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Analog Devices Inc./Maxim Integrated MAX1662EUB+
- Part No.:
- MAX1662EUB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Specialized
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX1662EUB+.pdf
- Description:
- IC INTERFACE SPECIALIZED 10UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,011
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Product details
Overview
MAX1662EUB+ from Maxim Integrated is a serial-to-parallel/parallel-to-serial converter and load-switch controller designed for P-channel MOSFET gate driving in power-plane switching applications. It features three +28V-tolerant bidirectional I/O pins, SMBus 2-wire interface, SMBSUS asynchronous suspend-mode register selection, 3µA quiescent current, and operates from +2.7V to +5.5V. It is used in notebook computer battery voltage-distribution switches and point-of-load power-bus control.
For engineers reviewing the MAX1662EUB+ datasheet, MAX1662EUB+ pinout, MAX1662EUB+ application, or MAX1662EUB+ equivalent, this page delivers verified technical context, real-world use cases, validated alternatives, and supply-chain support specific to the MAX1662EUB+ - not the broader MAX1661/MAX1662/MAX1663 family.
Technical Context
The MAX1662EUB+ implements a dual-register SMBus architecture where SMBSUS selects between normal and suspend data registers, enabling asynchronous power-plane reconfiguration without serial bus latency. Its I/O pins function as open-drain outputs (for driving P-MOSFET gates) or TTL-level inputs (with +28V tolerance), supporting bidirectional status readback.
It integrates hardware interrupt generation via active-low open-drain ALERT output and software START-STOP interrupts, with individually maskable I/O change detection and unmaskable thermal shutdown reporting. Power-on reset places all three I/O outputs in high-impedance state to ensure safe power-plane sequencing for P-channel MOSFETs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.7V to +5.5V - supports single-supply operation across standard logic and battery rails. |
| Quiescent Supply Current | 3µA - enables ultra-low-power operation in portable and always-on system management. |
| I/O Pin Voltage Tolerance | +28V - allows direct interfacing with battery distribution voltages without external level-shifting. |
| SMBus Interface | 2-wire, 100kHz max - compatible with standard SMBus v1.1 protocol and multi-master systems. |
| Power-On Reset State | All I/O pins high-impedance - guarantees P-MOSFETs remain off at startup for controlled power sequencing. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and mobile computing environments. |
| Package | 10-pin µMAX (3mm × 3mm) - space-constrained motherboard placement with exposed pad for thermal performance. |
Pinout & Package
MAX1662EUB+ is housed in a 10-pin µMAX package (3mm × 3mm, 0.5mm pitch) with exposed thermal pad. The package supports reflow soldering and provides low thermal resistance for sustained I/O switching.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VCC | Positive supply input | Accepts +2.7V to +5.5V; powers internal logic and I/O drivers. |
| 2 I/O1 | Bidirectional I/O (open-drain) | Drives P-MOSFET gate or reads back external signal; withstands +28V. |
| 3 I/O2 | Bidirectional I/O (open-drain) | Drives P-MOSFET gate or reads back external signal; withstands +28V. |
| 4 I/O3 | Bidirectional I/O (open-drain) | Drives P-MOSFET gate or reads back external signal; withstands +28V. |
| 5 GND | Ground reference | Return path for supply and I/O currents; connects to exposed thermal pad. |
| 6 ADD | SMBus address select | Three-state pin (GND/Hi-Z/VCC) sets one of three unique 7-bit slave addresses at POR. |
| 7 SMBSUS | Suspend-mode register selector | Low = apply suspend register to I/Os; high = apply normal register - enables async config switch. |
| 8 SMBDATA | SMBus bidirectional data line | Open-drain, Schmitt-triggered; supports multi-master arbitration and alert response. |
| 9 SMBCLK | SMBus clock input | Input-only, Schmitt-triggered; defines timing for all serial transactions. |
| 10 ALERT | Interrupt output | Active-low, open-drain; asserts on I/O state change or thermal shutdown; cleared via Alert Response read. |
Key Features
| Feature | Design Value |
|---|---|
| Dual SMBus register bank | SMBSUS pin selects between normal and suspend configuration registers - eliminates serial bus latency during power-state transitions. |
| +28V-tolerant I/Os | All three I/O pins withstand up to +28V - enables direct control of battery-switching FETs without external protection. |
| Hardware + software interrupt | ALERT pin signals faults; START-STOP software interrupt provides wire-free notification - reduces PCB routing complexity. |
| Thermal shutdown protection | Triggers at ~140°C and asserts ALERT - prevents device damage under overload or poor heatsinking. |
| Ultra-low quiescent current | 3µA typical supply current - extends battery life in always-on system management functions. |
Applications
| Power-Plane Switching | Point-of-Load Power-Bus Switching |
|---|---|
Use Scenario: Dynamic activation/deactivation of multiple voltage domains (e.g., CPU core, GPU, memory rails) during system sleep/wake transitions. IC Role / Device Role / Timing Role: Load-switch controller that translates SMBus commands into gate-drive signals for high-side P-MOSFETs. Use Value: Enables precise, sequenced power delivery with zero external components beyond pull-up resistors and FETs. |
Use Scenario: Localized on-board power rail enable/disable in compact embedded systems with tight layout constraints. IC Role / Device Role / Timing Role: Serial-to-parallel converter providing three independent, high-voltage-tolerant control outputs. Use Value: Reduces microcontroller GPIO count while maintaining direct monitoring of load status via I/O readback. |
| Notebook Battery Distribution | Desktop System Management |
Use Scenario: Controlling battery-pack isolation switches and charge-path routing in subnotebook platforms. IC Role / Device Role / Timing Role: Bidirectional I/O controller interfacing directly with +12V–+24V battery lines and SMBus host. Use Value: Eliminates need for discrete level shifters or high-voltage translators in battery management subsystems. |
Use Scenario: Managing auxiliary power rails (e.g., standby, USB-C PD negotiation, fan control) in ATX-based motherboards. IC Role / Device Role / Timing Role: SMBus slave device providing configurable, interrupt-capable power control under BIOS/UEFI firmware control. Use Value: Supports ACPI-compliant power states with hardware-enforced sequencing and fault reporting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar load-switch controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1663EUB+ | Different SMBus address (0100010 vs. 0100001); identical pinout, specs, and functionality. | No functional difference - used only when address collision requires distinct slave addressing. | Select MAX1663EUB+ only if system SMBus topology requires non-conflicting address assignment. |
| TPS22965DSGT | Single-channel, no SMBus interface; fixed 1.2V–5.5V operation; no I/O readback or interrupt capability. | Replaces discrete switching but lacks serial configurability, dual-register mode, and fault reporting. | Choose TPS22965DSGT only for simple, low-cost, single-rail enable where SMBus control is unnecessary. |
Compared with MAX1663EUB+, the MAX1662EUB+ offers identical performance but a distinct SMBus address - useful for multi-device systems. Compared with TPS22965DSGT, the MAX1662EUB+ adds full SMBus programmability, dual-register suspend mode, and hardware/software interrupt reporting - critical for complex power sequencing and diagnostics.
Availability
MAX1662EUB+ is available at Aetrix Electronics and suitable for notebook computers, point-of-load power-bus switching, and battery voltage-distribution systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX1662EUB+ 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 portable applications.
The MAX1662EUB+ belongs to Maxim's SMBus-compatible load-switch controller product line, engineered specifically for reliable, low-power, high-voltage-tolerant power-plane control in space-constrained mobile and embedded systems.
FAQ
What is the power-on reset behavior of the MAX1662EUB+?
The MAX1662EUB+ powers up with all three I/O pins (I/O1–I/O3) in high-impedance state. This ensures P-channel MOSFETs remain fully off at system startup, enabling safe, controlled power-plane sequencing. Unlike the MAX1661EUB+, which drives outputs low at POR, the MAX1662EUB+'s high-Z default is essential for preventing unintended power delivery in P-MOSFET configurations.
How does the SMBSUS pin affect MAX1662EUB+ operation?
The SMBSUS pin on the MAX1662EUB+ selects between two independent SMBus data registers: driving SMBSUS low applies the suspend-mode register to the I/O pins, while driving it high applies the normal-mode register. This allows the host to pre-load alternate power configurations and switch between them asynchronously - bypassing SMBus transaction latency during critical state transitions.
Can the MAX1662EUB+ drive N-channel MOSFETs?
No, the MAX1662EUB+ is specifically intended for P-channel MOSFET gate driving. Its I/O pins operate as open-drain outputs referenced to VCC, making them unsuitable for low-side N-MOSFET control. For N-channel applications, the MAX1661EUB+ is the designated variant - it powers up with outputs low and is optimized for N-MOSFET high-side switching with external pull-up resistors.
What is the maximum voltage the I/O pins of the MAX1662EUB+ can tolerate?
The I/O pins (I/O1, I/O2, I/O3) of the MAX1662EUB+ are rated to withstand up to +28V continuously, regardless of VCC level. This rating is specified in Absolute Maximum Ratings and verified across temperature. It enables direct connection to battery distribution buses in notebook systems without external clamping or level-shifting circuitry.
How is the SMBus address configured on the MAX1662EUB+?
The SMBus address of the MAX1662EUB+ is set by the ADD pin at power-on reset: GND = 0100001, Hi-Z = 0111101, VCC = 1001001 (all 7-bit). The address is latched at POR and remains fixed until power cycle - floating ADD must be avoided due to potential recognition issues from stray capacitance >50pF.
MAX1662EUB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Controller
- Interface:
- SMBus
- Voltage - Supply:
- 2.7V ~ 5.5V
- Supplier Device Package:
- 10-uMAX/uSOP
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
MAX1662EUB+ FAQ
1.How can I place an order for MAX1662EUB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1662EUB+ 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 MAX1662EUB+ reliable?
The price and inventory of MAX1662EUB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1662EUB+ is usually 5 days.
3.What payment methods are accepted for MAX1662EUB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1662EUB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1662EUB+?
MAX1662EUB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1662EUB+ 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 MAX1662EUB+?
For technical support, including MAX1662EUB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1662EUB+ requirements.
6.How does Aetrix verify that MAX1662EUB+ is sourced from the original manufacturer or authorized distributors?
All MAX1662EUB+ 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 MAX1662EUB+ meets industry standards.
7.What is the process for return or replacement of MAX1662EUB+?
All MAX1662EUB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1662EUB+, 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 MAX1662EUB+ part is unused and in its original packaging.
Return procedure for MAX1662EUB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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