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Analog Devices Inc./Maxim Integrated MAX1963EZT150+
- Part No.:
- MAX1963EZT150+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MAX1963EZT150+.pdf
- Description:
- IC REG LINEAR 300MA LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:6,518
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Product details
Overview
MAX1963EZT150+ from Maxim Integrated is a low-dropout linear regulator (LDO) with integrated active-low reset output, designed for battery-powered portable electronics. It delivers 300mA continuous output current with ±0.5% initial accuracy, 100mV dropout at full load, and operates from a 1.62V–3.6V input supply. Its preset 1.50V output voltage makes it suitable for powering core logic rails in notebook computers and cellular handsets.
For engineers reviewing the MAX1963EZT150+ datasheet, MAX1963EZT150+ pinout, MAX1963EZT150+ application, or MAX1963EZT150+ equivalent, key selection criteria include guaranteed 300mA load capability under low-input-voltage conditions (≥1.62V), tight output accuracy over temperature and load, integrated reset timing (2.2ms delay), thermal/short-circuit protection, and compatibility with ultra-low-ESR ceramic output capacitors.
Technical Context
The MAX1963EZT150+ employs an internal P-channel MOSFET pass transistor (RDS(ON) = 0.33Ω) to achieve low dropout and supply-current independence from load or dropout voltage. Its error amplifier compares a trimmed bandgap reference against a resistive feedback network to regulate the 1.50V output with ±0.5% initial tolerance.
It integrates a power-good comparator that monitors VOUT and asserts an open-drain RESET signal when output falls below 82.5% of nominal (1.2375V), holding reset asserted for ≥2.2ms after regulation is achieved. Shutdown is controlled via an active-low SHDN pin with <1µA off-state current and 90µs turn-on delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.50V fixed - internally trimmed, no external resistors required; enables compact single-rail power design. |
| Max Output Current | 300mA continuous - supports microprocessor I/O, memory, and baseband ICs in portable systems. |
| Dropout Voltage | 100mV at 300mA - allows operation down to 1.6V input, extending usable battery life in Li-ion/Li-poly systems. |
| Output Accuracy | ±0.5% at +25°C, ±2.5% over -40°C to +85°C - ensures stable core voltage for 1.5V logic families without margining overhead. |
| Reset Delay | 2.2ms (min) - meets typical µP power-on reset timing requirements for ARM Cortex-M and similar embedded processors. |
| Quiescent Current | 90µA typical at 300mA load - remains constant across load and dropout, optimizing standby efficiency. |
| PSRR | 70dB @ f < 1kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
Pinout & Package
MAX1963EZT150+ is housed in a RoHS-compliant, lead-free 6-pin thin SOT23 package (Z6-1 / Z6+1), measuring 2.9mm × 1.6mm × 1.1mm max height. The exposed pad is absent; thermal dissipation relies on GND pin soldering to PCB copper area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Supply | Accepts 1.62V–3.6V; requires ≥1µF ceramic bypass to GND close to pin for stability and transient response. |
| 2 (GND) | Ground Reference & Thermal Path | Primary ground return; must be connected to large PCB copper pour to manage thermal resistance and enable 300mA operation. |
| 3 (SHDN) | Active-Low Enable Control | Pull low to reduce supply current to <1µA; connect to IN or logic high for normal operation; 90µs turn-on delay. |
| 4 (RESET) | Open-Drain Reset Flag | Asserts low during power-up/brownout; releases after ≥2.2ms once VOUT ≥ 1.2375V; requires external pull-up. |
| 5 (I.C.) | Internally Connected | No external connection required; leave floating or tie to GND per layout best practice; not functional. |
| 6 (OUT) | Regulated Output | Delivers 1.50V at up to 300mA; requires ≥4.7µF low-ESR (≤30mΩ) ceramic capacitor to GND for stability and noise control. |
Key Features
| Feature | Design Value |
|---|---|
| Low Input Voltage Operation | 1.62V minimum VIN enables direct use with single-cell Li-ion (2.7–4.2V) or dual-cell NiMH (2.4–3.0V) batteries. |
| Load-Independent Quiescent Current | 90µA typical across 0–300mA load range - eliminates efficiency penalty at light loads common in sleep modes. |
| Integrated Thermal Protection | Shuts down at +165°C junction temperature with 15°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Short-Circuit Current Limit | 450mA minimum ILIM - limits fault current to protect PCB traces and upstream sources without latch-off behavior. |
| Logic-Controlled Shutdown | Sub-1µA shutdown current with fast 90µs wake-up - supports dynamic power gating in multi-rail PMIC architectures. |
Applications
| Smartphone Baseband Power | Notebook CPU I/O Rail |
|---|---|
|
Use Scenario: Powers baseband processor I/O banks requiring stable 1.5V supply during RF transmission bursts and deep-sleep states. IC Role / Device Role / Timing Role: Primary 1.5V LDO with integrated reset for power sequencing and brownout detection. Use Value: 100mV dropout extends battery runtime by enabling operation until cell voltage drops to ~1.6V; ±0.5% accuracy avoids I/O timing violations. |
Use Scenario: Supplies DDR memory termination voltage (VTT) or chipset I/O buffers in ultraportable notebooks. IC Role / Device Role / Timing Role: Low-noise, high-accuracy post-regulator delivering clean 1.5V from a higher intermediate rail. Use Value: 70dB PSRR suppresses ripple from main buck converter; 4.7µF ceramic output cap ensures <20mV load-transient overshoot. |
| Digital Camera Image Sensor Bias | PCMCIA Card Core Logic |
|
Use Scenario: Provides regulated 1.5V bias for CMOS image sensor analog front-end and ADC reference circuitry. IC Role / Device Role / Timing Role: Low-noise, low-dropout source for precision analog blocks sensitive to supply ripple. Use Value: 86µVRMS output noise (10Hz–100kHz) preserves SNR; thermal shutdown prevents overheating during extended capture sessions. |
Use Scenario: Powers PCMCIA card controller logic and interface transceivers in legacy industrial data acquisition modules. IC Role / Device Role / Timing Role: Standalone 1.5V regulator with reset assertion for hot-plug detection and safe initialization. Use Value: 2.2ms reset delay satisfies JEDEC PCMCIA power-up timing; SOT23 footprint minimizes board space in compact card-edge designs. |
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, 1.7V min VIN, no integrated RESET | Lacks reset functionality; requires external supervisor IC for power sequencing | Choose if system already includes discrete reset monitoring and lower cost is prioritized over integration. |
| MCP1703T-1502E/MB | 1.5V fixed, 250mA, 600mV dropout at 250mA, 2.7V min VIN, no RESET | Lower current rating and higher dropout limit usable battery range; no reset output | Choose only for non-battery applications with stable ≥2.7V input where 250mA suffices and reset is handled elsewhere. |
Compared with TPS73115DBVR and MCP1703T-1502E/MB, MAX1963EZT150+ uniquely combines 1.62V minimum input, 100mV dropout, ±0.5% accuracy, and integrated 2.2ms-reset in a 6-pin SOT23 - making it the only drop-in solution for space-constrained, battery-powered designs requiring guaranteed reset timing and extended discharge depth.
Availability
MAX1963EZT150+ is available at Aetrix Electronics and suitable for notebook computers, cellular telephones, and handheld computing devices requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MAX1963EZT150+ 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 solutions for industrial, communications, and consumer markets.
The MAX1963 series belongs to Maxim's low-input-voltage LDO family, engineered specifically for portable battery-powered equipment where minimal input voltage, tight regulation, and integrated supervisory functions are critical.
FAQ
What is the exact output voltage tolerance of the MAX1963EZT150+ over temperature?
The MAX1963EZT150+ has a guaranteed output voltage accuracy of ±0.5% at +25°C and ±2.5% over the full operating temperature range of –40°C to +85°C. This specification is confirmed in the Electrical Characteristics table under "Output Voltage Accuracy" with test conditions including 1mA–300mA load and VIN = (VOUT + 0.5V) to +3.6V. The ±2.5% includes combined effects of line, load, and temperature variation.
Does the MAX1963EZT150+ require external resistors to set its 1.50V output?
No, the MAX1963EZT150+ does not require external resistors. Its 1.50V output is internally trimmed and fixed - the "150" suffix explicitly denotes the 1.50V variant. The device uses an internal feedback divider network; no external components are needed to configure the output voltage, simplifying layout and reducing BOM count.
What is the maximum recommended output capacitance for stable operation of the MAX1963EZT150+?
The MAX1963EZT150+ is specified for stable operation with a minimum 4.7µF low-ESR ceramic capacitor (≤30mΩ) on the output. While larger values (e.g., up to 10µF) improve load-transient response and noise suppression, the datasheet does not specify an upper limit. Stability is maintained across the full 4.7µF–10µF range when using X5R/X7R ceramics with ESR ≤30mΩ.
Can the MAX1963EZT150+ operate with a 1.0V input supply?
No, the MAX1963EZT150+ cannot operate with a 1.0V input supply. Its absolute minimum input voltage is 1.62V, as stated in the Absolute Maximum Ratings and Electrical Characteristics tables. Below 1.62V, the device enters undervoltage lockout (VUVLO threshold = 1.30–1.60V), disabling regulation and asserting RESET. Attempting operation at 1.0V will result in no regulated output.
Is the I.C. pin on the MAX1963EZT150+ electrically functional or a dummy pad?
The I.C. pin (Pin 5) on the MAX1963EZT150+ is internally connected and non-functional for external circuitry. The datasheet Pin Description explicitly states "Internally Connected. Leave floating or connect to GND." It serves no signal or power role and may be left unconnected or tied to GND for mechanical stability - no electrical performance impact results from either choice.
MAX1963EZT150+ 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):
- -
- 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:
- TSOT-23-6
MAX1963EZT150+ FAQ
1.How can I place an order for MAX1963EZT150+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1963EZT150+ 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+ reliable?
The price and inventory of MAX1963EZT150+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1963EZT150+ is usually 5 days.
3.What payment methods are accepted for MAX1963EZT150+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1963EZT150+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1963EZT150+?
MAX1963EZT150+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1963EZT150+ 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+?
For technical support, including MAX1963EZT150+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1963EZT150+ requirements.
6.How does Aetrix verify that MAX1963EZT150+ is sourced from the original manufacturer or authorized distributors?
All MAX1963EZT150+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX1963EZT150+?
All MAX1963EZT150+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1963EZT150+, 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+ part is unused and in its original packaging.
Return procedure for MAX1963EZT150+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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