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Analog Devices Inc./Maxim Integrated MAX8888EZK15-T
- Part No.:
- MAX8888EZK15-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8888EZK15-T.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:1,400
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Product details
Overview
MAX8888EZK15-T from Maxim Integrated is a 1.5V fixed-output, 300mA low-dropout linear regulator with open-drain power-OK (POK) output, 100mV dropout at 200mA, 55µA no-load supply current, and thermal/short-circuit protection. It operates from 2.5V to 5.5V input and is used in battery-powered portable electronics requiring precise, stable low-voltage rails.
For engineers reviewing the MAX8888EZK15-T datasheet, MAX8888EZK15-T pinout, MAX8888EZK15-T application, or MAX8888EZK15-T equivalent, key selection criteria include guaranteed 300mA output under dropout conditions, POK flag timing behavior, SOT23-5 package thermal performance, and compatibility with 2.2µF ceramic input/output capacitors for stability.
Technical Context
The MAX8888EZK15-T integrates a p-channel MOSFET pass transistor with 0.5Ω RDS(ON), enabling ultra-low quiescent current independent of load. Its internal 1.25V reference and error amplifier regulate output via factory-trimmed feedback, delivering ±2% output voltage accuracy over temperature and load.
It features active-low open-drain POK that asserts when VOUT falls below 92.5% of nominal (1.388V), with 1% hysteresis, and supports external pullup to OUT. Shutdown reduces supply current to 0.1µA while driving both OUT and POK low.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±2% over -40°C to +85°C, enabling direct replacement of 1.5V logic or analog rails without external resistors. |
| Max Continuous Output Current | 300mA guaranteed - sufficient to power baseband processors, RF transceivers, or sensor subsystems in handheld devices. |
| Dropout Voltage | 100mV at 200mA - allows operation down to 1.7V input, extending usable life of single-cell Li-ion or NiMH batteries. |
| Supply Current (No Load) | 55µA - maintains efficiency in always-on subsystems like real-time clocks or wake-up controllers. |
| POK Threshold Accuracy | 92.5% of nominal (1.388V) with ±2.5% tolerance - ensures reliable power-on reset signaling for microcontrollers before firmware execution. |
| Thermal Shutdown | Activates at +170°C with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
| PSRR @ 1kHz | 40dB - suppresses switching noise from adjacent DC-DC converters, critical for noise-sensitive analog circuits. |
Pinout & Package
MAX8888EZK15-T is housed in a RoHS-compliant, thin 5-pin SOT23 package (1mm height, Z5-1 outline), optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: IN | Input supply connection | Accepts 2.5V–5.5V; requires ≥2.2µF ceramic bypass to GND for stability and transient response. |
| 2: GND | Power ground reference | Low-impedance return path for regulator current and POK sink; must be connected directly to system ground plane. |
| 3: SHDN | Active-low enable control | Pulled low to reduce supply current to 0.1µA; driven high (≥1.6V) for normal operation; tolerates up to 6V regardless of VIN/VOUT. |
| 4: POK | Open-drain power-OK flag | Asserts low when VOUT < 92.5% of 1.5V; requires external pullup (e.g., 100kΩ to OUT) for logic-level interface with µC reset inputs. |
| 5: OUT | Regulated output | Delivers 1.5V at up to 300mA; requires ≥2.2µF ceramic capacitor (ESR < 0.1Ω) to GND for loop stability and noise filtering. |
Key Features
| Feature | Design Value |
|---|---|
| p-Channel MOSFET pass element | Eliminates base-drive current loss, maintaining 55µA quiescent current even at full 300mA load and in dropout. |
| Factory-set 1.5V output | Removes need for external feedback resistors, reducing BOM count and layout area in cost-sensitive consumer designs. |
| Foldback current limiting | Reduces short-circuit current to 420mA when VOUT drops below 93%, lowering power dissipation during fault conditions. |
| Thermal shutdown with hysteresis | Enables self-recovery during intermittent overload (e.g., burst-mode RF transmission) without requiring system-level intervention. |
| Open-drain POK with internal hysteresis | Provides clean, glitch-free power-good assertion for microcontroller POR sequencing without external comparators or RC delays. |
Applications
| Wireless Handsets | Digital Cameras |
|---|---|
|
Use Scenario: Powering baseband processor I/O banks and camera interface circuitry during active capture mode. IC Role / Device Role / Timing Role: Primary 1.5V LDO supplying noise-sensitive digital interfaces (e.g., MIPI CSI-2) with fast load-transient response. Use Value: 40dB PSRR at 1kHz and 100mV dropout ensure stable voltage despite noisy PMIC switching and declining battery voltage. |
Use Scenario: Supplying image sensor analog front-end and ISP core logic in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: Low-noise, precision 1.5V rail generator with POK confirmation for safe sensor initialization sequence. Use Value: ±2% output accuracy and POK threshold at 1.388V guarantee correct sensor biasing and prevent corrupted frame capture. |
| Notebook Computers | Hand-Held Instruments |
|
Use Scenario: Regulating auxiliary 1.5V supply for embedded controller (EC) or keyboard controller in ultraportable notebooks. IC Role / Device Role / Timing Role: Always-on LDO supporting EC wake-from-sleep functionality with micropower shutdown (<0.1µA). Use Value: 55µA no-load current extends battery standby time; SOT23-5 footprint minimizes PCB area in dense motherboard layouts. |
Use Scenario: Powering precision ADC reference buffers and low-power MCU peripherals in battery-operated multimeters. IC Role / Device Role / Timing Role: Stable, low-drift 1.5V source for ratiometric measurements where supply variation directly impacts accuracy. Use Value: 0.1µA shutdown current enables multi-year shelf life; thermal shutdown protects against probe short-circuit faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P152MR-G | 1.5V fixed, 300mA, no POK output; 120mV dropout at 200mA; 12µA IQ | Lacks power-OK monitoring - unsuitable where system reset sequencing depends on regulated output status. | Select when POK is unnecessary and ultra-low IQ is prioritized over dropout performance. |
| Analog Devices ADP160ACBZ-1.5-R7 | 1.5V fixed, 150mA max, no POK; 195mV dropout at 150mA; 570nA IQ in shutdown | Half the output current rating and no POK - limits use to lower-power peripherals only. | Choose only for sub-150mA loads where nanoscale shutdown current outweighs current capability needs. |
Compared with XC6206P152MR-G and ADP160ACBZ-1.5-R7, the MAX8888EZK15-T uniquely delivers 300mA output with integrated POK flag and 100mV dropout-enabling robust power sequencing and extended battery runtime in mid-power portable systems where both current and monitoring are required.
Availability
MAX8888EZK15-T is available at Aetrix Electronics and suitable for wireless handsets, digital cameras, and notebook computers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX8888EZK15-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 and mixed-signal ICs for power management, sensing, and connectivity in demanding environments.
The MAX8888EZK15-T belongs to Maxim's low-dropout linear regulator product line, engineered specifically for battery-powered portable electronics needing high accuracy, low quiescent current, and integrated power-monitoring features.
FAQ
What is the output voltage tolerance of the MAX8888EZK15-T over temperature and load?
The MAX8888EZK15-T guarantees ±2% output voltage accuracy across the full -40°C to +85°C operating temperature range and for load currents from 100µA to 300mA. This specification is confirmed in the Electrical Characteristics table of the official datasheet (Rev 4, July 2009), ensuring reliable 1.5V regulation for sensitive digital and analog circuitry without external trimming.
Does the MAX8888EZK15-T require external components for stable operation?
Yes, the MAX8888EZK15-T requires two external ceramic capacitors: a minimum 2.2µF capacitor between IN and GND, and another 2.2µF capacitor between OUT and GND, both with ESR < 0.1Ω. These are mandatory for loop stability, transient response, and PSRR performance - omitting them risks oscillation or excessive output ripple.
How does the POK output of the MAX8888EZK15-T behave during shutdown?
During shutdown (SHDN = GND), the MAX8888EZK15-T drives the POK pin low regardless of output voltage level. This behavior is explicitly documented in the Pin Description and Detailed Description sections - POK remains asserted to provide a consistent power-fail signal to downstream logic even when the regulator is disabled.
What is the maximum junction temperature and thermal protection behavior of the MAX8888EZK15-T?
The MAX8888EZK15-T activates thermal shutdown at +170°C junction temperature and resumes operation after cooling by 20°C (hysteresis). This protects the device during sustained overload; however, continuous operation must stay below the absolute maximum junction temperature of +150°C to avoid reliability degradation - verified in the Absolute Maximum Ratings and Thermal Protection sections.
Can the MAX8888EZK15-T be used with input voltages below 2.5V?
No - the MAX8888EZK15-T has a specified minimum input voltage of 2.5V per the Absolute Maximum Ratings and Electrical Characteristics tables. Input undervoltage lockout triggers below ~2.4V (rising), and operation below 2.5V is not characterized or guaranteed. Using VIN < 2.5V may result in unregulated output or undefined POK behavior.
MAX8888EZK15-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- 65 µA
- PSRR:
- 40dB (1kHz)
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
MAX8888EZK15-T FAQ
1.How can I place an order for MAX8888EZK15-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8888EZK15-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 MAX8888EZK15-T reliable?
The price and inventory of MAX8888EZK15-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8888EZK15-T is usually 5 days.
3.What payment methods are accepted for MAX8888EZK15-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8888EZK15-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8888EZK15-T?
MAX8888EZK15-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8888EZK15-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 MAX8888EZK15-T?
For technical support, including MAX8888EZK15-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8888EZK15-T requirements.
6.How does Aetrix verify that MAX8888EZK15-T is sourced from the original manufacturer or authorized distributors?
All MAX8888EZK15-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 MAX8888EZK15-T meets industry standards.
7.What is the process for return or replacement of MAX8888EZK15-T?
All MAX8888EZK15-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8888EZK15-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 MAX8888EZK15-T part is unused and in its original packaging.
Return procedure for MAX8888EZK15-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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