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Analog Devices Inc./Maxim Integrated MAX1976ETT150
- Part No.:
- MAX1976ETT150
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX1976ETT150.pdf
- Description:
- IC REG LINEAR 300MA LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:945
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Product details
Overview
MAX1976ETT150 from Maxim Integrated is a low-dropout linear regulator delivering 300mA continuous output current with ±0.5% output voltage accuracy at 1.50V, 100mV dropout at full load, and a 70ms active-low open-drain RESET flag assertion time. It operates from 1.62V to 3.6V input and is designed for power management in space-constrained portable electronics such as notebook computers and cellular handsets.
For engineers reviewing the MAX1976ETT150 datasheet, MAX1976ETT150 pinout, MAX1976ETT150 application, or MAX1976ETT150 equivalent, key selection criteria include guaranteed 300mA load capability under low-input-voltage conditions (≥1.62V), precise 1.50V output trimming, thermal/short-circuit protection, and compatibility with 4.7µF ceramic output capacitance for stable regulation in battery-powered systems.
Technical Context
The MAX1976ETT150 integrates a P-channel MOSFET pass transistor (RDS(ON) = 0.33Ω) enabling supply current independence from load and dropout voltage - critical for consistent quiescent performance across operating conditions. Its internal feedback divider sets a factory-trimmed 1.50V output, eliminating external resistor networks.
RESET functionality is implemented via a precision comparator monitoring VOUT against an 82.5% threshold with 1.7% hysteresis; the open-drain output remains asserted for ≥70ms after regulation is achieved and falls immediately upon undervoltage or shutdown. Thermal shutdown activates at +165°C with 15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.50V ±0.5% - factory-trimmed, no external resistors required |
| Max Output Current | 300mA continuous - supports core logic rails in portable SoC applications |
| Dropout Voltage | 100mV at 300mA - enables operation down to 1.62V input, extending battery life |
| Input Voltage Range | 1.62V to 3.6V - compatible with single-cell Li-ion, Li-poly, and multi-cell alkaline sources |
| RESET Delay | 70ms (min) - meets microprocessor power-on reset timing requirements per JEDEC JESD84 |
| Quiescent Current | 90µA typical at 300mA - maintains low standby power during active regulation |
| PSRR | 70dB @ <1kHz - suppresses noise from noisy DC-DC converters feeding the LDO input |
Pinout & Package
MAX1976ETT150 is housed in a 6-pin 3mm × 3mm thin DFN package (pkg code T633-2), 0.8mm max height, with exposed paddle (EP) connected to GND for thermal dissipation. The package is RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EP) | Exposed Pad | Thermal heatsink and GND connection - must be soldered to large PCB ground plane |
| 2 | OUT | Regulated 1.50V output - requires 4.7µF low-ESR ceramic capacitor to GND |
| 3 | SHDN | Active-low shutdown control - pulls OUT to GND and reduces IQ to <1µA when low |
| 4 | GND | Power and signal reference - connects internally to EP; primary return path |
| 5 | RESET | Open-drain active-low reset flag - asserts for ≥70ms after VOUT reaches regulation |
| 6 | IN | Input supply (1.62V–3.6V) - bypassed with ≥1µF ceramic capacitor to GND |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass element | Eliminates base-drive current loss - enables 90µA IQ at 300mA and in dropout |
| Factory-trimmed 1.50V output | ±0.5% accuracy over -40°C to +85°C - removes need for external feedback resistors |
| 70ms RESET assertion delay | Guaranteed minimum timing for reliable µP boot sequencing without external RC networks |
| Thermal shutdown with hysteresis | +165°C trip / +150°C recovery - prevents latch-up during sustained overload or poor heatsinking |
| Logic-controlled shutdown | Reduces total system standby current to <1µA - essential for long battery shelf life |
Applications
| Smartphone Application Processor Core Rail | Notebook Computer DDR Memory Termination |
|---|---|
Use Scenario: Powers ARM-based application processor cores requiring tightly regulated 1.50V at up to 300mA during burst-mode operation. IC Role / Device Role / Timing Role: Primary LDO supplying CPU VDD_IO rail with fast transient response and precise voltage tracking. Use Value: 100mV dropout extends usable battery voltage range; ±0.5% accuracy ensures compliance with JEDEC DDR4 VDDQ tolerance (±3%). |
Use Scenario: Provides termination voltage (VTT) for DDR3/DDR4 memory subsystems in ultrabooks and 2-in-1 laptops. IC Role / Device Role / Timing Role: Low-noise, high-accuracy sink/source LDO generating half-VDDQ (1.50V) for parallel termination. Use Value: 70ms RESET aligns with memory controller initialization sequence; PSRR >70dB suppresses switching noise from main PMIC. |
| Portable Medical Sensor Hub | Industrial Handheld Data Collector |
Use Scenario: Supplies analog front-end (AFE) and low-power MCU in battery-operated ECG or pulse oximeter modules. IC Role / Device Role / Timing Role: Single-component solution for clean 1.50V biasing of precision ADCs and op-amps. Use Value: 86µVRMS output noise and <100mV dropout preserve signal integrity and extend runtime on coin-cell or Li-SOCl₂ batteries. |
Use Scenario: Powers barcode scanner engine, RF transceiver, and Cortex-M4 MCU in ruggedized handheld terminals. IC Role / Device Role / Timing Role: Main system LDO with integrated RESET for deterministic boot after cold start or brownout. Use Value: Thermal protection (+165°C) and short-circuit immunity ensure reliability in unventilated enclosures; 1.62V min VIN supports wide-range industrial battery packs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B152MR-G | 1.50V fixed output, 300mA, 150mV dropout, no RESET output | Lacks integrated power-good signaling - requires external supervisor IC for reset timing | Select when RESET is not required and board space permits discrete supervision |
| Analog Devices ADP125ARHZ-1.5-R7 | 1.50V fixed output, 500mA, 135mV dropout, no RESET, higher IQ (120µA) | Higher current rating but no built-in reset - unsuitable for µP boot sequencing without added components | Choose for higher load margin where reset functionality is handled elsewhere in the BOM |
Compared with MAX1976ETT150, the XC6219B152MR-G saves cost but adds design complexity for reset generation, while the ADP125ARHZ-1.5-R7 offers headroom for future load increases but sacrifices integration and power efficiency in always-on subsystems.
Availability
MAX1976ETT150 is available at Aetrix Electronics and suitable for notebook computers, cellular telephones, and portable medical devices requiring stable component supply with guaranteed 1.50V output accuracy and integrated reset timing.
Supply support for MAX1976ETT150 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 high-performance analog and mixed-signal ICs for power management, sensing, and interface applications in demanding environments.
The MAX1976ETT150 belongs to Maxim's low-input-voltage LDO family, engineered specifically for battery-powered portable equipment where minimal dropout, tight output tolerance, and integrated supervisory functions reduce system-level component count.
FAQ
What is the output voltage tolerance of the MAX1976ETT150 over temperature and load?
The MAX1976ETT150 guarantees ±0.5% output voltage accuracy over -40°C to +85°C, full load (1mA to 300mA), and line (VIN = VOUT + 0.5V to 3.6V). This specification is verified by design and 100% production tested at +25°C, ensuring robust performance in portable electronics across environmental extremes.
Does the MAX1976ETT150 require external capacitors, and what values are recommended?
Yes - the MAX1976ETT150 requires a 1µF ceramic capacitor between IN and GND, and a 4.7µF low-ESR ceramic capacitor between OUT and GND. These values ensure stability, optimal transient response, and PSRR performance across the full operating temperature range and 300mA load. Larger output capacitance improves noise suppression but does not affect regulation accuracy.
How does the RESET function behave during power-up and brownout events for the MAX1976ETT150?
The MAX1976ETT150 asserts its open-drain RESET output low during power-up until VOUT reaches ≥82.5% of 1.50V and remains asserted for ≥70ms thereafter. During brownout, RESET falls immediately if VOUT drops below that threshold or if SHDN is pulled low - providing deterministic microprocessor reset signaling without external circuitry.
Can the MAX1976ETT150 operate from a single-cell Li-ion battery throughout its discharge curve?
Yes - the MAX1976ETT150 supports input voltages from 1.62V to 3.6V and delivers 300mA with only 100mV dropout. This allows it to regulate 1.50V continuously from a Li-ion cell discharging from 4.2V down to ~1.62V, covering >95% of the usable battery capacity and maximizing runtime in space-constrained portable designs.
What thermal considerations apply to the MAX1976ETT150 in the 3mm × 3mm TDFN package?
The MAX1976ETT150 in the TDFN package (T633-2) has a maximum power dissipation of 1951mW at +70°C ambient, with thermal shutdown activating at +165°C junction temperature. To maintain reliability, the exposed paddle (Pin 1/EP) must be soldered to a large PCB ground plane; insufficient copper area will cause premature thermal limiting under sustained 300mA loads.
MAX1976ETT150 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 3.6V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 140 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (1kHz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN-EP (3x3)
MAX1976ETT150 FAQ
1.How can I place an order for MAX1976ETT150 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1976ETT150 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 MAX1976ETT150 reliable?
The price and inventory of MAX1976ETT150 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1976ETT150 is usually 5 days.
3.What payment methods are accepted for MAX1976ETT150?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1976ETT150 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1976ETT150?
MAX1976ETT150 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1976ETT150 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 MAX1976ETT150?
For technical support, including MAX1976ETT150 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1976ETT150 requirements.
6.How does Aetrix verify that MAX1976ETT150 is sourced from the original manufacturer or authorized distributors?
All MAX1976ETT150 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 MAX1976ETT150 meets industry standards.
7.What is the process for return or replacement of MAX1976ETT150?
All MAX1976ETT150 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1976ETT150, 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 MAX1976ETT150 part is unused and in its original packaging.
Return procedure for MAX1976ETT150:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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