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Analog Devices Inc./Maxim Integrated MAX4836ETT28C
- Part No.:
- MAX4836ETT28C
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX4836ETT28C.pdf
- Description:
- IC REG LINEAR 500MA
- Quantity:
- Payment:
- Shipping:
Inventory:719
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Product details
Overview
The MAX4836ETT28C from Maxim Integrated is a 500mA, 2.8V fixed-output low-dropout (LDO) 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 ±2% output voltage accuracy over –40°C to +85°C, features 330mV dropout at full load, and supports soft-start via external capacitor. It is used in USB port power management where precise current limiting and fault flagging are required.
For engineers reviewing the MAX4836ETT28C datasheet, MAX4836ETT28C pinout, MAX4836ETT28C application, or MAX4836ETT28C equivalent, key selection considerations include its 2.8V preset output, FLAG-based overload notification (not RESET), TDFN-6 package with exposed pad, reverse-current protection, and compatibility with 3.3µF ceramic output capacitors for stable 500mA operation.
Technical Context
The MAX4836ETT28C implements a BiCMOS-based LDO architecture with an internal PMOS pass transistor, precision bandgap reference, and error amplifier. Its FLAG function asserts low after sustained overcurrent exceeding 540–660mA for >5–17ms (blanking time), latching off the output until IN or SHDN is cycled.
It integrates soft-start control via the SS pin (capacitor-programmable rise time), thermal shutdown at +165°C with 15°C hysteresis, and reverse-current protection that limits IN leakage to ≤2µA when VOUT ≥ VIN. Shutdown reduces quiescent current from 90µA to 0.1µA.
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 Output Current | 500mA guaranteed; supports high-current peripherals like SDIO cards or USB devices without derating. |
| Dropout Voltage | 330mV at 500mA; allows regulation from 3.13V input, critical for battery-powered systems near end-of-life. |
| Quiescent Current | 90µA active / 0.1µA shutdown; extends battery life in always-on portable applications. |
| Current Limit Threshold | 540–660mA; provides accurate short-circuit and overload protection without external sensing. |
| Soft-Start Time | Programmable (1ms min to 150ms max via CSS); eliminates inrush current and false FLAG assertion during startup. |
| Operating Input Range | 2.5V to 5.5V; compatible with single-cell Li-ion, 3.3V, and 5V supply rails. |
Pinout & Package
MAX4836ETT28C uses a 6-pin TDFN package (3mm × 3mm × 0.8mm) with exposed paddle internally connected to GND for thermal dissipation. The package meets JEDEC MO229 / WEEA standards and requires PCB land pattern per drawing 21-0137I (T633-2 variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Regulator power input | Bypass with 0.1µF ceramic capacitor; minimum 2.5V input ensures regulation. |
| 2 - GND | Ground reference | Common return for all circuits; exposed paddle must be soldered to PCB GND plane. |
| 3 - SHDN | Active-low shutdown control | Pull low to reduce IQ to 0.1µA; connect to IN or >1.4V logic for enable. |
| 4 - FLAG | Open-drain overcurrent flag | Asserts low when load exceeds limit for >5–17ms; requires external pull-up for logic interface. |
| 5 - SS | Soft-start timing control | Connect capacitor (e.g., 0.01µF → 10ms rise) to program controlled VOUT ramp rate. |
| 6 - OUT | Regulated 2.8V output | Requires ≥3.3µF ceramic capacitor with ESR <0.2Ω for stability at full 500mA load. |
Key Features
| Feature | Design Value |
|---|---|
| Accurate current-limiting switch | Guaranteed 540–660mA limit with ±2% tolerance enables reliable short-circuit protection without external components. |
| FLAG output with blanking time | 5–17ms programmable blanking prevents false triggering during transient inrush or startup surges. |
| Reverse-current protection | Blocks backflow from OUT to IN (<2µA leakage), preventing battery drain or source contention in multi-rail systems. |
| Ultra-low shutdown current | 0.1µA shutdown IQ supports >10-year battery life in maintenance-free IoT sensors and backup supplies. |
| Thermal shutdown with hysteresis | +165°C trip with 15°C hysteresis ensures safe recovery after overload without oscillation or latch-up. |
Applications
| USB Port Power Switch | SDIO Card Power Management |
|---|---|
Use Scenario: Providing regulated 2.8V power to USB peripheral ICs with hot-plug detection and overcurrent protection. IC Role / Device Role / Timing Role: LDO regulator with current-limiting switch and FLAG signaling for system-level fault reporting. Use Value: Prevents bus collapse during cable short events while enabling firmware to log faults via the open-drain FLAG line. |
Use Scenario: Supplying stable 2.8V to SDIO host controllers and memory cards in handheld devices. IC Role / Device Role / Timing Role: Fixed-output LDO with soft-start to avoid SD card initialization failures caused by rapid VCC ramp. Use Value: Ensures compliant SDIO power-up timing (tR = 1–150ms) and prevents reset glitches during card insertion. |
| Notebook System Rail | Cell Phone Baseband Core Supply |
Use Scenario: Delivering 2.8V to low-power logic subsystems (e.g., touch controller, sensor hub) in ultrabooks. IC Role / Device Role / Timing Role: Low-quiescent LDO with shutdown control for dynamic power gating. Use Value: Reduces standby power by 99.9% (90µA → 0.1µA) during sleep modes without requiring external MOSFETs. |
Use Scenario: Powering baseband processor I/O banks requiring precise 2.8V with fast transient response. IC Role / Device Role / Timing Role: High-PSRR LDO (–40dB @ 10kHz) suppressing noise from switching DC/DC converters. Use Value: Maintains signal integrity on high-speed data lines (e.g., MIPI) by rejecting coupled switching noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator with current-limiting applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4836EUT28C | SOT23-6 package (3.0mm × 1.7mm); higher thermal resistance (727mW vs. 1951mW); same electrical specs. | Preferred for space-constrained layouts where board area is more critical than thermal performance. | Select when footprint size outweighs thermal requirements; verify PCB copper pour for 500mA continuous load. |
| MAX4834ETT28C | 250mA rated output; identical pinout, FLAG function, and 2.8V output; lower current limit (320–390mA). | Suitable for lower-power peripherals (e.g., Bluetooth modules) where 500mA headroom is unnecessary. | Choose for cost-sensitive designs with <250mA loads; avoids over-spec'ing current capability and associated BOM cost. |
Compared with MAX4836EUT28C, the MAX4836ETT28C offers superior thermal performance in high-power-density layouts; compared with MAX4834ETT28C, it doubles output current capacity while maintaining identical footprint and control interface-enabling seamless upgrade paths without PCB revision.
Availability
MAX4836ETT28C is available at Aetrix Electronics and suitable for USB port protection, SDIO power management, and notebook subsystem regulation requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX4836ETT28C 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for demanding industrial, communications, and consumer applications.
The MAX4836/MAX4837 family was designed specifically for portable and battery-powered systems needing robust, low-IQ LDOs with integrated fault signaling-targeting USB, SDIO, and cellular baseband power domains.
FAQ
What output voltage does the MAX4836ETT28C provide?
The MAX4836ETT28C provides a factory-trimmed fixed output voltage of 2.8V with ±2% accuracy across –40°C to +85°C and 1mA–500mA load range. This value is encoded in the part number suffix "28" per Maxim's naming convention and does not require external resistors or configuration.
Does the MAX4836ETT28C have a RESET or FLAG output?
The MAX4836ETT28C features an open-drain FLAG output (indicated by suffix "C"), not RESET. It asserts low when load current exceeds the 540–660mA limit for longer than the blanking time (5–17ms), then latches off the pass transistor until IN or SHDN is toggled.
What package type is used by the MAX4836ETT28C?
The MAX4836ETT28C uses a 6-pin TDFN package (3mm × 3mm × 0.8mm) with exposed thermal pad (EP), designated as T633-2 per Maxim's package drawings. The exposed pad must be soldered to a PCB GND plane for thermal and electrical performance.
How is soft-start configured on the MAX4836ETT28C?
Soft-start on the MAX4836ETT28C is controlled via the SS pin (Pin 5): connecting a capacitor (CSS) from SS to GND sets the output rise time. With no capacitor, tSS = 1ms minimum; 0.01µF yields ~10ms, and 0.1µF yields ~100ms. This prevents inrush current and false FLAG assertion.
What is the maximum continuous output current of the MAX4836ETT28C?
The MAX4836ETT28C guarantees 500mA continuous output current under specified conditions (VIN ≥ VOUT + 1V, TA ≤ +85°C, adequate PCB copper). Its current-limit threshold is 540–660mA, and thermal shutdown activates at +165°C junction temperature to protect against sustained overload.
MAX4836ETT28C 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):
- 0.33V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Current Limit, Enable, 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)
MAX4836ETT28C FAQ
1.How can I place an order for MAX4836ETT28C through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4836ETT28C 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 MAX4836ETT28C reliable?
The price and inventory of MAX4836ETT28C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4836ETT28C is usually 5 days.
3.What payment methods are accepted for MAX4836ETT28C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4836ETT28C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4836ETT28C?
MAX4836ETT28C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4836ETT28C 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 MAX4836ETT28C?
For technical support, including MAX4836ETT28C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4836ETT28C requirements.
6.How does Aetrix verify that MAX4836ETT28C is sourced from the original manufacturer or authorized distributors?
All MAX4836ETT28C 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 MAX4836ETT28C meets industry standards.
7.What is the process for return or replacement of MAX4836ETT28C?
All MAX4836ETT28C units undergo pre-shipment inspection (PSI). If there is an issue with MAX4836ETT28C, 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 MAX4836ETT28C part is unused and in its original packaging.
Return procedure for MAX4836ETT28C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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