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Analog Devices Inc./Maxim Integrated MAX4836ETT25C
- Part No.:
- MAX4836ETT25C
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX4836ETT25C.pdf
- Description:
- IC REG LINEAR 500MA
- Quantity:
- Payment:
- Shipping:
Inventory:868
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Product details
Overview
The MAX4836ETT25C from Maxim Integrated is a 2.5V, 500mA 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, features 90µA quiescent current, reverse-current protection, and thermal shutdown, and is used in USB port power management and SDIO interface regulation.
For engineers reviewing the MAX4836ETT25C datasheet, MAX4836ETT25C pinout, MAX4836ETT25C application, or MAX4836ETT25C equivalent, this page delivers verified technical context, package-specific pin functions, real-world use cases, and validated alternative parts for portable power-rail design and fault-aware LDO selection.
Technical Context
The MAX4836ETT25C implements a BiCMOS-based LDO architecture with an internal P-channel pass transistor, fixed 2.5V output, and programmable soft-start via external capacitor on the SS pin. Its FLAG output asserts low after sustained overcurrent exceeding 540–660mA for >5ms (blanking time), latching off the pass element until IN or SHDN is cycled.
It integrates reverse-current protection that limits IN leakage to ≤2µA when VOUT ≥ VIN, plus thermal shutdown at +165°C with 15°C hysteresis. The device guarantees ±2% output voltage accuracy across –40°C to +85°C and maintains stability with a 3.3µF ceramic output capacitor (ESR < 0.2Ω).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% over –40°C to +85°C - ensures stable core logic or I/O rail without external feedback. |
| Max Load Current | 500mA guaranteed - supports high-current peripherals like USB transceivers or SD card controllers. |
| Dropout Voltage | 330mV at 500mA - enables operation with only 2.83V input for 2.5V output, critical in battery-powered systems. |
| Quiescent Current | 90µA at full load - minimizes standby power loss in always-on subsystems such as GPS receivers. |
| Shutdown Current | 0.1µA - allows deep-sleep modes in portable devices without compromising system-level power budget. |
| Current Limit Threshold | 540–660mA - provides precise short-circuit protection while avoiding nuisance tripping during inrush. |
| Soft-Start Time | Programmable (1ms min to 150ms max) via CSS capacitor - eliminates false FLAG assertion during startup. |
Pinout & Package
MAX4836ETT25C uses a 6-pin TDFN package (3mm × 3mm, 0.8mm height) with exposed paddle internally connected to GND. Thermal performance is optimized by externally connecting the paddle to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power input | Bypassed with 0.1µF ceramic capacitor; accepts 2.5V–5.5V supply; reverse-current protected. |
| 2 GND | Ground reference | Common return for all internal circuits; connects to exposed paddle for thermal conduction. |
| 3 SHDN | Active-low enable | Pull low to enter 0.1µA shutdown; pull high or tie to IN for normal operation; includes 30mV hysteresis. |
| 4 FLAG | Open-drain fault indicator | Asserts low when load current exceeds limit for >5–17ms; requires external pull-up for logic-level signaling. |
| 5 SS | Soft-start timing control | Capacitor-to-GND sets output ramp time (tSS ≈ CSS in nF); floating = 1ms default; prevents false FLAG at power-up. |
| 6 OUT | Regulated output | Delivers 2.5V @ up to 500mA; bypassed with ≥3.3µF ceramic cap (ESR < 0.2Ω) for stability and noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Accurate current limiting | Guaranteed 540–660mA threshold with latch-off behavior - enables robust short-circuit protection without external sensing. |
| FLAG with blanking time | 5–17ms programmable immunity window - prevents false fault reporting during transient overload or startup inrush. |
| Reverse-current protection | IN leakage ≤2µA when VOUT ≥ VIN - eliminates backfeed into source in multi-rail or hot-swap systems. |
| Ultra-low shutdown current | 0.1µA - meets stringent energy budgets for battery-backed real-time clocks or sensor wake-up circuits. |
| Thermal shutdown with hysteresis | +165°C trip / +150°C recovery - sustains pulsed operation under continuous overload without permanent latch-up. |
Applications
| USB Host Port Power Management | SDIO Interface Regulation |
|---|---|
Use Scenario: Regulating 2.5V supply for USB 2.0 transceivers and hub controllers in notebook computers. IC Role / Device Role / Timing Role: Primary LDO with current-limiting switch and FLAG fault signaling for overcurrent event detection. Use Value: Prevents bus faults from disabling entire USB subsystem; 500mA rating supports simultaneous enumeration of multiple devices. |
Use Scenario: Providing stable 2.5V rail to SDIO host controllers and memory cards in PDAs and GPS modules. IC Role / Device Role / Timing Role: Fixed-output LDO with reverse-current protection and soft-start to avoid SD card initialization failures. Use Value: Eliminates backfeed from SD card into host during card insertion/removal; soft-start prevents false FLAG during card hot-plug. |
| Notebook System I/O Rail | Cell Phone Baseband Core Supply |
Use Scenario: Delivering 2.5V to touch controller, audio codec, or camera interface in space-constrained notebooks. IC Role / Device Role / Timing Role: Compact TDFN LDO with thermal shutdown and low IQ for always-on peripheral rails. Use Value: 3mm × 3mm footprint saves board area; 90µA quiescent current extends battery life during display-off states. |
Use Scenario: Powering baseband processor I/O banks requiring tight 2.5V regulation and fast fault response. IC Role / Device Role / Timing Role: Fault-aware LDO with FLAG-driven interrupt to baseband MCU for immediate overcurrent handling. Use Value: Enables firmware-level current monitoring and graceful shutdown before thermal damage occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-fault-detection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4836EUT25C | SOT23-6 package (same electrical specs); 2.9mm × 1.6mm footprint vs. TDFN's 3mm × 3mm; higher thermal resistance (727mW vs. 1951mW) | Better suited for prototyping or low-volume designs where manual soldering or legacy footprints are required | Select when board space permits larger package or thermal load is below 400mW |
| MAX4834ETT25C | 250mA rated output (vs. 500mA); identical FLAG function, soft-start, and 2.5V output; same TDFN-6 package | Targeted at lower-power peripherals like Bluetooth modules or sensors where 500mA headroom is unnecessary | Choose when load current stays ≤250mA and cost reduction is prioritized over margin |
Compared with MAX4836ETT25C, MAX4836EUT25C trades thermal performance for easier assembly, while MAX4834ETT25C reduces current capability by 50% to lower cost-both retain identical FLAG behavior and 2.5V regulation but require revalidation of thermal and load margins.
Availability
MAX4836ETT25C 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 RoHS-compliant sourcing.
Supply support for MAX4836ETT25C 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, data conversion, and interface applications.
The MAX4836/MAX4837 product line targets portable and battery-powered systems needing fault-aware, low-quiescent-current LDOs with integrated current limiting and status signaling.
FAQ
What output voltage does the MAX4836ETT25C provide?
The MAX4836ETT25C provides a fixed 2.5V output voltage with ±2% accuracy across –40°C to +85°C. This value is factory-programmed and non-adjustable; the "25" in the part number explicitly denotes the 2.5V option per Maxim's suffix guide. No external resistors or configuration pins are required to set or verify the output level.
Does the MAX4836ETT25C include reverse-current protection?
Yes, the MAX4836ETT25C includes integrated reverse-current protection that limits current flow from OUT to IN to ≤2µA when VOUT ≥ VIN. This feature prevents backfeeding into the input source during hot-swap events or when multiple regulators share a common input rail, ensuring system-level reliability without external diodes.
How does the FLAG output of the MAX4836ETT25C behave during overcurrent?
The FLAG output of the MAX4836ETT25C is an open-drain signal that asserts low when load current exceeds 540–660mA for longer than the blanking time (5–17ms). Once asserted, the internal pass transistor latches off until IN or SHDN is cycled high-low-high. FLAG remains low during thermal shutdown or shutdown mode.
What is the minimum input voltage required for the MAX4836ETT25C to regulate 2.5V?
The MAX4836ETT25C requires a minimum input voltage of 2.83V to maintain regulation at 2.5V output under full 500mA load, based on its 330mV dropout voltage specification. Input undervoltage lockout activates below 2.00–2.25V, preventing unstable operation during brownout conditions.
Can the soft-start time of the MAX4836ETT25C be adjusted, and how?
Yes, the soft-start time of the MAX4836ETT25C is adjustable via an external capacitor (CSS) connected between the SS pin and GND. The soft-start time tSS ≈ CSS (in nF) yields values from 1ms (no capacitor) to 150ms (0.1µF). This programmability prevents false FLAG assertion during power-up and controls inrush current into downstream capacitance.
MAX4836ETT25C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.33V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Current Limit, Enable, Soft Start
- Protection Features:
- Over Current, Over Temperature, Reverse Current, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN-EP (3x3)
MAX4836ETT25C FAQ
1.How can I place an order for MAX4836ETT25C through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4836ETT25C 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 MAX4836ETT25C reliable?
The price and inventory of MAX4836ETT25C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4836ETT25C is usually 5 days.
3.What payment methods are accepted for MAX4836ETT25C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4836ETT25C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4836ETT25C?
MAX4836ETT25C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4836ETT25C 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 MAX4836ETT25C?
For technical support, including MAX4836ETT25C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4836ETT25C requirements.
6.How does Aetrix verify that MAX4836ETT25C is sourced from the original manufacturer or authorized distributors?
All MAX4836ETT25C 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 MAX4836ETT25C meets industry standards.
7.What is the process for return or replacement of MAX4836ETT25C?
All MAX4836ETT25C units undergo pre-shipment inspection (PSI). If there is an issue with MAX4836ETT25C, 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 MAX4836ETT25C part is unused and in its original packaging.
Return procedure for MAX4836ETT25C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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