operation in Adverse Environmental Conditions
- Input Short-Circuit Protection (GATEN)
- Deeply Discharged Battery Detection and Preconditioning (DDTH)
- Battery Temperature Sensing and Charge when Within Temperature of Range (TEMP)
- Output Voltage Temperature Compensation
- Cycle-by-Cycle Overcurrent Limit
- Programmable EN/UVLO Threshold
- Status Output Monitoring Using Open-Drain Outputs (FLG1 and FLG2)
- Overtemperature Protection
- Complies with CISPR 32 (EN55032) Class B Conducted and Radiated Emissions
- Wide -40°C to +125°C Ambient Operating Temperature Range/ -40°C to +150°C Junction Temperature Range
The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller, and simpler power supply solutions. The MAX17702 is a high-efficiency, high-voltage, synchronous, step-down, Himalaya lead-acid (Pb-acid) battery charger controller designed to operate over an input-voltage range of 4.5V to 60V. The MAX17702 operates over a wide -40°C to +125°C temperature range and offers a complete charging solution for Pb-acid batteries with a ±4% accurate constant-current regulation. The output voltage is programmable from 1.25V up to (VDCIN - 2.1V) with ±1% regulation accuracy.
The device uses an external nMOSFET to provide input supply-side short-circuit protection, preventing battery discharge.
The device charges the battery in constant current (CC), absorption constant voltage (CV) states and enters floating CV state after detecting taper current threshold or absorption CV timer timeout in Absorption CV state. Detection and preconditioning of deeply discharged batteries are enabled by a deep discharge detection comparator.
he MAX17702 is available in a 24-pin 4mm x 4mm TQFN package with an exposed pad.
Applications
- Battery Backup for Lighting, Security Cameras, and Control Panels
- Building and Home-Automation Backup Power
- Industrial Battery Charging and Energy Storage
- Portable Industrial Equipment
- Power Tools
Documentation
Data Sheet 1
Video 1
Book & eBook 1
Analog Dialogue 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 |
|---|---|---|---|
| MAX17702ATG+ | LFCSP | ||
| MAX17702ATG+T | LFCSP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 20, 2026 - 2571D PIN/ERRATA |
||
| MAX17702ATG+T | 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/SoftwareTools & Simulations
SIMPLIS Models 1
Evaluation Kits
Evaluation Kit for the MAX17702 in 13.8V Lead-Acid Battery Charger Application