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Analog Devices Inc./Maxim Integrated MAX4833ETT25BD3
- Part No.:
- MAX4833ETT25BD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX4833ETT25BD3.pdf
- Description:
- IC REG LINEAR 100MA LDO
- Quantity:
- Payment:
- Shipping:
Inventory:1,935
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Product details
Overview
MAX4833ETT25BD3 from Maxim Integrated is a 2.5V, 100mA low-dropout linear regulator with integrated RESET output, reverse-current protection, 90µA quiescent current, and programmable soft-start. It operates from 2.5V to 5.5V input and delivers stable voltage for USB port power management in portable electronics.
For engineers reviewing the MAX4833ETT25BD3 datasheet, MAX4833ETT25BD3 pinout, MAX4833ETT25BD3 application, or MAX4833ETT25BD3 equivalent, key selection criteria include its 2.5V fixed output, push-pull RESET with 225ms timeout (D3), TDFN-6 package thermal performance, and shutdown discharge capability.
Technical Context
The MAX4833ETT25BD3 integrates an accurate current-limiting switch with a push-pull RESET output that asserts low when VOUT drops below 87.5% of nominal (2.1875V), during input undervoltage lockout (<2.25V), thermal shutdown (+165°C), or SHDN assertion. Its soft-start is externally programmable via capacitor on SS pin, with tSS = CSS (nF) ms.
Reverse-current protection ensures <2µA IN leakage when VOUT ≥ VIN, and shutdown discharges OUT through an internal 900Ω resistor. The device uses BiCMOS process and features thermal hysteresis of 15°C to prevent oscillation during overload.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% over -40°C to +85°C - enables direct replacement of 2.5V logic rails without external feedback. |
| Load Current | Guaranteed 100mA - sufficient for powering SDIO peripherals, GPS baseband ICs, or USB transceivers. |
| Dropout Voltage | 130mV at 100mA - allows operation with VIN as low as 2.63V while maintaining regulation. |
| Quiescent Current | 90µA active / 0.1µA shutdown - extends battery life in always-on portable systems. |
| RESET Timeout | 225ms (D3 suffix) - prevents false resets during brief load transients while ensuring reliable system recovery. |
| Soft-Start Time | Programmable (e.g., 100ms with 0.1µF CSS) - eliminates inrush current and avoids false FLAG/RESET assertion at startup. |
| Shutdown Discharge | Internal 900Ω path from OUT to GND - ensures rapid output decay during shutdown for sequencing-critical applications. |
Pinout & Package
MAX4833ETT25BD3 is housed in a 3mm × 3mm, 0.8mm-thick TDFN-6 package with exposed paddle (EP) internally connected to GND. The EP must be externally soldered to PCB ground for optimal thermal performance (derating: 24.4mW/°C above +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Power Supply | Bypass with 0.1µF ceramic capacitor; accepts 2.5V–5.5V; UVLO triggers below 2.25V. |
| 2 (GND) | Ground Reference | Common return for all circuits; EP must be connected to this node for thermal and EMI control. |
| 3 (SHDN) | Active-Low Enable | Pull low to enter 0.1µA shutdown; VIH ≥1.4V, VIL ≤0.5V; toggling re-enables operation. |
| 4 (RESET) | Push-Pull Reset Output | Asserts low during VOUT <2.1875V, VIN <2.25V, thermal shutdown, or SHDN low; remains low for 225ms after fault clears. |
| 5 (SS) | Soft-Start Control | Connect capacitor to GND to set ramp time; floating yields ~1ms rise; 0.1µF gives ~100ms. |
| 6 (OUT) | Regulated Output | Delivers 2.5V ±2%; requires ≥3.3µF ceramic cap (ESR <0.2Ω); discharges via internal 900Ω in shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Accurate current limiting | 115–135mA limit with latch-off immunity during soft-start - protects downstream circuitry without false triggering. |
| 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 pulsed operation under sustained overload without damage. |
| 15kV HBM ESD protection at OUT | Enabled by ≥3.3µF output capacitor with ESR <0.2Ω - eliminates need for external TVS in USB/SDIO interfaces. |
| Reset transient immunity | Withstands 54µs transients 10mV below reset threshold - avoids spurious resets during switching noise or load dumps. |
Applications
| USB Port Power Management | GPS Receiver Power Sequencing |
|---|---|
Use Scenario: Powers USB transceiver and PHY in battery-powered handheld devices with strict inrush and sequencing requirements. IC Role / Device Role / Timing Role: LDO provides clean 2.5V rail; RESET monitors output stability and holds MCU in reset until voltage settles post-soft-start. Use Value: Internal 900Ω shutdown discharge ensures fast OUT decay, enabling precise power-down sequencing with host controller. | Use Scenario: Supplies 2.5V to GPS baseband IC requiring glitch-free startup and brownout detection during satellite acquisition. IC Role / Device Role / Timing Role: Regulator maintains stable VDD; RESET asserts within 35µs of VOUT drop and holds for 225ms to guarantee full GPS state machine reset. Use Value: 87.5% reset threshold (2.1875V) and 225ms timeout prevent nuisance resets during antenna signal search dips. |
| Notebook Subsystem Rail | SDIO Card Interface Regulation |
Use Scenario: Generates auxiliary 2.5V rail for embedded controller peripherals in ultraportable notebooks with thermal constraints. IC Role / Device Role / Timing Role: LDO delivers 100mA with 130mV dropout; TDFN-6 EP improves thermal resistance to sustain full load in confined chassis space. Use Value: 90µA quiescent current minimizes standby drain; reverse-current protection isolates rail during sleep-mode input disconnection. | Use Scenario: Powers SDIO WLAN/BT combo module where output must remain regulated during card insertion/removal events. IC Role / Device Role / Timing Role: Provides 2.5V with soft-start to limit inrush; RESET signals host processor if VOUT sags due to hot-plug surge or ESD event. Use Value: 15kV HBM ESD tolerance at OUT (with proper COUT) eliminates need for discrete protection, reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-RESET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4833EUT25BD3 | SOT23-6 package (vs. TDFN-6); higher thermal resistance (9.1mW/°C vs. 24.4mW/°C); same electrical specs. | Preferred for prototyping or low-volume boards where hand-soldering or test probe access is required. | Select when board space permits larger footprint and thermal design accommodates lower power dissipation. |
| MAX4836ETT25BD3 | 500mA output current (vs. 100mA); identical pinout, RESET function, and 2.5V output; higher IQ (120µA vs. 90µA). | Suitable for systems upgrading from 100mA to 500mA loads without layout change - e.g., next-gen SDIO modules with higher peak current. | Choose when future-proofing for higher load or consolidating multiple rails; verify thermal margin with 500mA continuous draw. |
Compared with MAX4833EUT25BD3, the MAX4833ETT25BD3 offers superior thermal performance in compact layouts; compared with MAX4836ETT25BD3, it trades current capacity for lower quiescent current and smaller die size - critical for battery runtime in portable designs.
Availability
MAX4833ETT25BD3 is available at Aetrix Electronics and suitable for USB ports, GPS systems, notebook subsystems, and SDIO interface regulation requiring stable component supply across industrial temperature range (-40°C to +85°C).
Supply support for MAX4833ETT25BD3 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 connectivity applications in portable, industrial, and automotive systems.
The MAX4832/MAX4833 product line targets space-constrained, battery-operated devices requiring ultra-low IQ, accurate current limiting, and intelligent fault signaling - specifically optimized for SDIO, USB, and GPS power domains.
FAQ
What output voltage does the MAX4833ETT25BD3 provide?
The MAX4833ETT25BD3 provides a fixed 2.5V output voltage with ±2% accuracy over the full operating temperature range (-40°C to +85°C). This is confirmed by the "25" suffix per Maxim's naming convention (Table 1) and verified in the Electrical Characteristics table under "Output Voltage Accuracy." The device requires no external resistors to set this voltage.
What is the RESET timeout period for MAX4833ETT25BD3?
The MAX4833ETT25BD3 has a RESET timeout period of 225ms, indicated by the "D3" suffix per Table 2. This duration is guaranteed after any reset condition (e.g., VOUT drop, UVLO, thermal shutdown) terminates, ensuring the host system remains held in reset long enough for complete recovery before release.
Does MAX4833ETT25BD3 support shutdown output discharge?
Yes, MAX4833ETT25BD3 supports shutdown output discharge via an internal 900Ω resistor between OUT and GND. This feature is explicitly documented in the Electrical Characteristics table ("OUT Discharge Resistance in Shutdown") and distinguishes it from the FLAG-version MAX4832, which lacks this functionality.
What package type is used for MAX4833ETT25BD3?
MAX4833ETT25BD3 uses a 6-pin TDFN package (3mm × 3mm, 0.8mm height) with exposed paddle (EP), as denoted by the "TT" in the part number and confirmed in the Ordering Information table and Package Information section. The EP is internally connected to GND and must be externally soldered to PCB ground.
How does the soft-start function work on MAX4833ETT25BD3?
The soft-start on MAX4833ETT25BD3 is controlled by an external capacitor (CSS) connected from the SS pin to GND. The soft-start time tSS equals the capacitor value in nF (e.g., 0.1µF = 100nF → ~100ms). With CSS unconnected, tSS defaults to ~1ms. This function ramps VOUT gradually to suppress inrush current and avoid false RESET assertion during power-up.
MAX4833ETT25BD3 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):
- 0.13V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable, Reset, 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)
MAX4833ETT25BD3 FAQ
1.How can I place an order for MAX4833ETT25BD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4833ETT25BD3 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 MAX4833ETT25BD3 reliable?
The price and inventory of MAX4833ETT25BD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4833ETT25BD3 is usually 5 days.
3.What payment methods are accepted for MAX4833ETT25BD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4833ETT25BD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4833ETT25BD3?
MAX4833ETT25BD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4833ETT25BD3 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 MAX4833ETT25BD3?
For technical support, including MAX4833ETT25BD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4833ETT25BD3 requirements.
6.How does Aetrix verify that MAX4833ETT25BD3 is sourced from the original manufacturer or authorized distributors?
All MAX4833ETT25BD3 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 MAX4833ETT25BD3 meets industry standards.
7.What is the process for return or replacement of MAX4833ETT25BD3?
All MAX4833ETT25BD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4833ETT25BD3, 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 MAX4833ETT25BD3 part is unused and in its original packaging.
Return procedure for MAX4833ETT25BD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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