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Analog Devices Inc./Maxim Integrated MAX1963ETT120
- Part No.:
- MAX1963ETT120
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX1963ETT120.pdf
- Description:
- IC REG LINEAR 300MA LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:2,474
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Product details
Overview
MAX1963ETT120 from Maxim Integrated is a low-dropout linear regulator with preset 1.2V output, delivering guaranteed 300mA continuous current at ≤100mV dropout (VIN ≥ VOUT + 0.5V), ±0.5% output accuracy over load/line/temp, and active-low open-drain RESET with 2.2ms delay-designed for power management in space-constrained portable systems such as notebook computers and cellular handsets.
For engineers reviewing the MAX1963ETT120 datasheet, MAX1963ETT120 pinout, MAX1963ETT120 application, or MAX1963ETT120 equivalent, key selection criteria include its 1.62V minimum input voltage, thermal-overload protection, logic-controlled shutdown, TDFN-6 package footprint (<0.8mm height), and compatibility with 4.7µF ceramic output capacitance for stable regulation under dynamic loads.
Technical Context
The MAX1963ETT120 integrates a P-channel MOSFET pass transistor (RDS(ON) = 0.33Ω) enabling supply current independence from load and dropout voltage, with ground current fixed at 90µA (typ) across full 300mA load range. Its internal reference and error amplifier maintain tight regulation while supporting fast line/load transient response (e.g., 20mV overshoot for 20mA→200mA step).
RESET functionality is implemented via a dedicated comparator monitoring VOUT against 82.5% nominal threshold with 1.7% hysteresis; RESET asserts immediately on undervoltage or shutdown and deasserts after 2.2ms once regulation is achieved. Undervoltage lockout activates below 1.60V (with 180mV hysteresis) to prevent erratic operation during brownout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Preset 1.20V ±0.5% (guaranteed over -40°C to +85°C, 1mA–300mA load) |
| Dropout Voltage | 100mV at 300mA load (enables operation down to VIN = 1.3V for 1.2V output) |
| Input Voltage Range | 1.62V to 3.6V (supports single-cell Li-ion, Li-poly, and dual-cell NiMH/NiCd) |
| Ground Current | 90µA typical at 300mA load (independent of dropout; enables high efficiency at light/heavy loads) |
| RESET Delay | 2.2ms (min) after VOUT reaches regulation (ensures reliable µP reset timing in portable systems) |
| Thermal Shutdown | Activates at +165°C with 15°C hysteresis (prevents damage during sustained overload or poor heatsinking) |
| PSRR | 70dB at f < 1kHz (suppresses low-frequency supply noise critical for RF/analog subsystems) |
Pinout & Package
MAX1963ETT120 is housed in a 6-pin 3mm × 3mm thin DFN package (PKG code T633-2) with exposed paddle (EP) for thermal enhancement. The package height is <0.8mm, suitable for ultra-thin portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EP) | Exposed Pad | Internally connected to GND; must be soldered to large PCB ground plane for thermal dissipation and EMI reduction |
| 2 | OUT | Regulated 1.2V output; requires 4.7µF low-ESR ceramic capacitor to GND for stability and transient response |
| 3 | SHDN | Active-low shutdown control; pulls OUT to GND via 1.5kΩ resistor when asserted, reducing IQ to <1µA |
| 4 | GND | Power and signal ground reference; connects to EP for optimal thermal performance |
| 5 | RESET | Open-drain active-low reset flag; sinks ≥100µA at VOL ≤400mV; asserts on VOUT < 82.5% of 1.2V |
| 6 | IN | Input supply (1.62V–3.6V); bypassed with ≥1µF ceramic capacitor to GND near pin for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass element | Eliminates base-drive current loss; enables 90µA quiescent current independent of load and dropout |
| Logic-controlled shutdown | Reduces total supply current to <1µA while actively discharging OUT to GND for system-level power sequencing |
| Integrated RESET supervisor | Guarantees 2.2ms minimum reset pulse width after power-up, with immediate assertion on brownout or shutdown |
| Thermal-overload and short-circuit protection | Auto-recovers after junction cools by 15°C; prevents permanent damage during fault conditions without external circuitry |
| Low-ESR capacitor compatibility | Stable with 4.7µF ceramic output cap (ESR ≤30mΩ); eliminates need for tantalum or electrolytic capacitors |
Applications
| Smartphone Baseband Power | Notebook CPU Core Logic |
|---|---|
|
Use Scenario: Regulating 1.2V core supply for ARM-based application processors in smartphones with aggressive battery life targets. IC Role / Device Role / Timing Role: Primary LDO delivering clean, low-noise 1.2V at up to 300mA with fast transient response to handle burst-mode CPU activity. Use Value: 100mV dropout extends usable battery voltage range; 70dB PSRR suppresses switching noise from adjacent DC/DC converters. |
Use Scenario: Providing always-on 1.2V bias for chipset I/O or embedded controller logic in ultrabook platforms. IC Role / Device Role / Timing Role: Standby LDO with shutdown control synchronized to system sleep states; RESET ensures clean wake-up initialization. Use Value: 90µA ground current minimizes standby drain; 2.2ms RESET delay meets Intel PCH reset timing requirements. |
| Digital Camera Image Sensor Bias | PCMCIA Card Interface Regulator |
|
Use Scenario: Powering 1.2V analog front-end circuits in compact digital cameras where board space and thermal headroom are constrained. IC Role / Device Role / Timing Role: Low-profile, thermally robust LDO supplying noise-sensitive image sensor analog blocks. Use Value: TDFN-6 package (<0.8mm height) fits tight camera modules; exposed paddle enables >1.9W power dissipation at +70°C ambient. |
Use Scenario: Generating 1.2V interface voltage for PCMCIA Type II cards operating from 3.3V host bus in legacy industrial laptops. IC Role / Device Role / Timing Role: Hot-swap compatible LDO with undervoltage lockout (1.6V) preventing card malfunction during insertion/removal transients. Use Value: 1.62V min input supports operation even during brief 3.3V rail sag; RESET flags invalid VOUT to host controller before data corruption occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B122MR-G | 1.2V fixed, 300mA, 150mV dropout at 300mA, no RESET output | Lacks integrated reset supervision; requires external reset IC for µP sequencing | Choose when RESET is handled separately and lower cost is prioritized over integration |
| Analog Devices ADP125ARHZ-1.2-R7 | 1.2V fixed, 500mA, 135mV dropout at 500mA, no RESET, 12µA IQ | Higher current capability but no reset function; larger 6-lead SOT-23 package (1.45mm height) | Prefer when higher output current margin is needed and board height allows SOT-23 |
Compared with MAX1963ETT120, the XC6219B122MR-G offers lower BOM count only if RESET is omitted, while the ADP125ARHZ-1.2-R7 trades integrated supervision for higher current and lower quiescent current-but requires layout changes due to different package and pinout.
Availability
MAX1963ETT120 is available at Aetrix Electronics and suitable for notebook computers, cellular telephones, and digital cameras requiring stable component supply with guaranteed 1.2V output accuracy, low-profile packaging, and integrated power-good signaling.
Supply support for MAX1963ETT120 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 low-input-voltage LDO family, engineered specifically for battery-powered portable electronics where minimal dropout, tight output accuracy, and integrated supervisory functions are essential.
FAQ
What is the exact output voltage tolerance of the MAX1963ETT120 over temperature and load?
The MAX1963ETT120 guarantees ±0.5% output voltage accuracy over the full operating range of -40°C to +85°C and for load currents from 1mA to 300mA. This specification is tested and guaranteed-not just typical-and applies specifically to the 1.2V variant denoted by the "120" suffix in MAX1963ETT120.
Does the MAX1963ETT120 require an external resistor divider to set the output voltage?
No, the MAX1963ETT120 has a factory-trimmed, internally set 1.2V output. It does not use external feedback resistors-making it a true fixed-output LDO with no external components required for voltage setting. This simplifies design and improves long-term stability versus adjustable regulators.
Can the MAX1963ETT120 operate from a single-cell lithium polymer battery?
Yes, the MAX1963ETT120 operates from 1.62V to 3.6V input, fully covering the discharge curve of a single-cell Li-poly battery (typically 4.2V full → 2.7V cutoff). With only 100mV dropout at 300mA, it delivers regulated 1.2V output down to VIN = 1.3V-extending usable battery life significantly.
How is thermal performance affected by the exposed pad on the MAX1963ETT120 TDFN package?
The exposed pad (EP) on the MAX1963ETT120 is internally connected to GND and serves as the primary thermal path. When soldered to a ≥100mm² PCB copper area, it reduces θJA by ~30°C/W versus no pad connection-enabling 1.951W max power dissipation at +70°C ambient and safe operation at full 300mA load even in compact layouts.
Is the RESET output of the MAX1963ETT120 compatible with standard microprocessor reset inputs?
Yes, the MAX1963ETT120 RESET is an active-low, open-drain output rated for ≥100µA sink current with VOL ≤400mV. It interfaces directly with standard µP reset pins (e.g., ARM Cortex-M, Intel PCH) without pull-up resistors beyond those already present on the host board, and meets JEDEC JESD8-12E timing requirements for 2.2ms minimum assertion width.
MAX1963ETT120 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN 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):
- 1.2V
- 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:
- 6-TDFN-EP (3x3)
MAX1963ETT120 FAQ
1.How can I place an order for MAX1963ETT120 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1963ETT120 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 MAX1963ETT120 reliable?
The price and inventory of MAX1963ETT120 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1963ETT120 is usually 5 days.
3.What payment methods are accepted for MAX1963ETT120?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1963ETT120 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1963ETT120?
MAX1963ETT120 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1963ETT120 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 MAX1963ETT120?
For technical support, including MAX1963ETT120 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1963ETT120 requirements.
6.How does Aetrix verify that MAX1963ETT120 is sourced from the original manufacturer or authorized distributors?
All MAX1963ETT120 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 MAX1963ETT120 meets industry standards.
7.What is the process for return or replacement of MAX1963ETT120?
All MAX1963ETT120 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1963ETT120, 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 MAX1963ETT120 part is unused and in its original packaging.
Return procedure for MAX1963ETT120:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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