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Analog Devices Inc./Maxim Integrated MAX8887EZK27+T
- Part No.:
- MAX8887EZK27+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8887EZK27+T.pdf
- Description:
- IC REG LIN 2.7V 300MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,455
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Product details
Overview
MAX8887EZK27+T from Maxim Integrated is a low-noise, 300mA low-dropout linear regulator with fixed 2.7V output, 100mV dropout at 200mA, 42µVRMS output noise, 55µA no-load supply current, and thermal/short-circuit protection - designed for powering noise-sensitive analog circuitry in portable battery-powered systems.
For engineers reviewing the MAX8887EZK27+T datasheet, MAX8887EZK27+T pinout, MAX8887EZK27+T application, or MAX8887EZK27+T equivalent, key selection criteria include output voltage accuracy (±2% over load/temperature), ultra-low quiescent current, BP-bypassed noise performance, SOT23-5 package constraints, and compatibility with 2.2µF ceramic input/output capacitors.
Technical Context
The MAX8887EZK27+T uses an internal p-channel MOSFET pass transistor with ~0.5Ω RDS(ON), enabling dropout voltage as low as 100mV at 200mA while maintaining 55µA ground current independent of load. Its reference bypass (BP) pin supports external 0.01µF capacitor filtering to achieve 42µVRMS integrated noise (10Hz–100kHz).
It features micropower shutdown (0.1µA), foldback current limiting (420mA typical at VOUT ≥93% nominal), and thermal shutdown at +170°C with 20°C hysteresis. Unlike PNP-based LDOs, it avoids base-drive current penalties in dropout, preserving efficiency across full load and input range (2.5V–5.5V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7V ±2% over load (100µA–300mA) and temperature (−40°C to +85°C) |
| Dropout Voltage | 100mV at 200mA load - enables regulation down to VIN = 2.8V, extending usable battery life |
| Output Noise | 42µVRMS (10Hz–100kHz, CBP = 0.01µF, COUT = 2.2µF) - suitable for RF, ADC, and precision analog rails |
| No-Load Supply Current | 55µA - remains constant regardless of load, optimizing standby power in portable devices |
| PSRR | 60dB at 1kHz - suppresses switching noise from upstream DC/DC converters |
| Shutdown Current | 0.1µA - reduces system leakage during deep sleep modes |
| Thermal Protection | Shuts down at +170°C junction temperature with 20°C hysteresis - prevents permanent damage under overload |
Pinout & Package
MAX8887EZK27+T is housed in a thin 5-pin SOT23 package (1mm height, Z5-1 footprint), RoHS-compliant and lead-free.
| 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 | Ground reference | Common return path for input, output, and internal circuitry; must be low-impedance |
| 3 - SHDN | Active-low enable control | Pull low to enter 0.1µA shutdown; pull high (≥1.6V) to operate; tolerates up to 6V regardless of VIN/VOUT |
| 4 - BP | Reference bypass node | Connects to internal bandgap reference; 0.01µF ceramic capacitor reduces output noise to 42µVRMS |
| 5 - OUT | Regulated output | Delivers up to 300mA; requires 2.2µF ceramic capacitor (ESR < 0.1Ω) to GND for stability and PSRR |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | 42µVRMS output noise enabled by BP pin and 0.01µF capacitor - critical for RF transceivers and high-resolution ADCs |
| P-channel pass transistor | 0.5Ω RDS(ON) eliminates base-drive current, sustaining 55µA quiescent current even at full 300mA load and in dropout |
| Foldback current limiting | Reduces current limit from 420mA to 500mA pulsed when VOUT drops below 93% - protects against sustained short circuits |
| Thermal shutdown with hysteresis | +170°C trip with +20°C cooldown gap - enables self-recovery during intermittent overload without latch-up |
| Ultra-thin SOT23 package | 1mm profile supports space-constrained PCB layouts in handheld and wearable electronics |
Applications
| Wireless Handsets | Digital Cameras |
|---|---|
|
Use Scenario: Powering RF front-end ICs and baseband processors during active transmission/reception cycles. IC Role / Device Role / Timing Role: Low-noise 2.7V bias rail for LNAs, mixers, and PLLs - minimizing phase noise and spurious emissions. Use Value: 42µVRMS noise and 60dB PSRR at 1kHz prevent AM-to-PM conversion and preserve EVM in LTE/Wi-Fi radios. |
Use Scenario: Supplying image sensor analog core and CCD/CMOS bias circuitry during exposure and readout. IC Role / Device Role / Timing Role: Stable 2.7V reference rail decoupled from noisy digital logic supplies via BP-filtered low-noise regulation. Use Value: Enables <1 LSB noise floor in 14-bit image sensors by suppressing supply-induced quantization error. |
| Notebook Computers | Hand-Held Instruments |
|
Use Scenario: Regulating auxiliary voltage for USB PHY, touch controller, or embedded security module in battery-only mode. IC Role / Device Role / Timing Role: Always-on 2.7V LDO supporting fast wake-from-sleep with sub-100µs startup and 0.1µA shutdown leakage. Use Value: Extends battery runtime by >12 hours in suspend mode due to 55µA no-load current and 0.1µA shutdown. |
Use Scenario: Providing precision analog supply for op-amp signal chains, ADC references, and sensor excitation in portable DMMs and oscilloscopes. IC Role / Device Role / Timing Role: Low-drift, low-noise 2.7V source replacing bulkier discrete regulators in compact test equipment. Use Value: ±2% output accuracy and <100mV dropout ensure stable operation down to 2.8V battery voltage, maximizing usable cell capacity. |
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 |
|---|---|---|---|
| Torex XC6206P272MR-G | 2.7V fixed output, 150mA max, 120mV dropout at 100mA, 60µA IQ, no BP pin | Lacks BP-based noise filtering; higher dropout limits usable battery range | Choose only if 150mA load and relaxed noise requirements suffice; not suitable for RF/analog-sensitive designs |
| Analog Devices ADP125ARZ-2.7-R7 | 2.7V fixed output, 500mA max, 135mV dropout at 300mA, 30µA IQ, no BP pin, 45µVRMS noise | Higher current capability but no dedicated noise-reduction bypass; slightly higher noise than MAX8887EZK27+T | Prefer when higher load current is required and BP-level noise suppression is unnecessary |
Compared with XC6206P272MR-G and ADP125ARZ-2.7-R7, the MAX8887EZK27+T uniquely delivers 300mA capability with 42µVRMS noise via BP pin - making it the only option among the three qualified for noise-critical RF and high-resolution analog subsystems.
Availability
MAX8887EZK27+T is available at Aetrix Electronics and suitable for notebook computers, wireless handsets, digital cameras, and hand-held instruments requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX8887EZK27+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 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 ultra-low-noise LDO family, engineered specifically for battery-powered portable electronics where supply noise, quiescent current, and physical size are critical constraints.
FAQ
What is the exact output voltage tolerance of the MAX8887EZK27+T over temperature and load?
The MAX8887EZK27+T guarantees ±2% output voltage accuracy across the full operating temperature range (−40°C to +85°C) and load current range (100µA to 300mA). This specification is confirmed in the Electrical Characteristics table under "Output Voltage Accuracy" with conditions explicitly stated for IOUT = 100µA to 300mA and TA = 0°C to +85°C. The MAX8887EZK27+T maintains this tolerance without requiring external feedback components, as its 2.7V output is factory-trimmed and internally set.
Does the MAX8887EZK27+T include a power-OK (POK) output?
No, the MAX8887EZK27+T does not include a power-OK output. The POK function is exclusive to the MAX8888 variant (e.g., MAX8888EZK27+T). The MAX8887EZK27+T pinout omits the POK terminal and instead features the BP (bypass) pin for noise reduction. Pin 4 on the MAX8887EZK27+T is BP, whereas pin 4 on the MAX8888 is POK - confirming functional differentiation between the two families.
What capacitor values are required for stable operation of the MAX8887EZK27+T?
The MAX8887EZK27+T requires a 2.2µF ceramic capacitor between IN and GND, and another 2.2µF ceramic capacitor between OUT and GND, both with ESR < 0.1Ω. Additionally, a 0.01µF ceramic capacitor must be placed between BP and GND to achieve the specified 42µVRMS output noise. These values are validated in the Applications Information section and Typical Operating Circuit diagram, and deviating from them risks instability or degraded noise/PSRR performance.
Can the MAX8887EZK27+T operate with input voltages below 2.5V?
No, the MAX8887EZK27+T has a minimum input voltage of 2.5V as specified in Absolute Maximum Ratings and Electrical Characteristics. Input undervoltage lockout activates below 2.15V (rising threshold), and operation below 2.5V violates the guaranteed parametric performance. At 2.7V output, the device requires at least 2.8V input to maintain regulation given its 100mV dropout at 200mA - so 2.5V input would place it well outside functional range.
Is the MAX8887EZK27+T RoHS-compliant and lead-free?
Yes, the MAX8887EZK27+T is RoHS-compliant and lead-free, as indicated by the "+T" suffix in the part number per Maxim's Ordering Information table. The "+" denotes a lead(Pb)-free RoHS-compliant package, and the device uses the Z5-1 (5-pin SOT23) package code documented in the Package Information section. This compliance is verified in the official Maxim datasheet revision 4 (July 2009).
MAX8887EZK27+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):
- 2.7V
- 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
MAX8887EZK27+T FAQ
1.How can I place an order for MAX8887EZK27+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8887EZK27+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 MAX8887EZK27+T reliable?
The price and inventory of MAX8887EZK27+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8887EZK27+T is usually 5 days.
3.What payment methods are accepted for MAX8887EZK27+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8887EZK27+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8887EZK27+T?
MAX8887EZK27+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8887EZK27+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 MAX8887EZK27+T?
For technical support, including MAX8887EZK27+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8887EZK27+T requirements.
6.How does Aetrix verify that MAX8887EZK27+T is sourced from the original manufacturer or authorized distributors?
All MAX8887EZK27+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 MAX8887EZK27+T meets industry standards.
7.What is the process for return or replacement of MAX8887EZK27+T?
All MAX8887EZK27+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8887EZK27+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 MAX8887EZK27+T part is unused and in its original packaging.
Return procedure for MAX8887EZK27+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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