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Analog Devices Inc./Maxim Integrated MAX1976AETT130+T
- Part No.:
- MAX1976AETT130+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX1976AETT130+T.pdf
- Description:
- IC REG LINEAR 1.3V 300MA 6TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:80,000
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Product details
Overview
MAX1976AETT130+T from Maxim Integrated is a low-dropout linear regulator with preset 1.30V output, delivering guaranteed 300mA continuous current from a +1.62V to +3.6V input supply while maintaining only 100mV dropout at full load. It integrates an active-low open-drain RESET output with 70ms delay and ±0.5% output voltage accuracy over load, line, and temperature - designed for power management in space-constrained portable electronics.
For engineers reviewing the MAX1976AETT130+T datasheet, MAX1976AETT130+T pinout, MAX1976AETT130+T application, or MAX1976AETT130+T equivalent, key selection criteria include its 1.30V fixed output, 70ms RESET assertion time, TDFN-6 (3mm × 3mm) package, thermal-overload protection, and compatibility with low-ESR ceramic output capacitors.
Technical Context
The MAX1976AETT130+T employs an internal p-channel MOSFET pass transistor (RDS(ON) = 0.33Ω) enabling supply current independence from load and dropout voltage. Its error amplifier compares a precision bandgap reference against internal feedback to regulate output, while a dedicated power-good comparator monitors VOUT against 82.5% of nominal voltage to control the RESET flag.
Shutdown is logic-controlled via active-low SHDN, reducing quiescent current below 1µA and actively pulling OUT to GND through a 1.5kΩ resistor. Thermal shutdown activates at +165°C with 15°C hysteresis, providing pulsed output during sustained overload - distinct from the MAX1963A's 2.2ms RESET timing and different thermal response profile.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.30V - internally trimmed, no external resistors required |
| Max Output Current | 300mA continuous - supports high-current digital core rails in portable systems |
| Dropout Voltage | 100mV at 300mA - enables operation down to 1.40V input for extended battery life |
| Output Accuracy | ±0.5% at +25°C, ±2.5% over -40°C to +85°C - ensures stable logic-level compliance |
| RESET Delay | 70ms (min), 100ms (typ), 160ms (max) - provides reliable microprocessor power-on reset timing |
| Quiescent Current | 90µA typical at 300mA load - remains constant across dropout and load conditions |
| Input Voltage Range | +1.62V to +3.6V - compatible with single-cell Li-ion, Li-poly, and multi-cell alkaline sources |
Pinout & Package
MAX1976AETT130+T is housed in a RoHS-compliant 6-pin TDFN package (3mm × 3mm, <0.8mm height) with exposed paddle (EP) for thermal dissipation. Pin 1 is IN; Pin 2 is GND; Pin 3 is SHDN; Pin 4 is RESET; Pin 5 is I.C. (internally connected, leave unconnected or tie to GND); Pin 6 is OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator Input | Accepts 1.62V–3.6V supply; requires ≥1µF ceramic bypass to GND |
| 2 (GND) | Ground Reference & Heatsink | Primary ground return; solder EP pad to large copper area for thermal performance |
| 3 (SHDN) | Active-Low Shutdown Control | Pull low to reduce IQ <1µA; internal 1.5kΩ pull-down on OUT during shutdown |
| 4 (RESET) | Open-Drain Reset Flag | Asserts low until VOUT ≥1.30V × 82.5% = 1.0725V, then holds low for ≥70ms |
| 5 (I.C.) | Internally Connected | No functional connection; leave floating or connect to GND per layout best practice |
| 6 (OUT) | Regulated Output | Delivers 1.30V/300mA; requires 4.7µF low-ESR ceramic capacitor to GND |
Key Features
| Feature | Design Value |
|---|---|
| pMOS Pass Transistor | RDS(ON) = 0.33Ω enables 100mV dropout at 300mA and eliminates base-drive current loss |
| RESET Timing Precision | Guaranteed 70ms minimum assertion after regulation - meets µP reset timing requirements |
| Thermal Protection | +165°C shutdown with 15°C hysteresis - prevents permanent damage under sustained overload |
| Load-Independent Quiescent Current | 90µA typical across 0–300mA load and full dropout range - maximizes battery runtime |
| Stable with Low-ESR Capacitors | Supports 4.7µF ceramic output caps with ≤30mΩ ESR - simplifies layout and reduces BOM count |
Applications
| Notebook/Handheld Computers | Cellular/Smart/PDA Phones |
|---|---|
Use Scenario: Powering 1.3V I/O or memory interface rails in ultra-thin clamshell notebooks. IC Role / Device Role / Timing Role: Primary LDO supplying fixed 1.30V to DDR I/O buffers with precise RESET coordination. Use Value: 100mV dropout extends usable battery voltage range by ~120mV versus older LDOs, delaying system shutdown. | Use Scenario: Regulating 1.3V core voltage for application processors in dual-SIM smartphones. IC Role / Device Role / Timing Role: Secondary LDO delivering clean 1.30V under dynamic load transients, synchronized to µP reset sequence. Use Value: 70ms RESET delay ensures processor initialization completes before peripheral enable signals assert. |
| DSC, CD/MP3 Players | PCMCIA Cards |
Use Scenario: Supplying 1.3V audio codec and DSP subsystems in portable media players. IC Role / Device Role / Timing Role: Low-noise LDO with 86µVRMS output noise powering analog signal chain components. Use Value: PSRR >70dB below 1kHz suppresses switching noise from adjacent DC-DC converters. | Use Scenario: Providing 1.3V VCC to PCMCIA Type II card controllers during hot-insertion events. IC Role / Device Role / Timing Role: Fault-tolerant LDO with thermal shutdown and short-circuit protection for legacy expansion interfaces. Use Value: 450mA minimum current limit prevents latch-up during card insertion surge currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1963AETT130+T | Same pinout and 1.30V output, but 2.2ms RESET delay instead of 70ms | Suitable for fast-boot systems where shorter reset hold time is required | Select MAX1963AETT130+T only if 2.2ms reset timing aligns with host processor requirements |
| TPL7407LDR | 1.3V fixed output, 300mA, but no integrated RESET output or thermal shutdown | Lacks power-good monitoring and fault protection - requires external supervisor IC | Choose TPL7407LDR only when RESET functionality is handled elsewhere in the BOM |
Compared with MAX1963AETT130+T, the MAX1976AETT130+T provides longer reset assertion for robust boot sequencing, while TPL7407LDR trades integrated supervision for lower cost and smaller footprint - neither offers drop-in replacement without design review.
Availability
MAX1976AETT130+T is available at Aetrix Electronics and suitable for notebook computers, cellular phones, portable media players, and PCMCIA cards requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX1976AETT130+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 portable applications.
The MAX1976A belongs to Maxim's low-input-voltage LDO family, engineered specifically for battery-powered equipment where ultra-low dropout, tight output accuracy, and integrated power supervision are critical.
FAQ
What is the exact output voltage of MAX1976AETT130+T?
The MAX1976AETT130+T delivers a factory-trimmed fixed output voltage of 1.30V. This value is confirmed in the Selector Guide (suffix "130") and Electrical Characteristics table, with ±0.5% accuracy at +25°C and ±2.5% over the full -40°C to +85°C operating range. The "130" suffix explicitly denotes the 1.30V variant within the MAX1976A family.
Does MAX1976AETT130+T require external resistors to set its output voltage?
No, MAX1976AETT130+T does not require external resistors. Its 1.30V output is internally trimmed and fixed - verified by the "130" suffix in the part number and confirmed in the Selector Guide and Functional Diagram. External feedback resistors are unnecessary, simplifying PCB layout and reducing component count.
What is the RESET output behavior of MAX1976AETT130+T during power-up?
During power-up, the MAX1976AETT130+T asserts RESET low immediately and holds it low for at least 70ms after VOUT reaches regulation (≥1.0725V). RESET rises only after this delay expires and VOUT remains above threshold - ensuring reliable microprocessor reset timing. This differs from the MAX1963A's 2.2ms delay.
Can MAX1976AETT130+T operate from a single-cell Li-ion battery?
Yes, MAX1976AETT130+T supports input voltages from +1.62V to +3.6V, making it fully compatible with single-cell Li-ion (2.7V–4.2V) and Li-poly batteries. Its 100mV dropout at 300mA allows regulation down to 1.40V input - extending usable battery life beyond end-of-discharge thresholds of older LDOs.
What package type is used by MAX1976AETT130+T?
MAX1976AETT130+T uses a 6-pin TDFN package (3mm × 3mm, <0.8mm height) with exposed paddle (EP), designated as "T633+2" in Maxim's package documentation. This matches the "TT" in the part number and is distinct from the SOT23-6 ("EZ") and 8-pin TDFN ("TA") variants.
MAX1976AETT130+T 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):
- 1.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 140 µA
- Current - Supply (Max):
- 90 µA
- 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 (3x3)
MAX1976AETT130+T FAQ
1.How can I place an order for MAX1976AETT130+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1976AETT130+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 MAX1976AETT130+T reliable?
The price and inventory of MAX1976AETT130+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1976AETT130+T is usually 5 days.
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4.How is shipping managed for MAX1976AETT130+T?
MAX1976AETT130+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1976AETT130+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 MAX1976AETT130+T?
For technical support, including MAX1976AETT130+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1976AETT130+T requirements.
6.How does Aetrix verify that MAX1976AETT130+T is sourced from the original manufacturer or authorized distributors?
All MAX1976AETT130+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 MAX1976AETT130+T meets industry standards.
7.What is the process for return or replacement of MAX1976AETT130+T?
All MAX1976AETT130+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1976AETT130+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 MAX1976AETT130+T part is unused and in its original packaging.
Return procedure for MAX1976AETT130+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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