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Analog Devices Inc./Maxim Integrated MAX1589ETT180+
- Part No.:
- MAX1589ETT180+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX1589ETT180+.pdf
- Description:
- IC REG LINEAR 500MA LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:49,576
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Product details
Overview
The MAX1589ETT180+ from Maxim Integrated is a low-dropout linear regulator with preset 1.8V output, delivering up to 500mA continuous load current from a 1.62V–3.6V input supply. It features ±0.5% initial output accuracy, 175mV dropout at full load, active-low open-drain RESET output with 70ms delay, and thermal/short-circuit protection - designed for power management in space-constrained portable electronics.
For engineers reviewing the MAX1589ETT180+ datasheet, MAX1589ETT180+ pinout, MAX1589ETT180+ application, or MAX1589ETT180+ equivalent, this page provides verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for battery-powered systems requiring stable low-voltage regulation with power-good supervision.
Technical Context
The MAX1589ETT180+ uses an internal P-channel MOSFET pass transistor (RDS(ON) = 0.33Ω) enabling low quiescent current (90µA typ at 500mA) independent of load and dropout voltage. Its error amplifier compares a precision reference against feedback from an internal voltage divider to regulate output.
RESET functionality is implemented via a dedicated power-good comparator monitoring VOUT; it asserts low when VOUT falls below 82.5% of nominal and remains asserted ≥70ms after recovery. Shutdown is logic-controlled (active-low SHDN), reducing supply current to <1µA while pulling OUT to GND via a 1.5kΩ resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V - eliminates external feedback resistors and ensures stable core voltage for low-power microcontrollers and memory interfaces. |
| Max Output Current | 500mA continuous - supports moderate-power digital loads such as baseband processors or display drivers without external boost circuitry. |
| Dropout Voltage | 175mV at 500mA - enables operation down to ~1.98V input, extending usable battery life in single-cell Li-ion or Li-poly systems. |
| Output Accuracy | ±0.5% initial tolerance - meets tight voltage margin requirements for 1.8V I/O rails and FPGA core supplies. |
| RESET Delay | 70ms minimum assertion time - satisfies boot sequencing timing for most embedded microprocessors requiring stable VOUT before release. |
| Quiescent Current | 90µA typical at full load - maintains efficiency during active operation while minimizing standby drain in always-on subsystems. |
| Input Voltage Range | 1.62V to 3.6V - compatible with partially discharged lithium batteries and regulated intermediate rails in multi-rail power architectures. |
Pinout & Package
MAX1589ETT180+ is housed in a 6-pin 3mm × 3mm thin DFN package (exposed pad), 0.8mm profile, RoHS-compliant and lead-free. Thermal performance is enhanced by soldering the exposed pad (EP) to a PCB ground plane.
| 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 and transient response. |
| 2 - GND | Ground reference and thermal path | Primary ground connection; must be connected to large copper area or ground plane to manage thermal dissipation. |
| 3 - SHDN | Active-low shutdown control | Pull low to disable regulator (IQ < 1µA); tie high or to IN for normal operation; 0.6V/1.4V logic thresholds. |
| 4 - RESET | Active-low open-drain reset flag | Asserts low during power-up/brownout; rises 70–160ms after VOUT reaches regulation; requires external pull-up. |
| 5 - I.C. | Internally connected node | No external connection required; leave floating or connect to GND per layout best practice for noise immunity. |
| 6 - OUT | Regulated output | Delivers 1.8V/500mA; requires 4.7µF low-ESR ceramic capacitor to GND for stability and load-transient suppression. |
| Exposed Pad (EP) | Thermal ground and mechanical anchor | Must be soldered to PCB ground plane to achieve rated power dissipation (1.951W at +70°C ambient). |
Key Features
| Feature | Design Value |
|---|---|
| Low-input-voltage operation | Starts regulation at 1.62V input - enables direct connection to single-cell Li-ion batteries down to end-of-discharge (~2.5V open-circuit). |
| P-channel MOSFET pass element | RDS(ON) = 0.33Ω - eliminates base-drive current loss, ensuring consistent 90µA quiescent current across load and dropout conditions. |
| Integrated RESET supervisor | Guaranteed 70ms delay with 82.5% threshold - replaces discrete reset ICs in compact designs, reducing BOM count and board area. |
| Logic-controlled shutdown | Sub-1µA off-state current - critical for long-term battery hold-up in IoT sensors and wearable devices with deep-sleep modes. |
| Robust protection suite | Thermal shutdown at +165°C (15°C hysteresis) + short-circuit current limiting (850mA typ) - prevents damage during fault conditions without external components. |
Applications
| Smartphone Baseband Power | Digital Still Camera Core Supply |
|---|---|
|
Use Scenario: Powers 1.8V I/O and memory interface of baseband processor in LTE smartphones during active transmission cycles. IC Role / Device Role / Timing Role: Primary low-noise LDO providing regulated rail with RESET signal for safe processor initialization and brownout recovery. Use Value: 175mV dropout extends usable battery range; ±0.5% accuracy ensures compliance with JEDEC 1.8V I/O specs under varying load and temperature. |
Use Scenario: Supplies image sensor interface and DSP core in compact digital still cameras powered by two AA alkaline cells (2.0–3.2V). IC Role / Device Role / Timing Role: Fixed-output LDO with integrated RESET to coordinate sensor initialization and frame capture timing after power ramp. Use Value: 500mA capability handles burst-mode sensor readout; 70ms RESET delay guarantees stable clock domain lock before first exposure. |
| Notebook SoC Auxiliary Rail | PCMCIA Card Interface Regulator |
|
Use Scenario: Generates 1.8V auxiliary supply for PCIe controller or USB PHY in ultra-thin notebooks using single-cell Li-ion battery. IC Role / Device Role / Timing Role: Secondary LDO supporting high-speed interface logic, synchronized to main system RESET via shared supervisor logic. Use Value: Thin DFN package (3×3×0.8mm) fits tight layout constraints; low ESR capacitor compatibility ensures clean signal integrity on high-speed lanes. |
Use Scenario: Provides 1.8V VCC to PCMCIA Type II card slot in industrial handheld terminals operating from 3.3V system rail. IC Role / Device Role / Timing Role: Hot-swap capable LDO with fast turn-on (<90µs) and controlled startup to prevent bus contention during card insertion. Use Value: Active-low SHDN allows software-controlled power gating; RESET output signals card initialization readiness to host controller. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B182MR-G | 1.8V fixed output, 500mA, 250mV dropout at 500mA, no RESET output, SOT-25 package | Lacks integrated RESET and thermal protection; requires external supervisor for power sequencing | Choose when board space permits separate reset IC and lower cost is prioritized over integration. |
| Analog Devices ADP160ACBZ-1.8-R7 | 1.8V fixed output, 150mA max, 195mV dropout, no RESET, 5-pin TSOT-23 | Lower current rating limits use to low-power peripherals; no supervision function | Select only for sub-150mA loads where footprint minimization outweighs need for RESET and higher drive capability. |
Compared with XC6219B182MR-G and ADP160ACBZ-1.8-R7, the MAX1589ETT180+ uniquely combines 500mA delivery, 175mV dropout, ±0.5% accuracy, and integrated RESET in a thermally optimized 3×3mm DFN - making it the sole option among these three suitable for 1.8V core rail generation in battery-powered systems requiring autonomous power-good signaling.
Availability
MAX1589ETT180+ is available at Aetrix Electronics and suitable for notebook computers, cellular telephones, digital still cameras, and PCMCIA card interfaces requiring stable component supply with guaranteed long-term manufacturability and RoHS compliance.
Supply support for MAX1589ETT180+ 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 analog and mixed-signal ICs for power management, sensing, and communications.
The MAX1589 series was developed for portable battery-powered equipment needing high-accuracy, low-input-voltage LDOs with integrated power supervision - targeting PDAs, smartphones, and compact imaging devices.
FAQ
What is the maximum input voltage for the MAX1589ETT180+?
The MAX1589ETT180+ supports an absolute maximum input voltage of +4.0V referenced to GND, but its specified operational range is +1.62V to +3.6V. Operating above +3.6V may cause permanent damage or violate functional specifications. For reliable 1.8V regulation, VIN should remain ≥2.0V to maintain adequate headroom above dropout.
Does the MAX1589ETT180+ require external capacitors, and what values are recommended?
Yes, the MAX1589ETT180+ requires both input and output capacitors for stability. A minimum 1µF ceramic capacitor must be placed between IN and GND, and a 4.7µF low-ESR ceramic capacitor between OUT and GND. These values ensure loop stability across temperature and load, suppress noise, and improve transient response - deviations may cause oscillation or excessive overshoot.
How does the RESET output behave during power-up and brownout events for the MAX1589ETT180+?
The RESET output of the MAX1589ETT180+ is an active-low open-drain signal that remains asserted (low) until VOUT reaches regulation and stays within ±7.5% of 1.8V for at least 70ms. It reasserts immediately if VOUT drops below 82.5% of nominal (1.485V) or during shutdown - providing deterministic power-good signaling for microprocessor reset sequencing.
Can the MAX1589ETT180+ be used in place of the MAX1589EZT180+?
No - the MAX1589ETT180+ uses a 6-pin 3mm × 3mm TDFN package with exposed pad, while the MAX1589EZT180+ uses a 6-pin thin SOT23 package. They share identical electrical specifications and pin functions but differ in thermal performance, PCB footprint, and soldering requirements. Direct substitution requires layout revision and thermal validation.
What protection features are built into the MAX1589ETT180+?
The MAX1589ETT180+ integrates thermal-overload protection (shuts down at +165°C, restarts after 15°C cooldown), short-circuit current limiting (850mA typical), and input undervoltage lockout (1.3V–1.6V threshold). These functions operate autonomously without external components, safeguarding both the IC and downstream circuitry during fault conditions.
MAX1589ETT180+ 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):
- 1.8V
- 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+ FAQ
1.How can I place an order for MAX1589ETT180+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1589ETT180+ 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+ reliable?
The price and inventory of MAX1589ETT180+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1589ETT180+ is usually 5 days.
3.What payment methods are accepted for MAX1589ETT180+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1589ETT180+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1589ETT180+?
MAX1589ETT180+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1589ETT180+ 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+?
For technical support, including MAX1589ETT180+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1589ETT180+ requirements.
6.How does Aetrix verify that MAX1589ETT180+ is sourced from the original manufacturer or authorized distributors?
All MAX1589ETT180+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX1589ETT180+?
All MAX1589ETT180+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1589ETT180+, 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+ part is unused and in its original packaging.
Return procedure for MAX1589ETT180+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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