My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4832ETT28C
- Part No.:
- MAX4832ETT28C
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX4832ETT28C.pdf
- Description:
- IC REG LINEAR 100MA LDO
- Quantity:
- Payment:
- Shipping:
Inventory:1,671
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4832ETT28C from Maxim Integrated is a 100mA, 2.8V 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 100mA, and features 90µA quiescent current, reverse-current protection, and programmable soft-start. It is used in USB ports and SDIO interfaces where precise current limiting and fault flagging are required.
For engineers reviewing the MAX4832ETT28C datasheet, MAX4832ETT28C pinout, MAX4832ETT28C application, or MAX4832ETT28C equivalent, key selection criteria include its 2.8V preset output, FLAG-based overload notification (not RESET), TDFN-6 package thermal performance, and compatibility with 3.3µF ceramic output capacitors for stable operation across –40°C to +85°C.
Technical Context
The MAX4832ETT28C integrates a PMOS pass transistor with accurate current-limit circuitry that latches off when load current exceeds 115–135mA for longer than the blanking time (5–17ms). Its FLAG output is open-drain and asserts low only after sustained overcurrent - not during startup - due to built-in blanking and soft-start control via external capacitor on SS pin.
It employs internal 1.23V reference and error amplifier to regulate 2.8V output with ±2% accuracy over temperature and load. Reverse-current protection ensures <2µA IN leakage when VOUT ≥ VIN, and thermal shutdown activates at +165°C with 15°C hysteresis to prevent damage during continuous overload.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8V ±2% over –40°C to +85°C; enables direct replacement of 2.8V logic rails without external feedback. |
| Max Load Current | 100mA guaranteed; supports power delivery to single-chip peripherals like SDIO controllers or USB transceivers. |
| Dropout Voltage | 130mV at 100mA; allows regulation from 3.0V input down to 2.8V output, critical for battery-powered systems near end-of-life. |
| Quiescent Current | 90µA at full load; minimizes standby power loss in always-on subsystems such as GPS receivers or embedded sensors. |
| Shutdown Current | 0.1µA; reduces system-level leakage when host processor disables power rail via SHDN pin. |
| Soft-Start Time | Programmable from 1ms (SS floating) to 150ms (CSS = 0.1µF); prevents inrush current-induced voltage droop on shared supply rails. |
| Current Limit Threshold | 115–135mA; provides repeatable short-circuit protection without external sensing components. |
Pinout & Package
MAX4832ETT28C uses a 6-pin TDFN package (3mm × 3mm × 0.8mm) with exposed paddle thermally and electrically connected to GND. The compact footprint supports high-density PCB layouts while enabling efficient heat dissipation in space-constrained portable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input power supply connection | Bypassed with 0.1µF ceramic capacitor; must be ≥2.5V and ≤5.5V for regulation; undervoltage lockout triggers below 2.00–2.25V. |
| 2 - GND | Ground reference | Common return path for IN, OUT, SHDN, SS, and FLAG; exposed paddle must be soldered to PCB ground plane for thermal integrity. |
| 3 - SHDN | Active-low enable/disable control | Pulled high (≥1.4V) for operation; pulled low (≤0.5V) to disable regulator and reduce IQ to 0.1µA; hysteresis prevents chatter near threshold. |
| 4 - FLAG | Open-drain overcurrent indicator | Asserts low when sustained load current > limit for > tBLANK (5–17ms); requires external pull-up; remains high during soft-start or thermal shutdown. |
| 5 - SS | Soft-start timing control | Capacitor from SS to GND sets output ramp time (tSS ≈ CSS in nF); floating yields 1ms minimum rise; eliminates false FLAG assertion at power-up. |
| 6 - OUT | Regulated 2.8V output | Requires ≥3.3µF ceramic capacitor (ESR < 0.2Ω); supplies downstream logic; reverse-current protection blocks backfeed from OUT to IN. |
Key Features
| Feature | Design Value |
|---|---|
| Accurate current-limit switch | 115–135mA threshold with latch-off behavior ensures robust short-circuit protection without external sense resistors or controllers. |
| FLAG output with blanking | Prevents false triggering during transient overloads or startup by ignoring current spikes shorter than 5–17ms. |
| Reverse-current protection | Guarantees <2µA reverse current when VOUT ≥ VIN, eliminating need for external blocking diodes in backup-power or hot-swap applications. |
| Ultra-low shutdown current | 0.1µA shutdown IQ enables multi-year battery life in maintenance-free IoT sensor nodes powered by coin cells. |
| Thermal shutdown with hysteresis | +165°C trip point with 15°C hysteresis provides self-recovering fault response during sustained overload, avoiding permanent latch-up. |
Applications
| USB Peripheral Power Management | SDIO Card Interface Regulation |
|---|---|
|
Use Scenario: Powering USB 2.0 transceivers or hub controller I/O rails in notebook computers and docking stations. IC Role / Device Role / Timing Role: LDO regulator providing clean, stable 2.8V supply with overcurrent flagging to detect cable shorts or device faults. Use Value: Prevents system-level brownouts during plug-in events via soft-start; FLAG alerts host MCU before thermal shutdown occurs. |
Use Scenario: Supplying 2.8V to SDIO host controllers and memory cards in handheld GPS units and PDAs. IC Role / Device Role / Timing Role: Fixed-output LDO delivering regulated power with reverse-current protection to avoid backfeeding into main SoC supply during card insertion/removal. Use Value: Enables hot-plug compliance without external diode; ±2% output accuracy maintains SDIO timing margins under varying load and temperature. |
| Cell Phone Baseband Core Rail | Low-Power GPS Receiver Bias |
|
Use Scenario: Powering baseband processor I/O banks or RF front-end bias circuits in feature phones with tight power budgets. IC Role / Device Role / Timing Role: Low-quiescent-current LDO supplying 2.8V with fast transient response to handle burst-mode data transmission loads. Use Value: 90µA IQ extends talk time; 130mV dropout preserves headroom from 3.0V battery; FLAG signals abnormal current draw indicating antenna mismatch or ESD event. |
Use Scenario: Providing precision 2.8V bias to GPS RF front-end LNAs and crystal oscillator buffers in portable navigation devices. IC Role / Device Role / Timing Role: Low-noise (70µVRMS), low-PSRR-sensitive LDO ensuring stable local oscillator performance and minimal phase noise degradation. Use Value: 70µVRMS output noise avoids GPS signal desensitization; thermal shutdown protects sensitive analog circuitry during enclosure overheating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4832EUT28C | SOT23-6 package (3.0mm × 1.7mm); higher thermal resistance (9.1mW/°C derating above +70°C) vs. TDFN's 24.4mW/°C. | Better suited for low-power, low-density boards where PCB area is less constrained than thermal budget. | Select MAX4832EUT28C when manual assembly or legacy SOT23 footprints are preferred; choose MAX4832ETT28C for higher power density and thermal performance. |
| MAX4834ETT28C | 250mA rated output; same FLAG function and TDFN-6 package; higher dropout (150mV at 250mA) and IQ (120µA). | Supports higher-current peripherals like dual-lane SDIO or USB 3.0 companion chips where 100mA is insufficient. | Choose MAX4834ETT28C only if load current exceeds 100mA; otherwise MAX4832ETT28C offers lower IQ and better efficiency at typical 10–50mA loads. |
Compared with MAX4832EUT28C, the MAX4832ETT28C delivers superior thermal management in compact layouts, while MAX4834ETT28C trades quiescent current and dropout for higher drive capability - making the MAX4832ETT28C optimal for 2.8V, ≤100mA, thermally sensitive applications requiring FLAG-based fault reporting.
Availability
MAX4832ETT28C is available at Aetrix Electronics and suitable for USB ports, SDIO interfaces, and GPS receiver designs requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across industrial temperature ranges.
Supply support for MAX4832ETT28C 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 was developed specifically for portable and battery-powered systems needing reliable, low-IQ LDOs with integrated fault signaling - targeting SDIO, USB, and cellular baseband power domains.
FAQ
What is the output voltage tolerance of the MAX4832ETT28C over temperature and load?
The MAX4832ETT28C guarantees ±2% output voltage accuracy across –40°C to +85°C and for load currents from 1mA to 100mA. This specification ensures stable 2.8V operation for logic interfaces like SDIO and USB, even under worst-case thermal and loading conditions. The MAX4832ETT28C achieves this using an internal 1.23V bandgap reference and precision error amplifier, with no external components required.
Does the MAX4832ETT28C provide reverse-current protection, and how is it implemented?
Yes, the MAX4832ETT28C includes integrated reverse-current protection that limits current flow from OUT to IN to <2µA when VOUT ≥ VIN. This is achieved by turning off the internal PMOS pass transistor when output voltage exceeds input voltage, eliminating the need for external blocking diodes in applications such as hot-swap or backup-power circuits. The MAX4832ETT28C maintains this protection across its full operating temperature range.
How does the FLAG output of the MAX4832ETT28C behave during startup and overload conditions?
The FLAG output of the MAX4832ETT28C remains high during soft-start and will not assert low until the blanking time (5–17ms) has elapsed after startup - preventing false trips from inrush current. During sustained overload (>115–135mA), FLAG goes low and the pass transistor latches off. Recovery requires toggling SHDN or cycling IN. The MAX4832ETT28C does not auto-restart, ensuring system-level fault handling.
What capacitor values are required for stable operation of the MAX4832ETT28C?
The MAX4832ETT28C requires a minimum 3.3µF ceramic output capacitor (X7R or better) with ESR < 0.2Ω for stability across –40°C to +85°C and up to 100mA load. A 0.1µF ceramic capacitor between IN and GND is also mandatory to suppress input transients. The MAX4832ETT28C remains stable with purely resistive or constant-current loads and does not require additional compensation components.
Can the MAX4832ETT28C be used in place of a RESET-function LDO like the MAX4833ETT28B?
No - the MAX4832ETT28C features an open-drain FLAG output for overcurrent detection, while the MAX4833ETT28B provides a push-pull RESET output for undervoltage monitoring. Their pin functions differ: Pin 4 is FLAG on MAX4832ETT28C but RESET on MAX4833ETT28B. Substituting them requires redesigning the host MCU's interrupt or reset logic. The MAX4832ETT28C is not a functional or pin-compatible replacement for MAX4833-series devices.
MAX4832ETT28C 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):
- 2.8V
- 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 Output, Soft Start
- Protection Features:
- Over Current, Over Temperature, Reverse Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN-EP (3x3)
MAX4832ETT28C FAQ
1.How can I place an order for MAX4832ETT28C through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4832ETT28C 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 MAX4832ETT28C reliable?
The price and inventory of MAX4832ETT28C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4832ETT28C is usually 5 days.
3.What payment methods are accepted for MAX4832ETT28C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4832ETT28C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4832ETT28C?
MAX4832ETT28C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4832ETT28C 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 MAX4832ETT28C?
For technical support, including MAX4832ETT28C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4832ETT28C requirements.
6.How does Aetrix verify that MAX4832ETT28C is sourced from the original manufacturer or authorized distributors?
All MAX4832ETT28C 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 MAX4832ETT28C meets industry standards.
7.What is the process for return or replacement of MAX4832ETT28C?
All MAX4832ETT28C units undergo pre-shipment inspection (PSI). If there is an issue with MAX4832ETT28C, 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 MAX4832ETT28C part is unused and in its original packaging.
Return procedure for MAX4832ETT28C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4832ETT28C Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
