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Analog Devices Inc./Maxim Integrated MAX20313EWC+
- Part No.:
- MAX20313EWC+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Current Regulation/Management
- Package:
- 12-WFBGA, WLBGA
- Datasheet:
-
MAX20313EWC+.pdf
- Description:
- IC CURRENT SWITCH 5% 12WLP
- Quantity:
- Payment:
- Shipping:
Inventory:1,095
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Product details
Overview
MAX20313EWC+ from Maxim Integrated is a programmable current-limit switch designed for high-current load switching and large-capacitor charging in portable power rails. It features adjustable current limiting from 500mA to 6A, 10mΩ typical on-resistance, ±5% current-limit accuracy (2A–6A), and continuous current-limit fault response. It operates from +2.5V to +5.5V and supports RF power amplifier supply protection in smartphones.
For engineers reviewing the MAX20313EWC+ datasheet, MAX20313EWC+ pinout, MAX20313EWC+ application, or MAX20313EWC+ equivalent, key selection criteria include its active-high enable logic, continuous overcurrent response mode, reverse-current blocking with 3µs fast response, thermal self-limitation at +130°C, and WLP-12 package compatibility with space-constrained mobile designs.
Technical Context
The MAX20313EWC+ integrates a low-RON N-channel MOSFET with precision current-sense feedback and programmable blanking time (12–18ms) to distinguish transient surges from true faults. Its SETI pin accepts a resistor-to-GND to set current limit via a calibrated 3329 mV·Ω/A coefficient and 12 mA offset.
It implements dual reverse-current protection thresholds: accurate blocking triggers at 1–25mV (VOUT–VIN) with 128µs debounce, and fast blocking activates at 40–110mV with 3µs response. FLAG asserts open-drain upon overcurrent (after blanking), reverse fault, or thermal shutdown at +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit Range | 500mA to 6A, set by external RSETI (e.g., 680Ω = 6A); enables one device to cover multiple load profiles |
| On-Resistance (RON) | 10mΩ typical at 4.3V/1A; minimizes voltage drop and power loss in high-current paths |
| Current-Limit Accuracy | ±5% for 2A–6A range; ensures predictable fault threshold across temperature and supply voltage |
| Reverse Current Blocking | Fast response ≤3µs at ≥40mV VOUT–VIN; prevents backfeed into weak or shared power domains |
| Thermal Behavior | Self-limitation at +130°C (average current reduction), shutdown at +150°C with 20°C hysteresis; avoids PCB-level thermal runaway |
| Enable Logic | Active-high EN input (VIH ≥1.4V); simplifies direct interface with 1.8V/3.3V GPIO without level-shifting |
| Operating Voltage | +2.5V to +5.5V input range; supports USB PD, single-cell Li-ion, and dual-cell alkaline systems |
Pinout & Package
MAX20313EWC+ uses a 12-bump wafer-level package (WLP), 1.68mm × 1.48mm, 0.4mm pitch, RoHS-compliant. Bumps are on bottom; top-side marking is "ADT".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | FLAG | Open-drain fault indicator; pulls low on overcurrent (after blanking), reverse current, or thermal shutdown |
| A2 | SETI | Current-limit programming input; connects to GND via resistor to set ILIM (500mA–6A); also provides current-monitor voltage |
| A3 | GND | Power and signal reference ground; must be low-impedance connection for stable current sensing |
| A4 | EN | Active-high enable; drives switch ON when ≥1.4V, OFF when ≤0.4V; no internal pullup/pulldown |
| B1, B4, C1, C4 | IN | Power input terminal; requires ≥1µF ceramic bypass close to package to suppress supply sag during short-circuit events |
| B2, B3, C2, C3 | OUT | Switched output terminal; connects to load; requires ≥1µF ceramic bypass to stabilize voltage during load transients |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable current limit | 500mA–6A via single external resistor; eliminates need for multiple fixed-limit parts in BOM |
| Continuous current-limit mode | MAX20313EWC+ sustains regulated current during overload instead of latching off-enables auto-recovery in transient-fault environments |
| Fast reverse-current blocking | 3µs response at ≥40mV reverse bias; protects upstream supplies from backfeed in multi-rail systems |
| Thermal self-limitation | Automatic current reduction at +130°C junction; maintains functionality under sustained overload without shutdown |
| Accurate current monitoring | VSETI = (IOUT × 3329)/RSETI + 12mV; enables real-time load diagnostics without external sense resistor |
Applications
| RF Power Amplifier Supply | USB Type-C Port Power Switching |
|---|---|
|
Use Scenario: Isolating PA supply rail during transmit bursts to prevent supply droop and noise coupling into sensitive analog sections. IC Role / Device Role / Timing Role: High-side current-limit switch enabling controlled ramp-up and fast fault response to protect PA bias circuitry. Use Value: 10mΩ RON minimizes insertion loss; 3µs reverse-blocking prevents VBAT contamination from PA output harmonics. |
Use Scenario: Managing power delivery to USB-C receptacles with dynamic current allocation (e.g., 3A/5A modes) and overcurrent protection per port. IC Role / Device Role / Timing Role: Programmable load switch enforcing precise current limits aligned with USB PD contract negotiation. Use Value: ±5% current accuracy ensures compliance with USB PD 3.1 sink requirements; continuous mode avoids disruptive port resets during brief surges. |
| SDXC Card Power Management | UTCA/ATCA Board Slot Protection |
|
Use Scenario: Controlling power to high-capacity SDXC cards during hot-plug events and write-intensive operations. IC Role / Device Role / Timing Role: Inrush-limited switch preventing >1A surge into 1000µF+ card capacitance while maintaining stable VCCIO. Use Value: Adjustable 500mA–6A limit accommodates both legacy SDHC and UHS-II cards; 12–18ms blanking avoids false trips during card initialization. |
Use Scenario: Protecting backplane power slots in carrier-grade telecom blades against hot-swap transients and downstream short circuits. IC Role / Device Role / Timing Role: Robust current-limit switch with thermal self-regulation ensuring uninterrupted operation under sustained 3A–4A loads. Use Value: +130°C self-limitation allows safe operation without forced airflow; 72.8°C/W θJA enables thermal design on standard 4-layer boards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-limit switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20315EWC+ | Same current range and RON, but active-low EN and continuous current-limit mode; identical thermal behavior and reverse-blocking specs | Requires inverted control signal; suitable where system MCU uses active-low enable outputs | Select MAX20315EWC+ only if board-level EN signal polarity matches-no change to current-limit or protection behavior |
| TPL7407LDR | Fixed 700mA limit, 120mΩ RON, no reverse-current blocking, no current monitoring, SOIC-8 package | Limited to low-current peripherals; lacks programmability and bidirectional protection needed for USB/PA rails | Use TPL7407LDR only for cost-sensitive, low-power non-critical loads where 700mA and SOIC layout are acceptable |
Compared with MAX20313EWC+, MAX20315EWC+ offers identical protection and current-setting capability but demands active-low control, whereas TPL7407LDR sacrifices adjustability, efficiency, and reverse protection for lower cost and simpler footprint-making MAX20313EWC+ optimal for compact, high-performance mobile and telecom power rails.
Availability
MAX20313EWC+ is available at Aetrix Electronics and suitable for RF power amplifier supply management, USB Type-C port protection, and SDXC card power sequencing requiring stable component supply, full production traceability, and long-term lifecycle support.
Supply support for MAX20313EWC+ 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, automotive, and communications applications.
The MAX20313–MAX20316 family targets space-constrained portable and infrastructure equipment requiring programmable, high-accuracy current limiting with integrated reverse-current and thermal protection-specifically optimized for smartphone PA rails, modular data cards, and telecom blade power distribution.
FAQ
What is the enable logic polarity of the MAX20313EWC+?
The MAX20313EWC+ uses active-high enable logic: the internal switch turns ON when the EN pin voltage exceeds 1.4V (VIH), and turns OFF when EN falls below 0.4V (VIL). This matches standard 1.8V/3.3V GPIO outputs without level-shifting. The MAX20313EWC+ does not include internal pull resistors on EN, so external pull-down is recommended for default-OFF behavior.
How do I set the current limit for the MAX20313EWC+?
Set the current limit for the MAX20313EWC+ by connecting a resistor (RSETI) between the SETI pin and GND. Use RSETI = 680Ω for 6A, 2050Ω for 2A, or 8350Ω for 500mA-values are listed in Table 2 of the datasheet. The relationship follows ILIM = (1.224V × 3329)/RSETI – 12mA. Do not use RSETI < 675Ω, as it disables protection.
Does the MAX20313EWC+ provide reverse-current protection?
Yes, the MAX20313EWC+ provides dual-mode reverse-current protection: accurate blocking triggers at 1–25mV (VOUT–VIN) with 128µs debounce, and fast blocking activates at 40–110mV with 3µs response. This prevents backfeed into source rails during hot-swap or multi-supply conflicts-critical for USB and SDXC applications where OUT may briefly exceed IN.
What happens during an overcurrent event on the MAX20313EWC+?
During an overcurrent event, the MAX20313EWC+ enters continuous current-limit mode: it regulates output current at the programmed ILIM value. After the blanking time (12–18ms), FLAG asserts low. If the overload persists, thermal self-limitation reduces average current at +130°C; at +150°C, thermal shutdown forces full OFF until junction cools by ~20°C. No latchoff occurs-recovery is automatic when load normalizes.
What package type and dimensions does the MAX20313EWC+ use?
The MAX20313EWC+ uses a 12-bump wafer-level package (WLP) measuring 1.68mm × 1.48mm with 0.4mm bump pitch. Top-side marking is "ADT". It requires micro-BGA land pattern per Maxim Application Note 1891 and JEDEC-standard reflow profile (peak 260°C). The WLP enables ultra-compact placement in smartphone and modem card layouts where QFN or SOIC are too large.
MAX20313EWC+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 12-WFBGA, WLBGA
- Packaging:
- Strip
- Product Status:
- Active
- Function:
- Current Switch
- Sensing Method:
- -
- Accuracy:
- ±5%
- Voltage - Input:
- 2.5V ~ 5.5V
- Current - Output:
- 20mA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-WLP (1.65x1.45)
MAX20313EWC+ FAQ
1.How can I place an order for MAX20313EWC+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20313EWC+ 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 MAX20313EWC+ reliable?
The price and inventory of MAX20313EWC+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20313EWC+ is usually 5 days.
3.What payment methods are accepted for MAX20313EWC+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20313EWC+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20313EWC+?
MAX20313EWC+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20313EWC+ 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 MAX20313EWC+?
For technical support, including MAX20313EWC+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20313EWC+ requirements.
6.How does Aetrix verify that MAX20313EWC+ is sourced from the original manufacturer or authorized distributors?
All MAX20313EWC+ 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 MAX20313EWC+ meets industry standards.
7.What is the process for return or replacement of MAX20313EWC+?
All MAX20313EWC+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX20313EWC+, 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 MAX20313EWC+ part is unused and in its original packaging.
Return procedure for MAX20313EWC+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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