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Analog Devices Inc./Maxim Integrated MAX8888EZK16+T
- Part No.:
- MAX8888EZK16+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8888EZK16+T.pdf
- Description:
- IC REG LIN 1.6V 300MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,885
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Product details
Overview
MAX8888EZK16+T from Maxim Integrated is a low-dropout linear regulator delivering 300mA continuous output at 1.6V with 100mV dropout at 200mA, featuring an open-drain power-OK (POK) flag and 55µA no-load supply current. It operates from 2.5V to 5.5V input and targets battery-powered portable electronics requiring precise, stable low-voltage rails.
For engineers reviewing the MAX8888EZK16+T datasheet, MAX8888EZK16+T pinout, MAX8888EZK16+T application, or MAX8888EZK16+T equivalent, this page provides verified electrical parameters, SOT23-5 pin mapping, POK timing behavior, thermal protection thresholds, and validated alternative regulators for portable power management design.
Technical Context
The MAX8888EZK16+T integrates a p-channel MOSFET pass transistor with 0.5Ω RDS(ON), enabling low dropout and load-independent 55µA quiescent current. Its error amplifier compares feedback from an internal 1.25V reference against the regulated 1.6V output via fixed resistor divider.
Power-OK detection uses a comparator monitoring VOUT against 92.5% of nominal voltage (1.48V), with 1% hysteresis and open-drain NMOS output. Thermal shutdown activates at +170°C with 20°C hysteresis, and foldback current limiting reduces trip point to 500mA when VOUT falls below 93% regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.6V ±3% over -40°C to +85°C; factory-trimmed for precision without external resistors. |
| Max Continuous Output Current | 300mA; guaranteed across full temperature range with thermal derating above +70°C. |
| Dropout Voltage | 100mV at 200mA load; enables operation down to VIN = 1.7V while maintaining regulation. |
| Supply Current (No Load) | 55µA; remains constant regardless of load, critical for battery runtime in standby modes. |
| POK Threshold Accuracy | 92.5% ±2.5% of nominal VOUT; ensures reliable power-on reset signaling for microcontrollers. |
| Shutdown Current | 0.1µA typical; reduces system leakage during deep sleep without external discharge circuitry. |
| PSRR @ 1kHz | 40dB; suppresses ripple from noisy DC-DC stages feeding the LDO input. |
Pinout & Package
MAX8888EZK16+T is housed in a RoHS-compliant, thin-profile 5-pin SOT23 package (1mm height, Z5-1 footprint), optimized for space-constrained portable PCBs.
| 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 | Low-impedance return path for all internal circuits; must be connected directly to system ground plane. |
| 3 - SHDN | Active-low enable control | Pulled low to disable regulator; draws ≤100nA bias current; tolerates up to 6V logic high. |
| 4 - POK | Open-drain power-OK flag | Drives low when VOUT < 1.48V; requires external pullup (e.g., 100kΩ to OUT) for logic-level output. |
| 5 - OUT | Regulated output | Delivers 1.6V ±3% at up to 300mA; bypassed with 2.2µF ceramic capacitor (ESR < 0.1Ω). |
Key Features
| Feature | Design Value |
|---|---|
| p-Channel MOSFET pass element | Eliminates base-drive current loss, enabling 55µA quiescent current independent of load. |
| Integrated POK monitor with hysteresis | Provides deterministic power-on reset timing without external comparators or RC networks. |
| Foldback current limiting | Reduces short-circuit current to 500mA when VOUT drops below 93%, lowering thermal stress. |
| Thermal shutdown with hysteresis | Shuts down at +170°C and re-enables only after cooling by 20°C, preventing oscillation under overload. |
| Ultra-low-noise compatible design | Supports BP pin (not used on MAX8888) for noise filtering; MAX8888 maintains 360µVRMS output noise. |
Applications
| Wireless Handsets | Digital Cameras |
|---|---|
|
Use Scenario: Powering RF transceiver ICs and baseband processors during burst transmission. IC Role / Device Role / Timing Role: Primary 1.6V LDO supplying core logic voltage with fast load-transient response. Use Value: 100mV dropout extends usable battery life by enabling operation down to 1.7V cell voltage. |
Use Scenario: Supplying image sensor analog front-end and ISP core logic in compact camera modules. IC Role / Device Role / Timing Role: Low-noise, stable 1.6V rail generator with POK confirmation before sensor initialization. Use Value: 40dB PSRR at 1kHz suppresses switching noise from adjacent DC-DC converters. |
| Notebook Computers | Hand-Held Instruments |
|
Use Scenario: Biasing USB controller PHYs and embedded security co-processors in ultraportable designs. IC Role / Device Role / Timing Role: Always-on 1.6V supply with µA-level shutdown current for instant wake-up capability. Use Value: 0.1µA shutdown current minimizes battery drain during suspend-to-RAM states. |
Use Scenario: Powering precision ADC reference buffers and low-power MCU peripherals in field-deployed meters. IC Role / Device Role / Timing Role: Regulated 1.6V source with thermal protection for unattended operation in variable ambient conditions. Use Value: +170°C thermal shutdown prevents damage during extended high-temperature field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B162MR-G | 1.6V output, 300mA, 120mV dropout at 200mA; no POK output; 25µA IQ | Lacks power-OK signaling; suitable where system-level reset is handled externally | Select when lowest quiescent current is prioritized over POK functionality |
| Analog Devices ADP125ARHZ-1.6-R7 | 1.6V output, 500mA, 135mV dropout at 300mA; POK available only in -1.6-R7 variant; 130µA IQ | Higher dropout and IQ; POK pin functionally identical but requires different pullup configuration | Choose when higher output current headroom is required and board layout allows larger thermal pad |
Compared with MAX8888EZK16+T, the XC6219B162MR-G offers lower quiescent current but omits POK-requiring external reset logic-while the ADP125ARHZ-1.6-R7 delivers higher current at the cost of increased dropout and supply current, making it better suited for thermally robust designs needing margin.
Availability
MAX8888EZK16+T is available at Aetrix Electronics and suitable for wireless handsets, digital cameras, and notebook computers requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for MAX8888EZK16+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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and portable applications.
The MAX8887/MAX8888 product line delivers ultra-low-quiescent-current LDOs with integrated POK and thermal protection, specifically engineered for battery-powered portable electronics where runtime, reliability, and small size are critical.
FAQ
What is the exact output voltage tolerance of the MAX8888EZK16+T over temperature?
The MAX8888EZK16+T guarantees ±3% output voltage accuracy across the full operating temperature range of -40°C to +85°C, with tighter ±1.2% tolerance at +25°C. This specification is confirmed in the Electrical Characteristics table under "Output Voltage Accuracy" with conditions IOUT = 100µA to 300mA. The 1.6V nominal output thus remains within 1.552V–1.648V over temperature, ensuring compatibility with 1.6V-core logic interfaces.
Does the MAX8888EZK16+T require an external bypass capacitor on the BP pin?
No-the BP (bypass) pin is not present on the MAX8888EZK16+T. That pin exists only on the MAX8887 variant for noise reduction; the MAX8888 replaces it with the POK pin. Therefore, the MAX8888EZK16+T has no BP pin and does not support external noise-filtering capacitors. Its output noise is specified at 360µVRMS (10Hz–100kHz) with standard 2.2µF COUT.
How does the POK output behave during shutdown of the MAX8888EZK16+T?
During shutdown (SHDN = GND), the MAX8888EZK16+T actively drives the POK pin low, regardless of output voltage level. This behavior is explicitly documented in the Pin Description section: "POK is driven low in shutdown." It ensures a defined reset state for downstream logic, eliminating floating signals and enabling clean system-level power sequencing without additional external circuitry.
What is the minimum input voltage required for the MAX8888EZK16+T to maintain regulation at full 300mA load?
The minimum input voltage is determined by dropout: VIN(MIN) = VOUT + VDROPOUT. At 300mA, the datasheet specifies a maximum dropout of 150mV for VOUT = 3.3V, but for 1.6V output, the Typical Operating Characteristics curve "DROPOUT VOLTAGE vs. OUTPUT VOLTAGE" shows ~110mV at 200mA and ~130mV at 300mA. Thus, VIN(MIN) ≈ 1.6V + 0.13V = 1.73V. However, the absolute minimum input is 2.5V per Absolute Maximum Ratings-so regulation is guaranteed only above 2.5V.
Can the MAX8888EZK16+T be used with ceramic output capacitors having ESR above 0.1Ω?
No-using an output capacitor with ESR > 0.1Ω risks instability and degraded transient response. The datasheet explicitly states: "Use output capacitors with an ESR of 0.1Ω or less to ensure stability and optimum transient response." Surface-mount X5R/X7R ceramics rated ≥2.2µF and specified for ≤0.1Ω ESR at 100kHz meet this requirement. Higher-ESR tantalum or aluminum electrolytics are not recommended for the MAX8888EZK16+T.
MAX8888EZK16+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):
- 1.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 100 µA
- Current - Supply (Max):
- 65 µA
- PSRR:
- 40dB (1kHz)
- Control Features:
- Enable, Power Good
- 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
MAX8888EZK16+T FAQ
1.How can I place an order for MAX8888EZK16+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8888EZK16+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 MAX8888EZK16+T reliable?
The price and inventory of MAX8888EZK16+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8888EZK16+T is usually 5 days.
3.What payment methods are accepted for MAX8888EZK16+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8888EZK16+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8888EZK16+T?
MAX8888EZK16+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8888EZK16+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 MAX8888EZK16+T?
For technical support, including MAX8888EZK16+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8888EZK16+T requirements.
6.How does Aetrix verify that MAX8888EZK16+T is sourced from the original manufacturer or authorized distributors?
All MAX8888EZK16+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 MAX8888EZK16+T meets industry standards.
7.What is the process for return or replacement of MAX8888EZK16+T?
All MAX8888EZK16+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8888EZK16+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 MAX8888EZK16+T part is unused and in its original packaging.
Return procedure for MAX8888EZK16+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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