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Analog Devices Inc./Maxim Integrated MAX1589EZT100+
- Part No.:
- MAX1589EZT100+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MAX1589EZT100+.pdf
- Description:
- IC REG LINEAR 500MA LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:3,034
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Product details
Overview
MAX1589EZT100+ from Maxim Integrated is a low-dropout linear regulator with preset 1.0V output, delivering guaranteed 500mA continuous current from 1.62V–3.6V input. It features ±0.5% initial output accuracy, 175mV dropout at full load, active-low open-drain RESET output with 70ms delay, and logic-controlled shutdown-designed for power rails in portable digital still cameras and cellular handsets.
For engineers reviewing the MAX1589EZT100+ datasheet, MAX1589EZT100+ pinout, MAX1589EZT100+ application, or MAX1589EZT100+ equivalent, this page provides verified package mapping (6-pin thin SOT23), confirmed thermal protection behavior (+165°C shutdown), validated reset threshold (82.5% VOUT), real-world load-transient response (35mV for 100mA→500mA step), and RoHS-compliant sourcing status.
Technical Context
The MAX1589EZT100+ uses an internal P-channel MOSFET pass transistor (RDS(ON) = 0.33Ω) to achieve low dropout and supply-current independence from load or input-output differential. Its error amplifier compares a precision bandgap reference against a fixed internal feedback divider to regulate the 1.0V output.
RESET assertion is controlled by a dedicated power-good comparator monitoring VOUT against an 82.5% threshold with 1.7% hysteresis; the 70ms minimum delay is implemented via an internal timer. Shutdown disconnects OUT from IN, pulls OUT to GND via 1.5kΩ, and reduces IQ to <1µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0V ±0.5% (initial accuracy), stable over -40°C to +85°C |
| Max Output Current | 500mA continuous; current limit trips at 850mA typical to prevent damage |
| Dropout Voltage | 175mV at 500mA load (VOUT ≥ 1.8V); scales linearly with load per RDS(ON) |
| Input Voltage Range | 1.62V to 3.6V; includes undervoltage lockout at 1.30–1.60V with hysteresis |
| RESET Delay | 70–100ms after VOUT reaches regulation; falls immediately on brownout or shutdown |
| Quiescent Current | 90µA typical at 500mA load; drops to <1µA in shutdown mode |
| Thermal Protection | Shuts down at +165°C junction temperature; restarts after 15°C cooldown hysteresis |
Pinout & Package
MAX1589EZT100+ is packaged in a RoHS-compliant 6-pin thin SOT23 (1.0mm height, pkg code Z6+1*), with exposed pad not present. GND serves as thermal path; I.C. pin must be left floating or tied to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN | Regulator input; requires ≥1µF ceramic bypass to GND; supports 1.62–3.6V |
| 2 | GND | Power and thermal ground; solder to large copper area for heat dissipation |
| 3 | SHDN | Active-low enable; logic high (≥1.4V) enables operation; logic low (<0.6V) enters shutdown |
| 4 | RESET | Open-drain active-low reset flag; pulled low during power-up/brownout; rises after 70ms regulation |
| 5 | I.C. | Internally connected; no external connection required; leave floating or tie to GND |
| 6 | OUT | 1.0V regulated output; sources up to 500mA; requires 4.7µF low-ESR ceramic capacitor to GND |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass device | Eliminates base-drive current loss; enables 90µA quiescent current even at full 500mA load and in dropout |
| Integrated RESET supervisor | Guarantees 70ms minimum reset pulse width with 82.5% VOUT threshold and 1.7% hysteresis |
| Logic-controlled shutdown | Reduces supply current to <1µA; internally pulls OUT to GND via 1.5kΩ resistor |
| Thermal-overload protection | Turns off pass transistor at +165°C junction; auto-restarts after 15°C cooldown to sustain fault tolerance |
| Low-ESR capacitor compatibility | Stable with ≤30mΩ output capacitor ESR; optimized for standard 4.7µF ceramic capacitors |
Applications
| Digital Still Cameras | Cellular Handsets |
|---|---|
Use Scenario: Powering image sensor and ISP core voltage rail under variable battery discharge (2.8V–3.6V). IC Role / Device Role / Timing Role: Primary 1.0V LDO supplying noise-sensitive analog front-end circuitry. Use Value: 86µVRMS output noise and 70dB PSRR at 1kHz ensure clean power for low-noise image capture. | Use Scenario: Supplying application processor I/O or memory interface voltage in GSM/PCS handsets. IC Role / Device Role / Timing Role: Fixed 1.0V regulator with integrated RESET for reliable boot sequencing. Use Value: 70ms RESET delay ensures microprocessor initialization completes before release from reset. |
| Notebook Computer Subsystem | PCMCIA Card Power |
Use Scenario: Providing auxiliary 1.0V rail for embedded controller or touchpad ASIC in ultraportable notebooks. IC Role / Device Role / Timing Role: Low-quiescent-current LDO enabling long standby battery life. Use Value: 90µA IQ at full load extends battery runtime versus bipolar-based alternatives. | Use Scenario: Hot-swap power management for PCMCIA Type II cards requiring regulated 1.0V logic supply. IC Role / Device Role / Timing Role: Input-rated LDO with fast transient response and short-circuit protection. Use Value: 35mV load-step overshoot (100mA→500mA) prevents logic glitches during card insertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS79510DBVR | 1.0V fixed output, 500mA, 160mV dropout, but requires external RESET circuit; no integrated reset flag | Lacks built-in RESET supervision; demands additional discrete components for power-on reset timing | Select when board space allows separate reset IC and higher PSRR (75dB @ 1kHz) is prioritized |
| MCP1825-1002E/DB | 1.0V fixed output, 500mA, 250mV dropout, 1.5% accuracy, no RESET output | No reset functionality; wider output tolerance increases risk of marginal microcontroller operation | Choose only if RESET is handled externally and cost sensitivity outweighs integration benefits |
Compared with TPS79510DBVR and MCP1825-1002E/DB, the MAX1589EZT100+ uniquely integrates precise 70ms RESET timing and maintains ±0.5% accuracy without external components-reducing BOM count and improving boot reliability in space-constrained portable designs.
Availability
MAX1589EZT100+ is available at Aetrix Electronics and suitable for digital still cameras, cellular handsets, and notebook computer subsystems requiring stable component supply, RoHS compliance, and guaranteed 500mA output capability across industrial temperature range (-40°C to +85°C).
Supply support for MAX1589EZT100+ 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 and mixed-signal ICs for power management, sensing, and connectivity in portable and industrial systems.
The MAX1589 product line delivers low-input-voltage, high-accuracy LDOs with integrated RESET for battery-powered equipment where compact size, low quiescent current, and reliable power sequencing are critical.
FAQ
What is the output voltage tolerance of the MAX1589EZT100+ over temperature and load?
The MAX1589EZT100+ maintains ±0.5% initial accuracy at +25°C. Over -40°C to +85°C and 1mA–500mA load, total output voltage variation is ±1.5%, as specified in the Electrical Characteristics table. This includes contributions from line regulation (±0.15%/V), load regulation (±0.5%), and temperature drift-all verified across production units.
Does the MAX1589EZT100+ require an external capacitor on the I.C. pin?
No, the I.C. pin on the MAX1589EZT100+ is internally connected and does not require any external capacitor or bias network. The datasheet explicitly states it may be left floating or tied to GND-no decoupling or filtering is needed, simplifying layout and reducing component count.
How does the RESET output behave during input undervoltage conditions?
During input undervoltage (VIN falling below 1.30V), the MAX1589EZT100+ asserts RESET low immediately. RESET remains asserted until VIN rises above the UVLO threshold (1.60V max), VOUT reaches regulation, and then holds low for a guaranteed minimum 70ms before releasing-ensuring robust microprocessor reset during brownout events.
Can the MAX1589EZT100+ operate with a 1.62V input and 1.0V output?
Yes-the MAX1589EZT100+ supports 1.62V minimum input and delivers 1.0V output with 175mV dropout at 500mA. At 1.62V input, the maximum sustainable output current is ~350mA (per dropout curve), but light loads (e.g., 100mA) fully meet specification. This enables operation down to end-of-life Li-ion cell voltage (~2.8V nominal → 2.5V discharged).
What thermal derating applies to the MAX1589EZT100+ in its SOT23 package?
The MAX1589EZT100+ in thin SOT23 has a thermal resistance θJA of 110°C/W on a 1in² 1oz copper pad. At TA = +70°C, maximum power dissipation is 727mW; above +70°C, it derates at 9.1mW/°C. For 500mA load at 1.0V output, VIN must stay ≤2.5V to avoid exceeding thermal limits in still-air conditions.
MAX1589EZT100+ 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):
- 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:
- TSOT-23-6
MAX1589EZT100+ FAQ
1.How can I place an order for MAX1589EZT100+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1589EZT100+ 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 MAX1589EZT100+ reliable?
The price and inventory of MAX1589EZT100+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1589EZT100+ is usually 5 days.
3.What payment methods are accepted for MAX1589EZT100+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1589EZT100+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1589EZT100+?
MAX1589EZT100+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1589EZT100+ 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 MAX1589EZT100+?
For technical support, including MAX1589EZT100+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1589EZT100+ requirements.
6.How does Aetrix verify that MAX1589EZT100+ is sourced from the original manufacturer or authorized distributors?
All MAX1589EZT100+ 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 MAX1589EZT100+ meets industry standards.
7.What is the process for return or replacement of MAX1589EZT100+?
All MAX1589EZT100+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1589EZT100+, 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 MAX1589EZT100+ part is unused and in its original packaging.
Return procedure for MAX1589EZT100+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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