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Analog Devices Inc./Maxim Integrated MAX4832ETT33C+T
- Part No.:
- MAX4832ETT33C+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX4832ETT33C+T.pdf
- Description:
- IC REG LINEAR 3.3V 100MA 6TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,228
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Product details
Overview
MAX4832ETT33C+T from Maxim Integrated is a 100mA, 3.3V fixed-output low-dropout 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 ≤130mV dropout at full load, features 90µA quiescent current, and includes reverse-current protection and thermal shutdown. It serves as a protected power rail for USB peripherals and SDIO interfaces in portable electronics.
For engineers reviewing the MAX4832ETT33C+T datasheet, MAX4832ETT33C+T pinout, MAX4832ETT33C+T application, or MAX4832ETT33C+T equivalent, key selection criteria include its 3.3V preset output, FLAG-based fault signaling (not RESET), TDFN-6 package footprint, soft-start programmability via external capacitor, and guaranteed 100mA current limit with blanking-time latching behavior.
Technical Context
The MAX4832ETT33C+T implements a BiCMOS-based LDO architecture with an internal P-channel pass transistor, precision bandgap reference, and error amplifier. Its FLAG function asserts low only after sustained overcurrent exceeds the 115–135mA limit for longer than the programmable blanking time (5–17ms), preventing false triggers during startup transients.
Soft-start is controlled by an external capacitor on the SS pin, enabling adjustable output ramp time (1ms minimum internal, up to 150ms with 0.1µF). Reverse-current protection actively disables the pass device when VOUT ≥ VIN, limiting reverse leakage to ≤2µA - critical for battery-backed or multi-rail systems where backfeed must be avoided.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% over -40°C to +85°C - ensures stable logic-level supply for 3.3V I/O domains without external feedback. |
| Max Load Current | 100mA continuous - sufficient for powering single-chip peripherals like SD card controllers or USB PHYs. |
| Dropout Voltage | 130mV at 100mA - enables regulation from 3.43V input, supporting operation down to single-cell Li-ion (3.4V) or 3.6V supply rails. |
| Quiescent Current | 90µA at full load - minimizes standby power loss in always-on subsystems such as GPS receivers or real-time clocks. |
| Shutdown Current | 0.1µA - reduces system-level leakage during deep sleep, critical for multi-week battery life in portable devices. |
| Current Limit | 115–135mA - provides robust short-circuit protection while allowing brief inrush peaks during peripheral enumeration. |
| Operating Input Range | 2.5V to 5.5V - compatible with wide-input DC-DC outputs, USB VBUS (4.75–5.25V), and regulated 3.3V/5V system rails. |
Pinout & Package
MAX4832ETT33C+T is housed in a 3mm × 3mm, 0.8mm-thick TDFN-6 package with exposed paddle (EP) internally and externally connected to GND for enhanced thermal dissipation. The package supports reflow soldering and achieves 24.4mW/°C derating above +70°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power Input | Bypassed with 0.1µF ceramic capacitor; accepts 2.5V–5.5V input; feeds internal pass transistor and bias circuitry. |
| 2 GND | Ground Reference | Primary return path for load, control, and bias currents; EP pad must be soldered to PCB ground plane for thermal integrity. |
| 3 SHDN | Active-Low Enable | Pulling low disables regulator, reducing IQ to 0.1µA; tied high or to IN for always-on operation. |
| 4 FLAG | Open-Drain Fault Indicator | Asserts low when sustained overcurrent exceeds limit for >tBLANK (5–17ms); requires external pull-up for logic-level interface. |
| 5 SS | Soft-Start Control | Connects to GND via capacitor (CSS) to set output rise time (1ms–150ms); floating = 1ms default. |
| 6 OUT | Regulated Output | Delivers 3.3V ±2%; requires ≥3.3µF ceramic capacitor with ESR <0.2Ω for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Accurate current-limiting switch | Guaranteed 115–135mA limit with ±5% tolerance - enables predictable fault handling without external sense resistors. |
| FLAG with blanking time | Programmable 5–17ms delay before latch-off - prevents false triggering during capacitive load charging or hot-plug events. |
| Reverse-current protection | IN leakage ≤2µA when VOUT ≥ VIN - eliminates need for external blocking diode in battery backup or dual-supply paths. |
| Ultra-low shutdown current | 0.1µA max - extends battery life in applications requiring periodic wake-up (e.g., GPS tracking beacons). |
| Thermal shutdown with hysteresis | +165°C trip / +150°C recovery - provides self-resetting protection during sustained overload without manual reset. |
Applications
| USB Peripheral Power Management | SDIO Card Interface Supply |
|---|---|
|
Use Scenario: Powering USB 2.0 transceivers or hub controllers in notebook docking stations where input voltage varies between 3.3V and 5V. IC Role / Device Role / Timing Role: Provides regulated 3.3V rail with overcurrent flagging to detect cable shorts or faulty downstream devices before damage occurs. Use Value: Eliminates need for discrete current-sense + comparator circuitry; FLAG signal directly interfaces with host µC GPIO for automatic port disable. |
Use Scenario: Supplying SDIO host controllers in handheld PDAs where compact size and low quiescent current are mandatory. IC Role / Device Role / Timing Role: Delivers stable 3.3V under dynamic load (0–100mA) while suppressing inrush via soft-start to avoid brownout of shared system rails. Use Value: 90µA IQ and 1ms–150ms programmable soft-start extend battery runtime and prevent system reset during SD card insertion. |
| GPS Receiver Bias Rail | Cell Phone Baseband Subsystem |
|
Use Scenario: Powering GPS RF front-end and baseband ICs in automotive navigation units operating across wide temperature (-40°C to +85°C). IC Role / Device Role / Timing Role: Acts as protected LDO with thermal shutdown and reverse-current blocking to isolate GPS module from main battery during ignition transients. Use Value: Guaranteed -40°C to +85°C operation and ≤130mV dropout ensure reliable lock acquisition even at cold cranking voltages (~6.5V battery sag). |
Use Scenario: Supplying auxiliary logic blocks (e.g., SIM interface, audio codec) in GSM/UMTS handsets sharing a common 3.6V Li-ion battery. IC Role / Device Role / Timing Role: Regulates 3.3V from battery or PMIC output; FLAG alerts baseband processor of overcurrent caused by ESD event or connector short. Use Value: Open-drain FLAG allows level-shifting to 1.8V logic domain; 0.1µA shutdown current preserves battery during standby modes lasting days. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO-with-fault-signaling applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4832EUT33C+T | SOT23-6 package (3.0mm × 1.7mm), higher thermal resistance (9.1mW/°C), same electrical specs. | Preferred for space-constrained layouts where board area is less critical than height; lower thermal performance limits sustained 100mA in sealed enclosures. | Select when footprint compatibility with legacy SOT23 designs is required and thermal margin permits. |
| MAX4834ETT33C+T | 250mA rated output, identical pinout and FLAG functionality, higher dropout (150mV at 250mA), same 90µA IQ. | Supports higher-current peripherals (e.g., USB 3.0 PHYs, multi-lane SDIO) without redesigning PCB layout. | Choose when future-proofing for increased load or when system-level current demand exceeds 100mA. |
Compared with MAX4832ETT33C+T, the SOT23 variant trades thermal performance for smaller footprint, while the MAX4834ETT33C+T retains identical packaging but doubles current capability - both preserve FLAG signaling and soft-start programmability, making them drop-in upgrades for thermal or capacity headroom.
Availability
MAX4832ETT33C+T is available at Aetrix Electronics and suitable for USB ports and devices, SDIO interfaces, and GPS systems requiring stable component supply, extended temperature operation, and integrated overcurrent protection.
Supply support for MAX4832ETT33C+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, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX4832/MAX4833 family targets portable and battery-powered systems needing compact, low-IQ LDOs with intelligent fault reporting - specifically addressing reliability gaps in USB, SDIO, and GPS power rails where overcurrent and reverse-feed risks are prevalent.
FAQ
What is the output voltage tolerance of the MAX4832ETT33C+T over temperature?
The MAX4832ETT33C+T maintains output voltage within ±2% of 3.3V across the full -40°C to +85°C operating range. At +25°C, typical accuracy is ±1%, and normalized output voltage drift versus temperature is less than ±0.4% from -40°C to +85°C under 100mA load, as confirmed in the Typical Operating Characteristics plot (toc22).
Does the MAX4832ETT33C+T provide reverse-current protection, and how is it implemented?
Yes, the MAX4832ETT33C+T includes active reverse-current protection that disables the internal P-channel pass transistor when VOUT ≥ VIN, limiting reverse leakage to ≤2µA. This eliminates the need for an external blocking diode in battery backup or multi-rail systems where backfeed could disrupt upstream supplies or drain batteries.
How does the FLAG output behave during a short-circuit event on the MAX4832ETT33C+T?
When the output is shorted to GND, the MAX4832ETT33C+T limits current to 115–135mA. The FLAG output remains high until the overcurrent persists longer than the blanking time (5–17ms), then asserts low and latches off the pass transistor. Recovery requires toggling SHDN or cycling IN - ensuring fault persistence is confirmed before system intervention.
Can the soft-start time of the MAX4832ETT33C+T be adjusted, and what capacitor value yields a 50ms ramp?
Yes, soft-start time (tSS) is set by an external capacitor (CSS) from SS pin to GND, with tSS ≈ CSS (in nF) ms. For a 50ms ramp, connect a 50nF capacitor (e.g., 47nF standard value). The device guarantees ≥1ms soft-start even with SS floating, and typical values range from 10nF (10ms) to 100nF (100ms), as validated in toc09 and toc10.
What is the maximum allowable output capacitor ESR for stable operation of the MAX4832ETT33C+T?
The MAX4832ETT33C+T requires an output capacitor with ESR <0.2Ω for stable operation across -40°C to +85°C and up to 100mA load. A minimum 3.3µF X7R ceramic capacitor meets this requirement; larger values (e.g., 10µF) improve PSRR and transient response but must maintain ESR compliance - verified in the Stable Region plot (toc06).
MAX4832ETT33C+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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, Soft Start
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Soft Start
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN (3x3)
MAX4832ETT33C+T FAQ
1.How can I place an order for MAX4832ETT33C+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4832ETT33C+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 MAX4832ETT33C+T reliable?
The price and inventory of MAX4832ETT33C+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4832ETT33C+T is usually 5 days.
3.What payment methods are accepted for MAX4832ETT33C+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4832ETT33C+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4832ETT33C+T?
MAX4832ETT33C+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4832ETT33C+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 MAX4832ETT33C+T?
For technical support, including MAX4832ETT33C+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4832ETT33C+T requirements.
6.How does Aetrix verify that MAX4832ETT33C+T is sourced from the original manufacturer or authorized distributors?
All MAX4832ETT33C+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 MAX4832ETT33C+T meets industry standards.
7.What is the process for return or replacement of MAX4832ETT33C+T?
All MAX4832ETT33C+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4832ETT33C+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 MAX4832ETT33C+T part is unused and in its original packaging.
Return procedure for MAX4832ETT33C+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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