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Analog Devices Inc./Maxim Integrated MAX1963EZT075
- Part No.:
- MAX1963EZT075
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MAX1963EZT075.pdf
- Description:
- IC REG LINEAR 300MA LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:1,186
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Product details
Overview
MAX1963EZT075 from Maxim Integrated is a low-dropout linear regulator with fixed 0.75V output, delivering up to 300mA continuous current from a 1.62V–3.6V input supply, featuring 100mV dropout at full load and ±0.5% output voltage accuracy over temperature, line, and load - used in power rails for baseband processors and memory in ultra-low-voltage portable systems.
For engineers reviewing the MAX1963EZT075 datasheet, MAX1963EZT075 pinout, MAX1963EZT075 application, or MAX1963EZT075 equivalent, key selection criteria include guaranteed 300mA output under 1.62V minimum input, active-low open-drain RESET with 2.2ms delay, logic-controlled shutdown consuming <1µA, thermal/short-circuit protection, and compatibility with 1µF input / 4.7µF output ceramic capacitors.
Technical Context
The MAX1963EZT075 uses an internal P-channel MOSFET pass transistor (RDS(ON) = 0.33Ω) enabling supply current independence from load and dropout voltage - critical for battery life in deep-discharge operation. Its error amplifier compares a trimmed bandgap reference against feedback from an internal voltage divider to regulate output.
RESET functionality is implemented via a dedicated comparator monitoring VOUT, asserting active-low when output falls below 82.5% of nominal (±1.7% hysteresis), with guaranteed 2.2ms delay after regulation is achieved - meeting microprocessor power-good timing requirements in handheld devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 0.75V - optimized for core voltage supply of low-power DSPs, ARM cores, and LPDDR I/O interfaces. |
| Max Output Current | 300mA continuous - supports single-core application processors or multi-rail PMIC secondary outputs. |
| Dropout Voltage | 100mV at 300mA - enables operation down to 0.85V input, extending usable battery range in Li-ion/Li-poly systems. |
| Output Accuracy | ±0.5% at +25°C, ±2.5% over -40°C to +85°C - ensures stable logic-level compliance for sub-1V digital circuits. |
| Quiescent Current | 90µA typical at 300mA load - remains constant across dropout, minimizing no-load battery drain in always-on subsystems. |
| RESET Delay | 2.2ms (min), 3.2ms (typ), 5.5ms (max) - satisfies JEDEC JESD84-B41 tRST timing for NAND flash boot sequencing. |
| Shutdown Current | 0.001µA at +25°C - reduces system standby power to nanowatt levels during sleep modes. |
Pinout & Package
MAX1963EZT075 is packaged in a 6-pin thin SOT23 (Z6-1), 2.9mm × 2.8mm × 1.1mm profile, with exposed pad not present - optimized for space-constrained PCB layouts in mobile modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Supply | Accepts 1.62V–3.6V; requires ≥1µF ceramic bypass to GND for stability and noise suppression. |
| 2 (GND) | Power Ground | Primary return path; soldered to PCB ground plane to manage thermal dissipation (θJA ≈ 220°C/W). |
| 3 (SHDN) | Active-Low Enable | Pull low to disable regulator; internal 1.5kΩ pull-down ensures safe default-off state during power-up. |
| 4 (RESET) | Open-Drain Reset Flag | Asserts low until VOUT reaches 82.5% of 0.75V and holds for ≥2.2ms - directly interfaces µP reset inputs without external pull-up. |
| 5 (I.C.) | Internally Connected | No external connection required; leave floating or tie to GND - unused internal node with no functional impact. |
| 6 (OUT) | Regulated Output | Delivers 0.75V @ ≤300mA; requires 4.7µF low-ESR ceramic capacitor to GND for transient response and PSRR optimization. |
Key Features
| Feature | Design Value |
|---|---|
| Low Input Voltage Support | Operates from 1.62V - enables direct regulation from single-cell Li-ion (2.5V–4.2V) or LiFePO4 (2.0V–3.6V) batteries without pre-regulation. |
| P-Channel Pass Transistor | 0.33Ω RDS(ON) - eliminates base-drive current loss, maintaining 90µA quiescent current even at full load and in dropout. |
| Integrated RESET Comparator | 82.5% VOUT threshold with 1.7% hysteresis - provides reliable brownout detection without external components. |
| Thermal Protection | +165°C shutdown with 15°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Capacitor-Optimized Stability | Stable with 1µF input / 4.7µF output ceramic caps - avoids tantalum or electrolytic dependencies, reducing BOM cost and footprint. |
Applications
| Baseband Processor Core Supply | LPDDR Memory I/O Rail |
|---|---|
|
Use Scenario: Powers ARM9/ARM11 application processor cores requiring tightly regulated 0.75V at up to 250mA during burst-mode execution. IC Role / Device Role / Timing Role: Primary LDO providing clean, low-noise core voltage with fast load-transient response (<20mV deviation for 20mA→200mA step). Use Value: Enables extended battery runtime by sustaining regulation down to 0.85V input and minimizing quiescent loss during idle cycles. |
Use Scenario: Supplies I/O interface voltage for LPDDR2/LPDDR3 memory in smartphones and tablets operating at 0.75V signaling level. IC Role / Device Role / Timing Role: Secondary rail regulator synchronized with memory controller enable signals via SHDN pin. Use Value: Guarantees valid RESET assertion before memory initialization, preventing boot failures due to premature clock or command issuance. |
| WLAN/BT SoC Analog Subsystem | Ultra-Low-Power Sensor Hub |
|
Use Scenario: Delivers 0.75V bias to RF transceiver analog blocks (LNA, mixer, PLL VCO) in combo WLAN/BT chips. IC Role / Device Role / Timing Role: Low-noise local regulator decoupling sensitive RF circuitry from noisy digital domains. Use Value: Achieves 86µVRMS output noise and 70dB PSRR at 1kHz - preserves EVM and receiver sensitivity in 2.4GHz/5GHz bands. |
Use Scenario: Powers always-on motion sensor fusion engine (accelerometer + gyroscope + MCU) in wearable health monitors. IC Role / Device Role / Timing Role: Always-active LDO with <1µA shutdown current, enabling wake-on-motion while preserving battery for >7 days. Use Value: Maintains ±0.5% output accuracy across -40°C to +85°C - ensures consistent ADC reference and sensor biasing in variable environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B075MR-G | 0.75V fixed output, 300mA, 150mV dropout at 300mA, ±2% accuracy, no RESET output | Lacks integrated RESET - requires external supervisor IC for power-good sequencing | Choose when RESET is handled elsewhere and lower cost is prioritized over integration. |
| Analog Devices ADP125ARHZ-0.75-R7 | 0.75V fixed output, 500mA, 135mV dropout at 500mA, ±1% accuracy, no RESET, 10µA quiescent current | Higher current capability but larger 8-lead MSOP package and no RESET flag | Prefer for higher-current loads where board area allows and RESET is not required. |
Compared with MAX1963EZT075, the XC6219B075MR-G saves cost but adds design complexity via external RESET supervision, while the ADP125ARHZ-0.75-R7 offers headroom for future current scaling yet sacrifices the compact SOT23 footprint and integrated timing-critical RESET function essential for space- and timing-constrained portable designs.
Availability
MAX1963EZT075 is available at Aetrix Electronics and suitable for notebook computers, cellular telephones, and personal digital assistants requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for MAX1963EZT075 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 U.S.-based 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, designed specifically for battery-powered portable electronics demanding sub-1V regulation, minimal quiescent current, and integrated power-supply monitoring functions.
FAQ
What is the exact output voltage tolerance of the MAX1963EZT075 over temperature and load?
The MAX1963EZT075 guarantees ±0.5% output voltage accuracy at +25°C and ±2.5% over the full -40°C to +85°C operating range, with load current from 1mA to 300mA and input voltage from (VOUT + 0.5V) to +3.6V. This specification is production-tested and applies directly to the MAX1963EZT075, not the broader MAX1963 family.
Does the MAX1963EZT075 require external components for stable operation?
Yes - the MAX1963EZT075 requires a minimum 1µF ceramic capacitor between IN and GND, and a 4.7µF low-ESR ceramic capacitor between OUT and GND. These are mandatory for stability, transient response, and PSRR performance per the MAX1963EZT075 datasheet; omitting them risks oscillation or excessive output ripple.
How does the RESET output of the MAX1963EZT075 behave during power-up and brownout?
The MAX1963EZT075 RESET output is an active-low open-drain signal that remains asserted (low) until VOUT reaches 82.5% of 0.75V and stays asserted for ≥2.2ms thereafter. It falls immediately if VOUT drops below that threshold or if SHDN is pulled low - ensuring deterministic microprocessor reset behavior in both power-up and brownout conditions.
Can the MAX1963EZT075 operate from a single-cell Li-ion battery throughout its discharge curve?
Yes - the MAX1963EZT075 operates from 1.62V to 3.6V input and maintains regulation down to 0.85V input (0.75V + 100mV dropout) at 300mA, covering the usable 2.8V–4.2V range of a single Li-ion cell. Its 90µA quiescent current further extends runtime in low-power states.
Is the I.C. pin on the MAX1963EZT075 functional or should it be left unconnected?
The I.C. pin (Pin 5) on the MAX1963EZT075 is internally connected and has no external function. The MAX1963EZT075 datasheet explicitly states it may be left floating or tied to GND - connecting it elsewhere or applying voltage will not affect MAX1963EZT075 operation and is not recommended.
MAX1963EZT075 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):
- 0.75V
- 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
MAX1963EZT075 FAQ
1.How can I place an order for MAX1963EZT075 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1963EZT075 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 MAX1963EZT075 reliable?
The price and inventory of MAX1963EZT075 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1963EZT075 is usually 5 days.
3.What payment methods are accepted for MAX1963EZT075?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1963EZT075 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1963EZT075?
MAX1963EZT075 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1963EZT075 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 MAX1963EZT075?
For technical support, including MAX1963EZT075 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1963EZT075 requirements.
6.How does Aetrix verify that MAX1963EZT075 is sourced from the original manufacturer or authorized distributors?
All MAX1963EZT075 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 MAX1963EZT075 meets industry standards.
7.What is the process for return or replacement of MAX1963EZT075?
All MAX1963EZT075 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1963EZT075, 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 MAX1963EZT075 part is unused and in its original packaging.
Return procedure for MAX1963EZT075:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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