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Analog Devices Inc./Maxim Integrated MAX8887EZK30-T
- Part No.:
- MAX8887EZK30-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8887EZK30-T.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
MAX8887EZK30-T from Maxim Integrated is a low-noise, 3.0V fixed-output, 300mA low-dropout linear regulator in SOT23-5 package, featuring 100mV dropout at 200mA, 42µVRMS output noise (with BP bypass), and 55µA no-load supply current. It delivers stable voltage to power-sensitive analog and RF circuitry in portable battery-powered systems such as cellular handsets and digital cameras.
For engineers reviewing the MAX8887EZK30-T datasheet, MAX8887EZK30-T pinout, MAX8887EZK30-T application, or MAX8887EZK30-T 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 MAX8887EZK30-T uses an internal p-channel MOSFET pass transistor (RDS(ON) ≈ 0.5Ω) to achieve low dropout and load-independent quiescent current. Its error amplifier compares the regulated 3.0V output against a 1.25V reference via internal feedback divider, enabling high DC accuracy (±2% over temperature).
Noise performance is enhanced by the BP (bypass) pin, which accepts a 0.01µF capacitor to filter reference noise-enabling 42µVRMS output noise (10Hz–100kHz). Unlike the MAX8888 variant, it omits the POK output, confirming its role as the low-noise, non-monitoring version of the family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±2% over -40°C to +85°C - ensures stable bias for 3.0V logic and analog ICs without external resistors. |
| Max Continuous Output Current | 300mA - sufficient to power baseband processors, camera sensors, or RF front-end ICs in handheld devices. |
| Dropout Voltage | 100mV at 200mA - enables operation down to VIN = 3.1V, extending usable battery life in single-cell Li-ion (2.8V–4.2V) systems. |
| Output Noise | 42µVRMS (10Hz–100kHz, with 0.01µF BP cap) - critical for powering PLLs, ADCs, or RF synthesizers requiring clean supply rails. |
| No-Load Supply Current | 55µA - remains constant regardless of load, optimizing standby power in always-on subsystems. |
| Shutdown Current | 0.1µA - allows deep-sleep modes in portable devices without compromising system-level energy budgets. |
| PSRR | 60dB at 1kHz - suppresses switching noise from adjacent DC/DC converters feeding shared input rails. |
Pinout & Package
MAX8887EZK30-T is housed in a thin 5-pin SOT23 package (1mm height), RoHS-compliant, with standard land pattern per Maxim document 21-0113 (Z5-1).
| 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; must be connected directly to PCB ground plane with minimal trace length. |
| 3 SHDN | Active-low enable control | Pulled low to reduce supply current to 0.1µA; tied to IN for always-on operation; tolerates up to 6V. |
| 4 BP | Reference bypass node | Connects 0.01µF low-leakage ceramic capacitor to reduce reference noise and achieve 42µVRMS output noise. |
| 5 OUT | Regulated 3.0V output | Sources up to 300mA; requires 2.2µF ceramic capacitor (ESR < 0.1Ω) to GND for loop stability and load transient immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise architecture | 42µVRMS output noise enabled by dedicated BP pin and 0.01µF capacitor - meets stringent requirements for RF and precision analog circuits. |
| p-Channel MOSFET pass element | 0.5Ω RDS(ON) eliminates base-drive current loss - maintains 55µA quiescent current even at full 300mA load and in dropout. |
| Foldback current limiting | Reduces current limit to 500mA (pulsed) when VOUT drops below 93% of 3.0V - protects downstream loads during short-circuit or brownout events. |
| Thermal shutdown with hysteresis | Triggers at +170°C junction temperature and resets after 20°C cooldown - prevents latch-up during sustained overload without manual reset. |
| Stable with low-ESR ceramics | Designed for 2.2µF output capacitor with ESR ≤ 0.1Ω - compatible with widely available X5R/X7R MLCCs, eliminating need for tantalum or polymer alternatives. |
Applications
| Cellular Handsets | Digital Cameras |
|---|---|
Use Scenario: Powering RF transceiver LDO rails and baseband processor I/O banks in dual-SIM smartphones. IC Role / Device Role / Timing Role: Primary 3.0V analog supply regulator delivering low-noise, fast-transient power to sensitive RF sections. Use Value: 42µVRMS noise and 60dB PSRR at 1kHz prevent AM modulation of RF carriers; 100mV dropout extends talk time by ~12 minutes on single-cell Li-ion discharge curve. |
Use Scenario: Supplying image sensor analog core and ADC reference in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: Low-noise 3.0V bias source ensuring < 0.5 LSB noise floor in 12-bit image digitization. Use Value: BP-bypassed 42µVRMS noise avoids fixed-pattern noise in captured images; 300mA capacity supports burst-mode sensor readout without droop. |
| PDAs and Palmtop Computers | PCMCIA Cards |
Use Scenario: Regulating 3.0V for touch controller, flash memory interface, and audio codec in legacy handheld PDAs. IC Role / Device Role / Timing Role: Main system LDO supplying multiple low-power peripherals from shared Li-ion battery rail. Use Value: 55µA quiescent current minimizes battery drain during suspend; 0.1µA shutdown enables multi-week shelf life in storage mode. |
Use Scenario: Providing isolated 3.0V supply for PCMCIA card controllers and SRAM buffers in industrial data-acquisition modules. IC Role / Device Role / Timing Role: Compact, thermally robust LDO meeting PCMCIA Type II mechanical envelope constraints (1mm height). Use Value: SOT23-5 footprint and 1mm profile allow placement beneath card edge connector; thermal shutdown protects against hot-plug insertion faults. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76330DBVR | Higher 250mV dropout at 200mA; 120µA IQ; no BP pin for noise filtering | Lacks low-noise optimization - unsuitable for RF or high-resolution ADC supplies | Select only if board space allows larger solution size and noise sensitivity is low |
| MCP1700T-3002E/MB | 250mA max output; 175mV dropout; 1.6µA IQ but no thermal shutdown or foldback current limit | Lower current rating and missing fault protections limit use to ultra-low-power microcontrollers only | Prefer for sub-100mA sensor nodes where thermal safety is externally managed |
Compared with TPS76330DBVR and MCP1700T-3002E/MB, the MAX8887EZK30-T uniquely combines 300mA output, 100mV dropout, 42µVRMS noise, and full fault protection in a 1mm-height SOT23 - making it the only option meeting simultaneous low-noise, high-current, and safety-critical requirements in space-constrained portable designs.
Availability
MAX8887EZK30-T is available at Aetrix Electronics and suitable for cellular handsets, digital cameras, PDAs, PCMCIA cards, and hand-held instruments requiring stable component supply across extended production lifecycles.
Supply support for MAX8887EZK30-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/MAX8888 product line was designed specifically for battery-powered portable electronics demanding ultra-low quiescent current, low noise, and small footprint - targeting applications where runtime, signal integrity, and board area are critical constraints.
FAQ
What is the output voltage tolerance of the MAX8887EZK30-T over temperature and load?
The MAX8887EZK30-T guarantees ±2% output voltage accuracy over load current (100µA to 300mA) and temperature (-40°C to +85°C), and ±3% over the full operating range including input voltage variation. This is confirmed in the Electrical Characteristics table under "Output Voltage Accuracy" with test conditions explicitly referencing IOUT = 100µA to 300mA and TA = 0°C to +85°C. The MAX8887EZK30-T achieves this via laser-trimmed internal feedback resistors and a stable 1.25V bandgap reference.
Does the MAX8887EZK30-T include power-good (POK) functionality?
No, the MAX8887EZK30-T does not include a power-good (POK) output. The POK feature is exclusive to the MAX8888 series (e.g., MAX8888EZK30-T); the MAX8887EZK30-T is the low-noise variant without monitoring capability. Pin 4 on the MAX8887EZK30-T is BP (bypass), not POK - confirmed by the Pin Configurations diagram and Pin Description table in the datasheet, which assign POK only to MAX8888 pin 4 and BP to MAX8887 pin 4.
What capacitor values and types are required for stable operation of the MAX8887EZK30-T?
The MAX8887EZK30-T requires a 2.2µF ceramic capacitor (X5R/X7R, ESR < 0.1Ω) between OUT and GND, and a 2.2µF ceramic capacitor between IN and GND. Additionally, a 0.01µF ceramic capacitor must be placed between BP and GND to achieve specified 42µVRMS noise performance. All capacitors must be placed as close as possible to their respective pins to minimize trace inductance - per the "Capacitor Selection and Regulator Stability" section of the datasheet.
How does the MAX8887EZK30-T behave during thermal overload?
When the MAX8887EZK30-T junction temperature exceeds +170°C, its internal thermal sensor disables the p-channel pass transistor, causing output voltage to collapse. After the die cools by 20°C (to ~+150°C), the device automatically resumes regulation - resulting in pulsed output during continuous overload. This hysteresis prevents oscillation and provides self-recovery without external intervention, as documented in the "Thermal Overload Protection" section and Electrical Characteristics table.
Is the MAX8887EZK30-T pin-compatible with other variants in the MAX8887/MAX8888 family?
Yes, the MAX8887EZK30-T shares identical pinout and SOT23-5 package with all MAX8887 and MAX8888 variants (e.g., MAX8887EZK18-T, MAX8888EZK33-T), as confirmed by the "Pin Configurations" diagrams showing identical top-view layouts for MAX8887 and MAX8888. However, pin functions differ: MAX8887 pin 4 is BP, while MAX8888 pin 4 is POK - so direct substitution requires verifying BP/POK circuitry compatibility.
MAX8887EZK30-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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- Control Features:
- Current Limit, 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
MAX8887EZK30-T FAQ
1.How can I place an order for MAX8887EZK30-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8887EZK30-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 MAX8887EZK30-T reliable?
The price and inventory of MAX8887EZK30-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8887EZK30-T is usually 5 days.
3.What payment methods are accepted for MAX8887EZK30-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8887EZK30-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8887EZK30-T?
MAX8887EZK30-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8887EZK30-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 MAX8887EZK30-T?
For technical support, including MAX8887EZK30-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8887EZK30-T requirements.
6.How does Aetrix verify that MAX8887EZK30-T is sourced from the original manufacturer or authorized distributors?
All MAX8887EZK30-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 MAX8887EZK30-T meets industry standards.
7.What is the process for return or replacement of MAX8887EZK30-T?
All MAX8887EZK30-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8887EZK30-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 MAX8887EZK30-T part is unused and in its original packaging.
Return procedure for MAX8887EZK30-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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