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Analog Devices Inc./Maxim Integrated MAX4833ETT30BD3
- Part No.:
- MAX4833ETT30BD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX4833ETT30BD3.pdf
- Description:
- IC REG LINEAR LDO 100MA
- Quantity:
- Payment:
- Shipping:
Inventory:2,252
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Product details
Overview
The MAX4833ETT30BD3 from Maxim Integrated is a 3.0V fixed-output, 100mA low-dropout linear regulator with integrated push-pull RESET output, reverse-current protection, and shutdown discharge. It operates from 2.5V to 5.5V input, delivers ≤2% output voltage accuracy over –40°C to +85°C, and features 90µA quiescent current and 0.1µA shutdown current. It serves as a fault-aware power supervisor in USB and SDIO port power rails.
For engineers reviewing the MAX4833ETT30BD3 datasheet, MAX4833ETT30BD3 pinout, MAX4833ETT30BD3 application, or MAX4833ETT30BD3 equivalent, key selection criteria include its 30ms RESET timeout (D2 option), 3.0V preset output, TDFN-6 package thermal performance, and shutdown-mode OUT discharge via internal 900Ω resistor.
Technical Context
The MAX4833ETT30BD3 implements a BiCMOS-based LDO architecture with an internal PMOS pass transistor, precision bandgap reference, and error amplifier. Its RESET function asserts low when VOUT falls below 87.5% of nominal (2.625V), with a guaranteed 30ms timeout after recovery - confirmed by Table 2 (D2 = 30ms) and Electrical Characteristics section.
It integrates soft-start control via external capacitor on SS pin (tSS = CSS in nF), reverse-current blocking at IN when VOUT ≥ VIN, and thermal shutdown at +165°C with 15°C hysteresis. The 900Ω internal discharge path activates only during SHDN = GND, distinguishing it from the FLAG-latching behavior of MAX4832 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2% over –40°C to +85°C; enables direct replacement of 3.0V logic supply without external feedback. |
| Max Load Current | 100mA guaranteed; supports SDIO/USB peripheral rail loads without derating at full temperature range. |
| Dropout Voltage | 130mV at 100mA; allows operation with VIN as low as 3.13V while maintaining regulated 3.0V output. |
| RESET Timeout | 30ms (D2 suffix); prevents false system resets during brief VOUT sags, e.g., during USB hot-plug transients. |
| Quiescent Current | 90µA typical at 25°C; minimizes standby power in battery-backed portable devices like GPS and PDAs. |
| Shutdown Current | 0.1µA maximum; ensures µA-level system sleep current when SHDN is asserted. |
| Reverse Current | <2µA when VOUT = 5.5V, VIN = 0V; eliminates backfeed into shared input rails during partial system power-down. |
Pinout & Package
MAX4833ETT30BD3 is housed in a 3mm × 3mm × 0.8mm exposed-pad TDFN-6 package (package code T633-1), with EP internally connected to GND for enhanced thermal dissipation. The package is rated for –40°C to +85°C operation and requires EP soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Power Supply | Accepts 2.5V–5.5V; requires 0.1µF ceramic bypass to GND placed adjacent to pin for PSRR stability. |
| 2 (GND) | Ground Reference | Common return for all internal circuits; connects to EP for lowest thermal resistance path. |
| 3 (SHDN) | Active-Low Enable | Pulled high to IN for normal operation; pulled low disables regulator and activates 900Ω OUT discharge path. |
| 4 (RESET) | Push-Pull Reset Output | Asserts low when VOUT < 2.625V, VIN < 2.25V, SHDN low, or thermal shutdown; remains low 30ms post-recovery. |
| 5 (SS) | Soft-Start Control | Capacitor-to-GND sets ramp time (tSS = CSS in nF); floating = 1ms default; prevents inrush-induced false reset. |
| 6 (OUT) | Regulated Output | Delivers 3.0V; requires ≥3.3µF ceramic capacitor with ESR < 0.2Ω for stability across full load/temperature range. |
Key Features
| Feature | Design Value |
|---|---|
| Shutdown Output Discharge | Internal 900Ω resistor discharges OUT to GND during SHDN = low - eliminates residual voltage that could disrupt downstream logic sequencing. |
| Accurate RESET Threshold | VRESET = 0.875 × VOUT (2.625V for 3.0V version); tight tolerance avoids premature reset during line/load transients. |
| Reverse-Current Protection | Blocks >99.9% of reverse current (≤2µA max) when VOUT > VIN - critical for multi-rail systems sharing common inputs. |
| Adjustable Soft-Start | tSS programmable from 1ms (no cap) to 150ms (0.1µF); eliminates false RESET assertion during startup inrush. |
| Thermal Shutdown with Hysteresis | +165°C trip / +150°C recovery; enables safe pulsed operation under sustained overload without latch-off. |
Applications
| USB Host Port Power Management | SDIO Card Slot Regulation |
|---|---|
|
Use Scenario: Regulating 3.0V supply for USB 2.0 downstream ports with overcurrent detection and reset signaling. IC Role / Device Role / Timing Role: LDO regulator with integrated RESET output monitors VOUT integrity and signals host controller upon undervoltage events. Use Value: Eliminates need for discrete reset IC and current-sense circuitry; 30ms timeout prevents spurious resets during plug-in transients. |
Use Scenario: Providing stable 3.0V rail to SDIO memory cards in notebook computers and handheld devices. IC Role / Device Role / Timing Role: Fault-tolerant power supervisor that asserts RESET if card insertion causes VOUT sag or short-circuit. Use Value: Ensures clean power-up sequencing and reliable card detection via RESET signal to baseband processor. |
| GPS Receiver Module Supply | Cell Phone Baseband Core Rail |
|
Use Scenario: Powering GPS RF front-end and baseband ICs requiring low-noise, low-quiescent 3.0V supply with brownout immunity. IC Role / Device Role / Timing Role: Low-IQ LDO with RESET output acts as both regulator and system health monitor for GNSS modules. Use Value: 90µA IQ extends battery life; 30ms RESET hold guarantees MCU reset completion before reinitialization. |
Use Scenario: Delivering 3.0V to cellular baseband processors during active and sleep modes with fast transient response. IC Role / Device Role / Timing Role: High-stability LDO with shutdown discharge ensures clean power-down of core logic blocks. Use Value: Internal 900Ω discharge path removes residual charge from decoupling caps, preventing latch-up on wake-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-RESET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4833EUT30BD2-T | SOT23-6 package (vs. TDFN-6); same 3.0V output, 30ms RESET, and electrical specs. | Larger footprint and higher thermal resistance; suitable where board space permits and thermal load is light. | Select when SOT23 assembly infrastructure exists and thermal margin exceeds 100mA continuous load. |
| MAX4836ETT30BD2-T | 500mA output current rating; otherwise identical pinout, RESET timing, and feature set. | Supports higher-power peripherals (e.g., USB 3.0 hubs, high-speed SDXC cards) without redesign. | Choose when future-proofing for increased load or when existing layout allows same TDFN-6 footprint with higher current headroom. |
Compared with MAX4833ETT30BD3, the SOT23 variant trades thermal performance for assembly simplicity, while the 500mA MAX4836 offers scalable current capacity within identical footprint and RESET behavior - enabling drop-in upgrades without changing PCB layout or firmware timing assumptions.
Availability
MAX4833ETT30BD3 is available at Aetrix Electronics and suitable for USB ports and devices, SDIO card slots, and GPS receiver modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MAX4833ETT30BD3 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, communications, and consumer applications.
The MAX4833ETT30BD3 belongs to Maxim's ultra-low-IQ LDO family engineered specifically for portable and battery-powered systems needing accurate reset supervision alongside efficient regulation - not general-purpose power conversion.
FAQ
What is the exact RESET threshold voltage for MAX4833ETT30BD3?
The MAX4833ETT30BD3 has a RESET threshold of 87.5% of its nominal 3.0V output, equaling 2.625V. This value is guaranteed across –40°C to +85°C per Electrical Characteristics table, with ±2.5% tolerance on the threshold itself (0.85× to 0.90× VOUT). The MAX4833ETT30BD3 asserts RESET low whenever VOUT drops below this level, and holds it low for 30ms after recovery.
Does MAX4833ETT30BD3 provide output discharge during shutdown?
Yes, the MAX4833ETT30BD3 includes an internal 900Ω discharge path from OUT to GND activated when SHDN is pulled low. This feature ensures rapid removal of residual charge from output capacitors, preventing unintended logic states in downstream circuitry during power-down sequences. This distinguishes MAX4833ETT30BD3 from the MAX4832 series, which lacks discharge capability.
What package type and dimensions does MAX4833ETT30BD3 use?
The MAX4833ETT30BD3 uses a 6-pin TDFN package (3mm × 3mm × 0.8mm, package code T633-1) with an exposed paddle internally connected to GND. The exposed pad must be soldered to a PCB ground plane to achieve specified thermal performance (1951.2mW at +70°C). Pin pitch is 0.65mm, and the device is compatible with standard reflow profiles for lead-free assembly.
Can MAX4833ETT30BD3 be used with input voltages below 2.5V?
No, the MAX4833ETT30BD3 has a minimum operating input voltage of 2.5V, as specified in Absolute Maximum Ratings and Electrical Characteristics. Input undervoltage lockout (UVLO) triggers at 2.00V to 2.25V (rising), but functional regulation requires VIN ≥ 2.5V. Attempting to operate below 2.5V may result in unregulated output, RESET assertion, or undefined behavior - the MAX4833ETT30BD3 is not rated for sub-2.5V operation.
How is the soft-start time configured on MAX4833ETT30BD3?
The soft-start time (tSS) of MAX4833ETT30BD3 is set by connecting a capacitor (CSS) from the SS pin to GND. The relationship is tSS = CSS (in nF), yielding 10ms for 10nF, 100ms for 0.1µF, etc. With SS left floating, tSS defaults to 1ms. This programmable ramp prevents inrush current spikes and false RESET assertions during power-up - a key design advantage of the MAX4833ETT30BD3 over fixed-tSS regulators.
MAX4833ETT30BD3 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):
- 3V
- 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)
MAX4833ETT30BD3 FAQ
1.How can I place an order for MAX4833ETT30BD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4833ETT30BD3 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 MAX4833ETT30BD3 reliable?
The price and inventory of MAX4833ETT30BD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4833ETT30BD3 is usually 5 days.
3.What payment methods are accepted for MAX4833ETT30BD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4833ETT30BD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4833ETT30BD3?
MAX4833ETT30BD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4833ETT30BD3 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 MAX4833ETT30BD3?
For technical support, including MAX4833ETT30BD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4833ETT30BD3 requirements.
6.How does Aetrix verify that MAX4833ETT30BD3 is sourced from the original manufacturer or authorized distributors?
All MAX4833ETT30BD3 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 MAX4833ETT30BD3 meets industry standards.
7.What is the process for return or replacement of MAX4833ETT30BD3?
All MAX4833ETT30BD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4833ETT30BD3, 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 MAX4833ETT30BD3 part is unused and in its original packaging.
Return procedure for MAX4833ETT30BD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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