My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX20333FENL+T
- Part No.:
- MAX20333FENL+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Current Regulation/Management
- Package:
- 15-XFBGA, WLBGA
- Datasheet:
-
MAX20333FENL+T.pdf
- Description:
- CLS WITH LOW POWER MODE
- Quantity:
- Payment:
- Shipping:
Inventory:1,471
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX20333FENL+T from Maxim Integrated is a programmable current-limit switch with latchoff behavior, 23mΩ typical on-resistance, +3.5V to +22V input range, and integrated low-power mode (LPM). It operates in normal, high-current, and low-power modes, and delivers precise overcurrent protection for USB port and battery disconnect applications.
For engineers reviewing the MAX20333FENL+T datasheet, MAX20333FENL+T pinout, MAX20333FENL+T application, or MAX20333FENL+T equivalent, this device supports programmable current limit (0.2A–4.75A), current monitoring via SETI, thermal shutdown, and fault flag assertion - all in a 15-bump WLP (2.1mm × 1.52mm) package rated for –40°C to +85°C.
Technical Context
The MAX20333FENL+T implements a precision current-sense FET switch with three operational modes: normal mode (NM), high-current mode (HCM), and low-power mode (LPM). Its latchoff behavior-triggered after blanking time expiration-ensures persistent fault isolation until enable cycling or supply reset.
It features an internal current mirror (CIRATIO = 1333 A/A in NM) enabling accurate current monitoring at SETI, programmable blanking time via PBT (with 5µA sourced current), and voltage-based flag assertion thresholds (VFA = 425mV typ, VSD_THR = 165mV typ in LPM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +3.5V to +22V - supports wide industrial and automotive power rails without external regulation. |
| On-Resistance (NM/HCM) | 23mΩ (typ) - minimizes conduction loss and self-heating at up to 4.75A continuous load. |
| Programmable Current Limit | 0.2A to 4.75A - set by external RSETI (e.g., 421Ω → 4.75A); enables single-BOM flexibility across load profiles. |
| Current-Limit Behavior | Latchoff - disables output permanently on sustained overcurrent; requires EN/EN toggle or VIN cycle to recover. |
| Quiescent Current (NM) | 0.9mA (typ) - ensures minimal standby power draw in always-on systems. |
| Low-Power Mode Quiescent Current | 13µA (typ) - reduces system sleep-state power by >98% vs. normal mode. |
| Thermal Shutdown Threshold | +150°C (typ) - protects silicon integrity during short-circuit or overload conditions. |
Pinout & Package
MAX20333FENL+T uses a 15-bump Wafer-Level Package (WLP), 2.1mm × 1.52mm, with 0.4mm bump pitch and RoHS-compliant finish (N151A2+1 outline).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power Input | Main supply input; bypassed with ≥1µF ceramic capacitor near device to suppress transient voltage drop. |
| OUT | Switch Output | Load-side terminal; connects to protected downstream circuitry; requires local 1µF ceramic decoupling. |
| EN | Active-High Enable | Enables switch in normal/high-current modes when high; forces shutdown when low. |
| PG | Power-Good Input | Configures operating mode: high = NM/LPM, low = HCM/SHDN per truth table; no internal clamp. |
| FLAG | Open-Drain Fault Flag | Asserts low on overcurrent (after blanking), thermal shutdown, or SETI-to-GND fault; requires external pullup. |
| PBT | Programmable Blanking Time | Sources 5µA; CPBT sets tBLANK = (CPBT × 1.5)/5µA + 300µS - enables adjustable fault response timing. |
| SETI | Current Limit Adjust & Monitor | Voltage proportional to IOUT (IOUT = VSETI × 1333/RSETI); resistor to GND programs ILIM. |
| GND | Ground Reference | Common return path for IN, OUT, SETI, PBT, FLAG, EN, and PG; must be low-impedance. |
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 sleep power (LPM). |
| Latchoff Fault Response | Prevents repeated fault cycling in safety-critical systems; eliminates need for external latching logic or microcontroller intervention. |
| Integrated Current Monitoring | SETI provides real-time analog current readout (±5% accuracy) without external sense resistor or amplifier. |
| Programmable Blanking Time (PBT) | Capacitor-tuned blanking (350µs to 500ms) avoids nuisance tripping during inrush or transient overloads. |
| Thermal Shutdown with Hysteresis | Shuts down at +150°C and re-enables only after cooling to +135°C - prevents thermal oscillation under marginal heatsinking. |
Applications
| USB Port Protection Switch | Battery Disconnect Switch |
|---|---|
Use Scenario: Protects host USB ports from short-circuited peripherals or faulty cables during hot-plug events. IC Role / Device Role / Timing Role: Acts as a smart eFuse that limits peak current to 1.5A–3A while asserting FLAG for system-level fault logging. Use Value: Prevents bus voltage collapse and host controller damage; eliminates need for manual fuse replacement. |
Use Scenario: Isolates lithium-ion battery packs from system loads during deep discharge, overtemperature, or firmware-initiated safe shutdown. IC Role / Device Role / Timing Role: Functions as a controlled, latchable disconnect switch with <100µs fault reaction and thermal margin. Use Value: Extends battery life and enhances functional safety compliance (e.g., UL 2367 recognized for MAX20333FENL+T). |
| Industrial Power Supply Sequencing | Automotive Body Control Module (BCM) |
Use Scenario: Enables controlled power-up of downstream DC/DC converters and sensors in multi-rail industrial controllers. IC Role / Device Role / Timing Role: Provides sequenced, current-limited enablement with PG input coordination and fault-flag feedback to MCU. Use Value: Eliminates inrush-induced brownouts and allows deterministic power-up timing across complex subsystems. |
Use Scenario: Safeguards 12V accessory circuits (e.g., door locks, lighting) against wiring faults or ESD-induced shorts in vehicle cabins. IC Role / Device Role / Timing Role: Serves as a robust, temperature-hardened load switch with latchoff behavior for fail-safe operation. Use Value: Meets automotive ambient requirements (–40°C to +85°C), supports ISO 7637-2 pulse immunity via low RON. |
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 | Continuous current-limit behavior instead of latchoff; same package, voltage range, and RON. | Suitable where sustained overload must be tolerated (e.g., motor stall detection) rather than isolated. | Select MAX20333DENL+T if system requires uninterrupted current limiting without latching; otherwise MAX20333FENL+T is preferred for fault containment. |
| MAX20333HENL+T | Autoretry behavior (tRETRY = 30 × tBLANK) instead of latchoff; identical pinout and electrical specs. | Used in applications needing automatic recovery after transient faults (e.g., USB hot-plug with intermittent shorts). | Choose MAX20333HENL+T only when autoretry is explicitly required; MAX20333FENL+T offers stronger fault isolation for safety-critical use. |
Compared with MAX20333DENL+T and MAX20333HENL+T, the MAX20333FENL+T provides definitive fault containment via latchoff - eliminating risk of repeated stress on downstream components during persistent overloads, making it optimal for battery protection and USB port hardening.
Availability
MAX20333FENL+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 guaranteed RoHS-compliant sourcing.
Supply support for MAX20333FENL+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, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The MAX20333 family was developed specifically for programmable, high-reliability current-limit switching in space-constrained, thermally demanding environments - emphasizing latchoff safety, low-quiescent power, and accurate current monitoring.
FAQ
What current-limit behavior does MAX20333FENL+T implement?
MAX20333FENL+T implements latchoff behavior: when overcurrent persists beyond the blanking time (tBLANK), the switch turns off and remains off until EN is toggled or VIN is cycled. This differs from autoretry or continuous modes and is confirmed in the Ordering Information table and Functional Truth Table for MAX20333FENL+T.
How is the current limit programmed on MAX20333FENL+T?
The current limit on MAX20333FENL+T is set by connecting a resistor (RSETI) between SETI and GND. For example, 421Ω yields 4.75A in normal mode. The relationship is ILIM = 1.5V / (RSETI × 1333), and RSETI must exceed 350Ω to avoid forced disable.
Does MAX20333FENL+T support low-power mode (LPM)?
Yes, MAX20333FENL+T supports low-power mode (LPM), reducing quiescent current to 13µA (typ). In LPM, on-resistance rises to 420mΩ (typ), thermal protection is disabled, and the switch opens if (VIN – VOUT) exceeds 165mV (VSD_THR).
What package type and dimensions does MAX20333FENL+T use?
MAX20333FENL+T uses a 15-bump Wafer-Level Package (WLP) with 2.1mm × 1.52mm footprint and 0.4mm bump pitch (package code N151A2+1). This ultra-compact package enables high-density PCB layouts in portable and automotive applications.
Is MAX20333FENL+T UL 2367 recognized?
Yes, MAX20333FENL+T is UL 2367 recognized (File No. E211395), confirming its suitability for end-equipment requiring certified overcurrent protection - specifically noted for MAX20333/A/F/G variants in the Benefits and Features section.
MAX20333FENL+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)
MAX20333FENL+T FAQ
1.How can I place an order for MAX20333FENL+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX20333FENL+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 MAX20333FENL+T reliable?
The price and inventory of MAX20333FENL+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX20333FENL+T is usually 5 days.
3.What payment methods are accepted for MAX20333FENL+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX20333FENL+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX20333FENL+T?
MAX20333FENL+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX20333FENL+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 MAX20333FENL+T?
For technical support, including MAX20333FENL+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX20333FENL+T requirements.
6.How does Aetrix verify that MAX20333FENL+T is sourced from the original manufacturer or authorized distributors?
All MAX20333FENL+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 MAX20333FENL+T meets industry standards.
7.What is the process for return or replacement of MAX20333FENL+T?
All MAX20333FENL+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX20333FENL+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 MAX20333FENL+T part is unused and in its original packaging.
Return procedure for MAX20333FENL+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX20333FENL+T Tags
.jpg)
-
PSSI2021SAY,115
Nexperia USA Inc.
-
BCR401RE6327HTSA1
Infineon Technologies
-
INA199B2DCKR
Texas Instruments
-
INA199A1DCKR
Texas Instruments
-
INA199B1DCKR
Texas Instruments
-
NSI45015WT1G
onsemi
-
NSI45020T1G
onsemi
-
NSI45030AT1G
onsemi
-
NSI45025AT1G
onsemi
-
NSI45020AT1G
onsemi
-
NSI50010YT1G
onsemi
-
LM334Z/NOPB
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…
