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Analog Devices Inc./Maxim Integrated MAX8885EUK30-T
- Part No.:
- MAX8885EUK30-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8885EUK30-T.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:2,278
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Product details
Overview
MAX8885EUK30-T from Maxim Integrated is a 3.0V fixed-output, 150mA low-dropout linear regulator with P-channel MOSFET pass device, 85µA no-load supply current, 110mV dropout at 100mA, and active-low open-drain Power-OK (POK) output. It operates from +2.5V to +6.5V input and is optimized for portable battery-powered systems using low-cost high-ESR tantalum capacitors.
For engineers reviewing the MAX8885EUK30-T datasheet, MAX8885EUK30-T pinout, MAX8885EUK30-T application, or MAX8885EUK30-T equivalent, key selection criteria include guaranteed 3.0V ±1% output accuracy, reverse-battery protection, thermal shutdown with 20°C hysteresis, 60dB PSRR at 100Hz, and compatibility with 4.7µF tantalum output capacitors (ESR > 0.5Ω).
Technical Context
The MAX8885EUK30-T integrates a 1.25V bandgap reference, error amplifier, internal resistor divider, and P-channel MOSFET pass transistor (RDS(ON) ≈ 1.1Ω) to deliver stable 3.0V regulation. Its control loop is compensated for stability with high-ESR tantalum capacitors, eliminating need for external compensation.
Power-OK functionality uses an internal comparator monitoring VOUT against a −5.3% threshold (2.841V at 3.0V nominal), with hysteresis and open-drain N-MOS output. Shutdown logic reduces supply current to ≤1µA, and reverse-battery protection limits reverse current to ≤1mA when VIN or SHDN falls below GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0V ±1% over −40°C to +85°C - ensures precise rail generation for 3.0V logic and analog circuitry without external feedback. |
| Max Output Current | 150mA guaranteed - supports moderate-power subsystems like RF front-ends or sensor interfaces in handheld devices. |
| Dropout Voltage | 110mV at 100mA load - enables operation down to VIN = 3.11V, extending usable battery life in single-cell Li-ion or multi-cell alkaline systems. |
| No-Load Supply Current | 85µA - minimizes quiescent drain during standby, critical for long-duration battery operation in PCS phones and palmtops. |
| PSRR | 60dB at 100Hz - suppresses low-frequency noise from switching power supplies or noisy battery sources feeding the LDO input. |
| POK Threshold | −5.3% of VOUT (2.841V) with hysteresis - provides reliable undervoltage detection for system reset sequencing without external comparators. |
| Thermal Shutdown | Triggers at +170°C with +20°C hysteresis - protects against sustained overload while permitting pulsed operation during transient faults. |
Pinout & Package
Package: 5-pin SOT23-5 (JEDEC MO-178AA), 2.9mm × 1.6mm footprint, GND pin serves as thermal path - requires soldering to PCB ground plane for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator input | Accepts +2.5V to +6.5V; bypass with ≥1µF ceramic capacitor placed within 5mm to suppress input ripple and transients. |
| 2 GND | Ground and thermal pad | Reference node for all internal circuits; must connect to large copper area to dissipate heat and maintain <150°C junction temperature. |
| 3 SHDN | Active-low enable | Pulled high to IN for normal operation; driven low to reduce IQ to ≤1µA - supports software-controlled power gating. |
| 4 POK | Open-drain Power-OK | Asserts low when VOUT drops ≤2.841V; requires external 100kΩ pull-up to OUT for logic-compatible signaling and POR delay. |
| 5 OUT | Regulated 3.0V output | Sources up to 150mA; requires 4.7µF tantalum capacitor (ESR > 0.5Ω) for stability - ceramic capacitors cause oscillation. |
Key Features
| Feature | Design Value |
|---|---|
| Optimized for high-ESR tantalum capacitors | Stable with 4.7µF/0.5–10Ω ESR output caps - eliminates cost and size penalty of low-ESR ceramics or polymer alternatives. |
| Reverse-battery protection | Limits reverse current to ≤1mA when VIN or SHDN < GND - prevents damage during battery insertion errors in consumer handhelds. |
| P-channel MOSFET pass element | Eliminates base-drive current loss - maintains 85µA IQ across full load range (0–150mA) and dropout conditions. |
| Guaranteed 150mA output current | Validated over full temperature range (−40°C to +85°C) - enables robust design margin without derating for ambient extremes. |
| Undervoltage Power-OK output | Internally referenced comparator with hysteresis - replaces discrete reset ICs in space-constrained designs like PCMCIA cards. |
Applications
| PCS Phones | Cellular Phones |
|---|---|
|
Use Scenario: Powering baseband processor I/O rails and RF synthesizer bias in dual-mode PCS handsets. IC Role / Device Role / Timing Role: Primary 3.0V LDO delivering clean, regulated voltage to noise-sensitive RF sections. Use Value: 60dB PSRR at 100Hz attenuates switching noise from PMIC DC-DC converters, preserving RF signal integrity. |
Use Scenario: Supplying camera module interface and touchscreen controller in GSM/EDGE feature phones. IC Role / Device Role / Timing Role: Fixed 3.0V regulator with POK output enabling synchronized power-on reset for peripheral initialization. Use Value: POK assertion at 2.841V ensures microcontroller resets before VOUT falls below 3.0V logic threshold, preventing firmware corruption. |
| Palmtop Computers | PCMCIA Cards |
|
Use Scenario: Regulating 3.0V for SRAM and CPLD configuration in battery-operated palmtops with limited board area. IC Role / Device Role / Timing Role: Compact SOT23-5 LDO providing low-quiescent current standby power with thermal fault recovery. Use Value: 85µA no-load IQ extends battery runtime during suspend mode; thermal hysteresis enables self-recovery after brief overloads. |
Use Scenario: Generating 3.0V for CardBus interface logic and EEPROM in hot-pluggable PCMCIA peripherals. IC Role / Device Role / Timing Role: Reverse-battery protected LDO ensuring safe insertion/removal under variable host power conditions. Use Value: ≤1mA reverse current during misinsertion prevents damage to card controller ICs and host slot circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8875EUK30-T | Pin-compatible but optimized for ceramic output capacitors (requires COUT ≥ 1µF, ESR < 0.1Ω); higher 150µA IQ; no reverse-battery protection. | Used where board layout mandates ceramic caps or where PSRR > 60dB at higher frequencies is required. | Select MAX8875EUK30-T only if ceramic capacitor stability is mandatory and reverse-battery risk is absent. |
| MIC5206-3.0YM5-TR | Pin-compatible; 150mA output; 180µA IQ; no POK output; no reverse-battery protection; requires 2.2µF ceramic cap. | Deployed in cost-sensitive industrial modules where POK and reverse protection are omitted. | Choose MIC5206-3.0YM5-TR when POK signaling is unnecessary and thermal performance requirements are less stringent. |
Compared with MAX8885EUK30-T, MAX8875EUK30-T trades reverse-battery protection and tantalum compatibility for ceramic-cap flexibility and slightly higher IQ, while MIC5206-3.0YM5-TR omits both POK and reverse protection to reduce BOM count and cost in non-critical applications.
Availability
MAX8885EUK30-T is available at Aetrix Electronics and suitable for PCS phones, cellular handsets, palmtop computers, and PCMCIA cards requiring stable component supply with guaranteed 3.0V ±1% output and −40°C to +85°C operation.
Supply support for MAX8885EUK30-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, communications, and consumer applications.
The MAX8885 series was developed specifically for cost-sensitive portable electronics requiring ultra-low IQ, high-ESR capacitor compatibility, and integrated power-good monitoring - targeting battery-powered hand-held instruments and wireless handsets.
FAQ
What is the output voltage tolerance of the MAX8885EUK30-T over temperature?
The MAX8885EUK30-T delivers 3.0V output with ±1% accuracy across the full operating temperature range of −40°C to +85°C. This specification is production-tested at +25°C and guaranteed over temperature via Statistical Quality Control correlation. The MAX8885EUK30-T maintains this tolerance without external trimming or calibration components.
Can the MAX8885EUK30-T be used with ceramic output capacitors?
No, the MAX8885EUK30-T is not stable with ceramic output capacitors due to its internal compensation optimized for high-ESR tantalum types (≥0.5Ω). Using ceramic capacitors may cause oscillation or poor transient response. For ceramic-cap compatible operation, select the pin-compatible MAX8875EUK30-T instead.
What is the minimum input voltage required for regulation at full 150mA load?
At 150mA load, the MAX8885EUK30-T has a maximum dropout voltage of 165mV. Therefore, the minimum input voltage for regulation is 3.0V + 0.165V = 3.165V. Below this, the output voltage will drop proportionally with input - a critical consideration for end-of-life battery voltage in single-cell Li-ion systems.
How does the POK output function during shutdown?
The POK output of the MAX8885EUK30-T is inactive during shutdown - it remains in high-impedance state regardless of VOUT level. POK only asserts low when the device is enabled (SHDN = high) and VOUT falls below 2.841V due to dropout, overload, or thermal shutdown. This prevents false reset signals during intentional power-down sequences.
What thermal design guidance applies to the MAX8885EUK30-T's GND pin?
The GND pin of the MAX8885EUK30-T serves as both electrical reference and primary thermal path. To maintain junction temperature ≤150°C, it must be soldered to a minimum 100mm² copper area on the PCB - ideally connected to an internal ground plane. Without adequate copper, power dissipation is limited to 571mW at +70°C ambient, derating by 7.1mW/°C above that point.
MAX8885EUK30-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.165V @ 150mA (Typ)
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 180 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (100Hz)
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX8885EUK30-T FAQ
1.How can I place an order for MAX8885EUK30-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8885EUK30-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 MAX8885EUK30-T reliable?
The price and inventory of MAX8885EUK30-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8885EUK30-T is usually 5 days.
3.What payment methods are accepted for MAX8885EUK30-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8885EUK30-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8885EUK30-T?
MAX8885EUK30-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8885EUK30-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 MAX8885EUK30-T?
For technical support, including MAX8885EUK30-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8885EUK30-T requirements.
6.How does Aetrix verify that MAX8885EUK30-T is sourced from the original manufacturer or authorized distributors?
All MAX8885EUK30-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 MAX8885EUK30-T meets industry standards.
7.What is the process for return or replacement of MAX8885EUK30-T?
All MAX8885EUK30-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8885EUK30-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 MAX8885EUK30-T part is unused and in its original packaging.
Return procedure for MAX8885EUK30-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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