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Analog Devices Inc./Maxim Integrated MAX4833EUT30BD3
- Part No.:
- MAX4833EUT30BD3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX4833EUT30BD3.pdf
- Description:
- IC REG LINEAR LDO 100MA
- Quantity:
- Payment:
- Shipping:
Inventory:1,526
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Product details
Overview
The MAX4833EUT30BD3 from Maxim Integrated is a 100mA, 3.0V fixed-output LDO linear regulator with integrated push-pull RESET output, reverse-current protection, and programmable soft-start. 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 - designed for USB port power management in portable electronics.
For engineers reviewing the MAX4833EUT30BD3 datasheet, MAX4833EUT30BD3 pinout, MAX4833EUT30BD3 application, or MAX4833EUT30BD3 equivalent, key selection criteria include its 30ms RESET timeout (D2 suffix), shutdown discharge via internal 900Ω resistor, 130mV dropout at 100mA, thermal shutdown at +165°C, and SOT23-6 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX4833EUT30BD3 integrates an accurate current-limiting switch with a dedicated push-pull RESET output that asserts low when VOUT drops below 87.5% of nominal (2.625V), after a 30ms timeout period. Its soft-start is externally programmable via SS pin capacitor, enabling controlled ramp-up to suppress inrush current during power-on.
Reverse-current protection disables the pass transistor when VOUT > VIN, limiting reverse leakage to ≤2µA. Thermal shutdown activates at +165°C with 15°C hysteresis, and shutdown mode reduces quiescent current to 0.1µA while discharging OUT through an internal 900Ω path - critical for system-level power sequencing and fault recovery in battery-powered devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2% over –40°C to +85°C - ensures stable core logic supply for microcontrollers and USB PHYs. |
| Max Load Current | 100mA guaranteed - sufficient for SDIO peripherals, GPS baseband ICs, and low-power USB device ports. |
| Dropout Voltage | 130mV at 100mA - enables operation down to VIN = 3.13V, supporting single-cell Li-ion or 3.3V rail margining. |
| RESET Timeout | 30ms (D2 suffix) - filters transient dips while ensuring reliable system reset during sustained brownout conditions. |
| Quiescent Current | 90µA active / 0.1µA shutdown - extends battery life in always-on monitoring circuits and sleep-mode applications. |
| Soft-Start Time | Programmable (1ms min to 150ms max) via SS-to-GND capacitor - prevents false resets during startup by controlling VOUT slew rate. |
| Shutdown Discharge | Internal 900Ω path from OUT to GND - actively drains output capacitance during SHDN assertion, enabling fast state transitions. |
Pinout & Package
MAX4833EUT30BD3 uses a 6-pin SOT23-6 package (JEDEC MO-178AA) with exposed pad connected internally to GND for thermal dissipation. Pin 1 = IN, Pin 2 = GND, Pin 3 = SHDN, Pin 4 = RESET, Pin 5 = SS, Pin 6 = OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Power Supply | Bypassed with 0.1µF ceramic capacitor; accepts 2.5V–5.5V input for regulated 3.0V output. |
| 2 (GND) | Ground Reference | Common return for all internal circuits; connects to PCB ground plane for noise immunity and thermal conduction. |
| 3 (SHDN) | Active-Low Enable | Pulled high (≥1.4V) for normal operation; driven low to enter 0.1µA shutdown with OUT discharge enabled. |
| 4 (RESET) | Push-Pull Reset Output | Asserts low when VOUT < 2.625V, VIN < 2.25V, or SHDN = low; remains low for 30ms after fault clears. |
| 5 (SS) | Soft-Start Control | Connect external capacitor (e.g., 0.01µF → 10ms tSS) to program output rise time and prevent inrush-induced glitches. |
| 6 (OUT) | Regulated Output | Delivers 3.0V ±2% to load; requires ≥3.3µF ceramic capacitor (ESR < 0.2Ω) for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated RESET with 30ms timeout | Ensures deterministic system recovery after brownout without requiring external RC timing components. |
| Shutdown output discharge | 900Ω internal pull-down eliminates need for external discharge FET or resistor, simplifying BOM and layout. |
| Reverse-current protection | Blocks backfeed from 3.0V output to input rail - essential when multiple supplies share common paths or during hot-swap events. |
| Ultra-low 0.1µA shutdown current | Enables multi-year battery operation in IoT sensors and wearable devices with infrequent wake cycles. |
| Thermal shutdown with hysteresis | +165°C trip / +150°C release prevents oscillation under continuous overload, supporting robust field reliability. |
Applications
| USB Device Port Power | GPS Baseband Module Supply |
|---|---|
|
Use Scenario: Powers USB peripheral ICs (e.g., USB transceivers, hub controllers) from a shared 3.3V or 5V rail in notebooks and docking stations. IC Role / Device Role / Timing Role: Provides clean, regulated 3.0V supply with RESET signaling to host MCU upon undervoltage or thermal fault. Use Value: Prevents enumeration failures by holding USB reset until VOUT stabilizes post-soft-start and rejecting short transients via 30ms timeout. |
Use Scenario: Supplies 3.0V to GPS RF front-end and baseband processors in handheld navigation units and asset trackers. IC Role / Device Role / Timing Role: Delivers low-noise, low-quiescent current bias with thermal and overcurrent protection during cold-start satellite acquisition. Use Value: Maintains valid GPS lock during battery voltage sag by sustaining regulation down to 3.13V input and asserting RESET only after sustained dropout. |
| SDIO Card Interface Regulator | Cell Phone Subsystem Rail |
|
Use Scenario: Generates 3.0V for SDIO host controllers and memory cards in PDAs and industrial HMIs where card insertion causes load surges. IC Role / Device Role / Timing Role: Limits inrush via soft-start and protects against short-circuit faults using accurate 115–135mA current limit. Use Value: Eliminates need for external current-sense circuitry while preventing bus collapse during hot-plug events. |
Use Scenario: Powers camera sensor interface, audio codec, or Bluetooth radio subsystems in feature phones and entry-level smartphones. IC Role / Device Role / Timing Role: Acts as secondary LDO with RESET-driven system watchdog reset upon supply instability or thermal overload. Use Value: Enables graceful subsystem shutdown and recovery without full SoC reset, improving user experience and firmware resilience. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator with RESET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4833ETT30D2-T | TDFN-6 package (3×3mm) vs. SOT23-6; identical electrical specs and D2 30ms timeout. | Better thermal performance (1951mW PD) and smaller footprint - preferred for high-density or thermally constrained layouts. | Select when board space or junction temperature margin is critical; requires rework of solder stencil and layout. |
| MAX4836EUT30BD3 | 500mA output capability, same 3.0V/30ms RESET, but larger dropout (200mV @ 500mA) and higher IQ (120µA). | Supports higher-current loads like USB OTG hosts or dual-SIM RF modules where 100mA is insufficient. | Choose only if load exceeds 100mA; not drop-in due to different thermal and layout requirements despite shared pinout family. |
Compared with MAX4833ETT30D2-T, the MAX4833EUT30BD3 offers identical regulation and RESET behavior in a more manufacturable SOT23 package, while MAX4836EUT30BD3 trades efficiency and size for higher drive strength - making the original optimal for cost-sensitive, space-limited 100mA applications.
Availability
MAX4833EUT30BD3 is available at Aetrix Electronics and suitable for USB device ports, GPS baseband modules, SDIO interfaces, and cell phone subsystem rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MAX4833EUT30BD3 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 across industrial, automotive, and consumer markets.
The MAX4833 belongs to Maxim's ultra-low-IQ LDO family targeting portable and battery-operated systems where regulated power integrity, fault signaling, and minimal standby consumption are critical design requirements.
FAQ
What is the exact RESET threshold voltage for MAX4833EUT30BD3?
The MAX4833EUT30BD3 asserts RESET when VOUT falls below 87.5% of its nominal 3.0V output, i.e., 2.625V. This threshold is guaranteed over –40°C to +85°C with ±2.5% tolerance, and the RESET signal remains low for the full 30ms timeout period after the condition clears - ensuring robust immunity to brief voltage sags.
Does MAX4833EUT30BD3 support adjustable output voltage?
No, MAX4833EUT30BD3 provides a factory-trimmed fixed 3.0V output. The "30" in the part number denotes the 3.0V option per Maxim's suffix table. Adjustable versions require external feedback resistors and are not offered in the MAX4832/MAX4833 family - only preset voltages (1.8V, 2.5V, 2.8V, 3.0V, 3.3V) are available.
How does the soft-start function work on MAX4833EUT30BD3?
The MAX4833EUT30BD3 implements soft-start via the SS pin: connecting a capacitor (CSS) from SS to GND sets the output rise time (tSS ≈ CSS in nF). With no capacitor, tSS is fixed at 1ms. For MAX4833EUT30BD3, a 0.01µF CSS yields ~10ms tSS - preventing inrush current spikes and false RESET assertions during power-up.
What is the purpose of the shutdown discharge feature in MAX4833EUT30BD3?
The shutdown discharge feature in MAX4833EUT30BD3 uses an internal 900Ω resistor between OUT and GND during SHDN = low. This actively discharges output capacitance, ensuring rapid VOUT decay for precise power sequencing - eliminating the need for external discharge circuitry and reducing BOM count in battery-powered systems.
Can MAX4833EUT30BD3 be used with input voltages below 2.5V?
No, MAX4833EUT30BD3 requires a minimum input voltage of 2.5V per its Absolute Maximum Ratings and Electrical Characteristics. Operation below this violates the specified operating range and may cause unpredictable RESET behavior, dropout failure, or loss of regulation - especially critical given its 130mV dropout at 100mA demands VIN ≥ 3.13V for full-load 3.0V output.
MAX4833EUT30BD3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- 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:
- SOT-23-6
MAX4833EUT30BD3 FAQ
1.How can I place an order for MAX4833EUT30BD3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4833EUT30BD3 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 MAX4833EUT30BD3 reliable?
The price and inventory of MAX4833EUT30BD3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4833EUT30BD3 is usually 5 days.
3.What payment methods are accepted for MAX4833EUT30BD3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4833EUT30BD3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4833EUT30BD3?
MAX4833EUT30BD3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4833EUT30BD3 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 MAX4833EUT30BD3?
For technical support, including MAX4833EUT30BD3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4833EUT30BD3 requirements.
6.How does Aetrix verify that MAX4833EUT30BD3 is sourced from the original manufacturer or authorized distributors?
All MAX4833EUT30BD3 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 MAX4833EUT30BD3 meets industry standards.
7.What is the process for return or replacement of MAX4833EUT30BD3?
All MAX4833EUT30BD3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4833EUT30BD3, 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 MAX4833EUT30BD3 part is unused and in its original packaging.
Return procedure for MAX4833EUT30BD3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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