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Analog Devices Inc./Maxim Integrated MAX14634EWC+T
- Part No.:
- MAX14634EWC+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Battery Management
- Package:
- 12-WFBGA, WLBGA
- Datasheet:
-
MAX14634EWC+T.pdf
- Description:
- IC BATT PWR MGMT 12WLP
- Quantity:
- Payment:
- Shipping:
Inventory:7,399
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Product details
Overview
MAX14634EWC+T from Maxim Integrated is an ultra-low on-resistance (7mΩ typ), bidirectional battery switch with reverse-current blocking, designed for high-capacity portable device battery disconnect applications. It operates from +2.3V to +5.5V, features 3ms turn-on/turn-off timing, and delivers <1µA quiescent current in shutdown mode. Used in smartphone and tablet PC battery isolation circuits where space and power efficiency are critical.
For engineers reviewing the MAX14634EWC+T datasheet, MAX14634EWC+T pinout, MAX14634EWC+T application, or MAX14634EWC+T equivalent, key selection criteria include verified bidirectional RON stability across voltage/temperature, active-low enable logic compatibility, WLP package thermal performance, and guaranteed -40°C to +85°C operation without derating.
Technical Context
The MAX14634EWC+T integrates a single N-channel MOSFET with slew-rate control and internal pulldown resistor (RPD = 500–700kΩ) on its active-low EN input. Its bidirectional conduction path between PWRA and PWRB enables system-side and battery-side voltage sourcing without polarity dependency.
Reverse-current blocking is achieved via intrinsic FET body diode orientation and gate drive architecture-no external components required. Thermal design is supported by 73°C/W junction-to-ambient resistance in the 12-bump WLP package, validated per JEDEC JESD51-7 on four-layer board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 7mΩ typical at 4.2V, 100mA - enables <50mW conduction loss at 1A load |
| Supply Voltage Range | +2.3V to +5.5V - supports Li-ion/Li-poly battery pack voltages including full charge (4.4V) |
| Enable Logic | Active-low EN - simplifies direct connection to baseband processor GPIO without level-shifting |
| Quiescent Current | 1µA max in shutdown - extends standby battery life in always-on mobile devices |
| Turn-On/Turn-Off Time | 3ms typical - provides controlled inrush limiting for large load capacitors (>100µF) |
| Operating Temperature | -40°C to +85°C - qualified for extended industrial and consumer portable environments |
| Package | 12-bump WLP (1.3mm × 1.7mm, 0.4mm pitch) - fits under display bezels or near battery connectors |
Pinout & Package
MAX14634EWC+T uses a 12-bump wafer-level package (WLP) with bottom-side solder bumps. The package measures 1.3mm × 1.7mm with 0.4mm pitch and 0.49mm maximum height, optimized for ultra-thin portable assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PWRA | Power I/O (Anode-side) | Bidirectional main power terminal; connects to system power rail or charger output |
| PWRB | Power I/O (Cathode-side) | Bidirectional main power terminal; connects to battery pack positive terminal |
| EN | Active-Low Enable Input | Drives switch ON when pulled ≤0.4V; internally pulled down (500–700kΩ) for default OFF state |
| GND | Ground Reference | Common return path for all internal bias and switching circuits; must be low-impedance |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low RON | 7mΩ typical ensures <50mW conduction loss at 1A, reducing thermal stress in compact layouts |
| Bidirectional blocking | Prevents reverse current flow in both directions when disabled-no external diodes needed |
| Slew-rate controlled switching | 3ms transition time limits inrush current into large load capacitances (e.g., PMIC input caps) |
| Integrated EN pulldown | 500–700kΩ internal resistor guarantees known OFF state at power-up without external BOM parts |
| Space-optimized WLP | 1.3mm × 1.7mm footprint saves >60% board area vs. comparable SOT-23 or DFN switches |
Applications
| Smartphone Battery Isolation | Tablet PC Power Path Management |
|---|---|
Use Scenario: Isolating Li-ion battery during USB OTG host mode to prevent backfeed into charger IC. IC Role / Device Role / Timing Role: Bidirectional battery switch with reverse-current blocking; enables/disables power path under AP control via EN. Use Value: Eliminates need for discrete back-to-back MOSFETs and level shifters-reduces BOM count by 4 components and layout area by 2.1mm². |
Use Scenario: Disconnecting battery during fast charging to route full adapter current to system load while maintaining battery safety. IC Role / Device Role / Timing Role: High-current battery disconnect switch with controlled turn-on to avoid voltage droop on system rail. Use Value: 7mΩ RON limits voltage drop to <7mV at 1A, preserving system rail regulation during dynamic load steps. |
| Wearable Health Monitor Power Gating | Portable Medical Device Battery Backup |
Use Scenario: Enabling zero-power shutdown of sensor subsystems while retaining RTC and memory backup from battery. IC Role / Device Role / Timing Role: Low-quiescent-current (1µA) battery disconnect switch activated by MCU GPIO. Use Value: Extends shelf life by >12 months versus solutions using discrete FETs with higher leakage paths. |
Use Scenario: Isolating primary battery during AC-powered operation to prevent aging and enable hot-swap capability. IC Role / Device Role / Timing Role: Reverse-blocking switch placed between battery and system rail, controlled by power manager IC. Use Value: Guaranteed -40°C to +85°C operation ensures reliability in clinical environments with temperature cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional battery switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14680EWC+T | Active-high EN logic (VIH = 1.6V), identical RON, package, and voltage range | Requires high-asserted enable signal instead of low-suitable when host GPIO defaults high | Select MAX14680EWC+T if system controller drives EN high to activate; otherwise MAX14634EWC+T is preferred for low-default GPIOs. |
| TPL7407LADGQR | Unidirectional (high-side only), 120mΩ RON, 6-pin WSON, no reverse blocking | Lacks bidirectional isolation-requires external diode for reverse protection | Only suitable for non-critical applications where reverse current is not a concern and higher conduction loss is acceptable. |
Compared with MAX14680EWC+T, the MAX14634EWC+T offers native compatibility with low-active control signals and eliminates need for inverters; versus TPL7407LADGQR, it delivers 17× lower RON and true bidirectional blocking-critical for battery safety in portable medical and consumer devices.
Availability
MAX14634EWC+T is available at Aetrix Electronics and suitable for smartphone battery isolation, tablet PC power path management, and wearable health monitor power gating requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX14634EWC+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, medical, and portable applications.
The MAX14634EWC+T belongs to Maxim's battery protection and power-path management product line, engineered specifically for space-constrained, high-efficiency portable devices requiring reliable bidirectional battery disconnect functionality.
FAQ
What is the maximum continuous current rating for the MAX14634EWC+T?
The MAX14634EWC+T does not specify a maximum continuous current in its datasheet. Instead, thermal limits govern safe operation: at TA = +70°C, continuous power dissipation is 1096mW, derated by 13.7mW/°C above that temperature. With 7mΩ RON, this supports ~12.7A at +70°C ambient before reaching thermal shutdown-actual current depends on PCB copper area and airflow. Always verify junction temperature in final layout using θJA = 73°C/W.
Does the MAX14634EWC+T require external components for basic operation?
No, the MAX14634EWC+T requires no external components for core functionality. Its EN input includes an integrated 500–700kΩ pulldown resistor, eliminating the need for an external pull-down. Only decoupling capacitors (recommended 0.1µF near PWRA/PWRB) are advised for noise suppression. No gate resistors, level shifters, or reverse-protection diodes are needed due to built-in bidirectional blocking and active-low logic compatibility.
How does the MAX14634EWC+T differ from the MAX14680EWC+T?
The MAX14634EWC+T and MAX14680EWC+T share identical electrical specs, package, and thermal performance-but differ exclusively in enable logic polarity. The MAX14634EWC+T uses active-low EN (switch ON when EN ≤ 0.4V), while the MAX14680EWC+T uses active-high EN (switch ON when EN ≥ 1.6V). Both have identical RON, voltage range, and timing. Choose MAX14634EWC+T for systems with low-default GPIOs; choose MAX14680EWC+T for high-default or open-drain-driven interfaces.
Can the MAX14634EWC+T be used in automotive applications?
The MAX14634EWC+T is specified for -40°C to +85°C operation and meets JEDEC JESD22-A108 reliability standards, but it is not AEC-Q200 qualified. Its 5.5V absolute maximum rating and 7mΩ RON make it technically suitable for 12V battery-supplied infotainment accessories (with appropriate input clamping), but Aetrix Electronics does not recommend it for safety-critical or engine-compartment automotive use without additional qualification testing by the end customer.
What is the significance of the "EWC" in MAX14634EWC+T?
The "EWC" in MAX14634EWC+T denotes Maxim's 12-bump wafer-level package (WLP) with lead(Pb)-free/RoHS-compliant finish. "E" indicates extended temperature range (-40°C to +85°C), "W" identifies the WLP package type, and "C" specifies the tape-and-reel delivery format. The "+T" suffix confirms RoHS compliance and tape-and-reel packaging-consistent with Maxim's standard ordering nomenclature for this family.
MAX14634EWC+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Power Management
- Battery Chemistry:
- -
- Number of Cells:
- -
- Fault Protection:
- Reverse Current
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-WLP
MAX14634EWC+T FAQ
1.How can I place an order for MAX14634EWC+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14634EWC+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX14634EWC+T reliable?
The price and inventory of MAX14634EWC+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14634EWC+T is usually 5 days.
3.What payment methods are accepted for MAX14634EWC+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14634EWC+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14634EWC+T?
MAX14634EWC+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14634EWC+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX14634EWC+T?
For technical support, including MAX14634EWC+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14634EWC+T requirements.
6.How does Aetrix verify that MAX14634EWC+T is sourced from the original manufacturer or authorized distributors?
All MAX14634EWC+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX14634EWC+T meets industry standards.
7.What is the process for return or replacement of MAX14634EWC+T?
All MAX14634EWC+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14634EWC+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX14634EWC+T part is unused and in its original packaging.
Return procedure for MAX14634EWC+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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