My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1823BEUB
- Part No.:
- MAX1823BEUB
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX1823BEUB.pdf
- Description:
- DUAL USB SWITCH WITH AUTORESET
- Quantity:
- Payment:
- Shipping:
Inventory:38,408
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1823BEUB from Maxim Integrated is a dual-channel, active-high enable USB power switch with autoreset, thermal shutdown, and independent fault reporting. It delivers guaranteed 720mA per channel across 4V–5.5V input, features 165mΩ on-resistance (max), 3µA standby current, and 20ms fault blanking - deployed in notebook USB ports to protect host supplies during hot-swap capacitive load events.
For engineers reviewing the MAX1823BEUB datasheet, MAX1823BEUB pinout, MAX1823BEUB application, or MAX1823BEUB equivalent, this page provides verified electrical parameters, µMAX-10 package layout, USB-compliant current-limit behavior, reverse-current blocking in shutdown, and real-world fault-handling timing for system-level USB port design validation.
Technical Context
The MAX1823BEUB implements two independent high-side NMOS switches with integrated charge-pump gate drivers, enabling operation from 4V–5.5V without external bias. Each channel uses dual-mode current limiting: continuous 0.9A regulation when VOUT > 1V, and pulsed 0.35ARMS short-circuit mode when VOUT < 1V.
It integrates per-channel thermal shutdown (+160°C trip, 15°C hysteresis), undervoltage lockout (3.4V rising threshold), and autoreset latching that forces 25mA output current during fault and resets only after VOUT > 0.5V for 20ms - all coordinated without microcontroller intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.0V to 5.5V - compatible with standard USB 5V rail including tolerance for upstream regulator droop. |
| Continuous Load Current | 720mA per channel - meets USB 2.0 downstream port minimum current requirement. |
| On-Resistance (RON) | 165mΩ max (TA = 0°C to +85°C) - limits voltage drop to ≤117mV at 720mA, preserving downstream VBUS margin. |
| Standby Supply Current | 3µA - enables battery-backed systems to maintain USB port readiness with negligible quiescent drain. |
| Fault Blanking Timeout | 20ms (typical) - suppresses false FAULT assertions during hot-plug of compliant USB devices with up to 330µF bulk capacitance. |
| Autoreset Threshold | 0.4V to 0.6V rising - ensures reliable reset only after output recovers from short, preventing premature re-engagement. |
| Thermal Shutdown Threshold | +160°C junction (15°C hysteresis) - protects against sustained overload while permitting single-channel operation during dual-port fault. |
Pinout & Package
MAX1823BEUB is housed in a 10-pin µMAX package (3mm × 3mm, 0.5mm pitch), thermally enhanced with exposed paddle. Pin 8 (GND) connects to the exposed pad for optimal thermal dissipation and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 (ONA, ONB) | Active-high enable inputs | Drive HIGH (≥2V) to turn on respective switch; tolerate voltages up to VIN+0.3V; no external pull-up required. |
| 2, 3, 4 (INA, IN, INB) | Power input terminals | Must be shorted externally; supply all internal circuitry and charge pump; require 0.1µF ceramic bypass to GND. |
| 6, 10 (FAULTB, FAULTA) | Open-drain fault indicators | Assert LOW during UVLO, thermal shutdown, or sustained current limit (>20ms); require 100kΩ pull-up to IN. |
| 7, 9 (OUTB, OUTA) | Switched power outputs | Deliver regulated 720mA to USB peripherals; require ≥1µF ceramic capacitor to GND per output. |
| 8 | Ground | Primary signal and thermal reference; must connect to exposed paddle and system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent USB power switches | Enables simultaneous, isolated control of two USB ports with separate enable and fault signaling - critical for hub and docking station designs. |
| Autoreset latching with 25mA output current source | Automatically recovers from short-circuit faults without host µP intervention once VOUT > 0.5V for 20ms - eliminates manual reset logic. |
| Reverse current blocking in shutdown | Prevents backfeed from powered peripheral into host USB port when disabled - satisfies USB specification compliance for noncompliant loads. |
| 20ms per-channel fault blanking | Ignores transient overloads (e.g., hot-swap inrush) while retaining immediate response to thermal/UVLO faults - improves system robustness without sacrificing protection. |
| Thermal shutdown with independent channel operation | One switch can remain active even if the other enters thermal shutdown - maintains partial USB functionality during overload conditions. |
Applications
| USB Port Protection in Notebooks | Desktop PC Front-Panel USB Hubs |
|---|---|
Use Scenario: Protecting motherboard USB controllers from short circuits caused by faulty cables or peripherals plugged into user-accessible ports. IC Role / Device Role / Timing Role: High-side current-limited power switch with autoreset and open-drain FAULT signaling to BIOS/firmware. Use Value: Prevents system-wide USB bus collapse; enables automatic recovery without reboot; reduces field return rates due to port damage. |
Use Scenario: Isolating front-panel USB connectors from motherboard power rails in desktop PCs with extended cable runs. IC Role / Device Role / Timing Role: Dual-channel power distribution switch with independent ON/FAULT control per port. Use Value: Eliminates cross-talk between ports; supports hot-plug detection via FAULT deassertion delay; maintains USB spec compliance under ESD stress. |
| Docking Stations with Multiple USB Devices | Industrial USB Peripheral Controllers |
Use Scenario: Powering multiple USB peripherals (keyboard, mouse, storage) from a single dock while enforcing per-port current limits. IC Role / Device Role / Timing Role: Dual USB switch with independent current limiting, thermal monitoring, and fault reporting to dock MCU. Use Value: Enables per-port power budgeting and diagnostics; prevents overloading dock's 5V supply; simplifies firmware fault logging via FAULTA/FAULTB status. |
Use Scenario: Providing robust, field-serviceable USB connectivity in industrial HMIs where peripherals may be frequently swapped or miswired. IC Role / Device Role / Timing Role: Fault-tolerant USB power switch with latched autoreset and reverse-current blocking during maintenance disconnect. Use Value: Survives repeated short-circuit events without degradation; blocks backfeed during live servicing; extends mean time between failures (MTBF). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual USB power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2051BDBVR | Single-channel, 500mA rated, no autoreset, no fault blanking, 100mΩ RON | Lacks dual-channel integration and intelligent fault recovery - requires external logic for multi-port coordination. | Select when cost sensitivity outweighs fault autonomy and dual-channel consolidation. |
| AP2171WG-7 | Dual-channel, 700mA rated, active-low enable only, no reverse-current blocking in shutdown | Requires level-shifting for active-high control; does not block reverse current - violates USB spec for certain peripherals. | Select for legacy active-low systems where reverse-current blocking is not required. |
Compared with TPS2051BDBVR and AP2171WG-7, the MAX1823BEUB uniquely combines dual-channel active-high control, autoreset latching, reverse-current blocking, and per-channel fault blanking - enabling simpler, more robust USB port designs without external supervision or level translation.
Availability
MAX1823BEUB is available at Aetrix Electronics and suitable for notebook computers, desktop front-panel hubs, docking stations, and industrial USB peripheral controllers requiring stable component supply, long-term lifecycle support, and guaranteed USB-compliant current limiting.
Supply support for MAX1823BEUB 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 MAX1823 family targets USB power delivery with integrated protection - engineered specifically for space-constrained, battery-sensitive systems needing autonomous fault recovery and strict USB specification compliance.
FAQ
What is the enable logic polarity of MAX1823BEUB?
The MAX1823BEUB uses active-high enable inputs: ONA and ONB must be driven HIGH (≥2V) to turn on their respective switches. This differs from the MAX1823EUB (active-low) and is explicitly defined in the Pin Description section of the datasheet. The MAX1823BEUB's active-high behavior simplifies interface with most modern microcontrollers lacking dedicated open-drain GPIOs.
Does MAX1823BEUB block reverse current when disabled?
Yes, the MAX1823BEUB blocks reverse current (from OUT to IN) when disabled - a key feature confirmed in the Features list and Detailed Description. This capability satisfies USB specification requirements for noncompliant peripherals and prevents backfeed into the host supply during maintenance or peripheral removal.
What happens during a short-circuit event on MAX1823BEUB?
When a short occurs, the MAX1823BEUB enters short-circuit current-limit mode (0.35ARMS pulses), asserts FAULTA/FAULTB after 20ms blanking, latches off the output, and sources 25mA at the output. Recovery occurs automatically only after VOUT exceeds 0.5V for 20ms - ensuring the short is fully removed before re-engagement.
What is the maximum allowable output capacitance for MAX1823BEUB startup?
The MAX1823BEUB reliably starts up into ≤330µF total output capacitance without triggering fault blanking, as verified in Applications Information. Larger values may cause VOUT ramp time to exceed 20ms, resulting in autoreset activation. For >330µF loads, consider staged startup or external soft-start circuitry.
How does thermal shutdown behave on MAX1823BEUB?
The MAX1823BEUB features independent thermal shutdown per channel at +160°C (15°C hysteresis). Unlike current-limit faults, thermal faults assert FAULT immediately - no blanking delay applies. Once cooled by 15°C, the channel autoresets if the fault condition is cleared, enabling continued operation of the unaffected channel.
MAX1823BEUB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Type:
- USB Switch
- Number of Outputs:
- 2
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 4V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 720mA (Min)
- Rds On (Typ):
- 90mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge, Status Flag
- Fault Protection:
- Current Limiting (Adjustable), Over Load, Over Temperature, Reverse Current, Short Circuit, UVLO
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-uMAX
MAX1823BEUB FAQ
1.How can I place an order for MAX1823BEUB through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1823BEUB 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 MAX1823BEUB reliable?
The price and inventory of MAX1823BEUB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1823BEUB is usually 5 days.
3.What payment methods are accepted for MAX1823BEUB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1823BEUB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1823BEUB?
MAX1823BEUB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1823BEUB 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 MAX1823BEUB?
For technical support, including MAX1823BEUB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1823BEUB requirements.
6.How does Aetrix verify that MAX1823BEUB is sourced from the original manufacturer or authorized distributors?
All MAX1823BEUB 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 MAX1823BEUB meets industry standards.
7.What is the process for return or replacement of MAX1823BEUB?
All MAX1823BEUB units undergo pre-shipment inspection (PSI). If there is an issue with MAX1823BEUB, 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 MAX1823BEUB part is unused and in its original packaging.
Return procedure for MAX1823BEUB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1823BEUB Tags
-
TPS22919DCKR
Texas Instruments
-
MIC2091-1YM5-TR
Microchip Technology
-
MIC2090-1YM5-TR
Microchip Technology
-
TPS22995RZFR
Texas Instruments
-
TPS22975DSGR
Texas Instruments
-
SIP32510DT-T1-GE3
Vishay Siliconix
-
ULN2003D1013TR
STMicroelectronics
-
MIC2005A-1YM5-TR
Microchip Technology
-
MIC2005A-1YM6-TR
Microchip Technology
-
TPS22916BYFPR
Texas Instruments
-
TPS22917DBVR
Texas Instruments
-
ULN2003APWR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
