Analog Devices Inc./Maxim Integrated MAX14680EWC+T

Product Summary MAX14680EWC+T Ultra-Low On-Resistance, Bidirectional Battery Switch

The MAX14680EWC+T from Analog Devices Inc./Maxim Integrated is a bidirectional battery switch optimized for modern portable device power management. Housed in a compact 12-bump wafer-level package (WLP), this device delivers efficient, space-saving battery isolation for designs requiring both performance and miniaturization. Addressing the unique demands of applications such as tablets, smartphones, and advanced battery isolators, the MAX14680EWC+T provides the essential switching and protection required in high-density electronics.

Engineered to operate within a wide input range of +2.3V to +5.5V and across an industrial-grade temperature window (-40°C to +85°C), the switch is tailored for battery-powered solutions where reliable, robust performance is mandatory. Its architecture combines advanced low-resistance switching with bidirectional control logic, enabling seamless system-level battery management.

Main Features and Advantages of the MAX14680EWC+T

The MAX14680EWC+T incorporates an array of features that directly serve engineering requirements in compact, current-intensive designs:

Ultra-low On-Resistance: With a typical on-resistance (RON) of just 7mΩ, the device ensures minimal voltage drop and power loss during operation. This is particularly valuable for preserving battery life and maximizing power delivery in portable and high-performance systems.

Bidirectional FET with Reverse Blocking: The switch can effectively isolate the battery from the system when required, preventing unwanted current flow in either direction—a key advantage in overcharge, discharge-protection, or hot-swap scenarios.

Integrated Slew-Rate Control: Internal circuitry manages inrush current and voltage transients, simplifying the power design around large load capacitors or high-current loads.

Low Quiescent Current: The MAX14680EWC+T is engineered for low internal static power consumption, supporting overall system efficiency and extending device standby times.

Compact Form Factor: The 12-bump, 1.3mm × 1.7mm, 0.4mm pitch WLP package is ideal for dense PCB layouts and applications where board area is at a premium.

Electrical and Thermal Specifications for the MAX14680EWC+T

Designed to align with the stringent demands of portable electronics, the MAX14680EWC+T offers robust electrical and thermal performance:

Input Voltage Range: +2.3V to +5.5V, compatible with singleor multi-cell lithium-based battery architectures.

Maximum Current Handling: The switch can support up to ±7A transient current, suiting applications with significant peak load demands.

Temperature Range: Reliable operation is maintained from -40°C to +85°C, ensuring compatibility with both consumer and industrial environments.

Power Dissipation: With a standard derating of 13.7mW/°C above 70°C, the device can dissipate up to 1.096W at 70°C, backed by a thermal resistance of 73°C/W (junction-to-ambient, JEDEC 4-layer board standard).

Absolute Maximum Ratings: Key nodes are protected up to +6V, and the device tolerates extreme storage and soldering conditions, including up to +260°C reflow temperature.

Functional Overview and Application Recommendations for the MAX14680EWC+T

At the heart of the MAX14680EWC+T is an integrated bidirectional FET switch, engineered with reverse current blocking capability. This design inherently protects sensitive downstream circuitry and the battery itself, mitigating the risks of unwanted energy transfer. The switch is controlled via an EN pin—an active-high logic input with an internal pulldown—to ensure simple and reliable system-level control.

Use cases include:

Battery disconnect for protection during system faults or servicing.

Hot-swap circuits where safe insertion/removal of battery packs is required.

High-speed power path management in devices undergoing frequent charging cycles.

The device’s slew-rate control is critical where large capacitive loads are switched, reducing EMI and inrush current—challenges commonly encountered in modern high-speed system designs. Additionally, the MAX14680EWC+T’s reverse-blocking ensures safe operation during power sequencing and multi-source systems.

Package Specifications and System Integration Guidelines for the MAX14680EWC+T

The MAX14680EWC+T comes in a 12-bump WLP with 1.3mm × 1.7mm outline and a 0.4mm bump pitch. This package supports efficient high-density placement on multilayer PCBs and requires attention to proper land pattern design and soldering profiles consistent with its JEDEC-recommended thermal performance.

Key considerations include:

PCB layout must optimize for thermal dissipation, especially when operating near maximum current or in elevated ambient environments.

The compact WLP is advantageous for ultra-thin mobile designs but requires precise assembly processes and inspection for reliability.

Integration with other power management ICs from the MAX146xx family is straightforward, with consistent pin control logic simplifying system architectures.

Alternative or Replacement Options Comparable to the MAX14680EWC+T

When evaluating the MAX14680EWC+T for a new or legacy design, engineers may also consider the close family member MAX14634, which offers comparable ultra-low on-resistance and bidirectional switching but differs in logic control polarity (active-low for MAX14634 vs. active-high for MAX14680EWC+T). Both devices are part of the same product platform and offer similar electrical and packaging specifications, providing flexibility for designers to match logic requirements to their control architecture.

Other potential alternatives may include products from Analog Devices Inc./Maxim Integrated’s portfolio of battery switches, especially where subtle differences in control logic, package size, or integration features might make one part more suitable for a given application.

Conclusion

: Engineering value and application summary for the MAX14680EWC+T

The MAX14680EWC+T stands out as a power management solution purpose-built for high-efficiency, space-sensitive portable electronic designs. Its combination of ultra-low on-resistance, integrated bidirectional reverse-blocking FETs, robust protection features, and miniature WLP packaging addresses the most critical engineering challenges in battery-powered systems.

By supporting high current, minimizing board footprint, and integrating key control and protection features, the MAX14680EWC+T simplifies the development of reliable, efficient products. For engineers and procurement teams seeking a proven, high-performance battery switch for next-generation portable devices, the MAX14680EWC+T offers an optimal blend of integration, size, and electrical performance, ensuring robust operation across diverse application scenarios.