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Analog Devices Inc./Maxim Integrated MAX4836EUT25C
- Part No.:
- MAX4836EUT25C
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX4836EUT25C.pdf
- Description:
- 500MA, LDO LINEAR REGULATOR WITH
- Quantity:
- Payment:
- Shipping:
Inventory:1,685
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Product details
Overview
MAX4836EUT25C from Maxim Integrated is a 500mA, 2.5V fixed-output LDO 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 consumes only 90µA quiescent current. It is used in USB port power management where precise current limiting and fault flagging are required.
For engineers reviewing the MAX4836EUT25C datasheet, MAX4836EUT25C pinout, MAX4836EUT25C application, or MAX4836EUT25C equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts with documented functional differences, and supply-ready availability details - all specific to the MAX4836EUT25C variant.
Technical Context
The MAX4836EUT25C implements a BiCMOS-based LDO architecture with an internal P-channel pass transistor, precision bandgap reference (1.23V), and error amplifier. Its FLAG function asserts low after sustained overload exceeding 540–660mA for >5ms (blanking time), latching off the output until IN or SHDN is cycled.
It integrates reverse-current protection (IN current <2µA when VOUT ≥ VIN), thermal shutdown at +165°C with 15°C hysteresis, and programmable soft-start via external capacitor on SS pin (1ms minimum internal ramp). Shutdown reduces quiescent current to 0.1µA while discharging OUT through internal circuitry only in MAX4837 variants - not applicable here.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% over –40°C to +85°C - ensures stable core logic supply for 2.5V I/O domains without external feedback. |
| Max Load Current | 500mA guaranteed - supports high-current peripherals like SDIO cards or USB transceivers without derating. |
| Dropout Voltage | 330mV at 500mA - enables operation with VIN as low as 2.83V, critical for battery-powered systems near end-of-discharge. |
| Quiescent Current | 90µA typical at full load - minimizes standby power loss in always-on USB host ports. |
| Current Limit | 540–660mA threshold - provides robust short-circuit protection while allowing brief inrush peaks during hot-plug events. |
| FLAG Blanking Time | 5–17ms - prevents false triggering during startup or transient overloads, ensuring reliable fault detection only under sustained faults. |
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-ion (2.7–4.2V), 3.3V rails, and 5V USB sources. |
Pinout & Package
MAX4836EUT25C is housed in a 6-pin SOT23-6 package (JEDEC MO-178AA) with exposed pad internally connected to GND. The package measures 2.9mm × 2.8mm × 1.3mm and supports reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power Input | Bypassed with 0.1µF ceramic capacitor; must be ≥2.5V to maintain regulation and ≤6V absolute max. |
| 2 GND | Ground Reference | Primary return path for load, control, and bias currents; connects to EP (exposed pad) internally. |
| 3 SHDN | Active-Low Enable | Pulled high to IN for normal operation; driven low to reduce IQ to 0.1µA and disable output. |
| 4 FLAG | Open-Drain Fault Flag | Asserts low when load current exceeds limit for >blanking time; requires external pull-up to logic supply. |
| 5 SS | Soft-Start Control | Connects to GND via capacitor (e.g., 0.01µF = 10ms ramp); floating = 1ms default rise time. |
| 6 OUT | Regulated Output | Delivers 2.5V to load; bypassed with ≥3.3µF ceramic cap (ESR <0.2Ω) for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Accurate current-limiting switch | Guaranteed 540–660mA limit with ±5% tolerance - eliminates need for external current-sense resistors in USB port protection. |
| FLAG with blanking time | 5–17ms programmable immunity window - prevents nuisance tripping during capacitive load charging or hot-insertion. |
| Ultra-low quiescent current | 90µA at full load - extends battery life in portable USB hosts without sacrificing protection capability. |
| Reverse-current protection | <2µA reverse leakage when VOUT ≥ VIN - prevents backfeeding into shared input rails in multi-rail systems. |
| Thermal shutdown with hysteresis | +165°C trip / +150°C recovery - enables safe operation under continuous overload without latch-up or damage. |
Applications
| USB Port Power Management | SDIO Card Slot Protection |
|---|---|
|
Use Scenario: Providing regulated 2.5V power to USB 2.0 downstream ports with overcurrent detection and auto-shutdown. IC Role / Device Role / Timing Role: LDO regulator + current-limiting switch + fault flag generator - replaces discrete MOSFET + sense resistor + comparator solution. Use Value: Enables compliance with USB specification current limits (500mA) while reducing BOM count by 4 components and PCB area by >30%. |
Use Scenario: Supplying clean 2.5V to SDIO memory cards in handheld devices with hot-plug robustness. IC Role / Device Role / Timing Role: Fixed-output LDO with programmable soft-start and overload latching - manages inrush and prevents system reset during card insertion. Use Value: Eliminates voltage droop and false resets during SDIO card hot-plug, verified across –40°C to +85°C operating range. |
| Notebook System I/O Rail | Cell Phone Baseband Core Supply |
|
Use Scenario: Delivering 2.5V to notebook chipset I/O interfaces requiring tight voltage tolerance and fast transient response. IC Role / Device Role / Timing Role: Low-noise (70µVRMS), high-PSRR LDO with 330mV dropout - maintains regulation during CPU burst loads. Use Value: Achieves <±2% output accuracy under 100µA–500mA dynamic load, enabling reliable signal integrity on high-speed I/O buses. |
Use Scenario: Powering baseband processor I/O banks in dual-mode (GSM/UMTS) cell phones with battery voltage sag compensation. IC Role / Device Role / Timing Role: Wide-input (2.5–5.5V), low-IQ LDO - sustains 2.5V output down to 2.83V input during RF transmit peaks. Use Value: Reduces average system power consumption by 12% vs. legacy 150µA-Q LDOs in 24-hour usage profile testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-fault-flag applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4836ETT25C | Same electrical specs but in 3mm × 3mm TDFN-6 package with exposed thermal pad - 2.6× lower junction-to-board thermal resistance. | Better suited for thermally constrained layouts (e.g., ultra-thin notebooks) where SOT23 self-heating exceeds 45°C/W. | Select MAX4836ETT25C when board space allows TDFN and thermal performance >70°C/W is required. |
| MAX4834EUT25C | 250mA version, same pinout and FLAG functionality, but lower current limit (270–330mA) and higher dropout (450mV at 250mA). | Targeted at lower-power SDIO or UART peripherals where 500mA headroom is unnecessary. | Choose MAX4834EUT25C to reduce cost and footprint when load current never exceeds 200mA. |
Compared with MAX4836EUT25C, MAX4836ETT25C offers superior thermal performance in compact designs, while MAX4834EUT25C trades current capacity for cost and size reduction - both retain identical FLAG behavior, soft-start control, and 2.5V output accuracy.
Availability
MAX4836EUT25C is available at Aetrix Electronics and suitable for USB port power management, SDIO card slot protection, notebook system I/O rail regulation, and cell phone baseband core supply requiring stable component supply across industrial temperature ranges.
Supply support for MAX4836EUT25C 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX4836 family was designed specifically for space-constrained, battery-powered systems requiring integrated current limiting and fault signaling - targeting USB, SDIO, and portable computing power rails.
FAQ
What is the output voltage tolerance of the MAX4836EUT25C over temperature?
The MAX4836EUT25C guarantees ±2% output voltage accuracy across the full –40°C to +85°C operating temperature range at load currents from 1mA to 500mA. This is measured against the nominal 2.5V output and includes line, load, and temperature effects - critical for powering 2.5V logic interfaces without margin violation.
Does the MAX4836EUT25C provide reverse-current protection?
Yes, the MAX4836EUT25C includes integrated reverse-current protection. When VOUT ≥ VIN, the internal pass transistor turns off and limits reverse current at IN to less than 2µA - preventing backfeeding into shared input supplies, a key requirement in multi-rail portable systems.
How does the FLAG output behave during an overload condition?
When load current exceeds the 540–660mA limit for longer than the blanking time (5–17ms), the MAX4836EUT25C asserts its open-drain FLAG low and latches the pass transistor off. Recovery requires cycling SHDN or IN - a deliberate safety feature to prevent automatic restart into persistent fault conditions.
What is the minimum recommended output capacitor for stable operation of the MAX4836EUT25C?
The MAX4836EUT25C requires a minimum 3.3µF ceramic output capacitor with ESR <0.2Ω for stable operation across –40°C to +85°C and up to 500mA load. X7R dielectric is recommended for minimal capacitance shift over temperature - smaller values risk oscillation under heavy transient loads.
Can the MAX4836EUT25C be used with input voltages below 2.5V?
No - the MAX4836EUT25C has a specified input voltage range of 2.5V to 5.5V. Operation below 2.5V violates the absolute minimum rating and causes undervoltage lockout (UVLO) activation at ~2.125V (typical), disabling regulation. For sub-2.5V inputs, consider the MAX4832/MAX4833 family.
MAX4836EUT25C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX4836EUT25C FAQ
1.How can I place an order for MAX4836EUT25C through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4836EUT25C 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 MAX4836EUT25C reliable?
The price and inventory of MAX4836EUT25C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4836EUT25C is usually 5 days.
3.What payment methods are accepted for MAX4836EUT25C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4836EUT25C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4836EUT25C?
MAX4836EUT25C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4836EUT25C 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 MAX4836EUT25C?
For technical support, including MAX4836EUT25C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4836EUT25C requirements.
6.How does Aetrix verify that MAX4836EUT25C is sourced from the original manufacturer or authorized distributors?
All MAX4836EUT25C 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 MAX4836EUT25C meets industry standards.
7.What is the process for return or replacement of MAX4836EUT25C?
All MAX4836EUT25C units undergo pre-shipment inspection (PSI). If there is an issue with MAX4836EUT25C, 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 MAX4836EUT25C part is unused and in its original packaging.
Return procedure for MAX4836EUT25C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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