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Analog Devices Inc./Maxim Integrated MAX1558ETB-T
- Part No.:
- MAX1558ETB-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Specialized
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX1558ETB-T.pdf
- Description:
- USB SWITCHES WITH AUTORESET
- Quantity:
- Payment:
- Shipping:
Inventory:4,174
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Product details
Overview
MAX1558ETB-T from Maxim Integrated is a dual-channel, programmable-current USB power switch IC with autoreset fault recovery, 55mΩ on-resistance, 1.2A continuous current per channel, and 2.7V–5.5V supply range-designed for protecting USB ports in notebook computers and docking stations.
For engineers reviewing the MAX1558ETB-T datasheet, MAX1558ETB-T pinout, MAX1558ETB-T application, or MAX1558ETB-T equivalent, this device delivers independent fault-flag outputs, reverse-current blocking when disabled, 20ms fault blanking to suppress hot-swap transients, and thermal-overload protection with independent channel shutdown-critical for robust USB power delivery in portable systems.
Technical Context
The MAX1558ETB-T integrates two independent N-channel MOSFET power switches with charge-pump gate drivers, programmable current limiting via a single external resistor (26kΩ–60kΩ), and autonomous autoreset logic that sources 30mA into a faulted output to detect short removal by monitoring VOUT > 0.5V for 20ms.
Each channel features undervoltage lockout (2.5V threshold, 3% hysteresis), open-drain FLTA/FLTB fault indicators, and bidirectional conduction when enabled-but blocks reverse current (OUT→IN) when disabled. Thermal shutdown activates at +160°C with 10°C hysteresis, and fault blanking ignores transient overloads lasting ≤20ms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - supports full USB 2.0 bus voltage range and battery-backed operation down to single-cell Li-ion minimum. |
| Continuous Load Current | 1.2A per channel (RISET = 26kΩ) - meets USB 2.0 high-power port specification without derating at +85°C. |
| On-Resistance (RON) | 55mΩ (typ, VIN = 5V) - limits I²R loss to <78mW at 1.2A, enabling compact thermal design in 3mm × 3mm TDFN. |
| Fault Blanking Timeout | 20ms (typ) - suppresses false faults during capacitive load hot-plug events, preventing host system interruption. |
| Quiescent Supply Current | 45µA (both switches enabled) - minimizes standby drain in always-on USB charging paths. |
| Standby Supply Current | 3µA (both switches disabled) - extends battery life in sleep-mode portable devices. |
| Autorestart Threshold | 0.4V–0.6V (rising VOUT) - ensures reliable restart only after short-circuit clearance, avoiding premature re-engagement. |
Pinout & Package
MAX1558ETB-T is housed in a 10-pin, 3mm × 3mm thin dual-flat no-lead (TDFN) package with exposed thermal pad connected internally to GND. The package supports high-density PCB layouts and efficient heat dissipation via the exposed pad soldered to a large copper plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INA | Power Input A | Main input supply for Channel A; must be tied to INB and bypassed with ≥0.1µF ceramic capacitor to GND. |
| 2 ONA | Enable Input A (active-low) | Logic low enables Channel A (MAX1558 variant); tolerates voltage up to VIN+0.3V without damage. |
| 3 ISET | Current-Limit Programming | Resistor from ISET to GND sets both channels' current limit (26kΩ → 1.2A; 60kΩ → 0.5A). |
| 4 ONB | Enable Input B (active-low) | Logic low enables Channel B; independent control allows asymmetric USB port management. |
| 5 INB | Power Input B | Main input supply for Channel B; electrically tied to INA in typical application. |
| 6 OUTB | Power Output B | Switched 5V output for USB Port B; requires ≥1µF ceramic capacitor to GND for noise immunity. |
| 7 FLTB | Fault Indicator B | Open-drain output pulled low during UVLO, thermal shutdown, or sustained (>20ms) current-limit/short-circuit. |
| 8 GND | Ground Reference | Common return for power, logic, and fault signals; connects to exposed thermal pad. |
| 9 FLTA | Fault Indicator A | Independent open-drain fault flag for Channel A; enables per-port USB controller diagnostics. |
| 10 OUTA | Power Output A | Switched 5V output for USB Port A; decoupled identically to OUTB for EMI compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable current limit | Adjustable from 0.5A to 1.2A per channel using single external resistor-enables precise USB port current budgeting across varying loads. |
| Autoreset recovery | Automatically re-enables channel after fault clearance detection (VOUT > 0.5V for 20ms)-eliminates manual reset requirement in embedded USB hubs. |
| Reverse-current blocking | Prevents backflow from OUT to IN when disabled-ensures strict USB compliance and protects upstream power sources from noncompliant peripherals. |
| 20ms fault blanking | Ignores transient overloads during hot-swap of capacitive loads-avoids false fault assertions that would disrupt host enumeration or charging handshakes. |
| Independent thermal shutdown | Each channel shuts down autonomously at +160°C junction temperature-maintains power to unaffected USB port during localized overload. |
Applications
| USB Hub Power Management | Notebook USB Port Protection |
|---|---|
Use Scenario: Dual-port USB 2.0 hub requiring independent overcurrent protection and fault reporting per downstream port. IC Role / Device Role / Timing Role: Dual-channel power switch providing per-port enable/disable control, current limiting, and open-drain fault signaling to hub controller. Use Value: Enables hot-plug resilience with 20ms fault blanking and autoreset-reducing firmware complexity and eliminating need for host-initiated port resets. |
Use Scenario: Notebook motherboard implementing USB-A ports with strict power budgeting and thermal safety margins. IC Role / Device Role / Timing Role: USB power delivery switch with independent thermal shutdown and reverse-current blocking to meet OEM reliability requirements. Use Value: Prevents system-level brownout during simultaneous peripheral attach and blocks backfeed from powered accessories-ensuring platform stability. |
| Docking Station USB Charging | Industrial USB Peripheral Interface |
Use Scenario: Docking station supplying power to multiple USB peripherals (keyboard, mouse, storage) with varying startup currents. IC Role / Device Role / Timing Role: Programmable-current USB switch managing inrush current and sustaining 1.2A per port under sustained load. Use Value: Adjustable current limit (via ISET resistor) allows optimization for fast-charging devices while maintaining safe thermal operation in confined enclosure space. |
Use Scenario: Ruggedized industrial tablet with USB ports exposed to ESD and cable-induced inductive transients. IC Role / Device Role / Timing Role: Fault-tolerant USB power switch with 15kV ESD protection (with capacitor), reverse-blocking, and independent fault flags. Use Value: Ensures uninterrupted operation in harsh environments-thermal shutdown and autoreset prevent latch-up during accidental shorts or connector arcing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TUSB2036IRHBR | Integrated USB 2.0 hub controller + power switches; 500mA fixed current limit per port; no programmable ISET or autoreset. | Requires full hub functionality-not suitable for standalone power switching where only port protection is needed. | Select MAX1558ETB-T when discrete, high-current (1.2A), programmable USB power switching with autonomous fault recovery is required. |
| TPS2051BDBVR | Single-channel 1.5A USB switch; no fault blanking, no autoreset, no reverse-current blocking; 110mΩ RON. | Lacks dual-channel integration and per-port fault reporting-requires two devices and additional logic for dual-port designs. | Choose MAX1558ETB-T for space-constrained dual-port applications needing coordinated fault handling and lower on-resistance (55mΩ vs. 110mΩ). |
Compared with TUSB2036IRHBR and TPS2051BDBVR, the MAX1558ETB-T uniquely combines dual-channel 1.2A programmability, 20ms fault blanking, autoreset, and reverse-current blocking in a single 3mm × 3mm package-reducing BOM count and simplifying USB port protection architecture.
Availability
MAX1558ETB-T is available at Aetrix Electronics and suitable for notebook computers, USB docking stations, and industrial embedded USB interfaces requiring stable component supply and long-term lifecycle support.
Supply support for MAX1558ETB-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 high-performance analog, mixed-signal, and power management ICs for industrial, computing, and communications markets.
The MAX1558ETB-T belongs to Maxim's USB power distribution product line, engineered specifically for robust, programmable, and fault-resilient USB port protection in portable and embedded systems.
FAQ
What is the maximum continuous current per channel for the MAX1558ETB-T?
The MAX1558ETB-T supports up to 1.2A continuous current per channel when configured with a 26kΩ resistor from ISET to GND. This value is guaranteed over the full -40°C to +85°C operating temperature range and meets USB 2.0 high-power port specifications. Higher resistance values reduce the current limit linearly-e.g., 39kΩ yields ~0.925A, and 60kΩ yields ~0.6A.
How does the MAX1558ETB-T handle short-circuit faults?
When a short circuit persists beyond the 20ms fault-blanking period, the MAX1558ETB-T latches the affected channel off and asserts the corresponding FLT pin low. It then sources 30mA into the shorted output to monitor VOUT; if voltage rises above 0.5V for 20ms, the channel automatically restarts. This autoreset behavior eliminates manual intervention and maintains system uptime.
Does the MAX1558ETB-T provide reverse-current protection?
Yes-the MAX1558ETB-T blocks reverse current flow from OUT to IN when disabled, satisfying USB specification requirements. This is achieved through internal circuitry that places each output in a high-impedance state during disable. However, when enabled, the device operates as a bidirectional switch, allowing forward conduction only.
What package type and dimensions does the MAX1558ETB-T use?
The MAX1558ETB-T uses a 10-pin thin dual-flat no-lead (TDFN) package measuring 3.0mm × 3.0mm with 0.5mm pitch. It includes an exposed thermal pad connected internally to GND, which must be soldered to a PCB copper pour for optimal thermal performance and power dissipation up to 1952mW at +70°C ambient.
Can the MAX1558ETB-T operate from a 3.3V supply?
Yes-the MAX1558ETB-T operates across a 2.7V to 5.5V supply range, making it compatible with both 3.3V and 5V USB power rails. At 3.3V input, the typical on-resistance increases to 64mΩ, and quiescent current remains within specification (≤75µA), ensuring reliable operation in mixed-voltage embedded systems.
MAX1558ETB-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- USB
- Interface:
- USB
- Voltage - Supply:
- 2.75V ~ 5.5V
- Supplier Device Package:
- 10-TDFN-EP (3x3)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
MAX1558ETB-T FAQ
1.How can I place an order for MAX1558ETB-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1558ETB-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 MAX1558ETB-T reliable?
The price and inventory of MAX1558ETB-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1558ETB-T is usually 5 days.
3.What payment methods are accepted for MAX1558ETB-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1558ETB-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1558ETB-T?
MAX1558ETB-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1558ETB-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 MAX1558ETB-T?
For technical support, including MAX1558ETB-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1558ETB-T requirements.
6.How does Aetrix verify that MAX1558ETB-T is sourced from the original manufacturer or authorized distributors?
All MAX1558ETB-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 MAX1558ETB-T meets industry standards.
7.What is the process for return or replacement of MAX1558ETB-T?
All MAX1558ETB-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1558ETB-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 MAX1558ETB-T part is unused and in its original packaging.
Return procedure for MAX1558ETB-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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