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Analog Devices Inc./Maxim Integrated MAX8885EUK26-T
- Part No.:
- MAX8885EUK26-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8885EUK26-T.pdf
- Description:
- 150 MILLIAMP, LOW-DROPOUT LINEAR
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX8885EUK26-T from Maxim Integrated is a 2.6V fixed-output, 150mA low-dropout linear regulator with P-channel MOSFET pass element, 85µA no-load supply current, ±1% output voltage accuracy, and active-low open-drain Power-OK (POK) output. It operates from +2.5V to +6.5V input and delivers stable regulation in portable battery-powered systems such as cellular handsets and PCMCIA cards.
For engineers reviewing the MAX8885EUK26-T datasheet, MAX8885EUK26-T pinout, MAX8885EUK26-T application, or MAX8885EUK26-T equivalent, key selection criteria include dropout performance at 150mA (165mV), compatibility with high-ESR tantalum capacitors (≥0.5Ω), reverse-battery protection, thermal shutdown at +170°C, and guaranteed 1µA max shutdown current.
Technical Context
The MAX8885EUK26-T integrates a 1.25V bandgap reference, error amplifier, internal resistor divider for 2.6V output, and P-channel MOSFET pass transistor (RDS(ON) ≈ 1.1Ω). Its control loop is optimized for stability with 4.7µF tantalum output capacitors having ESR ≥ 0.5Ω - not ceramic.
Power-OK monitoring compares VOUT against a threshold of 95% of nominal (2.47V), with hysteresis ensuring clean assertion during dropout, current limit, or thermal shutdown. Shutdown logic disables regulation while maintaining <1µA supply current, 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 2.6V ±1% - factory-trimmed; enables precise rail generation without external feedback components. |
| Max Output Current | 150mA guaranteed - supports moderate-power analog/digital subsystems in space-constrained portable designs. |
| Dropout Voltage | 165mV at 150mA load - extends usable battery life by allowing operation down to VIN = 2.76V before regulation loss. |
| Quiescent Current | 85µA at no load - minimizes standby power drain in always-on battery-backed functions. |
| PSRR | 60dB at 100Hz - suppresses low-frequency supply noise from switching converters or noisy battery sources. |
| Shutdown Current | ≤1µA maximum - ensures negligible battery leakage during system sleep modes. |
| Thermal Shutdown | Activates at +170°C with 20°C hysteresis - provides self-recovery under sustained overload without latch-up. |
Pinout & Package
MAX8885EUK26-T is housed in a 5-pin SOT23-5 package (JEDEC MO-178AA), with exposed pad not electrically connected. The GND pin serves dual roles: circuit reference and thermal path to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator input | Accepts +2.5V to +6.5V; requires ≥1µF bypass capacitor placed within 5mm for stability. |
| 2 GND | Ground reference & thermal sink | Must connect to large copper area or ground plane to dissipate heat and maintain <150°C junction temperature. |
| 3 SHDN | Active-low enable control | Pulled high to IN for normal operation; driven low to reduce supply current to ≤1µA. |
| 4 POK | Open-drain Power-OK indicator | Asserts low when VOUT < 2.47V; requires external 100kΩ pull-up to OUT for logic-compatible signaling. |
| 5 OUT | Regulated 2.6V output | Sources up to 150mA; requires 4.7µF tantalum capacitor (ESR ≥ 0.5Ω) for guaranteed stability. |
Key Features
| Feature | Design Value |
|---|---|
| Optimized for high-ESR tantalum capacitors | Stable with 4.7µF/≥0.5Ω output caps - eliminates need for expensive low-ESR ceramics in cost-sensitive designs. |
| Reverse-battery protection | Limits reverse current to ≤1mA when VIN or SHDN goes negative - prevents damage from incorrect battery insertion. |
| Undervoltage POK output | Monitors VOUT at 95% threshold with hysteresis - enables reliable power-fail detection for microcontroller reset sequencing. |
| Low 85µA quiescent current | Independent of load - preserves battery runtime in idle or light-load states without sacrificing regulation integrity. |
| Thermal shutdown with hysteresis | +170°C trip / +150°C recovery - allows automatic recovery from transient overloads without manual intervention. |
Applications
| Cellular Handsets | PCMCIA Cards |
|---|---|
|
Use Scenario: Powering RF front-end ICs and baseband processors in GSM/PCS handsets operating from single Li-ion cells. IC Role / Device Role / Timing Role: Primary 2.6V LDO supplying noise-sensitive analog sections; POK signals microcontroller on brownout. Use Value: 60dB PSRR at 100Hz rejects switching noise from PMIC DC-DC converters; 165mV dropout extends talk time by ~12 minutes per charge cycle. |
Use Scenario: Providing regulated 2.6V to memory controllers and interface logic in hot-pluggable PCMCIA Type II cards. IC Role / Device Role / Timing Role: Local point-of-load regulator with reverse-battery protection - critical for field-replaceable modules subject to accidental polarity reversal. Use Value: ≤1mA reverse current prevents card damage during misinsertion; 1µA shutdown current meets PC Card power-off specification. |
| Palmtop Computers | Hand-Held Instruments |
|
Use Scenario: Supplying 2.6V to LCD bias generators and touch-screen controllers in battery-operated palmtops. IC Role / Device Role / Timing Role: Low-noise, low-quiescent regulator enabling >10-hour standby; POK triggers graceful OS suspend on voltage sag. Use Value: 170µVRMS output noise avoids display artifacts; 85µA IQ doubles standby duration versus comparable LDOs. |
Use Scenario: Powering precision ADCs and sensor signal chains in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Clean 2.6V reference rail for 16-bit SAR ADCs; thermal shutdown prevents calibration drift during extended measurements. Use Value: ±1% output accuracy maintains measurement traceability; 110mV dropout at 100mA ensures regulation across full battery discharge curve. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8875EUK26-T | Pin-compatible but optimized for ceramic capacitors (requires COUT ≥ 1µF, ESR < 0.1Ω); higher 120µA quiescent current. | Used where board space mandates small 0402/0603 ceramics; unsuitable with tantalum due to instability risk. | Select MAX8875EUK26-T only if ceramic output caps are mandatory and layout allows strict ESR control. |
| MIC5206-2.6YML | Same SOT23-5 footprint; 150mA rating; but uses NPN pass element → higher dropout (350mV at 150mA) and 120µA IQ. | Lacks POK output and reverse-battery protection; requires external components for power-fail detection. | Choose MIC5206-2.6YML only if POK and reverse protection are unnecessary and higher dropout is acceptable. |
Compared with MAX8885EUK26-T, MAX8875EUK26-T trades tantalum compatibility for ceramic flexibility and slightly higher IQ, while MIC5206-2.6YML sacrifices POK, reverse protection, and dropout performance for legacy design continuity - neither is pin- or functionally identical without validation.
Availability
MAX8885EUK26-T is available at Aetrix Electronics and suitable for cellular handsets, PCMCIA cards, palmtop computers, hand-held instruments, and cordless phones requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MAX8885EUK26-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 semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX8885 series was designed specifically for cost-sensitive, battery-powered portable equipment requiring ultra-low quiescent current, robust protection features, and compatibility with inexpensive high-ESR tantalum capacitors.
FAQ
What is the output voltage tolerance of the MAX8885EUK26-T?
The MAX8885EUK26-T has a factory-trimmed output voltage of 2.6V with ±1% accuracy over the full operating temperature range (-40°C to +85°C) and line/load conditions. This tolerance is guaranteed by production testing and applies to all units shipped - no external calibration is required for precision rail generation.
Can the MAX8885EUK26-T be used with ceramic output capacitors?
No, the MAX8885EUK26-T is not stable with ceramic output capacitors. Its internal compensation is optimized for high-ESR tantalum capacitors (≥0.5Ω). Using ceramic caps (typically <0.05Ω ESR) causes oscillation and regulation failure. For ceramic-compatible operation, use the pin-compatible MAX8875EUK26-T instead.
What is the minimum input voltage required for regulation at full 150mA load?
At 150mA load, the MAX8885EUK26-T requires an input voltage of at least 2.765V to maintain regulation - calculated as VOUT + VDROPOUT = 2.6V + 165mV. Below this, the device enters dropout and VOUT declines linearly with VIN. The absolute minimum VIN is +2.5V, but regulation is not guaranteed below 2.765V at full load.
How does the POK output behave during shutdown?
The POK output of the MAX8885EUK26-T is inactive during shutdown - it remains in high-impedance state and does not assert low. POK only monitors regulation status when the device is enabled (SHDN = high). To detect shutdown events, monitor the SHDN pin directly or use external logic tied to the enable signal.
Does the MAX8885EUK26-T provide overcurrent protection?
Yes, the MAX8885EUK26-T includes internal current limiting that clamps output current to approximately 390mA (typical), with a guaranteed minimum limit of 160mA. This protects the device during short-circuit conditions - the output can be shorted to GND indefinitely without damage, and the part recovers automatically once the fault is removed.
MAX8885EUK26-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):
- 2.6V
- 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
MAX8885EUK26-T FAQ
1.How can I place an order for MAX8885EUK26-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8885EUK26-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 MAX8885EUK26-T reliable?
The price and inventory of MAX8885EUK26-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8885EUK26-T is usually 5 days.
3.What payment methods are accepted for MAX8885EUK26-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8885EUK26-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8885EUK26-T?
MAX8885EUK26-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8885EUK26-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 MAX8885EUK26-T?
For technical support, including MAX8885EUK26-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8885EUK26-T requirements.
6.How does Aetrix verify that MAX8885EUK26-T is sourced from the original manufacturer or authorized distributors?
All MAX8885EUK26-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 MAX8885EUK26-T meets industry standards.
7.What is the process for return or replacement of MAX8885EUK26-T?
All MAX8885EUK26-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8885EUK26-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 MAX8885EUK26-T part is unused and in its original packaging.
Return procedure for MAX8885EUK26-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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