My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8888EZK25T+T
- Part No.:
- MAX8888EZK25T+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8888EZK25T+T.pdf
- Description:
- IC REG LIN 2.5V 300MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,802
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX8888EZK25T+T from Maxim Integrated is a low-dropout linear regulator delivering up to 300mA continuous output current with 100mV dropout at 200mA, 2.5V nominal output voltage, and integrated open-drain power-OK (POK) flag - designed for battery-powered portable electronics requiring precise voltage regulation and system power monitoring.
For engineers reviewing the MAX8888EZK25T+T datasheet, MAX8888EZK25T+T pinout, MAX8888EZK25T+T application, or MAX8888EZK25T+T equivalent, key selection criteria include guaranteed 300mA load capability, POK functionality for microcontroller reset sequencing, 55µA no-load quiescent current, and SOT23-5 package compatibility in space-constrained designs.
Technical Context
The MAX8888EZK25T+T employs an internal p-channel MOSFET pass transistor (RDS(ON) ≈ 0.5Ω), enabling low dropout and load-independent 55µA quiescent current. Its error amplifier compares feedback from an internal 1.25V reference and fixed resistor divider to maintain 2.5V output regulation.
It integrates thermal shutdown (170°C trip, 20°C hysteresis), foldback current limiting (420mA typical at VOUT ≥ 93% of nominal), and active-low open-drain POK that asserts when VOUT falls below 92.5% of 2.5V - all operating across -40°C to +85°C with input range 2.5V–5.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5V ±3% over temperature and load - ensures stable core logic supply for 2.5V I/O domains. |
| Max Output Current | 300mA continuous - sufficient for powering baseband processors or RF front-end ICs in handheld devices. |
| Dropout Voltage | 100mV at 200mA - enables operation down to 2.6V input, extending usable battery life in single-cell Li-ion systems. |
| Quiescent Current | 55µA at no load - minimizes standby power loss in always-on subsystems like real-time clocks or sensors. |
| POK Threshold | 92.5% of nominal (2.3125V) with 1% hysteresis - provides clean, glitch-free power-good assertion for µC reset timing. |
| PSRR | 40dB at 1kHz - suppresses switching noise from adjacent DC/DC converters feeding shared input rails. |
| Shutdown Current | 0.1µA - reduces system leakage during deep sleep modes without external discharge circuitry. |
Pinout & Package
MAX8888EZK25T+T is housed in a RoHS-compliant, thin-profile 5-pin SOT23 package (1mm height), optimized for high-density portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input Supply | Accepts 2.5V–5.5V; requires 2.2µF ceramic bypass to GND for stability and transient response. |
| 2 GND | Ground Reference | Common return path for input, output, and internal circuitry; must be low-impedance connection. |
| 3 SHDN | Active-Low Enable | Pulled low to disable regulator; draws <100nA bias current; tolerates up to 6V regardless of VIN/VOUT. |
| 4 POK | Open-Drain Power-OK Flag | Asserts low when VOUT < 2.3125V; requires external 100kΩ pullup to OUT for logic-level signaling. |
| 5 OUT | Regulated Output | Delivers 2.5V ±3%; bypassed with 2.2µF ceramic capacitor (ESR < 0.1Ω) to GND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated POK output | Enables reliable power-on-reset sequencing for microcontrollers without external supervisor ICs. |
| Thermal shutdown with hysteresis | 170°C trip / 150°C recovery prevents latch-up during sustained overload or poor heatsinking. |
| Foldback current limiting | Reduces short-circuit current to ~500mA when VOUT drops below 93%, lowering fault power dissipation. |
| Low-noise design (vs. MAX8887) | 360µVRMS output noise (10Hz–100kHz) - suitable for analog sensor supplies where ultra-low noise isn't critical. |
| SOT23-5 footprint | Standardized 5-pin layout compatible with automated assembly and reflow processes; 1mm profile saves vertical space. |
Applications
| Wireless Handsets | Notebook Computers |
|---|---|
Use Scenario: Powering RF transceiver bias circuits and baseband processor I/O rails in dual-mode GSM/UMTS handsets. IC Role / Device Role / Timing Role: Primary 2.5V LDO supplying noise-sensitive analog sections while providing POK confirmation to application processor. Use Value: 100mV dropout extends talk time by enabling regulation until battery reaches 2.6V; POK eliminates need for discrete reset IC. |
Use Scenario: Supplying 2.5V auxiliary rails for USB controller, card reader, or embedded controller (EC) in ultraportable notebooks. IC Role / Device Role / Timing Role: Secondary LDO with enable control and power-good signaling for subsystem power sequencing. Use Value: 55µA quiescent current minimizes battery drain during suspend-to-RAM; SOT23-5 fits tight BGA escape routing zones. |
| Digital Cameras | Hand-Held Instruments |
Use Scenario: Regulating image sensor interface voltage and LCD driver logic in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: Fixed-output LDO with fast load-transient response to handle burst-mode sensor readout currents. Use Value: 300mA rating supports peak sensor loads; thermal protection prevents damage during extended video capture. |
Use Scenario: Providing stable 2.5V supply to precision ADC reference buffers and microcontroller peripherals in portable multimeters. IC Role / Device Role / Timing Role: Low-drift, low-noise LDO ensuring measurement accuracy under varying battery conditions. Use Value: ±3% output accuracy maintained over -40°C to +85°C ensures calibration integrity; shutdown mode enables button-activated wake-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P252MR | 2.5V fixed, 300mA, no POK output; 150mV dropout at 100mA; 1µA shutdown current | Lacks power-good signaling - requires external supervisor for reset generation | Select when POK is unnecessary and lowest possible shutdown current is prioritized |
| Diodes Inc. AP2112K-2.5TRG1 | 2.5V fixed, 600mA, no POK; 350mV dropout at 300mA; 60µA quiescent current | Higher dropout limits usable battery range; higher current rating suits heavier loads | Select when higher output current is needed and POK functionality is handled elsewhere in system |
Compared with MAX8888EZK25T+T, the XC6206P252MR offers lower shutdown current but omits POK, while the AP2112K-2.5TRG1 delivers double the current capacity at the cost of reduced efficiency near battery end-of-life due to higher dropout.
Availability
MAX8888EZK25T+T is available at Aetrix Electronics and suitable for wireless handsets, notebook computers, and digital cameras requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX8888EZK25T+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, mixed-signal, and power management ICs for demanding industrial, communications, and consumer applications.
The MAX8887/MAX8888 product line delivers ultra-low-quiescent-current LDOs with integrated power monitoring for portable battery-powered systems - emphasizing efficiency, small size, and system-level integration.
FAQ
What is the output voltage tolerance of the MAX8888EZK25T+T over temperature and load?
The MAX8888EZK25T+T guarantees ±3% output voltage accuracy across the full -40°C to +85°C operating temperature range and for load currents from 100µA to 300mA. This specification ensures reliable operation of 2.5V logic interfaces even under worst-case thermal and loading conditions, as confirmed in the Electrical Characteristics table of the official datasheet.
Does the MAX8888EZK25T+T require an external bypass capacitor on the BP pin?
No - the BP (bypass) pin is specific to the MAX8887 variant for noise reduction and is not present on the MAX8888EZK25T+. The MAX8888EZK25T+T uses a different internal architecture without BP functionality; its pin 4 is POK, not BP. Therefore, no capacitor is connected to pin 4 of the MAX8888EZK25T+T.
What is the minimum input voltage required for regulation at full 300mA load?
At 300mA load, the MAX8888EZK25T+T exhibits a maximum dropout voltage of 150mV (per Electrical Characteristics table). To maintain 2.5V output regulation, the minimum input voltage is therefore 2.5V + 0.15V = 2.65V. This allows operation down to near-end-of-discharge for single-cell Li-ion batteries.
How does the POK output behave during shutdown of the MAX8888EZK25T+T?
When SHDN is pulled low, the MAX8888EZK25T+T enters shutdown mode and actively drives both OUT and POK low. The POK pin remains low regardless of output voltage level during shutdown - this behavior is explicitly defined in the Pin Description and Detailed Description sections of the datasheet to ensure deterministic reset signaling.
Can the MAX8888EZK25T+T be used with ceramic output capacitors having ESR above 0.1Ω?
No - the MAX8888EZK25T+T requires an output capacitor with ESR ≤ 0.1Ω (typically a 2.2µF X5R/X7R ceramic) to ensure loop stability and optimal transient response. Higher-ESR capacitors (e.g., tantalum or aluminum electrolytic) may cause oscillation or excessive overshoot, as specified in the Applications Information section on capacitor selection.
MAX8888EZK25T+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- 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
MAX8888EZK25T+T FAQ
1.How can I place an order for MAX8888EZK25T+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8888EZK25T+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 MAX8888EZK25T+T reliable?
The price and inventory of MAX8888EZK25T+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8888EZK25T+T is usually 5 days.
3.What payment methods are accepted for MAX8888EZK25T+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8888EZK25T+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8888EZK25T+T?
MAX8888EZK25T+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8888EZK25T+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 MAX8888EZK25T+T?
For technical support, including MAX8888EZK25T+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8888EZK25T+T requirements.
6.How does Aetrix verify that MAX8888EZK25T+T is sourced from the original manufacturer or authorized distributors?
All MAX8888EZK25T+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 MAX8888EZK25T+T meets industry standards.
7.What is the process for return or replacement of MAX8888EZK25T+T?
All MAX8888EZK25T+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8888EZK25T+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 MAX8888EZK25T+T part is unused and in its original packaging.
Return procedure for MAX8888EZK25T+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8888EZK25T+T Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
