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Analog Devices Inc./Maxim Integrated MAX20333MENL+T
- Part No.:
- MAX20333MENL+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Current Regulation/Management
- Package:
- 15-XFBGA, WLBGA
- Datasheet:
-
MAX20333MENL+T.pdf
- Description:
- CLS WITH LOW POWER MODE
- Quantity:
- Payment:
- Shipping:
Inventory:3,060
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Product details
Overview
MAX20333MENL+T from Maxim Integrated is an adjustable current-limit switch with programmable overcurrent protection, low-power mode (LPM), and autoretry behavior. It operates from +3.3V to +22V input, delivers up to 4.75A in normal mode (0.2A–4.75A programmable via SETI resistor), features 23mΩ typical on-resistance, and uses a 15-bump WLP (2.1mm × 1.52mm) package for USB port protection and battery disconnect applications.
For engineers reviewing the MAX20333MENL+T datasheet, MAX20333MENL+T pinout, MAX20333MENL+T application, or MAX20333MENL+T equivalent, this page provides verified technical context, validated pin functions, confirmed LPM/autoretry operation, exact SETI-based current programming range (0.2A–4.75A), and real-world thermal shutdown behavior at 150°C - all specific to the MAX20333MENL+T variant.
Technical Context
The MAX20333MENL+T implements three distinct operational modes: Normal Mode (NM), High Current Mode (HCM), and Low Power Mode (LPM), selected via EN/EN and PG logic states per Table 1. It supports autoretry behavior with programmable blanking time (tBLANK) via external capacitor on PBT, and includes current monitoring via SETI voltage proportional to IOUT (CIRATIO = 1333 in NM).
This variant uses the PBT bump (not NVP), supports 3.3V–22V input, and enters autoretry mode when EN = low and PG = high. Its LPM quiescent current is 13–25µA, on-resistance rises to 0.42Ω (typ), and it latches off during overvoltage (VIN–VOUT > 165mV typ) in LPM - with no thermal protection active in that mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +3.3V to +22V - enables compatibility with 3.3V logic systems and industrial 24V rails. |
| Programmable Current Limit | 0.2A to 4.75A (NM) - set by resistor RSETI on SETI; supports fine-grained load protection tuning. |
| On-Resistance (NM) | 23mΩ (typ) - minimizes conduction loss and self-heating at full rated current. |
| Quiescent Current (LPM) | 13–25µA - reduces system standby power in battery-critical applications. |
| Blanking Time (PBT) | 350µs to 550ms - externally programmable via CPBT capacitor; prevents false trip during inrush. |
| Thermal Shutdown Threshold | 150°C (typ) - protects die integrity during sustained overload or poor PCB thermal design. |
| Current Monitoring Accuracy | VSETI = IOUT × RSETI / 1333 - enables real-time load current measurement using internal current mirror. |
Pinout & Package
MAX20333MENL+T uses a 15-bump Wafer-Level Package (WLP), 2.1mm × 1.52mm, with 0.4mm pitch, RoHS-compliant (N151A2+1 outline). Bump layout follows standard MAX20333 PBT-series configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (A1–A3, B1, B3) | Power Input | High-current path input; must be bypassed with ≥1μF ceramic cap near device. |
| OUT (B2, C1–C3) | Switch Output | Load-side terminal; connects to protected downstream circuitry. |
| PG (A4) | Power-Good Input | Logic-selects mode: low = HCM, high = NM (with EN = low for MAX20333MENL+T). |
| FLAG (A5) | Open-Drain Fault Flag | Asserts low on overcurrent (post-blanking), thermal fault, or SETI grounded. |
| PBT (B4) | Programmable Blanking Time | Sources 5µA; CPBT sets tBLANK = (CPBT × 1.5)/5µA + 300µS - critical for inrush immunity. |
| EN (B5) | Active-High Enable | Enables switch when high; MAX20333MENL+T uses EN (not EN) as primary control. |
| GND (C4) | Ground Reference | Common return for IN, OUT, SETI, and internal circuitry; requires low-impedance connection. |
| SETI (C5) | Current Limit Adjust & Monitor | Connect RSETI to GND to program ILIM; VSETI ∝ IOUT (1333× scaling) for analog monitoring. |
Key Features
| Feature | Design Value |
|---|---|
| Autoretry Overcurrent Response | Configured by default for MAX20333MENL+T; cycles ON/OFF with tRETRY = 30 × tBLANK to limit average fault power. |
| Low-Power Mode (LPM) | Reduces IQ to ≤25µA while retaining output short detection (VSD_THR = 165mV typ) and latchoff behavior. |
| Current Monitoring via SETI | Provides real-time IOUT readout without external sense resistor - VSETI = IOUT × RSETI / 1333. |
| Programmable Blanking Time (PBT) | External capacitor sets tBLANK from 350µs to 550ms - avoids nuisance tripping during capacitive load charging. |
| Thermal Shutdown with Hysteresis | Shuts down at 150°C (typ); resumes at 135°C (15°C hysteresis) - prevents oscillation near thermal limit. |
Applications
| USB Port Protection Switch | Battery Disconnect Switch |
|---|---|
Use Scenario: Protects host USB ports from short circuits or overloads caused by faulty peripherals or cable faults. IC Role / Device Role / Timing Role: Acts as intelligent series switch between VBUS and downstream port, enforcing current limit before damage occurs. Use Value: Prevents host system brownouts and port disable events; autoretry allows recovery without manual reset. |
Use Scenario: Safely isolates lithium-ion battery packs from system loads during fault conditions or sleep states. IC Role / Device Role / Timing Role: Serves as bidirectional disconnect switch with precise current fold-back and low-quiescent LPM for extended shelf life. Use Value: Eliminates need for discrete MOSFET + controller; 23mΩ RON minimizes voltage drop during active discharge. |
| Industrial Sensor Node Power Switch | Automotive Body Control Module (BCM) Load Driver |
Use Scenario: Enables/disables power to remote environmental sensors in field-deployed IoT nodes operating from 12V–24V supplies. IC Role / Device Role / Timing Role: Provides programmable current limiting and fault flagging for microcontroller-monitored loads. Use Value: SETI monitoring allows firmware to detect partial shorts or aging sensor resistance drift before catastrophic failure. |
Use Scenario: Drives non-critical 12V loads (e.g., interior lighting, window motors) with built-in overcurrent and thermal protection. IC Role / Device Role / Timing Role: Functions as robust, AEC-Q100-aligned (by family qualification) load switch with diagnostic FLAG output. Use Value: Replaces electromechanical relays with solid-state reliability; LPM reduces parasitic drain during vehicle key-off. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-limit switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20333LENL+T | Same PBT-based autoretry architecture and 3.3V–22V input, but configured for latchoff behavior (EN = high, PG = low). | Latchoff requires external reset after fault; unsuitable where automatic recovery is required. | Select MAX20333MENL+T when autoretry is mandatory; choose MAX20333LENL+T only if fail-safe lockout is preferred. |
| MAX20333FENL+T | Identical PBT interface and 3.3V–22V range, but factory-configured for latchoff mode (EN = high, PG = low), not autoretry. | No autoretry cycle - remains off until enable signal toggled or supply cycled. | MAX20333MENL+T is functionally distinct due to guaranteed autoretry behavior; MAX20333FENL+T serves different safety logic requirements. |
Compared with MAX20333LENL+T and MAX20333FENL+T, the MAX20333MENL+T uniquely guarantees autoretry operation without requiring firmware intervention, making it optimal for unattended USB or battery systems where fault recovery must be autonomous and deterministic.
Availability
MAX20333MENL+T is available at Aetrix Electronics and suitable for USB port protection, battery disconnect, and industrial sensor node power switching requiring stable component supply across automotive, industrial, and consumer electronics programs.
Supply support for MAX20333MENL+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) designs precision analog and mixed-signal ICs for power management, sensing, and interface applications.
The MAX20333 family targets high-reliability power-switching applications requiring programmable current limiting, low-quiescent operation, and integrated diagnostics - specifically optimized for space-constrained USB, battery, and industrial systems.
FAQ
What current-limit range does MAX20333MENL+T support, and how is it set?
The MAX20333MENL+T supports a programmable current limit from 0.2A to 4.75A in Normal Mode, set by connecting a resistor (RSETI) between the SETI pin and GND. Using the formula ILIM = 2000V / RSETI(Ω), common values include 2kΩ for 1A and 421Ω for 4.75A. The MAX20333MENL+T's internal current mirror ratio (CIRATIO = 1333) ensures accurate scaling across temperature and supply voltage.
How does the autoretry behavior of MAX20333MENL+T work during overcurrent events?
When an overcurrent condition persists beyond the blanking time (tBLANK), the MAX20333MENL+T asserts FLAG and turns OFF the switch for tRETRY = 30 × tBLANK. After tRETRY expires, it automatically retries. This cycle repeats until the fault clears. For example, with tBLANK = 12ms, tRETRY = 360ms - delivering 96.8% average power reduction during sustained faults. The MAX20333MENL+T is factory-configured for this autoretry response.
What is the role of the PBT pin on MAX20333MENL+T, and how is it used?
The PBT pin on MAX20333MENL+T sources a precise 5µA current to ground through an external capacitor (CPBT), setting the blanking time as tBLANK = (CPBT × 1.5)/5µA + 300µs. This allows designers to tune immunity to inrush currents - e.g., 330nF yields ~100ms blanking. Unlike NVP variants, MAX20333MENL+T uses PBT exclusively and has no NVP functionality.
Does MAX20333MENL+T support low-power mode, and what changes occur in that state?
Yes, MAX20333MENL+T supports Low Power Mode (LPM), entered when EN = high and PG = high. In LPM, quiescent current drops to 13–25µA, on-resistance increases to 0.42Ω (typ), thermal protection is disabled, and the switch opens immediately if VIN–VOUT exceeds 165mV (typ). The MAX20333MENL+T remains latched off until re-enabled - no autoretry occurs in LPM.
What package type and footprint does MAX20333MENL+T use, and are land patterns available?
MAX20333MENL+T uses a 15-bump Wafer-Level Package (WLP), 2.1mm × 1.52mm, 0.4mm pitch, outline number 21-100295 (package code N151A2+1). Land pattern recommendations are documented in Maxim Application Note 1891. The compact WLP enables ultra-dense PCB layouts for portable and wearable electronics where MAX20333MENL+T is commonly deployed.
MAX20333MENL+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 15-XFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Switch
- Sensing Method:
- -
- Accuracy:
- -
- Voltage - Input:
- 3.5V ~ 22V
- Current - Output:
- 4.75A
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 15-WLP (2.1x1.52)
MAX20333MENL+T FAQ
1.How can I place an order for MAX20333MENL+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20333MENL+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 MAX20333MENL+T reliable?
The price and inventory of MAX20333MENL+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20333MENL+T is usually 5 days.
3.What payment methods are accepted for MAX20333MENL+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20333MENL+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20333MENL+T?
MAX20333MENL+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20333MENL+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 MAX20333MENL+T?
For technical support, including MAX20333MENL+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20333MENL+T requirements.
6.How does Aetrix verify that MAX20333MENL+T is sourced from the original manufacturer or authorized distributors?
All MAX20333MENL+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 MAX20333MENL+T meets industry standards.
7.What is the process for return or replacement of MAX20333MENL+T?
All MAX20333MENL+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20333MENL+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 MAX20333MENL+T part is unused and in its original packaging.
Return procedure for MAX20333MENL+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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