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Analog Devices Inc./Maxim Integrated MAX8887EZK33+T
- Part No.:
- MAX8887EZK33+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8887EZK33+T.pdf
- Description:
- IC REG LIN 3.3V 300MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:34,022
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Product details
Overview
MAX8887EZK33+T from Maxim Integrated is a low-noise, 3.3V 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-designed for power-sensitive portable applications including cellular phones and PDAs.
For engineers reviewing the MAX8887EZK33+T datasheet, MAX8887EZK33+T pinout, MAX8887EZK33+T application, or MAX8887EZK33+T equivalent, key selection criteria include guaranteed 3.3V output accuracy (±3%), thermal/short-circuit protection, micropower shutdown (0.1µA), and compatibility with 2.2µF ceramic input/output capacitors in space-constrained battery-powered designs.
Technical Context
The MAX8887EZK33+T 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 regulators. Its BP pin supports external 0.01µF bypass capacitor to suppress reference noise.
It operates across 2.5V–5.5V input range with undervoltage lockout (2.15V–2.4V) and delivers stable 3.3V output with ±2% accuracy over 0°C to +85°C and ±3% over full -40°C to +85°C range. Output voltage is factory-preset-no external resistors required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±3% over -40°C to +85°C - eliminates need for external feedback network and ensures compatibility with 3.3V logic rails. |
| Max Continuous Output Current | 300mA - sufficient to power core logic, RF transceivers, or small microcontrollers in handheld devices. |
| Dropout Voltage | 100mV at 200mA load - enables operation down to ~3.4V input when VOUT = 3.3V, extending usable battery life in Li-ion and Li-poly systems. |
| Output Noise | 42µVRMS (10Hz–100kHz, with 0.01µF BP cap) - critical for noise-sensitive analog circuits like ADCs, RF front-ends, and audio codecs. |
| No-Load Supply Current | 55µA - remains constant regardless of load, optimizing standby power in always-on subsystems. |
| Shutdown Current | 0.1µA - reduces system-level leakage during deep sleep modes without requiring additional power gating. |
| PSRR | 60dB at 1kHz - suppresses ripple from noisy switchers or shared DC-DC supplies feeding mixed-signal SoCs. |
Pinout & Package
MAX8887EZK33+T is housed in a thin 5-pin SOT23 package (1mm height), RoHS-compliant and optimized for high-density portable PCB layouts.
| 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 for regulator and bypass capacitors; must be connected directly to system ground plane. |
| 3 - SHDN | Active-low enable control | Pulled low to enter 0.1µA shutdown; internally pulled up to IN; tolerates up to 6V regardless of VIN/VOUT. |
| 4 - BP | Reference bypass terminal | Connects 0.01µF low-leakage ceramic capacitor to reduce internal reference noise-enables 42µVRMS output noise spec. |
| 5 - OUT | Regulated 3.3V output | Sources up to 300mA; requires 2.2µF ceramic capacitor (ESR < 0.1Ω) to GND for stability and low-noise performance. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise architecture | 42µVRMS output noise with BP pin filtering-supports precision analog signal chains without external LDO post-regulation. |
| p-Channel MOSFET pass element | 0.5Ω RDS(ON) enables 55µA quiescent current independent of load-ideal for battery runtime optimization. |
| Foldback current limiting | Reduces short-circuit current to 500mA (pulsed) or 300mA (continuous) while maintaining safe junction temperature. |
| Thermal shutdown with hysteresis | Triggers at 170°C and re-enables only after 20°C cooldown-prevents latch-up during sustained overload or poor heatsinking. |
| Undervoltage lockout (UVLO) | Activates below 2.15V input-blocks regulator startup until battery reaches minimum viable voltage, preventing brownout operation. |
Applications
| Cellular Handsets | Digital Cameras |
|---|---|
|
Use Scenario: Powering baseband processor I/O banks and camera sensor interface circuitry in dual-mode GSM/UMTS handsets. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying noise-sensitive digital interfaces and memory peripherals. Use Value: 42µVRMS noise and 60dB PSRR prevent bit errors in high-speed SDIO and MIPI CSI-2 links under dynamic RF load conditions. |
Use Scenario: Providing clean 3.3V bias to CMOS image sensors and auto-focus drivers in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: Low-noise, fast-transient-response power source for pixel readout and analog front-end stages. Use Value: 100mV dropout allows operation down to 3.4V input-extending usable battery capacity from partially discharged Li-ion cells. |
| Notebook Subsystems | Hand-Held Instruments |
|
Use Scenario: Powering embedded controller (EC) and keyboard controller in ultraportable notebooks with constrained thermal envelope. IC Role / Device Role / Timing Role: Standby rail regulator enabling <1µA system sleep current via 0.1µA shutdown mode. Use Value: Micropower shutdown and thermal protection ensure reliable operation in sealed chassis with limited airflow. |
Use Scenario: Supplying 3.3V to precision ADCs, op-amps, and display drivers in battery-operated multimeters and data loggers. IC Role / Device Role / Timing Role: Precision voltage reference source with tight ±3% output tolerance over industrial temperature range. Use Value: Guaranteed accuracy and low drift support sub-0.1% measurement repeatability without calibration compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P332MR | 300mA, 3.3V, 150mV dropout at 200mA, 12µA IQ, no BP pin or noise-specification | Lacks BP pin and low-noise capability; suitable only where noise <100µVRMS is acceptable | Select when lowest quiescent current is prioritized over noise performance and board area is extremely constrained. |
| Diodes Inc. AP2303-33W5-7 | 300mA, 3.3V, 250mV dropout at 300mA, 65µA IQ, no POK or BP, ±2% initial accuracy | Higher dropout limits usable input range; no BP pin disables low-noise mode | Choose for cost-sensitive consumer applications where 3.3V rail noise immunity is not critical. |
Compared with XC6206P332MR and AP2303-33W5-7, the MAX8887EZK33+T uniquely delivers 42µVRMS noise with BP filtering and 100mV dropout-making it the only option among the three qualified for noise-sensitive RF and precision analog subsystems in portable equipment.
Availability
MAX8887EZK33+T is available at Aetrix Electronics and suitable for notebook computers, wireless handsets, PDAs, digital cameras, and hand-held instruments requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX8887EZK33+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 markets.
The MAX8887 series belongs to Maxim's ultra-low-noise LDO portfolio, engineered specifically for battery-powered portable electronics demanding high PSRR, minimal dropout, and micropower shutdown without sacrificing output accuracy or transient response.
FAQ
What is the output voltage tolerance of the MAX8887EZK33+T over temperature?
The MAX8887EZK33+T guarantees ±3% output voltage accuracy over the full operating temperature range of -40°C to +85°C. At +25°C, the tighter specification is ±1.2%, and over 0°C to +85°C it is ±2%. This tolerance ensures reliable interfacing with 3.3V logic families and ADC reference inputs without external trimming. The MAX8887EZK33+T achieves this via laser-trimmed internal feedback resistors and a stable 1.25V bandgap reference.
Does the MAX8887EZK33+T require an external capacitor on the BP pin?
Yes-the MAX8887EZK33+T requires a 0.01µF low-leakage ceramic capacitor between the BP pin and GND to achieve its specified 42µVRMS output noise. Without this capacitor, noise increases significantly (to ~360µVRMS, per MAX8888 data). The BP pin bypasses the internal reference, and omitting the capacitor degrades PSRR and increases output ripple sensitivity. The capacitor must be placed close to the BP pin with short traces to maintain effectiveness.
Can the MAX8887EZK33+T be used with ceramic output capacitors?
Yes-the MAX8887EZK33+T is fully stable with ceramic output capacitors of 2.2µF or greater, provided their ESR is ≤0.1Ω. Ceramic capacitors are recommended for their low ESR, small footprint, and excellent high-frequency decoupling. The datasheet specifies 2.2µF as the minimum value for stability and transient response; using 4.7µF further improves PSRR and load-step recovery. Avoid tantalum or aluminum electrolytics due to higher ESR and potential instability.
What is the maximum input voltage the MAX8887EZK33+T can tolerate?
The MAX8887EZK33+T has an absolute maximum input voltage rating of +7V referenced to GND. However, its functional operating range is strictly 2.5V to 5.5V. Operation above 5.5V risks permanent damage, even momentarily. Input undervoltage lockout activates below 2.15V (rising), preventing regulation until VIN exceeds 2.4V. For 5V USB-powered systems, the MAX8887EZK33+T operates safely with standard 5.0V ±5% input, delivering regulated 3.3V output.
How does the shutdown function behave on the MAX8887EZK33+T?
Driving the SHDN pin low places the MAX8887EZK33+T into micropower shutdown, reducing total supply current to ≤0.1µA. During shutdown, the OUT pin is actively discharged through an internal ~800Ω resistor, and the output voltage drops rapidly. The SHDN pin is compatible with 1.8V, 3.3V, and 5V logic levels, and can tolerate up to 6V regardless of VIN or VOUT. To resume regulation, drive SHDN high (≥1.6V); the device then requires ~100µs to stabilize output.
MAX8887EZK33+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:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.15V @ 300mA (Typ)
- 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
MAX8887EZK33+T FAQ
1.How can I place an order for MAX8887EZK33+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8887EZK33+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 MAX8887EZK33+T reliable?
The price and inventory of MAX8887EZK33+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8887EZK33+T is usually 5 days.
3.What payment methods are accepted for MAX8887EZK33+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8887EZK33+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8887EZK33+T?
MAX8887EZK33+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8887EZK33+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 MAX8887EZK33+T?
For technical support, including MAX8887EZK33+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8887EZK33+T requirements.
6.How does Aetrix verify that MAX8887EZK33+T is sourced from the original manufacturer or authorized distributors?
All MAX8887EZK33+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 MAX8887EZK33+T meets industry standards.
7.What is the process for return or replacement of MAX8887EZK33+T?
All MAX8887EZK33+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8887EZK33+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 MAX8887EZK33+T part is unused and in its original packaging.
Return procedure for MAX8887EZK33+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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