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Analog Devices Inc./Maxim Integrated MAX1589EZT130+T
- Part No.:
- MAX1589EZT130+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MAX1589EZT130+T.pdf
- Description:
- IC REG LIN 1.3V 500MA TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,573
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Product details
Overview
MAX1589EZT130+T from Maxim Integrated is a low-dropout linear regulator with integrated reset output, designed for battery-powered portable electronics. It delivers 500mA continuous output current with ±0.5% initial accuracy at 1.3V, operates from 1.62V to 3.6V input, and features 175mV dropout at full load - enabling extended runtime in PDAs, digital cameras, and cellular handsets.
For engineers reviewing the MAX1589EZT130+T datasheet, MAX1589EZT130+T pinout, MAX1589EZT130+T application, or MAX1589EZT130+T equivalent, key selection criteria include guaranteed 500mA load capability under low-input-voltage conditions, active-low open-drain RESET timing (≥70ms delay), and compatibility with 1µF/4.7µF ceramic bypass networks for stable operation across -40°C to +85°C.
Technical Context
The MAX1589EZT130+T employs an internal P-channel MOSFET pass transistor (RDS(ON) = 0.33Ω) to achieve low quiescent current (90µA typical at 500mA) independent of load and dropout voltage. Its error amplifier compares a precision bandgap reference against a fixed internal feedback divider to regulate 1.3V output.
RESET functionality is implemented via a dedicated power-good comparator monitoring VOUT; it asserts low when VOUT falls below 82.5% of nominal (1.079V) and remains asserted ≥70ms after regulation is achieved. Shutdown control is logic-level compatible (VIL ≤ 0.6V, VIH ≥ 1.4V) with sub-1µA off-state supply current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.30V preset, trimmed to ±0.5% initial accuracy - ensures stable core voltage for 1.3V I/O or logic rails without external resistors. |
| Max Output Current | 500mA continuous - supports high-current peripherals like camera sensors or RF front-ends in compact handheld devices. |
| Dropout Voltage | 175mV at 500mA - enables operation down to 1.475V input, extending usable battery life in single-cell Li-ion or Li-poly systems. |
| Input Voltage Range | 1.62V to 3.6V - compatible with partially discharged batteries and multi-rail system supplies. |
| RESET Delay | 70ms minimum assertion time after VOUT regulation - meets microprocessor power-on reset timing requirements per JEDEC JESD84-B51. |
| Ground Current | 90µA typical at 500mA load - minimizes standby power loss and maintains efficiency near dropout. |
| PSRR | 70dB at <1kHz - suppresses switching noise from adjacent DC-DC converters in mixed-signal portable designs. |
Pinout & Package
MAX1589EZT130+T is packaged in a 6-pin thin SOT23 (1.1mm height) with exposed pad thermal enhancement. Pin 1 = IN, Pin 2 = GND, Pin 3 = SHDN, Pin 4 = RESET, Pin 5 = I.C. (internally connected, float or tie to GND), Pin 6 = OUT.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Regulator input supply | Accepts 1.62V–3.6V; requires ≥1µF ceramic bypass to GND for stability and transient response. |
| 2 (GND) | Power ground and thermal path | Serves as primary heatsink; must be soldered to large PCB copper area to sustain 500mA at elevated ambient temperatures. |
| 3 (SHDN) | Active-low shutdown control | Pulls OUT to GND via 1.5kΩ resistor and disables regulator when low; draws <1µA in shutdown. |
| 4 (RESET) | Active-low open-drain reset flag | Asserts low during power-up/brownout; requires external pull-up for µP interface; timing referenced to VOUT regulation. |
| 5 (I.C.) | Internally connected node | No external connection required; may be left floating or tied to GND for mechanical stability. |
| 6 (OUT) | Regulated 1.3V output | Supplies up to 500mA; requires 4.7µF low-ESR ceramic capacitor to GND for loop stability and load-transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Low-input-voltage operation | Starts regulation at 1.62V input - supports deep-discharge battery use cases where other LDOs fail to start. |
| P-channel MOSFET pass element | RDS(ON) = 0.33Ω - eliminates base-drive current loss, enabling 90µA quiescent current even at 500mA load and in dropout. |
| Integrated RESET with hysteresis | 82.5% VOUT threshold with 1.7% hysteresis - prevents chatter during brownout recovery and ensures clean processor reset signaling. |
| Thermal-overload protection | Shuts down at +165°C junction temperature with 15°C hysteresis - provides fault-safe operation without external thermal management circuitry. |
| Short-circuit current limit | 850mA typical trip level - protects downstream circuitry while allowing brief inrush currents during power-up sequences. |
Applications
| Digital Still Cameras | Cellular Handsets |
|---|---|
Use Scenario: Powering image sensor analog front-end and ISP core logic requiring stable 1.3V rail. IC Role / Device Role / Timing Role: Primary low-noise 1.3V LDO with RESET supervision for sensor initialization sequence. Use Value: 70ms RESET delay ensures proper sensor register configuration before firmware execution; 175mV dropout extends capture time from single-cell Li-ion. |
Use Scenario: Supplying application processor I/O voltage in GSM/PCS handsets with tight battery voltage range. IC Role / Device Role / Timing Role: System-level 1.3V power rail generator with brownout detection and controlled power-up sequencing. Use Value: ±0.5% output accuracy maintains signal integrity across RF transceiver interfaces; low 90µA IQ preserves standby battery life. |
| Notebook Subsystems | PCMCIA Cards |
Use Scenario: Providing auxiliary 1.3V supply for embedded controller or touchpad ASIC in ultraportable notebooks. IC Role / Device Role / Timing Role: Secondary regulated rail with logic-controlled enable and power-good signaling to host EC. Use Value: SHDN pin allows dynamic rail disable during sleep states; RESET output synchronizes EC firmware boot with power stabilization. |
Use Scenario: Regulating 1.3V for PCMCIA card controller logic in legacy expansion slots. IC Role / Device Role / Timing Role: Compact-area LDO with integrated reset for hot-plug detection and card initialization. Use Value: 6-pin SOT23 footprint fits constrained card edge space; 1.62V min input accommodates variable host supply sag during insertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS79513DCQ | Fixed 1.3V output, 500mA, 160mV dropout at 500mA, but requires ≥2.7V input - incompatible with sub-2.7V battery operation. | Lacks integrated RESET output; requires external supervisor IC for power-on reset functionality. | Select only if system input stays >2.7V and RESET is provided elsewhere. |
| MCP1825-1302E/DB | 1.3V fixed output, 500mA, 250mV dropout at 500mA, 1.7V min input - higher dropout limits usable battery range. | Includes RESET but with 200ms fixed delay - longer than MAX1589EZT130+T's 70ms minimum, potentially delaying system boot. | Consider when board layout favors SOT-23-5 package and longer reset hold time is acceptable. |
Compared with TPS79513DCQ and MCP1825-1302E/DB, MAX1589EZT130+T uniquely combines 1.62V minimum input, 175mV dropout, and guaranteed 70ms RESET timing - making it the only option supporting deep-discharge battery operation while meeting tight microprocessor reset windows.
Availability
MAX1589EZT130+T is available at Aetrix Electronics and suitable for portable medical monitors, industrial handheld scanners, and automotive infotainment subsystems requiring stable component supply with guaranteed long-term availability.
Supply support for MAX1589EZT130+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, communications, and consumer applications.
The MAX1589 series was developed specifically for ultra-low-voltage, high-current portable power management - addressing the need for efficient 1.3V–3.0V rails in battery-constrained devices with integrated system supervision.
FAQ
What is the exact output voltage of MAX1589EZT130+T and how is it set?
The MAX1589EZT130+T delivers a factory-trimmed fixed output voltage of 1.30V. This value is set by internal laser-trimmed resistive feedback, eliminating the need for external resistors. The device achieves ±0.5% initial accuracy at +25°C and maintains ±1.5% over the full -40°C to +85°C operating range, as confirmed in the Electrical Characteristics table.
Does MAX1589EZT130+T require external capacitors, and what values are mandatory?
Yes, MAX1589EZT130+T requires two external ceramic capacitors for stable operation: a minimum 1µF capacitor between IN and GND, and a minimum 4.7µF low-ESR (≤30mΩ) capacitor between OUT and GND. These values are specified in the Applications Information section and validated across temperature and load conditions up to 500mA.
How does the RESET output of MAX1589EZT130+T behave during power-up and brownout?
The RESET output of MAX1589EZT130+T is an active-low open-drain signal that remains asserted (low) until VOUT reaches ≥82.5% of 1.30V (i.e., ≥1.079V) and stays low for a guaranteed minimum of 70ms thereafter. During brownout, RESET falls immediately when VOUT drops below that threshold, providing precise microprocessor supervision without external components.
What thermal considerations apply to MAX1589EZT130+T in the thin SOT23 package?
In the thin SOT23 package, MAX1589EZT130+T has a thermal resistance (θJA) of 110°C/W on a 1in² 1oz copper pad. At 500mA and 1.0V dropout (0.5W dissipation), junction temperature rise exceeds safe limits above +70°C ambient. Therefore, GND pin must be soldered to an expanded copper pour, and operation above 70°C ambient requires derating or use of the TDFN variant.
Is MAX1589EZT130+T pin-compatible with other variants in the MAX1589 family?
Yes, all MAX1589 variants - including MAX1589EZT130+T - share identical 6-pin thin SOT23 pinout and footprint regardless of output voltage suffix. Pin 1 is always IN, Pin 2 is GND, Pin 3 is SHDN, Pin 4 is RESET, Pin 5 is I.C., and Pin 6 is OUT. This allows drop-in replacement across voltage options without PCB redesign.
MAX1589EZT130+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- 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):
- 1.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- 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
MAX1589EZT130+T FAQ
1.How can I place an order for MAX1589EZT130+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1589EZT130+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 MAX1589EZT130+T reliable?
The price and inventory of MAX1589EZT130+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1589EZT130+T is usually 5 days.
3.What payment methods are accepted for MAX1589EZT130+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1589EZT130+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1589EZT130+T?
MAX1589EZT130+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1589EZT130+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 MAX1589EZT130+T?
For technical support, including MAX1589EZT130+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1589EZT130+T requirements.
6.How does Aetrix verify that MAX1589EZT130+T is sourced from the original manufacturer or authorized distributors?
All MAX1589EZT130+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 MAX1589EZT130+T meets industry standards.
7.What is the process for return or replacement of MAX1589EZT130+T?
All MAX1589EZT130+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1589EZT130+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 MAX1589EZT130+T part is unused and in its original packaging.
Return procedure for MAX1589EZT130+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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