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Analog Devices Inc./Maxim Integrated MAX4833EUT33BD3-T
- Part No.:
- MAX4833EUT33BD3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6
- Datasheet:
-
MAX4833EUT33BD3-T.pdf
- Description:
- IC REG LINEAR LDO 100MA
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
The MAX4833EUT33BD3-T from Maxim Integrated is a 3.3V, 100mA low-dropout linear regulator with integrated current-limiting switch and active-low push-pull RESET output. It operates from 2.5V to 5.5V input, features 130mV dropout at 100mA, 90µA quiescent current, and 225ms RESET timeout (D3 option). It delivers precise power sequencing and fault detection in USB port power management.
For engineers reviewing the MAX4833EUT33BD3-T datasheet, MAX4833EUT33BD3-T pinout, MAX4833EUT33BD3-T application, or MAX4833EUT33BD3-T equivalent, this page provides verified electrical parameters, SOT23-6 package layout, RESET timing behavior, shutdown discharge capability, and validated alternative options for portable and embedded power-rail monitoring.
Technical Context
The MAX4833EUT33BD3-T integrates a PMOS pass transistor with reverse-current protection, thermal shutdown at +165°C (15°C hysteresis), and a precision bandgap reference. Its RESET function asserts low when VOUT drops below 0.875 × VOUT (2.906V nominal), with fixed 225ms timeout after fault clearance.
Soft-start is programmable via external capacitor on SS pin (tSS = CSS in nF); with no capacitor, tSS = 1ms. The device includes 900Ω internal OUT-to-GND discharge path during shutdown and guarantees ≤0.1µA shutdown current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V ±2% over -40°C to +85°C - ensures stable logic rail for 3.3V microcontrollers and peripherals |
| Max Load Current | 100mA guaranteed - sufficient for SDIO/USB peripheral power without derating |
| Dropout Voltage | 130mV at 100mA - enables operation down to VIN = 3.43V while maintaining regulation |
| Quiescent Current | 90µA typical - minimizes battery drain in always-on monitoring circuits |
| RESET Timeout | 225ms (D3 suffix) - prevents spurious resets during brief load transients or brownouts |
| Shutdown Current | 0.1µA - enables ultra-low-power sleep states in portable devices |
| RESET Threshold | 0.875 × VOUT = 2.906V - triggers reset before downstream logic enters undefined state |
Pinout & Package
MAX4833EUT33BD3-T uses a 6-pin SOT23-6 package (JEDEC MO-178AA), with exposed pad internally connected to GND for thermal performance. 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 | Power input | Bypassed with 0.1µF ceramic cap; accepts 2.5V–5.5V supply; UVLO triggers at 2.25V |
| 2 - GND | Ground reference | Common return for all internal circuits and external capacitors |
| 3 - SHDN | Active-low enable | Pulled low to enter 0.1µA shutdown; high or tied to IN for normal operation |
| 4 - RESET | Push-pull reset output | Asserts low on VOUT undervoltage, thermal shutdown, or SHDN low; holds low 225ms post-fault |
| 5 - SS | Soft-start control | Capacitor to GND sets ramp time (tSS = CSS in nF); floating = 1ms default |
| 6 - OUT | Regulated output | 3.3V output; requires ≥3.3µF ceramic cap with ESR <0.2Ω; discharges via 900Ω internal resistor in shutdown |
Key Features
| Feature | Design Value |
|---|---|
| Integrated RESET with programmable timeout | 225ms (D3) ensures reliable system reset without external RC timing components |
| Shutdown output discharge | 900Ω internal pull-down clears residual charge on OUT during SHDN assertion - eliminates need for external bleed resistor |
| Reverse-current protection | Blocks >VIN backfeed from OUT; limits reverse current to <2µA when VOUT = 5.5V and VIN = 0V |
| Accurate current limit | 115–135mA threshold prevents damage during short-circuit while sustaining regulated output under overload |
| Ultra-low quiescent current | 90µA operating / 0.1µA shutdown enables multi-year battery life in IoT sensor nodes |
Applications
| USB Port Power Management | SDIO Card Power Control |
|---|---|
Use Scenario: Supplies clean 3.3V power to USB peripheral ICs while detecting overcurrent or undervoltage faults. IC Role / Device Role / Timing Role: LDO regulator with integrated RESET flag for host controller fault signaling and automatic recovery sequencing. Use Value: Eliminates discrete reset supervisor and current-sense circuitry; 225ms RESET timeout prevents false resets during plug-in transients. |
Use Scenario: Powers SDIO interface in handheld devices, enabling hot-plug detection and safe card insertion/removal. IC Role / Device Role / Timing Role: Regulator with soft-start and RESET output to coordinate SD host controller initialization and voltage validation. Use Value: Programmable soft-start (via SS pin) suppresses inrush current; RESET deassertion confirms stable 3.3V rail before SD command execution. |
| Notebook Subsystem Rail | GPS Module Power Sequencing |
Use Scenario: Provides dedicated 3.3V supply to WLAN/BT combo modules with fault reporting to baseband processor. IC Role / Device Role / Timing Role: Current-limited LDO with RESET output used as power-good indicator and thermal fault notifier. Use Value: Thermal shutdown at +165°C and latch-free operation allow sustained 100mA delivery; RESET pulse alerts host before thermal throttling occurs. |
Use Scenario: Powers GPS receiver IC requiring strict voltage tolerance and fast fault response during satellite signal acquisition. IC Role / Device Role / Timing Role: Precision 3.3V regulator with 2.906V RESET threshold ensuring GPS logic remains functional until VOUT drops below safe margin. Use Value: 0.875×VOUT threshold provides 394mV guardband; 225ms timeout accommodates GPS cold-start voltage sag without system reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-RESET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4833ETT33D3-T | Same electrical specs, but in 3×3mm TDFN-6 package with exposed thermal pad | Better thermal performance (1951mW dissipation vs. 727mW) for higher ambient or continuous 100mA loads | Select when PCB space allows larger footprint and junction temperature exceeds 100°C in SOT23 |
| MAX4836EUT33BD3-T | Pin-compatible 500mA version; same 3.3V output, D3 timeout, RESET function, and SOT23-6 package | Supports higher-current peripherals (e.g., USB HS transceivers, multi-lane SDIO) without redesign | Choose when future-proofing for >100mA peak loads or when sharing layout with higher-current variants |
Compared with MAX4833EUT33BD3-T, the TDFN variant improves thermal headroom while retaining identical functionality, and the MAX4836EUT33BD3-T scales current capacity without altering pinout or timing-enabling drop-in upgrades where power demand increases.
Availability
MAX4833EUT33BD3-T is available at Aetrix Electronics and suitable for USB ports, SDIO interfaces, and GPS module power rails requiring stable component supply, precise reset timing, and low-quiescent-current operation in space-constrained designs.
Supply support for MAX4833EUT33BD3-T 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, sensing, and communication applications.
The MAX4833EUT33BD3-T belongs to the MAX4832/MAX4833 family of current-limited LDOs with integrated RESET/FLAG, engineered specifically for fault-aware power delivery in portable and battery-powered systems.
FAQ
What is the exact RESET threshold voltage for MAX4833EUT33BD3-T?
The MAX4833EUT33BD3-T has a RESET threshold of 0.875 × VOUT, which equals 2.906V for its 3.3V nominal output. This threshold is guaranteed across -40°C to +85°C and triggers RESET when VOUT falls below this level. The MAX4833EUT33BD3-T also asserts RESET during thermal shutdown, SHDN assertion, or VIN undervoltage (below 2.25V).
Does MAX4833EUT33BD3-T provide output discharge during shutdown?
Yes, the MAX4833EUT33BD3-T includes an internal 900Ω discharge path from OUT to GND during shutdown (SHDN = low). This actively pulls down the output capacitor, eliminating residual voltage that could interfere with system power sequencing or cause leakage in downstream circuitry. No external components are required.
What is the soft-start behavior of MAX4833EUT33BD3-T when no capacitor is connected to the SS pin?
When the SS pin of the MAX4833EUT33BD3-T is left floating or unconnected, the device defaults to a 1ms soft-start time. This fixed minimum ensures controlled output ramp-up even without external components, limiting inrush current and preventing false RESET assertions during startup. Adding a capacitor (e.g., 0.1µF) extends tSS to 100ms per the datasheet equation tSS = CSS (nF).
Can MAX4833EUT33BD3-T be used in place of MAX4832EUT33CD3-T?
No - MAX4833EUT33BD3-T and MAX4832EUT33CD3-T are functionally distinct: the former provides push-pull RESET (pin 4), while the latter provides open-drain FLAG (pin 4). Their pinouts differ in terminal function and drive strength. Interchanging them requires PCB modification and firmware changes to accommodate active-low push-pull vs. open-drain signaling.
What is the maximum continuous power dissipation for MAX4833EUT33BD3-T in SOT23-6 package?
The MAX4833EUT33BD3-T in SOT23-6 has a maximum continuous power dissipation of 727mW at +70°C, derating by 9.1mW/°C above that temperature. At +85°C ambient, usable dissipation drops to ~713mW. This supports up to ~100mA at 3.3V output with ~2.2V dropout (VIN = 5.5V), assuming adequate PCB copper area for heat spreading.
MAX4833EUT33BD3-T 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):
- 3.3V
- 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
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX4833EUT33BD3-T FAQ
1.How can I place an order for MAX4833EUT33BD3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4833EUT33BD3-T 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 MAX4833EUT33BD3-T reliable?
The price and inventory of MAX4833EUT33BD3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4833EUT33BD3-T is usually 5 days.
3.What payment methods are accepted for MAX4833EUT33BD3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4833EUT33BD3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4833EUT33BD3-T?
MAX4833EUT33BD3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4833EUT33BD3-T 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 MAX4833EUT33BD3-T?
For technical support, including MAX4833EUT33BD3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4833EUT33BD3-T requirements.
6.How does Aetrix verify that MAX4833EUT33BD3-T is sourced from the original manufacturer or authorized distributors?
All MAX4833EUT33BD3-T 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 MAX4833EUT33BD3-T meets industry standards.
7.What is the process for return or replacement of MAX4833EUT33BD3-T?
All MAX4833EUT33BD3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4833EUT33BD3-T, 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 MAX4833EUT33BD3-T part is unused and in its original packaging.
Return procedure for MAX4833EUT33BD3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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