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Analog Devices Inc./Maxim Integrated MAX1976AETA150+
- Part No.:
- MAX1976AETA150+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX1976AETA150+.pdf
- Description:
- FIXED POSITIVE LDO REGULATOR, 1.
- Quantity:
- Payment:
- Shipping:
Inventory:99,958
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Product details
Overview
MAX1976AETA150+ from Maxim Integrated is a low-dropout linear regulator with preset 1.5V output, delivering guaranteed 300mA continuous current at ≤100mV dropout (at 300mA), ±0.5% output voltage accuracy, and active-low open-drain RESET with 70ms delay. It operates from 1.62V–3.6V input and targets power rails in portable battery-powered systems such as handheld computers and smart phones.
For engineers reviewing the MAX1976AETA150+ datasheet, MAX1976AETA150+ pinout, MAX1976AETA150+ application, or MAX1976AETA150+ equivalent, key selection criteria include its 1.5V fixed output, 70ms RESET assertion time, SOT23-6 package footprint, thermal-overload protection, and compatibility with low-ESR ceramic output capacitors (4.7µF).
Technical Context
The MAX1976AETA150+ uses an internal p-channel MOSFET pass transistor (RDS(ON) = 0.33Ω) enabling load-independent quiescent current (90µA typ) and stable dropout behavior. Its error amplifier compares a precision bandgap reference against a resistive feedback network to regulate output voltage.
RESET functionality is implemented via a dedicated comparator monitoring VOUT; it asserts low when VOUT falls below 82.5% of nominal (±2.5% threshold accuracy) and remains asserted for ≥70ms after regulation is achieved. Shutdown is logic-controlled via active-low SHDN pin, reducing supply current to <1µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V - eliminates external resistor divider, reduces BOM count and layout area |
| Max Output Current | 300mA continuous - supports moderate-power digital ICs (e.g., baseband processors, memory I/O) |
| Dropout Voltage | 100mV at 300mA - enables operation down to 1.6V input, extending battery life in single-cell Li-ion/Li-poly systems |
| Output Accuracy | ±0.5% at +25°C - ensures tight voltage margining for 1.5V core/logic rails without derating |
| RESET Delay | 70ms (min) - meets microprocessor power-on reset timing requirements for reliable boot sequencing |
| Quiescent Current | 90µA typical at full load - maintains efficiency during light-load standby without sacrificing transient response |
| Input Voltage Range | 1.62V to 3.6V - compatible with discharged single-cell batteries and regulated intermediate supplies |
Pinout & Package
MAX1976AETA150+ is housed in a RoHS-compliant 6-pin thin SOT23-6 package (1.6mm × 2.9mm × 1.1mm), optimized for space-constrained portable designs. Thermal performance is enhanced by direct GND connection to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input | Accepts 1.62V–3.6V supply; requires ≥1µF ceramic bypass to GND for stability |
| 2 (GND) | Ground reference & thermal path | Serves as primary return and heatsink; must be soldered to large copper area |
| 3 (SHDN) | Active-low shutdown control | Pulling low disables regulator, disconnects OUT from IN, and forces RESET low |
| 4 (RESET) | Open-drain reset flag | Asserts low during power-up/brownout; rises ≥70ms after VOUT reaches regulation |
| 5 (I.C.) | Internally connected | No functional connection; leave unconnected or tie to GND per layout best practice |
| 6 (OUT) | Regulated output | Delivers 1.5V/300mA; requires 4.7µF low-ESR ceramic capacitor to GND for transient stability |
Key Features
| Feature | Design Value |
|---|---|
| p-Channel MOSFET pass element | Eliminates base-drive current, enabling constant 90µA quiescent current across load and dropout conditions |
| Thermal-overload protection | Shuts down at +165°C junction temperature with 15°C hysteresis, preventing permanent damage during sustained overload |
| Current limit | Guaranteed 450mA minimum foldback limit protects against short-circuit faults without external components |
| Low-ESR capacitor support | Stable with 4.7µF ceramic output caps having ≤30mΩ ESR - avoids tantalum or electrolytic dependencies |
| Logic-compatible shutdown | SHDN accepts 0.6V/1.4V logic thresholds over full input range, interoperable with 1.8V/3.3V GPIOs |
Applications
| Notebook/Handheld Computers | Cellular/Smart Phones |
|---|---|
Use Scenario: Powering 1.5V DDR I/O or USB PHY interface in ultra-thin clamshell notebooks. IC Role / Device Role / Timing Role: Primary LDO supplying noise-sensitive high-speed interface rail with fast load-transient response. Use Value: 20mV load-step overshoot (20mA→200mA) and 70ms RESET ensure deterministic boot and signal integrity. | Use Scenario: Regulating 1.5V core voltage for application processor I/O domain in LTE smartphones. IC Role / Device Role / Timing Role: Secondary LDO following buck converter, providing clean, low-noise bias for mixed-signal peripherals. Use Value: 86µVRMS output noise and 70dB PSRR @ 1kHz suppress switching noise coupling into RF sections. |
| DSC / CD/MP3 Players | PCMCIA Cards |
Use Scenario: Supplying 1.5V audio codec and flash memory interface in portable media players. IC Role / Device Role / Timing Role: Low-quiescent LDO maintaining battery runtime during playback while supporting rapid wake-from-sleep transitions. Use Value: 90µA IQ at full load and 100µs turn-on delay enable sub-second resume without brownout resets. | Use Scenario: Generating 1.5V VCC for PCMCIA Type II card controllers in industrial data acquisition modules. IC Role / Device Role / Timing Role: Standalone regulator with integrated RESET for hot-plug detection and safe enumeration sequence. Use Value: Active-low open-drain RESET provides direct interface to host controller's nRESET input, eliminating external pull-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1963AETA150+ | Same pinout and electrical specs, but 2.2ms RESET delay instead of 70ms | Targeted at faster-boot systems where shorter reset hold time is required | Select MAX1963AETA150+ only if system boot timing mandates sub-10ms reset assertion |
| Torex XC6219B152MR-G | 1.5V fixed output, 300mA, 150mV dropout, no integrated RESET output | Lacks RESET functionality; requires external supervisor IC for power sequencing | Choose only when RESET is handled separately and lower cost is prioritized over integration |
Compared with MAX1963AETA150+, the MAX1976AETA150+ provides longer RESET hold time critical for complex SoC initialization; versus XC6219B152MR-G, it delivers full power-supervision integration in the same SOT23-6 footprint, reducing component count and board area.
Availability
MAX1976AETA150+ is available at Aetrix Electronics and suitable for notebook computers, cellular handsets, portable media players, and PCMCIA cards requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX1976AETA150+ 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 portable applications.
The MAX1963A/MAX1976A product line delivers low-input-voltage, high-accuracy LDOs with integrated RESET for battery-powered equipment where compact size, low dropout, and reliable power sequencing are essential.
FAQ
What is the exact output voltage of the MAX1976AETA150+?
The MAX1976AETA150+ has a factory-trimmed fixed output voltage of 1.50V, with guaranteed accuracy of ±0.5% over load, line, and temperature (–40°C to +85°C). This value is confirmed in the Selector Guide and Electrical Characteristics table, where "150" in the part number suffix denotes the 1.5V option.
Does the MAX1976AETA150+ require external components for stable operation?
Yes, the MAX1976AETA150+ requires two external capacitors: a minimum 1µF ceramic capacitor between IN and GND, and a 4.7µF low-ESR (≤30mΩ) ceramic capacitor between OUT and GND. These are mandatory for stability, transient response, and noise suppression across –40°C to +85°C, as specified in the Applications Information section.
What is the function of the I.C. pin on the MAX1976AETA150+?
The I.C. pin (Pin 5) on the MAX1976AETA150+ is internally connected and serves no external circuit function. The datasheet explicitly states it should be left unconnected or tied to GND - it is not a test point, bias node, or feedback terminal, and connecting it elsewhere may compromise reliability.
How does the RESET output behave during shutdown of the MAX1976AETA150+?
When SHDN is pulled low, the MAX1976AETA150+ enters shutdown mode and actively pulls the RESET pin low. This behavior is documented in the Detailed Description: "During shutdown… RESET is actively pulled low." It ensures downstream logic remains held in reset during power-down, supporting safe state retention.
Is the MAX1976AETA150+ compatible with lead-free reflow processes?
Yes, the MAX1976AETA150+ carries a "+" suffix indicating RoHS-compliant, lead-free packaging. Its maximum reflow soldering temperature is +260°C (per Absolute Maximum Ratings), fully compliant with standard lead-free reflow profiles including JEDEC J-STD-020.
MAX1976AETA150+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- Current Limit, Enable, Reset
- Protection Features:
- Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
MAX1976AETA150+ FAQ
1.How can I place an order for MAX1976AETA150+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1976AETA150+ 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 MAX1976AETA150+ reliable?
The price and inventory of MAX1976AETA150+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1976AETA150+ is usually 5 days.
3.What payment methods are accepted for MAX1976AETA150+?
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4.How is shipping managed for MAX1976AETA150+?
MAX1976AETA150+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1976AETA150+ 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 MAX1976AETA150+?
For technical support, including MAX1976AETA150+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1976AETA150+ requirements.
6.How does Aetrix verify that MAX1976AETA150+ is sourced from the original manufacturer or authorized distributors?
All MAX1976AETA150+ 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 MAX1976AETA150+ meets industry standards.
7.What is the process for return or replacement of MAX1976AETA150+?
All MAX1976AETA150+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1976AETA150+, 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 MAX1976AETA150+ part is unused and in its original packaging.
Return procedure for MAX1976AETA150+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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