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Analog Devices Inc./Maxim Integrated MAX1558ETB
- Part No.:
- MAX1558ETB
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Specialized
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX1558ETB.pdf
- Description:
- USB SWITCHES WITH AUTORESET
- Quantity:
- Payment:
- Shipping:
Inventory:1,967
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Product details
Overview
MAX1558ETB from Maxim Integrated is a dual-channel, programmable-current USB power switch IC with autoreset fault recovery, designed for host-side USB port protection. It delivers up to 1.2A per channel, features 55mΩ on-resistance, 45µA quiescent current, and operates from 2.7V to 5.5V - enabling robust, low-power USB port management in portable computing systems.
For engineers reviewing the MAX1558ETB datasheet, MAX1558ETB pinout, MAX1558ETB application, or MAX1558ETB equivalent, this device is selected for USB 2.0-compliant hot-swap power control where accurate current limiting (±14%), reverse-current blocking, independent fault flagging, and thermal/UVLO protection are required in space-constrained 3mm × 3mm TDFN layouts.
Technical Context
The MAX1558ETB implements two independent NMOS power switches with charge-pump gate drivers, each controlled by an active-low enable (ONA/ONB). Its current-limit threshold is set externally via a single resistor (RISET = 26kΩ–60kΩ), enabling precise 0.5A–1.2A continuous limits. Fault handling includes 20ms blanking, latched-off autoreset mode, and independent open-drain FLT outputs.
Each channel integrates undervoltage lockout (2.5V threshold), thermal shutdown at +160°C (10°C hysteresis), and reverse-current blocking when disabled. The device uses BiCMOS process technology and supports capacitive load startup without false fault triggering, meeting IEC/USB electrical compliance requirements across –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 5.5V - supports full USB voltage range including 3.3V and 5V system rails. |
| Continuous Load Current | 1.2A per channel (with RISET = 26kΩ) - meets USB 2.0 high-power port specification. |
| On-Resistance | 55mΩ typical (at VIN = 5V) - minimizes voltage drop and power loss under full load. |
| Quiescent Supply Current | 45µA (both switches enabled) - extends battery life in portable USB hosts. |
| Fault-Blanking Timeout | 20ms (typical) - suppresses transient overloads during hot-plug of capacitive loads. |
| Autoreset Threshold | 0.5V output rise detection (with 20ms hold) - ensures reliable restart only after short removal. |
| Thermal Shutdown | +160°C junction temperature with 10°C hysteresis - prevents permanent damage during sustained overload. |
Pinout & Package
MAX1558ETB is housed in a 10-pin, 3mm × 3mm thin dual flat no-lead (TDFN) package with exposed thermal pad connected internally to GND. This lead-free, UL-recognized (E211395) package enables high-density PCB layout and efficient heat dissipation via the exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INA | Power input for OUTA | Shared input rail for Channel A; must be bypassed with ≥0.1µF ceramic capacitor to GND. |
| 2 ONA | Active-low enable for Switch A | Logic low enables Channel A; tolerant of voltages > IN_ (no level-shifting needed). |
| 3 ISET | Current-limit programming node | Resistor to GND (26kΩ–60kΩ) sets both channels' continuous current limit (0.5A–1.2A). |
| 4 ONB | Active-low enable for Switch B | Independent logic control for Channel B; identical interface to ONA. |
| 5 INB | Power input for OUTB | Shared input rail for Channel B; electrically tied to INA in typical USB applications. |
| 6 OUTB | Power output for Switch B | Delivers regulated 1.2A to USB Port B; requires ≥1µF local ceramic decoupling. |
| 7 FLTB | Open-drain fault indicator for B | Pulled low during UVLO, thermal shutdown, or sustained (>20ms) current-limit condition. |
| 8 GND | Analog/digital ground reference | Common return path; connects internally to exposed thermal pad. |
| 9 FLTA | Open-drain fault indicator for A | Independent fault reporting for Channel A; used for host controller interrupt signaling. |
| 10 OUTA | Power output for Switch A | Delivers regulated 1.2A to USB Port A; requires ≥1µF local ceramic decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable current limit | Single external resistor (26kΩ–60kΩ) sets identical 0.5A–1.2A limit for both channels with ±14% accuracy. |
| Autoreset recovery | After latching off due to >20ms fault, automatically re-enables when output voltage rises above 0.5V for 20ms - eliminates manual reset requirement. |
| Reverse-current blocking | Blocks current flow from OUT to IN when switches are disabled - satisfies USB specification and protects upstream supply. |
| Independent fault flags | Dedicated open-drain FLT outputs per channel allow host microcontroller to isolate and respond to individual port faults. |
| 20ms fault blanking | Ignores transient overloads (e.g., USB hot-swap inrush) - prevents spurious host interrupts and improves system reliability. |
Applications
| USB Host Port Protection | Notebook Computer USB Hub |
|---|---|
Use Scenario: Protecting downstream USB peripherals from overcurrent, short-circuit, and thermal faults in embedded host controllers. IC Role / Device Role / Timing Role: Dual-channel power switch with independent enable/fault signaling - acts as intelligent USB power gate between upstream regulator and Type-A ports. Use Value: Prevents bus-wide shutdown during single-port fault; maintains system uptime while complying with USB 2.0 electrical requirements. | Use Scenario: Managing power delivery to multiple USB peripherals (keyboard, mouse, storage) in ultra-thin laptop designs. IC Role / Device Role / Timing Role: Dual 1.2A programmable-current switch with autoreset - replaces discrete FET + sense + logic solutions in compact 3mm × 3mm footprint. Use Value: Reduces BOM count and PCB area vs. discrete implementation; enables fast, safe hot-plug operation without host software intervention. |
| Desktop PC Front-Panel USB | Industrial Docking Station |
Use Scenario: Providing protected, user-accessible USB ports on desktop front panels subject to frequent cable insertion/removal. IC Role / Device Role / Timing Role: Hot-swap power controller with 20ms fault blanking and reverse-current blocking - ensures robustness against ESD and capacitive inrush. Use Value: Eliminates need for external TVS or current-sense amplifiers; maintains stable VBUS during plug/unplug cycles per USB spec. | Use Scenario: Powering multiple peripheral modules (serial adapters, Ethernet, displays) in field-deployable docking stations. IC Role / Device Role / Timing Role: Dual independent USB power switch with thermal shutdown and UVLO - provides fail-safe isolation between host and modular expansion interfaces. Use Value: Enables graceful degradation (one port fails, other remains operational); supports wide-input 2.7V–5.5V operation for diverse power sources. |
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 | 3-channel USB 2.0 transceiver with integrated hub controller; not a standalone power switch - lacks programmable current limit and autoreset. | Designed for full USB hub functionality (data + power), not discrete port protection. | Select only if data switching and hub logic are required alongside power control. |
| TPS2051BDBVR | Single-channel 1.5A USB power switch with fixed 1.5A limit; no ISET programming, no autoreset, no reverse-current blocking. | Requires two devices for dual-port use; lacks fault recovery autonomy and USB compliance features. | Choose for cost-sensitive, non-autoreset applications where single-channel operation suffices. |
Compared with TUSB2036IRHBR and TPS2051BDBVR, the MAX1558ETB uniquely combines dual-channel operation, resistor-programmable current limit, autonomous autoreset recovery, and reverse-current blocking in a single 3mm × 3mm package - making it optimal for compact, self-healing USB port protection without added MCU supervision.
Availability
MAX1558ETB is available at Aetrix Electronics and suitable for notebook computers, USB hubs, and industrial docking stations requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX1558ETB 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 and mixed-signal ICs for power management, interface, sensing, and timing applications.
The MAX1558 product line was designed specifically for USB-compliant, dual-port power distribution with autonomous fault management - targeting portable and embedded host systems needing compact, reliable, and standards-compliant port protection.
FAQ
What is the key functional difference between MAX1558ETB and MAX1558HETB?
The MAX1558ETB uses active-low enable inputs (ONA/ONB), meaning a logic low turns each channel on. In contrast, the MAX1558HETB uses active-high enables - a logic high activates each switch. Both share identical current-limit programming, fault behavior, package, and operating specifications. The enable polarity is the sole functional distinction; they are not pin-compatible replacements.
How does the MAX1558ETB implement reverse-current blocking?
The MAX1558ETB blocks reverse current (from OUT to IN) only when both switches are disabled - achieved via internal circuitry that places outputs in high-impedance state. When enabled, the device operates bidirectionally. This blocking satisfies USB specification requirements and protects upstream supplies from backfeeding, with <0.03µA leakage measured at 5V output.
Can the MAX1558ETB drive a 500µF output capacitor without asserting a fault?
Yes - the MAX1558ETB can safely start up into ≤500µF output capacitance without triggering fault assertion, provided the capacitor charges within the 20ms fault-blanking window. This capability is validated in typical operating conditions and enables robust support for USB peripherals with large bulk capacitance, such as external HDD enclosures.
What is the purpose of the ISET pin on the MAX1558ETB?
On the MAX1558ETB, the ISET pin accepts a single external resistor (26kΩ–60kΩ to GND) that programs the continuous current-limit threshold for both channels simultaneously. Using the formula ILIM(TYPICAL) = 36400 / RISET (in ohms), designers set precise limits from 0.5A to 1.2A with ±14% accuracy - eliminating need for separate current-sense components.
Does the MAX1558ETB meet USB 2.0 electrical compliance requirements?
Yes - the MAX1558ETB meets all IEC specifications for USB ports, including overcurrent protection, voltage regulation, and hot-swap robustness. Its 55mΩ on-resistance, 20ms fault blanking, reverse-current blocking, and thermal/UVLO protections ensure full compliance with USB 2.0 power delivery and fault management requirements across –40°C to +85°C.
MAX1558ETB 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 FAQ
1.How can I place an order for MAX1558ETB through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1558ETB 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 reliable?
The price and inventory of MAX1558ETB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1558ETB is usually 5 days.
3.What payment methods are accepted for MAX1558ETB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1558ETB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1558ETB?
MAX1558ETB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1558ETB 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?
For technical support, including MAX1558ETB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1558ETB requirements.
6.How does Aetrix verify that MAX1558ETB is sourced from the original manufacturer or authorized distributors?
All MAX1558ETB 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 meets industry standards.
7.What is the process for return or replacement of MAX1558ETB?
All MAX1558ETB units undergo pre-shipment inspection (PSI). If there is an issue with MAX1558ETB, 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 part is unused and in its original packaging.
Return procedure for MAX1558ETB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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