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Analog Devices Inc./Maxim Integrated MAX20333GENL+T
- Part No.:
- MAX20333GENL+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Current Regulation/Management
- Package:
- 15-XFBGA, WLBGA
- Datasheet:
-
MAX20333GENL+T.pdf
- Description:
- IC CURRENT SWITCH 15WLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,814
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Product details
Overview
MAX20333GENL+T from Maxim Integrated is a programmable current-limit switch with NVP (Negative Voltage Protection) bump, latchoff fault behavior, and 3.5V–22V input range. It delivers 23mΩ typical on-resistance in normal mode, supports 0.2A–4.75A programmable current limit via SETI resistor, and operates across –40°C to +85°C in a 15-bump WLP (2.1mm × 1.52mm). It is used for USB port protection and battery disconnect in industrial power management systems.
For engineers reviewing the MAX20333GENL+T datasheet, MAX20333GENL+T pinout, MAX20333GENL+T application, or MAX20333GENL+T equivalent, this page provides verified functional identity, validated pin mapping, confirmed latchoff-mode behavior, NVP-based negative input protection, and precise thermal shutdown thresholds - all specific to MAX20333GENL+T per Maxim's Rev 4 datasheet.
Technical Context
The MAX20333GENL+T implements a precision unidirectional current-limiting FET with three operating 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 15V typical clamp voltage and 270µA pulldown current.
It uses EN (active-high) and PG inputs to select latchoff-mode operation per Table 1, and features open-drain FLAG output asserting on overcurrent (after blanking time), thermal shutdown (>150°C), or SETI grounded. Current monitoring is enabled via SETI voltage proportional to IOUT with CIRATIO = 1333 in NM.
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. |
| On-Resistance (NM) | 23mΩ (typ) - enables <100mV drop at 4A, minimizing conduction loss and thermal rise. |
| Programmable Current Limit | 0.2A to 4.75A - set by resistor from SETI to GND; e.g., 421Ω yields 4.75A in normal mode. |
| Fault Response Mode | Latchoff - disables output permanently after overcurrent exceeds blanking time; requires EN/PG cycling to reset. |
| NVP Function | External p-FET gate drive with 15V clamp - protects against negative transients down to –24V input. |
| Thermal Shutdown | 150°C (typ), 15°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
| Package & Temp Range | 15-bump WLP (2.1mm × 1.52mm), –40°C to +85°C - suitable for space-constrained embedded and portable designs. |
Pinout & Package
MAX20333GENL+T is housed in a 15-bump Wafer-Level Package (WLP), outline N151A2+1, with 2.1mm × 1.52mm footprint and 0.4mm bump pitch. Land pattern follows Application Note 1891.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (A1–A3, B1, B3) | Power Input | High-current path input; must be bypassed with ≥1µF ceramic capacitor close to device. |
| OUT (B2, C1–C3) | Switch Output | Current-limited output node; connects to protected load; requires local 1µF bypass. |
| EN (B5) | Active-High Enable | Drives internal FET gate when high; sets latchoff mode with PG=high per truth table. |
| PG (A4) | Power-Good Input | Configures mode selection: EN=high & PG=high → Normal Mode; EN=high & PG=low → HCM; EN=low & PG=high → LPM. |
| FLAG (A5) | Open-Drain Fault Flag | Asserts low on overcurrent (latchoff), thermal shutdown, or SETI grounded; requires external pullup. |
| NVP (B4) | Negative Voltage Protection Driver | Sinks 270µA (typ); clamps at 15V to control external p-FET gate for reverse-polarity protection. |
| GND (C4) | Ground Reference | Primary return path for IN, OUT, SETI, and internal bias; must be low-impedance connection. |
| SETI (C5) | Current Limit Adjust & Monitor | Voltage proportional to IOUT (CIRATIO = 1333); resistor to GND programs ILIM; max 1.6V input. |
Key Features
| Feature | Design Value |
|---|---|
| Latchoff Fault Behavior | Output latches off after overcurrent exceeds blanking time; eliminates repeated stress on load and FET. |
| NVP-Based Reverse Polarity Protection | Enables robust –24V input tolerance using external p-FET; no additional controller IC required. |
| Three-Mode Operation (NM/HCM/LPM) | Single device supports full-range current limiting (0.2–4.75A), doubled limit (up to 5.5A), and ultra-low-quiescent (25µA) standby. |
| Integrated Current Monitoring | SETI voltage directly scales with IOUT (1.5V per 2000A), enabling real-time load diagnostics via MCU ADC. |
| Thermal Shutdown with Hysteresis | Shuts down at 150°C and re-enables only after cooling to 135°C, preventing oscillation near thermal limit. |
Applications
| USB Port Protection Switch | Battery Disconnect Switch |
|---|---|
Use Scenario: Protecting downstream USB peripherals from short-circuit or overcurrent events on host-side VBUS rail. IC Role / Device Role / Timing Role: Primary current-limiting switch placed between USB power source and connector; responds within 110µs to overcurrent. Use Value: Prevents bus collapse and host damage while maintaining UL 2367 recognition for safety-critical ports. |
Use Scenario: Isolating Li-ion battery from system during fault, storage, or firmware update. IC Role / Device Role / Timing Role: High-reliability disconnect switch with latchoff behavior ensures fail-safe open-circuit state until explicit reset. Use Value: Eliminates parasitic drain in storage mode (<25µA quiescent in LPM) and blocks reverse current during battery swap. |
| Industrial Power Supply Sequencing | Automotive Body Control Module (BCM) |
Use Scenario: Enabling controlled power-up of sub-systems (e.g., sensors, actuators) with current supervision and fault logging. IC Role / Device Role / Timing Role: Programmable current limiter with FLAG-driven interrupt to MCU; supports multiple ILIM thresholds via resistor selection. Use Value: Enables deterministic startup sequencing and early-fault detection before downstream components are stressed. |
Use Scenario: Protecting 12V accessory circuits (e.g., window lift, mirror controls) from wiring shorts or ESD-induced latchup. IC Role / Device Role / Timing Role: Robust front-end switch with NVP support for reverse-battery survivability and thermal resilience up to +85°C ambient. Use Value: Meets automotive transient immunity requirements (ISO 7637-2) without external TVS or protection FETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-limit switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20333DENL+T | PBT bump instead of NVP; continuous (not latchoff) fault behavior; same 3.5V–22V range and 23mΩ RON. | Used where sustained current limiting is preferred over latching (e.g., motor drivers with intermittent stall). | Select MAX20333DENL+T if system requires uninterrupted current delivery during overload, not hard shutdown. |
| MAX20333FENL+T | PBT bump; latchoff behavior; identical electrical specs but different enable logic (EN active-low, PG inverted vs. MAX20333GENL+T). | Suitable for legacy designs using active-low enable architecture and programmable blanking time (PBT) instead of NVP. | Choose MAX20333FENL+T only when PBT-based timing control is needed and NVP functionality is unnecessary. |
Compared with MAX20333DENL+T and MAX20333FENL+T, MAX20333GENL+T uniquely combines NVP-based reverse-polarity protection with latchoff behavior - critical for battery-backed and field-serviceable systems requiring guaranteed open-circuit safety after fault.
Availability
MAX20333GENL+T is available at Aetrix Electronics and suitable for USB port protection, battery disconnect, and industrial power supply switching requiring stable component supply, RoHS-compliant packaging, and guaranteed -40°C to +85°C operation.
Supply support for MAX20333GENL+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 interface applications, with emphasis on reliability and integration.
The MAX20333 family targets high-accuracy, programmable current-limit protection in space-constrained systems - specifically engineered for USB, battery, and industrial power rail protection with multi-mode flexibility.
FAQ
What is the function of the NVP pin on MAX20333GENL+T?
The NVP pin on MAX20333GENL+T drives the gate of an external p-channel MOSFET to provide negative input voltage protection. It sinks 270µA (typ) and clamps at 15V (typ), enabling robust reverse-polarity survival down to –24V input. This feature is exclusive to MAX20333GENL+T and other NVP variants (e.g., MAX20333AENL+T), and is absent in PBT versions like MAX20333DENL+T.
How does the latchoff behavior of MAX20333GENL+T differ from autoretry or continuous modes?
MAX20333GENL+T enters latchoff mode when overcurrent persists beyond the blanking time: the switch opens permanently and FLAG asserts low until EN or PG is cycled. Unlike autoretry (which pulses on/off) or continuous (which sustains current limit), latchoff guarantees zero output current after fault - essential for safety-critical battery disconnect. This behavior is fixed for MAX20333GENL+T per its ordering code.
What resistor value on SETI sets a 2.0A current limit for MAX20333GENL+T?
A 1000Ω resistor from SETI to GND sets a 2.0A current limit in normal mode for MAX20333GENL+T, calculated using ILIM = 2000V / RSETI(Ω). This value is confirmed in Table 2 of the datasheet and applies specifically to MAX20333GENL+T in NM (EN=high, PG=high). Using RSETI < 350Ω disables the switch and asserts FLAG.
Does MAX20333GENL+T support thermal shutdown in low-power mode (LPM)?
No, MAX20333GENL+T disables thermal shutdown in low-power mode (LPM) - a documented design feature to reduce quiescent current to 25µA (typ). In LPM, overtemperature protection is inactive; instead, the device opens the switch if VIN–VOUT exceeds 165mV (typ) and holds it open until reset. Thermal shutdown (150°C threshold) operates only in normal and high-current modes.
Can MAX20333GENL+T be used with a 3.3V input supply?
No, MAX20333GENL+T is specified for +3.5V to +22V input only, as stated in the Absolute Maximum Ratings and Electrical Characteristics tables. For 3.3V operation, Maxim specifies the MAX20333L/M/N variants (e.g., MAX20333LENL+T), which have a lower 3.3V minimum input. Using MAX20333GENL+T below 3.5V may result in undefined behavior or failure to enable.
MAX20333GENL+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)
MAX20333GENL+T FAQ
1.How can I place an order for MAX20333GENL+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20333GENL+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 MAX20333GENL+T reliable?
The price and inventory of MAX20333GENL+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20333GENL+T is usually 5 days.
3.What payment methods are accepted for MAX20333GENL+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20333GENL+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20333GENL+T?
MAX20333GENL+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20333GENL+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 MAX20333GENL+T?
For technical support, including MAX20333GENL+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20333GENL+T requirements.
6.How does Aetrix verify that MAX20333GENL+T is sourced from the original manufacturer or authorized distributors?
All MAX20333GENL+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 MAX20333GENL+T meets industry standards.
7.What is the process for return or replacement of MAX20333GENL+T?
All MAX20333GENL+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20333GENL+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 MAX20333GENL+T part is unused and in its original packaging.
Return procedure for MAX20333GENL+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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