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Analog Devices Inc./Maxim Integrated MAX1589ETT100+
- Part No.:
- MAX1589ETT100+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX1589ETT100+.pdf
- Description:
- IC REG LINEAR 500MA LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:5,101
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Product details
Overview
The MAX1589ETT100+ from Maxim Integrated is a low-dropout linear regulator with integrated active-low open-drain RESET output, designed for battery-powered portable electronics. It delivers 500mA continuous output current with ±0.5% initial accuracy at 1.0V preset output, operates from 1.62V to 3.6V input, and features 175mV dropout at full load-enabling extended runtime in notebook computers and digital still cameras.
For engineers reviewing the MAX1589ETT100+ datasheet, MAX1589ETT100+ pinout, MAX1589ETT100+ application, or MAX1589ETT100+ equivalent, key selection criteria include guaranteed 500mA output under low-input-voltage conditions (≥1.62V), thermal-overload and short-circuit protection, logic-controlled shutdown, and compatibility with 4.7µF low-ESR ceramic output capacitance for stable transient response.
Technical Context
The MAX1589ETT100+ employs an internal P-channel MOSFET pass transistor (RDS(ON) = 0.33Ω) to achieve low quiescent current (90µA typ at 500mA) independent of load and dropout voltage. Its error amplifier compares a precision reference against internal feedback to regulate output voltage with minimal line/load regulation drift.
RESET functionality is implemented via a dedicated power-good comparator asserting active-low output for ≥70ms after VOUT reaches regulation, with threshold accuracy of ±2.5% (80–85% of nominal VOUT) and hysteresis of ~1.7%. Shutdown mode reduces supply current to <1µA while actively pulling OUT to GND via a 1.5kΩ resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Preset to 1.0V ±0.5% initial accuracy; stable over -40°C to +85°C and 1mA–500mA load range. |
| Maximum Output Current | Guaranteed 500mA continuous; current limit trips at 850mA typical to protect against overload. |
| Dropout Voltage | 175mV at 500mA load and VOUT ≥ 1.8V; enables operation down to 1.62V input for single-cell Li-ion or Li-poly systems. |
| Ground Current | 90µA typical at 500mA load and in dropout; ensures minimal battery drain during high-current operation. |
| RESET Delay | 70ms minimum assertion time after VOUT reaches regulation; provides reliable µP reset timing without external RC networks. |
| Input Voltage Range | 1.62V to 3.6V; supports direct connection to partially discharged batteries and low-voltage rails. |
| PSRR | 70dB at f < 1kHz; suppresses ripple from noisy DC-DC converters or switching supplies upstream. |
Pinout & Package
MAX1589ETT100+ uses a 6-pin 3mm × 3mm thin DFN package with exposed thermal pad (EP), RoHS-compliant and lead-free (+ suffix). Package height is <0.8mm, optimized for space-constrained portable designs.
| 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 | Power ground | Primary ground return; also serves as heatsink-must be soldered to large PCB copper area. |
| 3 - SHDN | Active-low shutdown control | Pull low to disable regulator; draws <1µA in shutdown; connect to IN or logic high for normal operation. |
| 4 - RESET | Active-low open-drain reset output | Asserts low during power-up/brownout; rises 100ms after VOUT regulation; requires external pull-up. |
| 5 - I.C. | Internally connected | No external connection required; may be left floating or tied to GND per layout best practice. |
| 6 - OUT | Regulated output | Delivers up to 500mA at 1.0V; requires 4.7µF low-ESR ceramic capacitor to GND for transient stability. |
| EP - Exposed Pad | Thermal ground / mechanical anchor | Electrically connected to GND; must be soldered to PCB ground plane to enable rated 1.951W power dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Low input voltage start-up | Operates from 1.62V min input-supports single-cell Li-ion (2.5–4.2V) across full discharge curve. |
| P-channel MOSFET pass element | Eliminates base-drive current loss; maintains 90µA quiescent current even at 500mA and in dropout. |
| Integrated RESET supervisor | Guarantees ≥70ms reset pulse with 82.5% VOUT threshold-no external monitoring IC needed. |
| Thermal and short-circuit protection | Shuts down at +165°C junction temp with 15°C hysteresis; limits fault current to prevent board damage. |
| Tiny 3mm × 3mm DFN footprint | Reduces PCB area by >50% vs. SOT23-6; exposed pad improves thermal performance for high-current loads. |
Applications
| Smartphone Baseband Power | Digital Still Camera Core Logic |
|---|---|
|
Use Scenario: Powers ARM-based application processor core rail in smartphones operating from single-cell Li-ion battery. IC Role / Device Role / Timing Role: Primary 1.0V LDO delivering regulated core voltage with fast load-transient response to CPU burst activity. Use Value: 35mV typical load-step overshoot (100mA→500mA) and 70µA dropout ground current extend usable battery voltage range. |
Use Scenario: Supplies image signal processor (ISP) and memory interface in compact digital still cameras. IC Role / Device Role / Timing Role: Low-noise 1.0V source with 86µVRMS output noise and 70dB PSRR to preserve image quality. Use Value: Integrated RESET ensures clean ISP boot sequence; TDFN package fits tight camera module layouts. |
| Notebook Computer DDR Memory Termination | PCMCIA Card I/O Interface Rail |
|
Use Scenario: Provides VTT termination voltage for DDR SDRAM in ultra-thin notebooks with constrained thermal envelope. IC Role / Device Role / Timing Role: Precision 1.0V rail with ±0.5% accuracy and <0.5% load regulation ensures DDR signal integrity. Use Value: 175mV dropout allows operation down to 1.175V input-critical when main 1.5V rail sags under peak load. |
Use Scenario: Generates 1.0V I/O supply for PCMCIA/ExpressCard peripherals in legacy industrial laptops. IC Role / Device Role / Timing Role: Compact, robust LDO with shutdown control enabling hot-plug power sequencing. Use Value: Logic-controlled SHDN pin allows host controller to power-cycle peripheral rail without firmware intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS79510DRBR | 1.0V fixed output, 500mA, 160mV dropout at 500mA, but requires minimum 2.0V input voltage. | Lacks integrated RESET output; requires external supervisor IC for power-on reset. | Select when higher input voltage (>2.0V) is available and RESET can be implemented externally. |
| MCP1825-1002E/DB | 1.0V fixed output, 500mA, 250mV dropout at 500mA, 1.7V min input, no RESET output. | Higher dropout limits usable battery range; no built-in reset function or thermal shutdown flag. | Choose only if cost sensitivity outweighs need for RESET supervision and low-input-voltage operation. |
Compared with TPS79510DRBR and MCP1825-1002E/DB, the MAX1589ETT100+ uniquely combines 1.62V minimum input, integrated RESET, and 175mV dropout-making it the only option supporting full Li-ion discharge range with autonomous reset timing in a 3mm × 3mm DFN.
Availability
MAX1589ETT100+ is available at Aetrix Electronics and suitable for notebook computers, digital still cameras, and smartphone baseband power systems requiring stable component supply, RoHS compliance, and long-term production continuity.
Supply support for MAX1589ETT100+ 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 portable, industrial, and communications applications.
The MAX1589 series was designed specifically for low-input-voltage, high-accuracy LDO regulation in space- and power-constrained portable electronics-with emphasis on battery longevity, thermal resilience, and system-level power sequencing via integrated RESET.
FAQ
What is the exact output voltage of the MAX1589ETT100+?
The MAX1589ETT100+ has a factory-preset output voltage of 1.0V with ±0.5% initial accuracy over temperature and load. This value is trimmed during production and does not require external resistors-ensuring consistent 1.0V regulation across all units of MAX1589ETT100+ without configuration overhead.
Does the MAX1589ETT100+ require external capacitors, and what values are recommended?
Yes, the MAX1589ETT100+ requires a 1µF ceramic capacitor between IN and GND, and a 4.7µF low-ESR ceramic capacitor between OUT and GND. These values ensure stability across -40°C to +85°C and up to 500mA load, as validated in the MAX1589ETT100+ datasheet's Typical Operating Characteristics.
How does the RESET output of the MAX1589ETT100+ behave during power-up and brownout?
The RESET output of the MAX1589ETT100+ asserts low when VOUT falls below 82.5% of nominal (i.e., <825mV), remains asserted for ≥70ms after VOUT rises above regulation, and pulls low immediately upon shutdown or input undervoltage. It is open-drain and requires an external pull-up resistor.
Can the MAX1589ETT100+ operate from a single-cell Li-ion battery throughout its full discharge cycle?
Yes-the MAX1589ETT100+ operates from 1.62V to 3.6V input, covering the entire useful discharge range of a single-cell Li-ion battery (≈2.7V–4.2V nominal, down to 2.5V cutoff). Its 175mV dropout at 500mA ensures regulation remains active until battery voltage drops to 1.175V.
What thermal considerations apply to the MAX1589ETT100+ in the 3mm × 3mm TDFN package?
The MAX1589ETT100+ TDFN package requires the exposed pad (EP) to be soldered to a PCB ground plane for effective heat dissipation. With θJA ≈ 41°C/W on a 1in² copper pad, it sustains 1.951W at +70°C ambient-enabling 500mA output even with 2.6V input–1.0V output differential (1.6V × 500mA = 0.8W).
MAX1589ETT100+ 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):
- 1V
- 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)
MAX1589ETT100+ FAQ
1.How can I place an order for MAX1589ETT100+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1589ETT100+ 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 MAX1589ETT100+ reliable?
The price and inventory of MAX1589ETT100+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1589ETT100+ is usually 5 days.
3.What payment methods are accepted for MAX1589ETT100+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1589ETT100+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1589ETT100+?
MAX1589ETT100+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1589ETT100+ 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 MAX1589ETT100+?
For technical support, including MAX1589ETT100+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1589ETT100+ requirements.
6.How does Aetrix verify that MAX1589ETT100+ is sourced from the original manufacturer or authorized distributors?
All MAX1589ETT100+ 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 MAX1589ETT100+ meets industry standards.
7.What is the process for return or replacement of MAX1589ETT100+?
All MAX1589ETT100+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1589ETT100+, 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 MAX1589ETT100+ part is unused and in its original packaging.
Return procedure for MAX1589ETT100+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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