MAX17703
PRODUCTION4.5V to 60V, Synchronous Step-Down Li-Ion Battery Charger Controller
Wide Input Voltage, High-Efficiency, Switching Super Cap Battery Charger
- Part Models
- 2
- 1ku List Price
- Starting From $3.56
Overview
- Optimized Feature-Set for Li-Ion Batteries Including Li-Polymer, LiFePO4 and Li-Titanate
- ±4% Charging Current Regulation Accuracy
- ±6% Charging Current Monitor Accuracy (ISMON)
- ±1% Voltage Regulation Accuracy
- Programmable Constant Current (CC) Mode Charging Current (ILIM)
- Charge Termination on Full Battery Detection with Taper Current Threshold and Taper Timer
- Wide 4.5V to 60V Input-Voltage Range
- Adjustable Output-Voltage Range from 1.25V up to 12 Li-Ion cells 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)
- Safety Timer Feature (TMR)
- Deeply Discharged Battery Detection and Preconditioning (DDTH)
- Battery Temperature Sensing and Charge when Within Temperature of Range (TEMP)
- 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 MAX17703 is a high-efficiency, high-voltage, synchronous, step-down, Himalaya Li-ion battery-charger controller designed to operate over an input-voltage range of a 4.5V to 60V. The MAX17703 operates over a wide -40°C to +125°C temperature range and offers a complete charging solution for Li-ion batteries with a ±4% accurate constant current. 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) and constant voltage (CV) states and terminates in a top-up-charge state after the taper timer is elapsed. The device resumes charging automatically when the battery voltage falls below the recharge voltage threshold. Detection and preconditioning of deeply discharged batteries are enabled by a deep discharge detection comparator.
The MAX17703 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 and Medical Equipment
- Power Tools and Handheld Terminals
Documentation
Data Sheet 1
Video 1
Brochure 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 |
|---|---|---|---|
| MAX17703ATG+ | LFCSP | ||
| MAX17703ATG+T | LFCSP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Apr 20, 2026 - 2571D PIN/ERRATA |
||
| MAX17703ATG+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 MAX17703 in 4.2V Li-Ion Battery Charger Application