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Analog Devices Inc./Maxim Integrated MAX1963EZT150+T
- Part No.:
- MAX1963EZT150+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MAX1963EZT150+T.pdf
- Description:
- IC REG LINEAR 300MA LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
The MAX1963EZT150+T from Maxim Integrated is a low-dropout linear regulator delivering 300mA continuous output current with ±0.5% output voltage accuracy at 1.5V, 100mV dropout at full load, and active-low open-drain RESET assertion for ≥2.2ms after regulation-designed for power management in space-constrained portable electronics such as notebook computers and cellular handsets.
For engineers reviewing the MAX1963EZT150+T datasheet, MAX1963EZT150+T pinout, MAX1963EZT150+T application, or MAX1963EZT150+T equivalent, this page provides verified technical context, package-specific pin mapping, real-world application constraints, and validated alternative options for LDO selection in battery-powered systems operating down to +1.62V input.
Technical Context
The MAX1963EZT150+T uses an internal P-channel MOSFET pass transistor (RDS(ON) = 0.33Ω) enabling supply current independence from load and dropout voltage-critical for stable operation across battery discharge curves. Its error amplifier compares a trimmed bandgap reference against feedback from a fixed internal divider to maintain 1.5V output.
RESET functionality is implemented via a dedicated comparator monitoring VOUT, asserting low when output falls below 82.5% of nominal (1.2375V), with hysteresis and guaranteed 2.2ms delay after regulation-supporting reliable microprocessor power-up sequencing without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±0.5% over load/line/temp-enables direct powering of core logic rails without external resistors. |
| Max Output Current | 300mA continuous-supports moderate-power digital ICs like baseband processors or memory interfaces. |
| Dropout Voltage | 100mV at 300mA-allows operation down to 1.6V input, extending usable life of single-cell Li-ion batteries. |
| Input Voltage Range | +1.62V to +3.6V-compatible with partially discharged Li-ion, Li-polymer, and regulated 1.8V/2.5V/3.3V system rails. |
| Ground Current | 90µA typical at 300mA-minimizes quiescent loss during active operation, preserving battery runtime. |
| RESET Delay | 2.2ms minimum after VOUT reaches regulation-meets standard µP reset timing requirements for clean boot sequences. |
| PSRR | 70dB @ <1kHz-suppresses ripple from noisy switching supplies feeding the LDO input. |
Pinout & Package
MAX1963EZT150+T is packaged in a 6-pin thin SOT23-6 (Z6-1 package code), height <1.1mm, footprint 2.9mm × 1.6mm-optimized for high-density portable PCB layouts.
| 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 | Primary ground return and heatsink; must connect to large copper pour for thermal dissipation. |
| 3 (SHDN) | Active-Low Shutdown Control | Logic-low (<0.6V) disables regulator, reducing IQ to <1µA; pulled high internally if left open. |
| 4 (RESET) | Open-Drain Reset Flag | Asserts low during power-up/brownout; rises 2.2ms after VOUT stabilizes at 1.5V; requires external pull-up. |
| 5 (I.C.) | Internally Connected | No external connection required; leave floating 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 response and stability. |
Key Features
| Feature | Design Value |
|---|---|
| Low-input-voltage operation | Starts regulation at 1.62V input-enables use with deeply discharged single-cell batteries. |
| P-channel MOSFET pass element | RDS(ON) = 0.33Ω eliminates base-drive current, maintaining 90µA IQ even at 300mA load and in dropout. |
| Integrated RESET with precision threshold | 82.5% VOUT detection (±2.5%) ensures deterministic reset timing without external comparators. |
| Thermal-overload protection | Shuts down at +165°C junction temperature with 15°C hysteresis-prevents damage during sustained overload or poor heatsinking. |
| Short-circuit protection | Limits output current to ≥450mA min-protects both regulator and downstream circuitry during fault conditions. |
Applications
| Notebook Computers | Cellular Telephones |
|---|---|
Use Scenario: Powering 1.5V DDR memory I/O or GPU core rail in ultraportable notebooks with tight board area and thermal constraints. IC Role / Device Role / Timing Role: Primary low-noise, low-dropout voltage source with integrated power-good signaling for system-level reset coordination. Use Value: Enables extended battery runtime via 1.62V start-up and maintains stable 1.5V under dynamic load transients up to 200mA step change. | Use Scenario: Supplying 1.5V analog front-end (AFE) or RF transceiver bias in GSM/UMTS handsets where input voltage varies from 3.4V (fresh) to 2.8V (discharged). IC Role / Device Role / Timing Role: Regulator with built-in RESET flag to synchronize modem boot sequence with stable 1.5V rail establishment. Use Value: 2.2ms RESET delay guarantees µP initialization only after VOUT settles within ±0.5%, preventing firmware lockup. |
| Personal Digital Assistants (PDAs) | Digital Cameras |
Use Scenario: Delivering 1.5V to ARM9 application processor core in legacy PDAs using Li-ion battery packs with minimal PCB real estate. IC Role / Device Role / Timing Role: High-accuracy LDO with shutdown control for dynamic power gating of non-critical subsystems during sleep mode. Use Value: 1µA shutdown current extends standby time; 100mV dropout preserves usable battery capacity down to 1.6V. | Use Scenario: Providing 1.5V to image sensor interface logic and ISP core in compact digital cameras with burst-mode current demands. IC Role / Device Role / Timing Role: Low-noise regulator with 70dB PSRR suppressing switching noise from adjacent DC-DC converters. Use Value: 86µVRMS output noise prevents corruption of analog pixel data during high-gain image capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS73115DBVR | 1.5V fixed, 300mA, 150mV dropout at 300mA, no RESET output | Lacks integrated RESET-requires external supervisor IC for power-on sequencing | Choose when RESET is handled separately and lower cost is prioritized over integration. |
| MCP1826-1502E/DB | 1.5V fixed, 300mA, 250mV dropout at 300mA, active-high RESET | RESET polarity mismatch and higher dropout reduce battery efficiency and complicate timing alignment | Use only if board redesign accommodates active-high logic and accepts ~150mV higher dropout penalty. |
Compared with TPS73115DBVR and MCP1826-1502E/DB, the MAX1963EZT150+T uniquely combines 100mV dropout, ±0.5% accuracy, and guaranteed 2.2ms active-low RESET in a 2.9mm × 1.6mm SOT23 package-making it optimal for space- and battery-life-constrained designs requiring self-contained power sequencing.
Availability
MAX1963EZT150+T is available at Aetrix Electronics and suitable for notebook computers, cellular telephones, and personal digital assistants requiring stable component supply with RoHS-compliant, lead-free packaging and tape-and-reel delivery.
Supply support for MAX1963EZT150+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX1963 series belongs to Maxim's ultra-low-input-voltage LDO family, engineered specifically for battery-powered portable devices needing high accuracy, low dropout, and integrated power supervision in minimal footprint packages.
FAQ
What is the output voltage tolerance of the MAX1963EZT150+T over temperature and load?
The MAX1963EZT150+T guarantees ±0.5% output voltage accuracy across -40°C to +85°C, 1mA to 300mA load, and input voltage from (VOUT + 0.5V) to +3.6V. This specification is production-tested at +25°C and ensured by design over the full operating range-critical for powering voltage-sensitive logic cores without margin loss.
Does the MAX1963EZT150+T require external capacitors, and what values are recommended?
Yes, the MAX1963EZT150+T 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 across temperature and load, suppress noise, and optimize transient response-using ESR ≤30mΩ on the output capacitor is mandatory for guaranteed stability per the datasheet.
How does the RESET function behave during input undervoltage or shutdown?
During input undervoltage (VIN < 1.3V), the MAX1963EZT150+T asserts RESET low. When SHDN is pulled low, RESET is actively driven low immediately. RESET remains asserted until VOUT rises above 82.5% of 1.5V (1.2375V) and stays high for ≥2.2ms-ensuring robust power-on reset for microprocessors regardless of input ramp rate.
What is the thermal performance limitation of the MAX1963EZT150+T in the SOT23 package?
In the 6-pin thin SOT23 package, the MAX1963EZT150+T has a maximum power dissipation of 727mW at +70°C ambient, derating 9.1mW/°C above that. At +85°C ambient, max continuous output current drops to ~220mA when VIN = 3.6V and VOUT = 1.5V-designers must verify thermal margins using actual board copper area and airflow conditions.
Is the MAX1963EZT150+T pin-compatible with other members of the MAX1963/MAX1976 family?
Yes, all MAX1963 and MAX1976 variants in the same package (e.g., SOT23-6) share identical pinouts and footprints-including MAX1963EZT150+T, MAX1963EZT180+T, and MAX1976EZT150+T. However, RESET delay differs (2.2ms vs. 70ms), so functional substitution requires verification of system timing requirements.
MAX1963EZT150+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- 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):
- 0.2V @ 300mA
- 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
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
MAX1963EZT150+T FAQ
1.How can I place an order for MAX1963EZT150+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1963EZT150+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 MAX1963EZT150+T reliable?
The price and inventory of MAX1963EZT150+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1963EZT150+T is usually 5 days.
3.What payment methods are accepted for MAX1963EZT150+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1963EZT150+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1963EZT150+T?
MAX1963EZT150+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1963EZT150+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 MAX1963EZT150+T?
For technical support, including MAX1963EZT150+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1963EZT150+T requirements.
6.How does Aetrix verify that MAX1963EZT150+T is sourced from the original manufacturer or authorized distributors?
All MAX1963EZT150+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 MAX1963EZT150+T meets industry standards.
7.What is the process for return or replacement of MAX1963EZT150+T?
All MAX1963EZT150+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1963EZT150+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 MAX1963EZT150+T part is unused and in its original packaging.
Return procedure for MAX1963EZT150+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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