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Analog Devices Inc./Maxim Integrated MAX4836ETT33C+
- Part No.:
- MAX4836ETT33C+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX4836ETT33C+.pdf
- Description:
- IC REG LINEAR 3.3V 500MA 6TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,545
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Product details
Overview
MAX4836ETT33C+ from Maxim Integrated is a 500mA, 3.3V fixed-output low-dropout linear regulator with integrated current-limiting switch and open-drain FLAG output for overcurrent detection. It operates from 2.5V to 5.5V input, delivers ±2% output voltage accuracy over –40°C to +85°C, features 330mV dropout at full load, and supports reverse-current protection - used in USB port power management and SDIO interface supply rails.
For engineers reviewing the MAX4836ETT33C+ datasheet, MAX4836ETT33C+ pinout, MAX4836ETT33C+ application, or MAX4836ETT33C+ equivalent, key selection criteria include guaranteed 500mA current limit, 90µA quiescent current, programmable soft-start via external capacitor, FLAG latch-off behavior under sustained overload, and TDFN-6 package thermal performance for space-constrained portable designs.
Technical Context
The MAX4836ETT33C+ implements a BiCMOS-based LDO architecture with an internal PMOS pass transistor, precision bandgap reference (1.23V), and error amplifier. Its FLAG function asserts low only after sustained overcurrent exceeds the blanking time (5–17ms), preventing false triggering during transient loads or startup.
Reverse-current protection actively disables the pass device when VOUT ≥ VIN, limiting reverse leakage to ≤2µA. Thermal shutdown engages at +165°C with 15°C hysteresis, enabling pulsed operation under continuous overload without damage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% over –40°C to +85°C - ensures stable logic-level supply for 3.3V I/O domains. |
| Load Current | Guaranteed 500mA - supports high-current peripherals like USB transceivers and SD card controllers. |
| Dropout Voltage | 330mV at 500mA - enables regulation from 3.63V input, critical for battery-powered systems near end-of-discharge. |
| Quiescent Current | 90µA typical at full load - minimizes standby power loss in always-on subsystems. |
| Shutdown Current | 0.1µA - reduces system-level leakage during deep sleep modes. |
| Current Limit | 540–660mA - provides robust short-circuit protection while allowing margin above nominal 500mA rating. |
| Soft-Start Time | Programmable from 1ms (no capacitor) to 150ms (0.1µF) - eliminates inrush current and prevents false FLAG assertion during power-up. |
Pinout & Package
MAX4836ETT33C+ uses a 6-pin TDFN package (3mm × 3mm × 0.8mm) with exposed paddle thermally and electrically connected to GND. The package supports high-power dissipation (1951.2mW at +70°C) and requires PCB thermal pad connection for reliable operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power Input | Bypassed with 0.1µF ceramic capacitor; accepts 2.5V–5.5V input; reverse-current protection activates if VOUT ≥ VIN. |
| 2 GND | Ground Reference | Primary return path; exposed paddle must be soldered to PCB ground plane for thermal and electrical integrity. |
| 3 SHDN | Active-Low Enable | Pull low to enter 0.1µA shutdown; connect to IN or >1.4V to enable; includes 30mV hysteresis. |
| 4 FLAG | Open-Drain Overcurrent Flag | Asserts low after sustained overload (>blanking time); latches off until IN or SHDN toggled; max sink 3.2mA at 0.4V. |
| 5 SS | Soft-Start Control | Connect external capacitor (0–0.1µF) to GND to set rise time; 1ms minimum internal soft-start ensures safe startup even unconnected. |
| 6 OUT | Regulated Output | Delivers 3.3V ±2%; requires ≥3.3µF ceramic capacitor with ESR <0.2Ω for stability; discharges only externally (no internal discharge). |
Key Features
| Feature | Design Value |
|---|---|
| Accurate current-limiting switch | 540–660mA threshold with ±2% tolerance - enables precise fault current capping without external sensing. |
| FLAG with blanking time | 5–17ms programmable immunity window - prevents false flagging during inrush or brief overload events. |
| Reverse-current protection | ≤2µA reverse leakage at VOUT = 5.5V, VIN = 0V - eliminates backfeed into input sources during hot-swap or battery switchover. |
| Ultra-low quiescent current | 90µA at full load - maintains efficiency in always-on applications such as real-time clock or sensor bias supplies. |
| TDFN thermal performance | 24.4mW/°C derating above +70°C - supports 500mA operation in compact layouts with minimal heatsinking. |
Applications
| USB Host Port Power Management | SDIO Interface Supply Regulation |
|---|---|
|
Use Scenario: Powers USB 2.0 downstream ports in notebooks and docking stations, handling hot-plug events and cable capacitance charging. IC Role / Device Role / Timing Role: LDO regulator with current-limiting switch and FLAG output - monitors load current and signals host controller upon sustained overcurrent. Use Value: Prevents bus-wide reset by isolating faulty peripherals; 330mV dropout allows operation from single-cell Li-ion (3.6V min) throughout discharge cycle. |
Use Scenario: Supplies regulated 3.3V to SDIO cards and controllers in smartphones and GPS modules. IC Role / Device Role / Timing Role: Fixed-output LDO with reverse-current protection - blocks backfeed from SD card to host during card removal or power sequencing faults. Use Value: Eliminates need for external blocking diode; 0.1µA shutdown current extends battery life in standby mode. |
| Notebook System I/O Rail | Cell Phone Baseband Core Supply |
|
Use Scenario: Provides clean 3.3V supply to embedded controllers, touch controllers, and audio codecs in ultrabooks. IC Role / Device Role / Timing Role: Low-noise (70µVRMS), high-PSRR LDO - rejects switching noise from DC-DC converters feeding main CPU rails. Use Value: Maintains signal integrity for analog interfaces; soft-start prevents brownout on shared input rails during simultaneous power-up. |
Use Scenario: Delivers stable 3.3V to baseband processors and RF front-end ICs during burst transmission. IC Role / Device Role / Timing Role: High-current (500mA), thermally robust LDO - sustains peak loads without thermal shutdown in sealed handset enclosures. Use Value: Exposed paddle and TDFN package reduce junction-to-PCB thermal resistance to <30°C/W - avoids throttling during extended data sessions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4836EUT33C+ | SOT23-6 package; higher thermal resistance (9.1mW/°C vs. 24.4mW/°C); same electrical specs and FLAG functionality. | Preferred where board area is less constrained than thermal budget; lower cost for low-volume prototyping. | Select MAX4836EUT33C+ when thermal headroom exceeds 40°C and PCB real estate permits larger footprint. |
| MAX4834ETT33C+ | 250mA rated output; identical pinout, FLAG function, and TDFN-6 package; lower current limit and reduced thermal capability. | Suitable for lower-power SDIO or GPIO rails where 500mA margin is unnecessary. | Choose MAX4834ETT33C+ only when load current remains ≤250mA; not a drop-in replacement for 500mA designs. |
Compared with MAX4836ETT33C+, the SOT23 variant trades thermal performance for ease of assembly, while the MAX4834ETT33C+ reduces current capability without altering footprint - both require explicit validation of thermal margins and load profile before substitution.
Availability
MAX4836ETT33C+ is available at Aetrix Electronics and suitable for USB port power management, SDIO interface regulation, and notebook I/O rail applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4836ETT33C+ 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, automotive, and communications applications.
The MAX4836/MAX4837 family targets portable and battery-powered systems needing accurate current-limited LDOs with fault signaling - optimized for USB, SDIO, and mobile peripheral power rails.
FAQ
What is the maximum input voltage for MAX4836ETT33C+?
The MAX4836ETT33C+ supports an absolute maximum input voltage of +6V referenced to GND, but its operational range is specified from 2.5V to 5.5V. Operation above 5.5V risks permanent damage, and input undervoltage lockout activates below 2.00V (typical), ensuring reliable startup only within the validated supply window.
Does MAX4836ETT33C+ provide output discharge during shutdown?
No, MAX4836ETT33C+ does not include internal output discharge. Unlike the MAX4837 variant, the MAX4836ETT33C+ FLAG version leaves the OUT pin floating in shutdown mode. External discharge circuitry (e.g., MOSFET or resistor network) must be added if rapid output decay is required after shutdown.
How is the blanking time configured on MAX4836ETT33C+?
The blanking time (tBLANK) of MAX4836ETT33C+ is internally fixed between 5ms and 17ms across temperature and is not user-adjustable. It is designed to ignore transient overloads during startup or load switching, ensuring FLAG asserts only after sustained current limit violation - no external components or configuration pins affect this timing.
Can MAX4836ETT33C+ be used with ceramic output capacitors smaller than 3.3µF?
No - MAX4836ETT33C+ requires a minimum 3.3µF ceramic output capacitor with ESR <0.2Ω for guaranteed stability across –40°C to +85°C and 0–500mA load range. Using smaller values risks oscillation or poor transient response, as confirmed in the stability region plot (toc06) and Applications Information section.
What is the thermal shutdown behavior of MAX4836ETT33C+?
MAX4836ETT33C+ enters thermal shutdown at +165°C junction temperature and remains latched off until junction cools by 15°C (to ~+150°C), then resumes regulation. Under continuous overload, this results in pulsed output - a fail-safe mechanism that prevents permanent damage while maintaining detectable fault signaling via FLAG.
MAX4836ETT33C+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.33V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable, Reset, Soft Start
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN-EP (3x3)
MAX4836ETT33C+ FAQ
1.How can I place an order for MAX4836ETT33C+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4836ETT33C+ 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 MAX4836ETT33C+ reliable?
The price and inventory of MAX4836ETT33C+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4836ETT33C+ is usually 5 days.
3.What payment methods are accepted for MAX4836ETT33C+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4836ETT33C+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4836ETT33C+?
MAX4836ETT33C+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4836ETT33C+ 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 MAX4836ETT33C+?
For technical support, including MAX4836ETT33C+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4836ETT33C+ requirements.
6.How does Aetrix verify that MAX4836ETT33C+ is sourced from the original manufacturer or authorized distributors?
All MAX4836ETT33C+ 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 MAX4836ETT33C+ meets industry standards.
7.What is the process for return or replacement of MAX4836ETT33C+?
All MAX4836ETT33C+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4836ETT33C+, 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 MAX4836ETT33C+ part is unused and in its original packaging.
Return procedure for MAX4836ETT33C+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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