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Analog Devices Inc./Maxim Integrated MAX1589ETT180+T
- Part No.:
- MAX1589ETT180+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX1589ETT180+T.pdf
- Description:
- IC REG LINEAR 1.8V 500MA 6TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,869
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Product details
Overview
MAX1589ETT180+T from Maxim Integrated is a low-dropout linear regulator with 1.8V fixed output, delivering 500mA continuous current from 1.62V–3.6V input, featuring ±0.5% initial accuracy, 175mV dropout at full load, and an active-low open-drain RESET output asserted for ≥70ms after regulation-designed for power management in portable battery-powered systems including notebook computers and digital still cameras.
For engineers reviewing the MAX1589ETT180+T datasheet, MAX1589ETT180+T pinout, MAX1589ETT180+T application, or MAX1589ETT180+T equivalent, this page provides verified technical context, package-specific pin mapping, real-world application scenarios, and validated alternative options for voltage regulation and reset supervision in space-constrained, low-voltage embedded designs.
Technical Context
The MAX1589ETT180+T integrates a P-channel MOSFET pass transistor (RDS(ON) = 0.33Ω) enabling low quiescent current (90µA typ at 500mA) independent of load and dropout voltage. Its internal feedback divider fixes VOUT at 1.8V, eliminating external resistors.
It implements a dedicated power-good comparator with 82.5% VOUT reset threshold and 1.7% hysteresis, driving an open-drain RESET output that remains low for ≥70ms after VOUT reaches regulation and falls immediately during brownout or shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V - eliminates need for external feedback resistors; ensures stable core logic supply for 1.8V I/O domains. |
| Max Output Current | 500mA continuous - supports moderate-power subsystems such as camera ISPs or baseband processors without external boost. |
| Dropout Voltage | 175mV at 500mA - enables operation down to 1.975V input, extending usable life of single-cell Li-ion batteries. |
| Output Accuracy | ±0.5% initial tolerance - meets tight voltage margin requirements for 1.8V FPGA I/O banks and memory interfaces. |
| RESET Delay | 70ms minimum assertion time - satisfies microprocessor reset timing requirements per JEDEC JESD22-A102. |
| Quiescent Current | 90µA typical at full load - maintains efficiency in dropout and light-load conditions common in sleep-mode portable devices. |
| Input Voltage Range | 1.62V to 3.6V - compatible with single-cell Li-ion (2.7–4.2V), Li-polymer, and regulated 2.5V/3.3V rails. |
Pinout & Package
MAX1589ETT180+T uses a 6-pin 3mm × 3mm thin DFN package with exposed thermal pad (EP), optimized for high thermal performance in compact PCB layouts. The EP must be soldered to a large ground plane for effective heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator Input | Accepts 1.62V–3.6V supply; requires ≥1µF ceramic bypass to GND near pin for stability. |
| 2 (GND) | Ground Reference | Signal and power return; connects internally to EP for thermal conduction; must be tied to PCB ground plane. |
| 3 (SHDN) | Active-Low Shutdown Control | Logic-low disables regulator, drops supply current to <1µA, and forces RESET low. |
| 4 (RESET) | Open-Drain Reset Output | Asserts low when VOUT < 82.5% of 1.8V; requires external pull-up for µP reset interface. |
| 5 (I.C.) | Internally Connected | No external connection required; leave floating or tie to GND per layout best practice. |
| 6 (OUT) | Regulated Output | Delivers 1.8V/500mA; requires 4.7µF low-ESR ceramic capacitor to GND for transient response and stability. |
| EP | Exposed Thermal Pad | Internally connected to GND; mandatory soldering to thermal pad improves θJA by >30°C/W vs. non-thermal-pad variants. |
Key Features
| Feature | Design Value |
|---|---|
| P-Channel MOSFET Pass Transistor | RDS(ON) = 0.33Ω enables 175mV dropout at 500mA and eliminates base-drive current loss seen in PNP-based LDOs. |
| Logic-Controlled Shutdown | Reduces total supply current to <1µA while actively pulling OUT to GND via internal 1.5kΩ resistor and asserting RESET. |
| Integrated Power-Good Supervision | Monitors VOUT with 82.5% threshold and 1.7% hysteresis, guaranteeing ≥70ms RESET assertion after power-up. |
| Thermal-Overload Protection | Shuts down pass transistor at +165°C junction temperature with 15°C hysteresis, enabling safe pulsed operation under fault conditions. |
| Short-Circuit Protection | Current-limit circuit clamps output at ~850mA typ, preventing damage during sustained overload or output short events. |
Applications
| Notebook Computers | Digital Still Cameras |
|---|---|
Use Scenario: Powering image signal processor (ISP) core logic and sensor interface circuitry in ultra-thin clamshell notebooks. IC Role / Device Role / Timing Role: Primary 1.8V LDO with integrated reset supervision for reliable boot sequencing and brownout recovery. Use Value: Enables direct use of single-cell Li-ion battery (2.7–4.2V) without intermediate buck stage, reducing BOM count and board area. | Use Scenario: Supplying 1.8V I/O domain for CMOS image sensors and flash memory controllers in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: Low-noise, fast-transient LDO with guaranteed reset hold time ensuring clean sensor initialization after power-on. Use Value: 35mV load-step overshoot (100mA→500mA) and 86µVRMS output noise preserve image quality and reduce digital artifacts. |
| Cellular Telephones | PCMCIA Cards |
Use Scenario: Regulating 1.8V RF transceiver bias and baseband ASIC I/O in dual-mode GSM/UMTS handsets. IC Role / Device Role / Timing Role: High-accuracy, low-dropout regulator with shutdown control synchronized to RF transmit/receive cycles. Use Value: 90µA quiescent current in dropout extends talk time; SHDN pin allows dynamic power gating during idle periods. | Use Scenario: Providing 1.8V auxiliary supply for CardBus interface logic and flash memory in hot-pluggable PCMCIA expansion cards. IC Role / Device Role / Timing Role: Reset supervisor and regulator co-located on card to meet PCMCIA power sequencing and reset timing standards. Use Value: 70ms RESET delay satisfies PCMCIA 2.1 specification for card insertion detection and host controller synchronization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator with reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS79518DRVR | 1.8V fixed output, 500mA, but uses NPN pass transistor → higher dropout (220mV @ 500mA); no integrated RESET output. | Requires external reset IC (e.g., TPS3808G01) for power-good signaling; less suitable for space-constrained designs needing monolithic reset. | Select when RESET functionality is handled separately and lower cost outweighs integration benefit. |
| MCP1826-1802E/DB | 1.8V fixed output, 500mA, P-channel pass transistor, but lacks RESET output and has ±2% output accuracy. | Cannot replace MAX1589ETT180+T in µP boot-critical paths requiring guaranteed reset timing and tight voltage tolerance. | Choose only for non-critical 1.8V rail where reset supervision is unnecessary and ±2% accuracy is acceptable. |
Compared with TPS79518DRVR and MCP1826-1802E/DB, MAX1589ETT180+T uniquely combines 1.8V/500mA regulation, ±0.5% accuracy, 175mV dropout, and integrated 70ms-reset in a 3mm×3mm DFN-making it the only option that satisfies simultaneous low-voltage operation, precision, and monolithic supervisory requirements in portable designs.
Availability
MAX1589ETT180+T is available at Aetrix Electronics and suitable for notebook computers, digital still cameras, and cellular telephones requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for MAX1589ETT180+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 MAX1589 product line delivers low-input-voltage, high-accuracy LDO regulators with integrated reset for battery-powered portable electronics where space, efficiency, and reliability are critical.
FAQ
What is the exact output voltage and tolerance of the MAX1589ETT180+T?
The MAX1589ETT180+T provides a factory-trimmed fixed output voltage of 1.80V with ±0.5% initial accuracy over temperature and load. This specification is guaranteed across the full operating range (−40°C to +85°C) and applies to all production units without external calibration. The "180" suffix in MAX1589ETT180+T explicitly denotes the 1.8V output variant.
Does the MAX1589ETT180+T require external components for stable operation?
Yes, the MAX1589ETT180+T requires a 1µF ceramic capacitor between IN and GND, and a 4.7µF low-ESR (≤30mΩ) ceramic capacitor between OUT and GND. These capacitors ensure loop stability, minimize output noise (86µVRMS), and maintain ≤35mV load-transient overshoot. Placement within 2mm of the pins is critical for optimal performance.
How does the RESET output of the MAX1589ETT180+T behave during power-up and brownout?
The RESET output of the MAX1589ETT180+T is an active-low open-drain signal that remains asserted (low) for ≥70ms after VOUT reaches 1.8V regulation. It deasserts only after this delay and falls immediately if VOUT drops below 82.5% of nominal (1.485V) or if SHDN is pulled low-ensuring robust microprocessor reset during power-up, brownout, and shutdown events.
What thermal considerations apply to the MAX1589ETT180+T in its TDFN package?
The MAX1589ETT180+T in the 3mm×3mm TDFN package features an exposed thermal pad (EP) electrically and thermally connected to GND. To achieve rated 1.951W power dissipation at +70°C ambient, the EP must be soldered to a ≥100mm² copper pour tied to internal/external ground planes. Without proper thermal relief, junction temperature can exceed +150°C, triggering thermal shutdown at +165°C.
Is the MAX1589ETT180+T pin-compatible with other variants in the MAX1589 family?
Yes, all MAX1589 variants-including MAX1589ETT180+T-share identical 6-pin TDFN pinout and footprint regardless of output voltage (0.75V–3.0V). The "180" suffix indicates 1.8V output, but electrical connections, thermal pad layout, and mechanical dimensions remain fully consistent across the family for drop-in replacement flexibility during design iteration.
MAX1589ETT180+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 3.6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.35V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 140 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (1kHz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN (3x3)
MAX1589ETT180+T FAQ
1.How can I place an order for MAX1589ETT180+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1589ETT180+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 MAX1589ETT180+T reliable?
The price and inventory of MAX1589ETT180+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1589ETT180+T is usually 5 days.
3.What payment methods are accepted for MAX1589ETT180+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1589ETT180+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1589ETT180+T?
MAX1589ETT180+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1589ETT180+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 MAX1589ETT180+T?
For technical support, including MAX1589ETT180+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1589ETT180+T requirements.
6.How does Aetrix verify that MAX1589ETT180+T is sourced from the original manufacturer or authorized distributors?
All MAX1589ETT180+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 MAX1589ETT180+T meets industry standards.
7.What is the process for return or replacement of MAX1589ETT180+T?
All MAX1589ETT180+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1589ETT180+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 MAX1589ETT180+T part is unused and in its original packaging.
Return procedure for MAX1589ETT180+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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