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Analog Devices Inc./Maxim Integrated MAX14523BATA+T
- Part No.:
- MAX14523BATA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Current Regulation/Management
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX14523BATA+T.pdf
- Description:
- IC CURRENT SWITCH 10% 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,406
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Product details
Overview
The MAX14523BATA+T from Maxim Integrated is a programmable current-limit switch designed for load protection in portable and automotive power rails. It features latch-off fault response, 70mΩ on-resistance, 250mA–1.5A adjustable current limit, and operates from +1.7V to +5.5V - ideal for SDIO, USB, and notebook VGA port protection.
For engineers reviewing the MAX14523BATA+T datasheet, MAX14523BATA+T pinout, MAX14523BATA+T application, or MAX14523BATA+T equivalent, key selection criteria include latch-off behavior under overcurrent, thermal shutdown at +170°C, reverse-current blocking, and TDFN-8 (3mm × 3mm) package compatibility with high-density PCB layouts.
Technical Context
The MAX14523BATA+T implements a fixed-blanking-time (10–25ms), latch-off fault response: when output current exceeds the SETI-programmed threshold for longer than tBLANK, the internal FET latches off and holds until ON is toggled or VIN is cycled. Its BiCMOS process enables precise ±10% current-limit accuracy across -40°C to +125°C.
It integrates reverse-current protection that blocks backflow to ≤2µA when VOUT > VIN + 140mV, and thermal shutdown triggers at +170°C (typ) with 15°C hysteresis. FLAG asserts open-drain low during latch-off, reverse-current trip, or thermal shutdown - requiring external pull-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit Range | 250mA to 1.5A, set by external resistor (RSETI = 563kΩ to 91.8kΩ); enables precise load tailoring without redesign. |
| On-Resistance (RON) | 70mΩ (typ) at VIN = 3.3V; minimizes dropout voltage (70mV at 1A) and power loss in battery-sensitive applications. |
| Fault Response Mode | Latch-off: output remains disabled after overcurrent until ON pin is toggled or supply cycled - prevents uncontrolled retry in persistent faults. |
| Supply Voltage Range | +1.7V to +5.5V; supports single-cell Li-ion (2.7–4.2V), USB 3.3V/5V, and automotive 3.3V/5V rails without level-shifting. |
| Thermal Shutdown | Activates at +170°C (typ), with 15°C hysteresis; protects against sustained short-circuit power dissipation in enclosed environments. |
| Reverse-Current Blocking | Blocks backflow to ≤2µA when VOUT > VIN + 140mV; eliminates need for external blocking diode in bidirectional power domains. |
| Quiescent Current | 170µA (typ) in active state; ensures minimal standby drain in always-on subsystems like GPS or cellular baseband. |
Pinout & Package
Package: 8-pin TDFN-EP (3mm × 3mm, exposed pad), RoHS-compliant, automotive-grade (-40°C to +125°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 6 | N.C. | No internal connection; must be left floating or tied to GND - no signal routing or decoupling function. |
| 2 | FLAG | Open-drain fault indicator; pulls low during latch-off, reverse-current trip, or thermal shutdown - requires external pull-up for host MCU interrupt. |
| 3 | SETI | Current-limit programming node; resistor to GND sets ILIM (250mA–1.5A); grounding disables output and asserts FLAG. |
| 4 | OUT | Switched output; connects to protected load; bypass with ≥1µF ceramic capacitor to GND for stability. |
| 5 | IN | Power input; accepts +1.7V to +5.5V; bypass with ≥1µF ceramic capacitor to GND near pin to suppress transients. |
| 7 | ON | Active-high enable control; logic-high turns switch on; toggle required to reset latch-off condition after fault. |
| 8 | GND | Analog/digital ground reference; primary return path for load current and internal circuitry. |
| EP | Exposed Pad | Internally connected to GND; must be soldered to large copper pour for thermal dissipation (θJA = 41°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Latch-off Fault Handling | Prevents uncontrolled cycling during persistent overloads - eliminates thermal stress and system instability seen in autoretry modes. |
| ±10% Accurate Current Limit | Guaranteed over full temperature range (-40°C to +125°C); reduces design margining and eliminates calibration in production test. |
| Reverse-Current Blocking | Eliminates need for discrete Schottky diode in shared-bus architectures (e.g., USB OTG, dual-power-source systems), saving board space and BOM cost. |
| Low 70mΩ RON | Enables <70mV dropout at 1A - critical for maintaining voltage compliance in low-voltage I/O rails (e.g., SDIO 1.8V/3.3V). |
| Thermal Shutdown with Hysteresis | +170°C trip / +155°C recovery ensures safe re-enabling after fault removal without oscillation or premature restart. |
Applications
| SDIO Port Protection | USB 2.0/3.0 Power Switching |
|---|---|
Use Scenario: Protecting secure digital card slots in automotive infotainment head units from hot-plug surge and card short-circuits. IC Role / Device Role / Timing Role: Load-switch controller with latch-off response prevents repeated fault events during card insertion/removal transients. Use Value: Eliminates risk of host SoC damage from SDIO bus shorts while enabling deterministic fault recovery via MCU-controlled ON pin toggle. | Use Scenario: Providing independent power control for USB peripheral ports in industrial tablets with strict power sequencing requirements. IC Role / Device Role / Timing Role: Programmable current-limited power gate between USB VBUS and downstream device, with precise 500mA/900mA limits per port. Use Value: Ensures USB-IF compliance by limiting inrush and fault current without sacrificing port density or requiring complex PMIC integration. |
| Notebook VGA Port Power Control | GPS Module Supply Protection |
Use Scenario: Isolating legacy VGA output circuitry in ruggedized notebooks from main 3.3V rail during display hot-unplug or cable fault conditions. IC Role / Device Role / Timing Role: High-side current-limit switch with latch-off behavior prevents VGA port from dragging down system rail during connector arcing. Use Value: Maintains system stability during mechanical wear-related faults, avoiding full-system reset and enabling clean software-driven port re-enable. | Use Scenario: Securing GPS receiver module supply in telematics units exposed to automotive battery transients and antenna coupling noise. IC Role / Device Role / Timing Role: Low-RON current limiter with reverse-current blocking prevents GPS module from sourcing current into noisy 3.3V domain during cold cranking. Use Value: Guarantees uninterrupted GPS lock during engine start by eliminating backfeed-induced rail collapse and false fault assertions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-limit switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14523AATA+ | Autoretry fault response (not latch-off); same pinout, package, and RON; identical SETI programming interface. | Suitable where automatic recovery from transient faults is preferred (e.g., consumer USB hubs), but unsafe for persistent faults. | Select MAX14523AATA+ only if system-level fault handling relies on retry cycles rather than deterministic manual reset. |
| TCK127G,LF | Fixed 1.2A current limit (non-adjustable); 50mΩ RON; latch-off response; 6-pin SOT-26 package; no FLAG output. | Used in space-constrained designs where current threshold is fixed and fault status monitoring is not required. | Choose TCK127G,LF when board area is critical, current limit is invariant, and host MCU does not require real-time fault reporting. |
Compared with MAX14523AATA+, the MAX14523BATA+T provides deterministic latch-off for safety-critical fault containment; compared with TCK127G,LF, it offers programmable current limit and FLAG feedback - essential for adaptive power management in automotive and industrial systems.
Availability
MAX14523BATA+T is available at Aetrix Electronics and suitable for SDIO port protection, USB power switching, and notebook VGA port isolation requiring stable component supply across automotive and industrial temperature ranges.
Supply support for MAX14523BATA+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 and mixed-signal ICs for automotive, industrial, and communications applications.
The MAX14523 family targets robust, programmable load-switching in space-constrained, thermally demanding environments - emphasizing fault containment, reverse-current immunity, and wide-input-voltage operation.
FAQ
What fault response mode does the MAX14523BATA+T implement?
The MAX14523BATA+T implements a latch-off fault response: when output current exceeds the SETI-programmed threshold for longer than the blanking time (10–25ms), the internal FET latches off and remains disabled until the ON pin is toggled or VIN is cycled. This behavior is confirmed in the Functional Diagram and Pin Configuration sections of the official datasheet, distinguishing it from the autoretry (MAX14523A) or continuous-limit (MAX14523C) variants.
How is the current limit programmed on the MAX14523BATA+T?
The current limit on the MAX14523BATA+T is programmed using an external resistor (RSETI) connected between the SETI pin and GND. The relationship follows ILIM(mA) = 141400 / (RSETI(kΩ) − 2.48), supporting 250mA to 1.5A. Values are validated in Table 2 of the datasheet, with RSETI = 563.12kΩ yielding 250mA and 91.78kΩ yielding 1500mA. Capacitance >20pF on SETI must be avoided to prevent instability.
Does the MAX14523BATA+T provide reverse-current protection?
Yes, the MAX14523BATA+T provides reverse-current protection: when VOUT exceeds VIN by more than 140mV (typ), the internal circuit blocks backflow to ≤2µA and asserts FLAG immediately - without waiting for blanking time. This feature is explicitly documented in the Absolute Maximum Ratings, Electrical Characteristics, and Detailed Description sections, and eliminates the need for external blocking diodes in bidirectional power paths.
What is the operating temperature range of the MAX14523BATA+T?
The MAX14523BATA+T is rated for operation from -40°C to +125°C, meeting automotive-grade temperature requirements. This range is guaranteed across all electrical parameters including current-limit accuracy (±10%), RON, and thermal shutdown threshold (+170°C typ). The datasheet confirms this in the Absolute Maximum Ratings, Operating Temperature Range specification, and Typical Operating Characteristics plots.
What package type and footprint does the MAX14523BATA+T use?
The MAX14523BATA+T uses an 8-pin TDFN-EP package (3mm × 3mm, exposed pad), identified by package code T833+2 and outline number 21-0137. The exposed pad is internally connected to GND and must be soldered to a large copper ground plane for thermal performance (θJA = 41°C/W). Land pattern number 90-0059 applies, and RoHS compliance is indicated by the '+' suffix.
MAX14523BATA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Switch
- Sensing Method:
- -
- Accuracy:
- ±10%
- Voltage - Input:
- 1.7V ~ 5.5V
- Current - Output:
- Adjustable
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (3x3)
MAX14523BATA+T FAQ
1.How can I place an order for MAX14523BATA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14523BATA+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 MAX14523BATA+T reliable?
The price and inventory of MAX14523BATA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14523BATA+T is usually 5 days.
3.What payment methods are accepted for MAX14523BATA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14523BATA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14523BATA+T?
MAX14523BATA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14523BATA+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 MAX14523BATA+T?
For technical support, including MAX14523BATA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14523BATA+T requirements.
6.How does Aetrix verify that MAX14523BATA+T is sourced from the original manufacturer or authorized distributors?
All MAX14523BATA+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 MAX14523BATA+T meets industry standards.
7.What is the process for return or replacement of MAX14523BATA+T?
All MAX14523BATA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14523BATA+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 MAX14523BATA+T part is unused and in its original packaging.
Return procedure for MAX14523BATA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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