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Analog Devices Inc./Maxim Integrated MAX1562HESA
- Part No.:
- MAX1562HESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Specialized
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX1562HESA.pdf
- Description:
- USB CURRENT-LIMITED SWITCHES
- Quantity:
- Payment:
- Shipping:
Inventory:6,655
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Product details
Overview
The MAX1562HESA from Maxim Integrated is an active-high enable, programmable 4A USB current-limited power switch for single-port hot-swap and overcurrent protection. It operates from 4V to 5.5V input, delivers up to 4A output with 26mΩ typical on-resistance, features 20ms fault blanking, autoreset recovery, and open-drain FAULT signaling - deployed in notebook USB power delivery and docking station port management.
For engineers reviewing the MAX1562HESA datasheet, MAX1562HESA pinout, MAX1562HESA application, or MAX1562HESA equivalent, this page delivers verified technical context, exact pin functions, real-world USB port protection use cases, confirmed alternative parts with functional distinctions, and supply-chain support details specific to industrial and embedded OEM design cycles.
Technical Context
The MAX1562HESA integrates a low-RON NMOS high-side switch with internal charge pump, thermal shutdown at +160°C (15°C hysteresis), and dual-mode current limiting: continuous regulation above 1V output and pulsed short-circuit mode below 1V. Its 20ms fault-blanking timer ignores transient capacitive inrush during USB hot-plug events.
Control logic uses active-high ON input (distinct from MAX1562's active-low), no SEL pin, and fixed polarity - eliminating configuration overhead. Fault reporting combines undervoltage lockout (2.9V–3.8V threshold), thermal overload, and sustained current-limit detection into a single open-drain FAULT output with immediate assertion for UVLO/thermal faults and 20ms-delayed assertion for overcurrent conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.0V to 5.5V - compatible with standard USB 5V rail and tolerant of brownout conditions down to 4V. |
| Continuous Current Limit | Programmable 1A–3A via ISET resistor - MAX1562HESA supports up to 3A (not 4A) due to 8-pin SO thermal limits. |
| On-Resistance (RON) | 26mΩ typical, 50mΩ max - enables <450mW dissipation at 3A, critical for SO-package thermal management. |
| Fault Blanking Time | 20ms typical - suppresses false FAULT assertions during USB load startup with large bypass capacitance. |
| Quiescent Current | 40µA typical - minimizes standby power draw in always-on USB hub controller systems. |
| Shutdown Current | 3µA max - ensures negligible battery drain when USB port is disabled in portable systems. |
| Thermal Shutdown Threshold | +160°C with 15°C hysteresis - provides robust self-protection during sustained overload without external sensing. |
Pinout & Package
MAX1562HESA is housed in an 8-pin SO (Small Outline) package (package code S8-2), RoHS-compliant, with exposed pad not present - thermal path relies on PCB copper area under leads.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | ON | Active-high enable input - drives high to turn on switch; pulled low or left floating disables output. |
| 2 | FAULT | Open-drain fault indicator - sinks current when UVLO, thermal shutdown, or >20ms current limit occurs. |
| 3 | GND | Power ground reference - must connect to low-impedance system ground plane for stable current sensing. |
| 4 | ISET | Current-limit programming node - connects to GND via resistor (e.g., 5.76kΩ for 3A) per ILIM = 17120 / RISET. |
| 5, 7 | IN | Power input - dual pins internally tied; requires 1µF ceramic bypass to GND within 5mm for EMI suppression. |
| 6, 8 | OUT | Switched power output - dual pins internally tied; requires 4.7µF ceramic bypass and optional bulk capacitance for USB load stability. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable current limit (1A–3A) | Set via single external resistor - eliminates need for trimming or digital interface; supports precise match to USB port rating. |
| Autoreset after fault clearance | 25mA output current source monitors VOUT - automatically restores power when short is removed and VOUT > 0.5V for 20ms. |
| 20ms fault-blanking circuitry | Hardware timer ignores transient overloads - prevents host MCU interruption during compliant USB hot-plug events. |
| Thermal-overload protection | +160°C shutdown with hysteresis - avoids thermal runaway without external sensor or firmware intervention. |
| Active-high ON control | Dedicated logic polarity - simplifies interface to GPIOs without level-shifting or inverters required by MAX1562. |
Applications
| USB Notebook Port Protection | Desktop USB Hub Power Management |
|---|---|
|
Use Scenario: Protecting individual USB ports on a thin-and-light notebook against short circuits caused by faulty peripherals or cable damage. IC Role / Device Role / Timing Role: High-side current-limited switch with autoreset - isolates faulted port while maintaining power to other ports. Use Value: Prevents system-wide USB bus collapse and enables automatic recovery without user intervention or OS driver reset. |
Use Scenario: Managing power distribution across eight downstream USB 2.0 ports in a desktop docking station. IC Role / Device Role / Timing Role: Programmable 3A switch with fault blanking - handles simultaneous hot-plug of multiple high-capacitance devices (e.g., SSD enclosures, webcams). Use Value: Eliminates false fault triggers during inrush, ensuring reliable enumeration without host-side error logging or port disablement. |
| Docking Station Port Enable/Disable | Industrial USB Peripheral Interface |
|
Use Scenario: Enabling/disabling USB power to a laptop-docked peripheral (e.g., Ethernet adapter, display adapter) via software-controlled GPIO. IC Role / Device Role / Timing Role: Active-high controlled power switch - synchronizes port power state with host OS suspend/resume sequences. Use Value: Reduces standby current to 3µA during sleep, meeting USB Battery Charging v1.2 and platform-level power budget requirements. |
Use Scenario: Providing robust USB power to field-deployed industrial peripherals (e.g., barcode scanners, serial-to-USB converters) subject to ESD and cable fault stress. IC Role / Device Role / Timing Role: Overcurrent-protected switch with thermal shutdown - sustains operation under ambient temperatures up to +85°C with no derating. Use Value: Guarantees port availability in unattended operation by latching off only during sustained faults, then auto-recovering when condition clears. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB current-limiting switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1562ESA+ | Active-low ON input; identical pinout, package, and current-limit range (1A–3A); same 20ms blanking and autoreset behavior. | Requires inverted GPIO or pull-up/pull-down rework on existing MAX1562HESA designs; otherwise drop-in for control logic redesign. | Select MAX1562ESA+ only when host MCU GPIO is constrained to active-low drive or legacy schematic reuse mandates polarity match. |
| TPS2051BDBVR | Fixed 1.5A current limit; no programmability; 70mΩ RON; no fault blanking; FAULT asserts immediately on overcurrent (no 20ms delay). | Suitable for cost-sensitive, low-power USB peripherals where inrush immunity is less critical and thermal margin is ample. | Choose TPS2051BDBVR for simple, low-BOM-count USB ports without hot-swap robustness requirements - not for high-capacitance or industrial environments. |
Compared with MAX1562ESA+, MAX1562HESA simplifies GPIO interface with active-high logic; compared with TPS2051BDBVR, it delivers programmable current limiting, fault blanking, and autoreset - essential for reliable USB port protection in notebooks and docking stations.
Availability
MAX1562HESA is available at Aetrix Electronics and suitable for notebook computers, USB hubs, and docking stations requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MAX1562HESA 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, computing, and communications applications.
The MAX1562/MAX1562H/MAX1563 family targets USB power delivery and hot-swap protection - engineered for robust fault handling, minimal external components, and seamless integration into space-constrained portable and docked systems.
FAQ
What is the maximum continuous current rating for MAX1562HESA?
The MAX1562HESA supports a programmable continuous current limit from 1A to 3A, set by an external resistor on the ISET pin. Its 8-pin SO package thermal limit restricts operation to 3A maximum - unlike the MAX1563 (4A in QFN). At 3A and 50mΩ RON, power dissipation reaches 450mW, aligning with the SO package's 471mW rating at +70°C ambient.
Does MAX1562HESA support hot-swap of USB devices without triggering false faults?
Yes. The MAX1562HESA includes dedicated 20ms hardware fault-blanking circuitry that ignores transient overcurrents during USB device insertion. When a capacitive load causes momentary inrush exceeding the programmed current limit, the FAULT output remains deasserted - preventing spurious interrupts to the host microprocessor and ensuring clean enumeration.
How does the autoreset function work in MAX1562HESA after a short-circuit event?
After a short-circuit fault persists beyond 20ms, the MAX1562HESA latches OFF and sources 25mA from OUT to detect fault clearance. If the output voltage rises above 0.5V and remains there for 20ms, the MAX1562HESA automatically re-enables the switch and deasserts FAULT. This autonomous recovery eliminates need for host MCU intervention or manual reset.
What is the role of the ISET pin on MAX1562HESA, and how is current limit calculated?
The ISET pin on MAX1562HESA sets the continuous current limit using the formula ILIM = 17120 / RISET, where RISET is the resistor value (in ohms) from ISET to GND. For example, a 5.76kΩ resistor yields ~3A. Values between 5.76kΩ and 16kΩ are supported; below 5.76kΩ risks accuracy degradation due to SO-package thermal limits.
Can MAX1562HESA be used in automotive USB applications?
No. The MAX1562HESA is specified for -40°C to +85°C operation and lacks AEC-Q200 qualification, automotive-grade ESD tolerance (±15kV contact), or extended voltage range needed for 12V automotive USB implementations. It is designed for commercial computing applications - notebooks, desktops, and docking stations - not automotive infotainment or telematics systems.
MAX1562HESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- USB
- Interface:
- USB
- Voltage - Supply:
- 4V ~ 5.5V
- Supplier Device Package:
- 8-SOIC
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
MAX1562HESA FAQ
1.How can I place an order for MAX1562HESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1562HESA 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 MAX1562HESA reliable?
The price and inventory of MAX1562HESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1562HESA is usually 5 days.
3.What payment methods are accepted for MAX1562HESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1562HESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1562HESA?
MAX1562HESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1562HESA 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 MAX1562HESA?
For technical support, including MAX1562HESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1562HESA requirements.
6.How does Aetrix verify that MAX1562HESA is sourced from the original manufacturer or authorized distributors?
All MAX1562HESA 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 MAX1562HESA meets industry standards.
7.What is the process for return or replacement of MAX1562HESA?
All MAX1562HESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX1562HESA, 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 MAX1562HESA part is unused and in its original packaging.
Return procedure for MAX1562HESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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