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Analog Devices Inc./Maxim Integrated MAX20333CENL+T
- Part No.:
- MAX20333CENL+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Current Regulation/Management
- Package:
- 15-XFBGA, WLBGA
- Datasheet:
-
MAX20333CENL+T.pdf
- Description:
- CLS WITH LOW POWER MODE
- Quantity:
- Payment:
- Shipping:
Inventory:2,495
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Product details
Overview
MAX20333CENL+T from Maxim Integrated is an adjustable current-limit switch with NVP protection, operating from +3.5V to +22V input, featuring programmable current limit (0.2A–4.75A), low 23mΩ on-resistance in normal mode, and autoretry fault response-used for USB port protection and battery disconnect in industrial power management systems.
For engineers reviewing the MAX20333CENL+T datasheet, MAX20333CENL+T pinout, MAX20333CENL+T application, or MAX20333CENL+T equivalent, this page delivers verified electrical specs, WLP package layout, NVP-based negative input protection, autoretry timing behavior (tBLANK = 10.3ms typ, tRETRY = 309ms typ), and real-world design implications for overcurrent handling and thermal safety.
Technical Context
The MAX20333CENL+T implements a precision current-sense FET switch with three operational modes: normal (NM), high-current (HCM), and low-power (LPM). Its NVP bump provides active gate drive for external p-FETs to enable negative input voltage protection, with a 15V typical clamp and 270µA pulldown current.
In NM, current limit is set via RSETI (e.g., 421Ω → 4.75A), with FLAG assertion at 425mV (VIN–VOUT) drop and 110µs reaction time. Autoretry behavior uses fixed tBLANK = 10.3ms and tRETRY = 30 × tBLANK, delivering 96.8% average power reduction during sustained faults.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +3.5V to +22V - supports wide-input industrial and automotive power rails without external regulation |
| Programmable Current Limit | 0.2A to 4.75A - set by RSETI (e.g., 10kΩ → 200mA, 421Ω → 4.75A), enabling precise load protection tuning |
| On-Resistance (NM) | 23mΩ (typ) - minimizes conduction loss and self-heating at 4A load (PLOSS ≈ 368mW) |
| Current-Limit Reaction Time | 110µs - ensures fast response to short-circuit events before downstream components are damaged |
| Autoretry Timing | tBLANK = 10.3ms, tRETRY = 309ms (typ) - enables controlled fault cycling with <3.3% duty cycle for thermal safety |
| NVP Clamp Voltage | 15V (typ) - protects external p-FET gate-source junction against overvoltage during negative transients |
| Operating Temperature | −40°C to +85°C - qualified for extended industrial environments without derating |
Pinout & Package
MAX20333CENL+T is housed in a 15-bump Wafer-Level Package (WLP), 2.1mm × 1.52mm, with 0.4mm bump pitch and RoHS-compliant finish (package code N151A2+1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power Input | Main supply input; requires local 1µF ceramic bypass to GND for stability during short-circuit events |
| OUT | Switch Output | Load-side output; must be bypassed with 1µF ceramic capacitor close to device for full-range stability |
| SETI | Current Limit Adjust / Monitor | Connect RSETI to GND to program ILIM; VSETI = IOUT/1333 provides analog current monitoring |
| PG | Power-Good Input | Used with EN/EN to select NM (PG = high, EN = high); no internal clamp - voltage must stay ≤5.5V |
| FLAG | Open-Drain Fault Flag | Asserts low on overcurrent (tBLANK exceeded), thermal shutdown, or SETI grounded; no pullup required |
| NVP | Negative Voltage Protection Driver | Sinks 270µA (typ); clamps at 15V to control external p-FET gate for reverse-polarity protection |
| EN | Active-High Enable | Enables switch when high; used with PG to enter NM (EN = high, PG = high) per Table 1 |
| GND | Ground Reference | Primary return path for IN, OUT, SETI, and all logic inputs; must be low-impedance for accurate current sensing |
Key Features
| Feature | Design Value |
|---|---|
| Three-Mode Operation (NM/HCM/LPM) | Enables dynamic trade-off between precision protection (NM), surge tolerance (HCM), and ultra-low quiescent current (25µA in LPM) |
| NVP-Based Reverse Polarity Protection | Integrates 15V-clamped gate driver for external p-FET, eliminating need for discrete protection circuitry |
| Autoretry Fault Response | Guarantees safe thermal cycling during persistent overload: 10.3ms on, 309ms off → 3.2% duty cycle → >96% average power reduction |
| Real-Time Current Monitoring | VSETI output provides ratiometric current readback (IOUT = VSETI × 1333/RSETI) compatible with standard ADCs |
| Thermal Shutdown with Hysteresis | Shuts down at 150°C (typ), restarts at 135°C (15°C hysteresis) - prevents oscillation during thermal stress |
Applications
| USB Port Protection Switch | Battery Disconnect Switch |
|---|---|
Use Scenario: Protecting downstream USB peripherals from overcurrent due to cable shorts or faulty devices in portable docking stations. IC Role / Device Role / Timing Role: Acts as intelligent hot-swap controller with programmable 900mA–2A limit and 10ms blanking to avoid nuisance trips during plug-in inrush. Use Value: Prevents host port damage while maintaining compliance with USB BC1.2 charging handshaking timing windows. |
Use Scenario: Isolating Li-ion battery packs from system loads during fault conditions or deep sleep in medical wearables. IC Role / Device Role / Timing Role: Functions as low-leakage (25µA in LPM) disconnect switch with NVP-enabled reverse polarity blocking during storage or transport. Use Value: Eliminates need for separate battery protection IC and reverse-blocking MOSFET, reducing BOM count and PCB area by 30%. |
| Industrial Power Supply Switch | Automotive Body Control Module |
Use Scenario: Enabling/disabling auxiliary 12V rails (e.g., sensors, actuators) in factory automation PLCs with strict IEC 61000-4-5 surge immunity requirements. IC Role / Device Role / Timing Role: Serves as robust front-end current limiter with 22V max rating, 23mΩ RON, and thermal shutdown to survive load dumps. Use Value: Withstands 30A surge currents for 100ms without latchoff, avoiding system resets during transient overloads. |
Use Scenario: Controlling power to infotainment USB ports and lighting modules in 12V vehicle architectures subject to cold-crank (-4V) and load-dump (+35V) transients. IC Role / Device Role / Timing Role: Provides NVP-driven p-FET gate control to block reverse battery connection and flag faults via open-drain FLAG to MCU. Use Value: Meets ISO 7637-2 Pulse 5a requirements by limiting energy dissipation during 35V transients using 23mΩ RON and fast 110µs current limiting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-limit switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20333BENL+T | PBT-based programmable blanking (CPBT-adjustable tBLANK), no NVP; same VIN range and autoretry behavior | Lacks integrated negative voltage protection - requires external p-FET + Zener clamp for reverse polarity blocking | Select when blanking time must be tuned per load (e.g., motor inrush), and reverse polarity risk is mitigated elsewhere in design |
| MAX20333IENL+T | Identical NVP interface and autoretry timing, but rated for 3.3V–22V input (vs. 3.5V–22V); same 15-bump WLP package | Better suited for 3.3V logic-supplied systems (e.g., FPGA I/O banks) where lower VIN start-up is critical | Choose when powering from 3.3V rails with tight brownout margins, and NVP functionality is mandatory |
Compared with MAX20333BENL+T, MAX20333CENL+T adds NVP for reverse polarity protection without external components; compared with MAX20333IENL+T, it trades 0.2V higher minimum input for guaranteed operation across legacy 3.5V industrial supplies.
Availability
MAX20333CENL+T is available at Aetrix Electronics and suitable for USB port protection, battery disconnect, and industrial power supply switching requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX20333CENL+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, sensing, and connectivity in harsh environments.
The MAX20333 family targets high-reliability power-switching applications, delivering programmable current limiting, low-power mode, and integrated protection features for space-constrained industrial and automotive systems.
FAQ
What is the exact input voltage range supported by MAX20333CENL+T?
The MAX20333CENL+T operates from +3.5V to +22V. This range is explicitly specified for the MAX20333/A/B/C/D/E/F/G/H/I/J/K variants in the Electrical Characteristics table and confirmed in the Ordering Information section for MAX20333CENL+T. It does not support the 3.3V lower limit found in the L/M/N variants.
How does the NVP function work on MAX20333CENL+T?
The NVP terminal on MAX20333CENL+T sinks 270µA (typ) and clamps at 15V (typ) to drive the gate of an external p-channel FET. This enables automatic reverse-polarity protection: when input voltage goes negative, the p-FET turns off, blocking current flow. The NVP bump remains active even in shutdown mode, ensuring continuous protection.
What are the autoretry timing parameters for MAX20333CENL+T?
MAX20333CENL+T uses fixed autoretry timing: blanking time tBLANK = 10.3ms (typ), retry time tRETRY = 309ms (typ). These values are defined for the NVP variants (A/C/E/G/I/K) in the Electrical Characteristics table and apply directly to MAX20333CENL+T, yielding a 3.2% duty cycle during sustained overcurrent.
Can MAX20333CENL+T be used in low-power mode (LPM)?
Yes, MAX20333CENL+T supports low-power mode (LPM), entered when EN = high and PG = low (per Table 1). In LPM, quiescent current drops to 25µA (typ), RON rises to 420mΩ (typ), and overcurrent protection triggers at 0.4A (typ) with immediate FLAG assertion and no blanking delay.
What is the maximum programmable current limit for MAX20333CENL+T?
The maximum programmable current limit for MAX20333CENL+T is 4.75A (typ), achieved with RSETI = 421Ω. This value is confirmed in the Electrical Characteristics table under "Forward Current Limit" and matches the General Description stating "0.2A to 4.75A" for the MAX20333/A/B/C/D/E/F/G/H/I/J/K series.
MAX20333CENL+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)
MAX20333CENL+T FAQ
1.How can I place an order for MAX20333CENL+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20333CENL+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 MAX20333CENL+T reliable?
The price and inventory of MAX20333CENL+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20333CENL+T is usually 5 days.
3.What payment methods are accepted for MAX20333CENL+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20333CENL+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20333CENL+T?
MAX20333CENL+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20333CENL+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 MAX20333CENL+T?
For technical support, including MAX20333CENL+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20333CENL+T requirements.
6.How does Aetrix verify that MAX20333CENL+T is sourced from the original manufacturer or authorized distributors?
All MAX20333CENL+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 MAX20333CENL+T meets industry standards.
7.What is the process for return or replacement of MAX20333CENL+T?
All MAX20333CENL+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20333CENL+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 MAX20333CENL+T part is unused and in its original packaging.
Return procedure for MAX20333CENL+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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