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Analog Devices Inc./Maxim Integrated MAX8887EZK15+
- Part No.:
- MAX8887EZK15+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8887EZK15+.pdf
- Description:
- IC REG LIN 1.5V 300MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,240
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Product details
Overview
MAX8887EZK15+ from Maxim Integrated is a low-noise, 1.5V fixed-output, 300mA low-dropout linear regulator in SOT23-5 package, featuring 100mV dropout at 200mA, 42µVRMS output noise, and 55µA no-load supply current. It delivers stable power to noise-sensitive analog circuitry in portable battery-powered systems such as PDAs, cellular handsets, and digital cameras.
For engineers reviewing the MAX8887EZK15+ datasheet, MAX8887EZK15+ pinout, MAX8887EZK15+ application, or MAX8887EZK15+ equivalent, key selection criteria include guaranteed 300mA output under 2.5V–5.5V input, micropower shutdown (0.1µA), thermal/short-circuit protection, and compatibility with 2.2µF ceramic input/output capacitors for stability.
Technical Context
The MAX8887EZK15+ uses an internal p-channel MOSFET pass transistor with ~0.5Ω RDS(ON), enabling ultra-low quiescent current independent of load and eliminating base-drive losses typical of PNP-based LDOs. Its reference bypass (BP) pin supports external 0.01µF capacitor filtering to achieve 42µVRMS noise performance.
It operates across -40°C to +85°C with ±2% output voltage accuracy over full load (100µA–300mA) and temperature range, and includes foldback current limiting (420mA typical at VOUT > 93% nominal) and thermal shutdown at +170°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±2% over load and temperature - ensures precise biasing for 1.5V logic or analog rails without external feedback. |
| Max Output Current | 300mA continuous, 500mA pulsed - supports burst-mode loads like camera flash drivers or RF transceivers. |
| Dropout Voltage | 100mV at 200mA - enables operation down to VIN = 1.6V, extending usable battery life in single-cell Li-ion or alkaline systems. |
| Output Noise | 42µVRMS (10Hz–100kHz) with 0.01µF BP cap - meets low-noise requirements for ADC references, RF synthesizers, and precision sensors. |
| Quiescent Current | 55µA no-load, 0.1µA in shutdown - minimizes standby drain in always-on portable devices with long shelf life. |
| PSRR | 60dB at 1kHz - suppresses ripple from noisy DC-DC converters feeding the LDO input. |
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-ion (2.7–4.2V), LiFePO₄ (2.0–3.6V with margin), and 3.3V/5V system rails. |
Pinout & Package
MAX8887EZK15+ is housed in a RoHS-compliant, thin-profile 5-pin SOT23 package (1mm height), optimized for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Regulator input | Accepts 2.5V–5.5V supply; requires 2.2µF ceramic bypass to GND for stability and transient response. |
| 2 - GND | Ground reference | Low-impedance return path for all internal circuits; must be connected directly to system ground plane. |
| 3 - SHDN | Active-low enable | Pulled low to enter 0.1µA shutdown; pulled high (≥1.6V) to enable regulation; tolerates up to 6V regardless of VIN/VOUT. |
| 4 - BP | Reference bypass | Connects to 0.01µF low-leakage ceramic capacitor to reduce reference noise and achieve 42µVRMS output noise. |
| 5 - OUT | Regulated output | Delivers 1.5V ±2% at up to 300mA; requires 2.2µF ceramic capacitor (ESR < 0.1Ω) to GND for loop stability. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise architecture | 42µVRMS output noise with BP capacitor - enables clean power for RF front-ends and high-resolution data converters. |
| p-Channel MOSFET pass element | 0.5Ω RDS(ON), no base drive required - maintains 55µA quiescent current even at full 300mA load and in dropout. |
| Foldback current limiting | Reduces current limit to 420mA when VOUT drops below 93% of 1.5V - protects against sustained overload while preserving thermal margin. |
| Thermal shutdown with hysteresis | Triggers at +170°C junction temp, re-enables after cooling by 20°C - prevents latch-up during intermittent overloads. |
| Micropower shutdown | 0.1µA supply current in shutdown - eliminates battery drain in sleep modes of handheld instruments and wearables. |
Applications
| Portable Digital Cameras | Cellular Handsets |
|---|---|
|
Use Scenario: Powering image sensor analog front-end and ISP core voltage rail. IC Role / Device Role / Timing Role: Low-noise 1.5V LDO supplying critical analog blocks requiring minimal switching noise coupling. Use Value: 42µVRMS noise and 60dB PSRR at 1kHz prevent corruption of pixel data and reduce post-processing artifacts. |
Use Scenario: Biasing RF transceiver VCO and PLL supply domains. IC Role / Device Role / Timing Role: Clean, stable 1.5V source isolating sensitive RF circuitry from noisy baseband DC-DC outputs. Use Value: 100mV dropout allows operation down to 1.6V input, supporting extended battery runtime in deep discharge conditions. |
| PDAs and Palmtop Computers | Digital Audio Players |
|
Use Scenario: Regulating 1.5V core voltage for ARM9/ARM11 application processors. IC Role / Device Role / Timing Role: Primary LDO delivering processor I/O and memory interface voltage with fast load-transient response. Use Value: 300mA capability and 10µs load-step recovery (per toc11/toc12) maintain voltage within ±3% during CPU burst activity. |
Use Scenario: Supplying DAC and headphone amplifier analog sections. IC Role / Device Role / Timing Role: Ultra-low-noise 1.5V rail decoupling audio signal chain from digital subsystems. Use Value: BP-bypassed architecture achieves THD+N improvement vs. non-bypassed LDOs, directly enhancing audio fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, fixed-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A2015PDBVR | 1.5V fixed, 300mA, 65µVRMS noise, 160mV dropout at 300mA, 6.5µA IQ | Higher noise and dropout; lacks BP pin for noise optimization | Select when board space permits larger 1.5mm × 1.5mm X2SON package and noise sensitivity is moderate. |
| MCP1700T-1502E/TT | 1.5V fixed, 250mA, 30µVRMS noise (with 10nF CBP), 178mV dropout at 250mA, 1.6µA IQ | Lower max current, higher dropout, smaller 6µA shutdown current | Prefer for ultra-low-power sensor nodes where 250mA peak suffices and 1.6µA shutdown is critical. |
Compared with TPS7A2015PDBVR and MCP1700T-1502E/TT, the MAX8887EZK15+ uniquely combines 100mV dropout at 200mA, 42µVRMS noise via BP pin, and 55µA operating IQ - making it optimal for compact, noise-sensitive, battery-limited designs demanding both efficiency and signal integrity.
Availability
MAX8887EZK15+ is available at Aetrix Electronics and suitable for portable digital cameras, cellular handsets, and PDAs requiring stable component supply with guaranteed long-term manufacturability and RoHS-compliant packaging.
Supply support for MAX8887EZK15+ 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 industrial, communications, and consumer applications.
The MAX8887/MAX8888 series was designed specifically for battery-powered portable electronics needing ultra-low-noise, micropower LDO regulation with robust thermal and overload protection in minimal SOT23 footprint.
FAQ
What is the output voltage tolerance of the MAX8887EZK15+ over temperature and load?
The MAX8887EZK15+ 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, the tolerance tightens to ±1.2%. This specification ensures reliable operation of 1.5V logic and analog circuits without external trimming or calibration in portable equipment.
Does the MAX8887EZK15+ require an external capacitor on the BP pin, and why?
Yes, the MAX8887EZK15+ requires a 0.01µF low-leakage ceramic capacitor between the BP pin and GND to achieve its specified 42µVRMS output noise. The BP pin bypasses the internal reference, and omitting this capacitor increases output noise significantly - the MAX8887EZK15+ datasheet confirms noise rises to ~360µVRMS without BP bypass, matching the MAX8888's unfiltered performance.
Can the MAX8887EZK15+ be used with input voltages below 2.5V?
No, the MAX8887EZK15+ has a minimum input voltage of 2.5V per absolute maximum ratings and electrical characteristics tables. Input undervoltage lockout activates below ~2.4V (rising), disabling regulation. For sub-2.5V operation, consider alternatives like the MAX8526 (1.8V min IN) - the MAX8887EZK15+ is not rated or characterized for reliable function below 2.5V.
How does the MAX8887EZK15+ behave during thermal overload?
When the MAX8887EZK15+ junction temperature exceeds +170°C, its thermal shutdown circuit disables the pass transistor, dropping output voltage. After the die cools by 20°C (to ~150°C), regulation resumes automatically. This hysteresis prevents oscillation and provides pulsed output during sustained overload - a safety feature confirmed in the Thermal Protection section of the MAX8887EZK15+ datasheet.
Is the MAX8887EZK15+ pin-compatible with other MAX8887 variants like MAX8887EZK18+?
Yes, all MAX8887 EZK-x variants - including MAX8887EZK15+, MAX8887EZK18+, and MAX8887EZK33+ - share identical 5-pin SOT23 pinout, package dimensions, and electrical interface. Only the factory-set output voltage differs; no PCB layout change is needed when substituting between these fixed-output versions of the MAX8887EZK15+ family.
MAX8887EZK15+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- 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:
- 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
MAX8887EZK15+ FAQ
1.How can I place an order for MAX8887EZK15+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8887EZK15+ 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 MAX8887EZK15+ reliable?
The price and inventory of MAX8887EZK15+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8887EZK15+ is usually 5 days.
3.What payment methods are accepted for MAX8887EZK15+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8887EZK15+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8887EZK15+?
MAX8887EZK15+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8887EZK15+ 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 MAX8887EZK15+?
For technical support, including MAX8887EZK15+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8887EZK15+ requirements.
6.How does Aetrix verify that MAX8887EZK15+ is sourced from the original manufacturer or authorized distributors?
All MAX8887EZK15+ 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 MAX8887EZK15+ meets industry standards.
7.What is the process for return or replacement of MAX8887EZK15+?
All MAX8887EZK15+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8887EZK15+, 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 MAX8887EZK15+ part is unused and in its original packaging.
Return procedure for MAX8887EZK15+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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