My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8887EZK25
- Part No.:
- MAX8887EZK25
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8887EZK25.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:1,656
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX8887EZK25 from Maxim Integrated is a low-noise, 2.5V fixed-output, 300mA low-dropout linear regulator with 100mV dropout at 200mA, 42µVRMS output noise, 55µA no-load supply current, and thermal/short-circuit protection - designed for powering core logic rails in battery-powered portable electronics.
For engineers reviewing the MAX8887EZK25 datasheet, MAX8887EZK25 pinout, MAX8887EZK25 application, or MAX8887EZK25 equivalent, this page delivers verified electrical specs, SOT23-5 pin mapping, real-world use cases in handheld instruments and digital cameras, and two validated alternative regulators with documented functional trade-offs.
Technical Context
The MAX8887EZK25 uses an internal P-channel MOSFET pass transistor (RDS(ON) ≈ 0.5Ω) to achieve ultra-low quiescent current independent of load - enabling stable regulation even during deep discharge of Li-ion or alkaline cells. Its 1.25V internal reference and error amplifier maintain ±2% output accuracy over temperature and load.
Noise performance is enhanced by the BP (bypass) pin, which accepts a 0.01µF ceramic capacitor to form a low-pass filter; this configuration reduces output noise to 42µVRMS (10Hz–100kHz), making it suitable for noise-sensitive analog and RF circuitry powered from the same rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% - factory-trimmed for precision without external feedback components. |
| Max Continuous Output Current | 300mA - sufficient to power microcontroller cores, ADCs, or small displays without derating at +85°C. |
| Dropout Voltage | 100mV at 200mA - enables operation down to VIN = 2.6V, extending usable battery life in single-cell systems. |
| Output Noise | 42µVRMS (10Hz–100kHz) - low enough to avoid degrading SNR in 12-bit+ data converters or VCO biasing. |
| No-Load Supply Current | 55µA - remains constant across load, minimizing standby drain in always-on subsystems. |
| PSRR | 60dB at 1kHz - suppresses ripple from switching DC/DC stages upstream, reducing need for additional filtering. |
| Shutdown Current | 0.1µA - ensures negligible battery leakage during system sleep modes. |
Pinout & Package
MAX8887EZK25 is housed in a thin 5-pin SOT23 package (1mm height), optimized for space-constrained portable PCBs. Pin assignments are identical to the MAX8887 family and validated per Maxim's official pin diagram.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input voltage supply | 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 noise filtering; must be connected directly to PCB ground plane. |
| 3 - SHDN | Active-low shutdown control | Pulling low disables output and reduces supply current to 0.1µA; tied to IN for always-on operation. |
| 4 - BP | Reference bypass terminal | Connects 0.01µF ceramic capacitor to reduce reference noise - essential for achieving 42µVRMS output noise. |
| 5 - OUT | Regulated output | Delivers up to 300mA at 2.5V; requires 2.2µF ceramic capacitor (ESR < 0.1Ω) to GND for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise architecture | 42µVRMS output noise enabled by dedicated BP pin and 0.01µF bypass - critical for analog sensor signal chains. |
| P-channel MOSFET pass element | Eliminates base-drive current loss; maintains 55µA quiescent current even at full 300mA load and in dropout. |
| Foldback current limiting | Reduces output current to ~500mA pulsed (or lower under fault) when VOUT drops below 93% of nominal - protects against short circuits. |
| Thermal shutdown with hysteresis | Turns off at +170°C junction temp and re-enables after cooling by 20°C - prevents latch-up during sustained overload. |
| High PSRR at low frequency | 60dB rejection at 1kHz - effectively filters switching noise from upstream DC/DC converters feeding the LDO input. |
Applications
| Digital Cameras | Hand-Held Instruments |
|---|---|
Use Scenario: Powering image sensor bias rails and analog front-end circuitry in compact digital still/video cameras. IC Role / Device Role / Timing Role: Low-noise 2.5V LDO supplying clean power to CMOS image sensors and correlated double samplers. Use Value: 42µVRMS noise prevents fixed-pattern noise and SNR degradation in high-resolution imaging paths. |
Use Scenario: Regulating power for precision ADCs, op-amps, and microcontroller peripherals in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Stable 2.5V reference-grade supply for 16-bit SAR ADCs and low-drift instrumentation amplifiers. Use Value: ±2% output accuracy and 60dB PSRR ensure measurement repeatability across battery voltage range and EMI environments. |
| PCMCIA Cards | Wireless Handsets |
Use Scenario: Providing regulated 2.5V to interface logic and flash memory controllers in PC Card (PCMCIA) peripheral modules. IC Role / Device Role / Timing Role: Compact, low-quiescent LDO enabling hot-swap compliance and fast power-up sequencing. Use Value: 55µA no-load current and 0.1µA shutdown current minimize standby drain in removable card applications. |
Use Scenario: Supplying 2.5V to baseband processor I/O banks and RF transceiver bias circuits in GSM/EDGE handsets. IC Role / Device Role / Timing Role: Primary LDO for noise-sensitive RF sections where switching regulator ripple must be suppressed. Use Value: 100mV dropout extends talk time by allowing operation until battery reaches 2.6V, delaying system brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS78225DRVT | 2.5V fixed, 150mA max, 175mV dropout at 150mA, 30µVRMS noise, 1.3µA IQ | Lower output current and higher dropout limit its use to ultra-low-power MCU peripherals - not suitable for 300mA loads like image sensors. | Select only if system load ≤150mA and lowest possible quiescent current (1.3µA) is prioritized over output drive capability. |
| MCP1702T-2502E/MB | 2.5V fixed, 250mA max, 600mV dropout at 250mA, 30µVRMS noise, 4µA IQ | Higher dropout and lower current rating restrict use to non-critical, low-power rails - cannot replace MAX8887EZK25 in dropout-sensitive designs. | Consider only for cost-sensitive, low-current applications where 2.6V minimum input is acceptable and thermal margin is ample. |
Compared with TPS78225DRVT and MCP1702T-2502E/MB, the MAX8887EZK25 uniquely balances 300mA drive, 100mV dropout, and 42µVRMS noise - making it irreplaceable in portable imaging and precision analog subsystems requiring simultaneous high current, low dropout, and low noise.
Availability
MAX8887EZK25 is available at Aetrix Electronics and suitable for digital cameras, handheld instruments, PCMCIA cards, and wireless handsets requiring stable component supply, long-term lifecycle support, and guaranteed lead-free compliance.
Supply support for MAX8887EZK25 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX8887 series belongs to Maxim's precision low-noise LDO portfolio, engineered specifically for battery-powered portable devices where ultra-low quiescent current, low dropout, and minimal output noise are mandatory design requirements.
FAQ
What is the exact output voltage tolerance of the MAX8887EZK25 over temperature and load?
The MAX8887EZK25 guarantees ±2% output voltage accuracy across the full operating temperature range (−40°C to +85°C) and load current range (100µA to 300mA). At +25°C and 100mA load, typical deviation is ±1.2%. This tight tolerance eliminates need for post-regulation trimming in most portable applications.
Does the MAX8887EZK25 include a power-good (POK) output?
No, the MAX8887EZK25 does not include a POK output. That feature is exclusive to the MAX8888 variant (e.g., MAX8888EZK25). The MAX8887EZK25 is the low-noise version without POK; its pin 4 is BP (bypass), not POK. Confusing these variants may result in incorrect circuit implementation.
What capacitor values and types are required for stable operation of the MAX8887EZK25?
The MAX8887EZK25 requires a 2.2µF ceramic capacitor (ESR < 0.1Ω) between OUT and GND, a 2.2µF ceramic capacitor between IN and GND, and a 0.01µF ceramic capacitor between BP and GND. All capacitors must be placed as close as possible to their respective pins to ensure stability, low noise, and optimal transient response.
Can the MAX8887EZK25 operate from a single alkaline cell?
No - the MAX8887EZK25 requires a minimum input voltage of 2.5V, while a fresh alkaline cell starts at ~1.6V and drops rapidly. It is compatible with single Li-ion (3.0–4.2V), Li-polymer, or two NiMH/NiCd cells (2.4–3.0V), but not with one alkaline or zinc-carbon cell.
How does the MAX8887EZK25 achieve low noise without using an external reference?
The MAX8887EZK25 integrates a precision 1.25V bandgap reference and uses the BP pin to accept an external 0.01µF capacitor that filters reference noise. This on-chip reference + external BP bypass achieves 42µVRMS output noise - eliminating need for external references while maintaining low component count and board area.
MAX8887EZK25 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- 65 µA
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable
- 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
MAX8887EZK25 FAQ
1.How can I place an order for MAX8887EZK25 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8887EZK25 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 MAX8887EZK25 reliable?
The price and inventory of MAX8887EZK25 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8887EZK25 is usually 5 days.
3.What payment methods are accepted for MAX8887EZK25?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8887EZK25 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8887EZK25?
MAX8887EZK25 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8887EZK25 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 MAX8887EZK25?
For technical support, including MAX8887EZK25 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8887EZK25 requirements.
6.How does Aetrix verify that MAX8887EZK25 is sourced from the original manufacturer or authorized distributors?
All MAX8887EZK25 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 MAX8887EZK25 meets industry standards.
7.What is the process for return or replacement of MAX8887EZK25?
All MAX8887EZK25 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8887EZK25, 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 MAX8887EZK25 part is unused and in its original packaging.
Return procedure for MAX8887EZK25:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8887EZK25 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 practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
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…
