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Analog Devices Inc./Maxim Integrated MAX14575AETA+T
- Part No.:
- MAX14575AETA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Current Regulation/Management
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX14575AETA+T.pdf
- Description:
- IC CURRENT LIMITING 10% 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,835
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Product details
Overview
MAX14575AETA+T from Maxim Integrated is a programmable current-limit switch IC designed for high-reliability load protection in portable power rails. It features 32mΩ typical on-resistance, adjustable current limit from 250mA to 2.5A via external resistor, autoretry fault response, and reverse-current blocking - enabling robust USB port and SDXC card power management in space-constrained mobile designs.
For engineers reviewing the MAX14575AETA+T datasheet, MAX14575AETA+T pinout, MAX14575AETA+T application, or MAX14575AETA+T equivalent, key selection criteria include its active-high EN polarity, -40°C to +85°C operation, TDFN-EP package, thermal shutdown at +160°C, and FLAG output behavior during overcurrent or reverse-current events.
Technical Context
The MAX14575AETA+T implements an integrated BiCMOS current-sense and control loop with fixed 10–25ms blanking time and 320–875ms retry interval. Its SETI pin accepts a resistor (40kΩ–510kΩ) to set forward current limit with ±10% accuracy across 0.25A–2.5A range, while internal reverse-current detection triggers immediate FLAG assertion without blanking delay.
Autoretry mode cycles between fault detection, latch-off, and automatic re-enabling - reducing average power dissipation by >95% during sustained short-circuit conditions. Thermal shutdown activates at +160°C junction temperature with 20°C hysteresis, and reverse-blocking threshold is specified at 25–145mV (VOUT – VIN).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit Range | 250mA to 2.5A, set externally via RSETI; enables reuse across diverse load profiles without redesign. |
| On-Resistance (RON) | 32mΩ typical at +25°C; minimizes voltage drop and power loss in 3.3V/5V supply rails. |
| Supply Voltage Range | +2.3V to +5.5V; supports direct integration with Li-ion battery, USB, and regulated DC-DC outputs. |
| FLAG Response Threshold | 345mV (VIN – VOUT) in current-limit mode; ensures reliable fault detection before thermal stress accumulates. |
| Thermal Shutdown | +160°C junction temperature with 20°C hysteresis; prevents permanent damage during sustained overload. |
| Reverse Blocking Threshold | 25–145mV (VOUT – VVIN); blocks backfeed from downstream capacitors or powered peripherals. |
| Quiescent Current | 130µA typical; reduces standby power consumption in always-on system rails. |
Pinout & Package
MAX14575AETA+T is housed in an 8-pin, 2mm × 2mm TDFN-EP package with exposed pad connected to GND for thermal performance. The package operates over -40°C to +85°C and is RoHS-compliant (lead-free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - FLAG | Open-drain fault indicator | Asserts low on overcurrent (after blanking), reverse current, thermal shutdown, or SETI grounded - requires external pullup. |
| 2 - SETI | Current-limit programming input | Resistor-to-GND sets ILIM; grounding disables switch and asserts FLAG; max 20pF capacitance allowed. |
| 3,4 - OUT | Switch output terminals | Internally paralleled; must be connected together and bypassed with 1µF ceramic capacitor near device. |
| 5,6 - IN | Power input terminals | Internally paralleled; must be connected together and bypassed with ≥1µF ceramic capacitor near device. |
| 7 - EN | Active-high enable input | Logic high (>1.6V) enables switch; logic low (<0.4V) disables; leakage <±1µA. |
| 8 - GND | Ground reference | Primary return path for power, control, and protection circuits; connects to exposed pad. |
| EP - Exposed Pad | Thermal & electrical ground | Internally tied to GND; must be soldered to large PCB ground plane for thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Autoretry Fault Recovery | Automatically cycles enable/disable during persistent overload - reduces average power dissipation by >95% vs. continuous limiting. |
| Reverse-Current Blocking | Blocks backflow to source when VOUT > VIN + 25mV; limits reverse current to ≤2µA after trip - protects upstream regulators. |
| Programmable Current Limit | 250mA–2.5A range set by single external resistor; ±10% tolerance over temperature ensures predictable fault thresholds. |
| Low RON & Quiescent Current | 32mΩ RON minimizes I²R loss; 130µA IQ extends battery life in always-on power domains. |
| Integrated Thermal Protection | Shuts down at +160°C junction temperature with 20°C hysteresis - prevents silicon degradation during thermal runaway. |
Applications
| USB Ports | SDXC Card Power-Supply Protection |
|---|---|
Use Scenario: Protecting host-side USB ports from short-circuited or defective peripheral devices during hot-plug events. IC Role / Device Role / Timing Role: High-side current-limit switch with autoretry mode and FLAG signaling to host controller. Use Value: Prevents bus voltage collapse and host controller reset; enables graceful recovery without manual intervention. | Use Scenario: Safeguarding SDXC card slots against overcurrent during card insertion or faulty card operation. IC Role / Device Role / Timing Role: Programmable load switch with reverse-current blocking and thermal shutdown. Use Value: Eliminates risk of backfeed into host power rail; maintains card interface integrity during transient faults. |
| RF Power Amplifier in Cell Phones | UTCA/ATCA Platforms |
Use Scenario: Isolating RF PA bias rails during startup, calibration, or fault conditions to prevent supply contamination. IC Role / Device Role / Timing Role: Precision current-limited enable switch with fast 3µs current-limit reaction time. Use Value: Ensures clean PA turn-on sequence; avoids supply droop that degrades EVM or ACLR performance. | Use Scenario: Providing individually protected 3.3V/5V power domains for hot-swappable ATCA blades in telecom infrastructure. IC Role / Device Role / Timing Role: Robust current-limit switch with extended temperature rating and FLAG-based fault reporting. Use Value: Enables deterministic blade power sequencing and remote fault diagnostics without system-level interruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-limit switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14575BETA+T | Latch-off fault response (not autoretry); same RON, voltage range, and package. | Suitable where permanent disable is required after first fault - e.g., safety-critical subsystems. | Select MAX14575BETA+T only if autoretry is undesirable and manual reset is acceptable. |
| TPL7407LDR | Fixed 700mA current limit; no SETI programming; 7-channel NPN array; higher RON (~1.2Ω). | Targeted at low-current logic-level loads (LEDs, relays); not suitable for high-power USB/SDXC rails. | Choose TPL7407LDR only for multi-load, low-current digital switching - not as a functional replacement. |
Compared with MAX14575AETA+T, MAX14575BETA+T eliminates automatic recovery but simplifies fault handling in safety-locked systems, while TPL7407LDR offers channel count at the expense of programmability, current capacity, and RON performance - making MAX14575AETA+T optimal for adaptive, high-current, single-rail protection.
Availability
MAX14575AETA+T is available at Aetrix Electronics and suitable for USB port protection, SDXC card power management, RF power amplifier bias control, and UTCA/ATCA blade power distribution requiring stable component supply across industrial and mobile product lifecycles.
Supply support for MAX14575AETA+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) is a semiconductor company specializing in analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX14575 family was designed specifically for programmable, high-reliability load-switching in portable and infrastructure equipment - emphasizing low RON, precise current limiting, and intelligent fault response in miniature packages.
FAQ
What is the maximum current limit setting supported by the MAX14575AETA+T?
The MAX14575AETA+T supports a maximum current limit of 2.5A, achieved when a 53kΩ resistor is connected between the SETI pin and GND. This value is guaranteed across the full -40°C to +85°C operating temperature range with ±10% tolerance. Values above 2.5A are not supported - the device clamps at this upper limit regardless of RSETI reduction.
Does the MAX14575AETA+T provide reverse-current protection, and how does it behave?
Yes, the MAX14575AETA+T provides reverse-current protection that activates immediately when VOUT exceeds VIN by 25–145mV. Unlike forward overcurrent, no blanking time applies - the switch turns off and FLAG asserts within microseconds. Reverse current is limited to ≤2µA after tripping, and the device resumes normal operation once VOUT – VIN falls below the blocking threshold.
What is the function of the FLAG pin on the MAX14575AETA+T, and what conditions assert it?
The FLAG pin on the MAX14575AETA+T is an open-drain output that asserts low under four confirmed conditions: (1) forward overcurrent lasting longer than blanking time with VIN – VOUT > 345mV; (2) reverse-current detection; (3) junction temperature exceeding +160°C; or (4) SETI pin connected directly to GND. It requires an external pullup resistor and serves as the sole hardware fault indicator for the MAX14575AETA+T.
Can the MAX14575AETA+T operate from a 2.3V supply, and what performance changes occur at minimum voltage?
Yes, the MAX14575AETA+T is fully specified to operate from +2.3V to +5.5V. At 2.3V, RON increases to ~50mΩ (vs. 32mΩ at 5.5V), quiescent current remains ≤275µA, and current-limit accuracy holds within ±10%. The FLAG assertion threshold drops proportionally, and thermal shutdown remains active at +160°C - all parameters are guaranteed across the full voltage range per the datasheet's Electrical Characteristics table.
Is the MAX14575AETA+T pin-compatible with other variants in the MAX14575 family?
Yes, the MAX14575AETA+T shares identical 8-pin TDFN-EP packaging, pinout, and footprint with MAX14575ALETA+T, MAX14575BETA+T, and MAX14575CETA+T. All variants use the same IN/OUT/EN/FLAG/SETI/GND pin assignments and thermal pad layout. However, EN polarity (active-high vs. active-low) and fault response (autoretry vs. latch-off vs. continuous) differ - firmware and system-level fault-handling logic must be verified per variant.
MAX14575AETA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Limiting
- Sensing Method:
- High-Side
- Accuracy:
- ±10%
- Voltage - Input:
- 2.3V ~ 5.5V
- Current - Output:
- Adjustable
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
MAX14575AETA+T FAQ
1.How can I place an order for MAX14575AETA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14575AETA+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 MAX14575AETA+T reliable?
The price and inventory of MAX14575AETA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14575AETA+T is usually 5 days.
3.What payment methods are accepted for MAX14575AETA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14575AETA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14575AETA+T?
MAX14575AETA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14575AETA+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 MAX14575AETA+T?
For technical support, including MAX14575AETA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14575AETA+T requirements.
6.How does Aetrix verify that MAX14575AETA+T is sourced from the original manufacturer or authorized distributors?
All MAX14575AETA+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 MAX14575AETA+T meets industry standards.
7.What is the process for return or replacement of MAX14575AETA+T?
All MAX14575AETA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14575AETA+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 MAX14575AETA+T part is unused and in its original packaging.
Return procedure for MAX14575AETA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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