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Analog Devices Inc./Maxim Integrated MAX8877EUK33-T
- Part No.:
- MAX8877EUK33-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8877EUK33-T.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,300
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Product details
Overview
MAX8877EUK33-T from Maxim Integrated is a low-noise, low-dropout linear regulator with preset 3.3V output, delivering up to 150mA from 2.5V–6.5V input. It features 30µVRMS output noise, 165mV dropout at full load, and 100µA operating supply current independent of load or dropout condition. It serves as a stable power source for RF sections and precision analog circuitry in portable battery-powered systems.
For engineers reviewing the MAX8877EUK33-T datasheet, MAX8877EUK33-T pinout, MAX8877EUK33-T application, or MAX8877EUK33-T equivalent, key selection criteria include guaranteed ±1.4% output accuracy over temperature, reverse battery protection, thermal shutdown at 155°C, and compatibility with standard '2982 footprint for drop-in replacement in space-constrained designs.
Technical Context
The MAX8877EUK33-T uses an internal P-channel MOSFET pass transistor (1.1Ω typical RDS(ON)) to eliminate base-drive current losses, enabling constant 100µA quiescent current across all operating conditions-including dropout, light load, and heavy load. Its error amplifier compares a 1.25V bandgap reference against feedback from an internal resistor divider tied to the OUT pin.
Noise reduction relies on a dedicated BP pin with external 0.01µF ceramic capacitor forming an 80Hz low-pass filter; combined with COUT ≥1µF, this achieves 30µVRMS (10Hz–100kHz). Shutdown logic accepts active-low signal at SHDN, reducing supply current to 10nA while maintaining reverse battery protection and short-circuit/thermal shutdown functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V ±1.4% (factory-preset; stable across -40°C to +85°C and 0.1–120mA load) |
| Max Output Current | 150mA continuous; current limit activates at ≥160mA (min) to protect against shorts |
| Dropout Voltage | 165mV at 150mA (enables operation down to 3.465V input for 3.3V output) |
| Output Noise | 30µVRMS (10Hz–100kHz with 0.01µF BP cap and 10µF COUT; critical for RF/ADC power rails) |
| Quiescent Current | 100µA (constant across load and dropout; enables >1-year battery life in standby IoT nodes) |
| Shutdown Current | 10nA (logic-controlled; preserves battery charge during system sleep modes) |
| Input Voltage Range | 2.5V to 6.5V (supports single Li-ion, dual Alkaline/NiMH, or regulated 5V rails) |
Pinout & Package
MAX8877EUK33-T is housed in a 5-pin SOT23-5 regular package (JEDEC MO-178AA), with GND serving dual role as electrical return and thermal path. PCB layout requires soldering GND to a large copper area for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator input | Accepts 2.5V–6.5V; bypass with 1µF ceramic capacitor to GND for line-transient immunity |
| 2 GND | Ground and thermal pad | Electrical reference and primary heat dissipation path; must connect to large PCB copper area |
| 3 SHDN | Active-low enable control | Pull low to enter 10nA shutdown; pull high (≥2.0V) or tie to IN for normal operation |
| 4 BP | Bypass reference node | Connects to 0.01µF ceramic cap to reduce reference noise; determines output spectral purity |
| 5 OUT | Regulated output | Delivers 3.3V @ ≤150mA; bypass with ≥1µF (ESR <0.2Ω) ceramic cap for stability and transient response |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass element | Eliminates base-drive current loss, ensuring 100µA IQ remains constant regardless of load or dropout state |
| Reverse battery protection | Limits reverse current to ≤1mA if VIN or SHDN falls below GND-prevents damage in miswired battery compartments |
| Thermal shutdown with hysteresis | Shuts down at 155°C junction temp; restarts only after cooling by 15°C-avoids thermal oscillation during overload |
| Factory-trimmed output accuracy | ±1.4% over full -40°C to +85°C range and 0.1–120mA load-reduces need for external calibration in production |
| '2982 pin-compatible footprint | Enables direct mechanical and layout replacement of legacy regulators without PCB redesign |
Applications
| Cellular Phone RF Power Supply | Hand-Held Instrument Analog Front-End |
|---|---|
|
Use Scenario: Powering RF transceiver LNA and mixer stages in GSM/UMTS handsets where supply ripple directly impacts EVM and adjacent channel leakage. IC Role / Device Role / Timing Role: Low-noise 3.3V bias rail generator with <30µVRMS noise floor and fast load-transient recovery (12mV step @ 50mA). Use Value: Enables compliant RF performance without adding ferrite beads or extra LC filtering-reducing BOM count and board area. |
Use Scenario: Supplying precision ADCs, op-amps, and sensor interfaces in portable multimeters and data loggers requiring stable reference voltage. IC Role / Device Role / Timing Role: Ultra-stable 3.3V rail with ±1.4% accuracy and minimal thermal drift (<100ppm/°C typical) across operating temperature. Use Value: Eliminates gain/offset recalibration cycles in field-deployed instruments-extending calibration intervals to 12+ months. |
| PCMCIA Card Core Logic Rail | Palmtop Computer Memory Interface |
|
Use Scenario: Providing regulated 3.3V to PCMCIA Type II card controllers and flash memory interfaces in laptops and industrial terminals. IC Role / Device Role / Timing Role: High PSRR (63dB @ DC–10kHz) and reverse battery protection ensure robustness against host bus voltage transients and hot-swap events. Use Value: Prevents card corruption and controller latch-up during insertion/removal-meeting PCMCIA 2.1 reliability requirements. |
Use Scenario: Powering SRAM, NOR flash, and display drivers in palmtop PDAs where battery runtime and cold-temperature startup are critical. IC Role / Device Role / Timing Role: Delivers 150mA at 3.3V with 165mV dropout and 100µA IQ, enabling operation down to 3.465V input even at -40°C. Use Value: Extends usable battery voltage range by ~200mV versus older LDOs-adding ~8% runtime in Li-ion powered devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS76333DBVR | Higher 250mV dropout at 150mA; 50µVRMS noise; no reverse battery protection | Lacks reverse polarity safeguard-requires external diode in battery-fed designs | Choose when cost is primary constraint and reverse protection is handled externally |
| MCP1700-3302E/TO | 150mV dropout at 250mA; 40µVRMS noise; 2.3µA quiescent current but no shutdown pin | No logic-controlled shutdown-limits deep-sleep capability in ultra-low-power systems | Prefer for always-on sensors where shutdown is unnecessary and lowest IQ dominates |
Compared with TPS76333DBVR and MCP1700-3302E/TO, the MAX8877EUK33-T uniquely combines sub-200mV dropout, 30µVRMS noise, 10nA shutdown, and integrated reverse battery protection-all in a '2982-compatible SOT23-5 package-making it optimal for compact, battery-critical RF and portable instrumentation designs.
Availability
MAX8877EUK33-T is available at Aetrix Electronics and suitable for cellular telephones, hand-held instruments, PCMCIA cards, and palmtop computers requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for MAX8877EUK33-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 MAX8877/MAX8878 product line was designed specifically for battery-powered portable electronics requiring ultra-low noise, low dropout, and minimal quiescent current-targeting RF subsystems, precision analog front-ends, and space-constrained handheld devices.
FAQ
What is the guaranteed output voltage tolerance for MAX8877EUK33-T across temperature and load?
The MAX8877EUK33-T guarantees ±1.4% output voltage accuracy over the full -40°C to +85°C operating temperature range and for load currents from 0.1mA to 120mA. This specification is production-tested and applies to the factory-preset 3.3V output, eliminating need for post-assembly trimming in most applications.
Does MAX8877EUK33-T include reverse battery protection, and how does it function?
Yes, MAX8877EUK33-T includes integrated reverse battery protection that limits reverse current to ≤1mA when either IN or SHDN falls below GND. Internal circuitry monitors pin polarity and disconnects parasitic paths-preventing damage during incorrect battery installation in consumer handheld devices.
What capacitor values are required for stable operation of MAX8877EUK33-T?
For stable operation, MAX8877EUK33-T requires a 1µF ceramic capacitor (ESR <0.2Ω) on the OUT pin and a 1µF ceramic capacitor on the IN pin. For VOUT = 3.3V (≥2.5V), 1µF is sufficient; a 0.01µF ceramic capacitor must be placed on the BP pin to achieve specified 30µVRMS noise performance.
How does the shutdown feature of MAX8877EUK33-T behave, and what is its leakage current?
The MAX8877EUK33-T features an active-low SHDN pin that reduces total supply current to 10nA (typical at +25°C) when pulled low. During shutdown, the device maintains reverse battery protection and thermal shutdown functionality while disabling output regulation-ideal for deep-sleep modes in battery-powered systems.
Is MAX8877EUK33-T pin-compatible with industry-standard '2982 regulators, and what does that mean for PCB design?
Yes, MAX8877EUK33-T is fully pin-compatible with the industry-standard '2982 family in the SOT23-5 package. This means identical PCB footprint, pad layout, and pin assignments (IN, GND, SHDN, BP, OUT), allowing direct mechanical replacement without layout changes-accelerating upgrade paths in existing designs.
MAX8877EUK33-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.165V @ 150mA (Typ)
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 180 µA
- Current - Supply (Max):
- 100 µA
- PSRR:
- -
- Control Features:
- Enable
- 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
MAX8877EUK33-T FAQ
1.How can I place an order for MAX8877EUK33-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8877EUK33-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 MAX8877EUK33-T reliable?
The price and inventory of MAX8877EUK33-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8877EUK33-T is usually 5 days.
3.What payment methods are accepted for MAX8877EUK33-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8877EUK33-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8877EUK33-T?
MAX8877EUK33-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8877EUK33-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 MAX8877EUK33-T?
For technical support, including MAX8877EUK33-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8877EUK33-T requirements.
6.How does Aetrix verify that MAX8877EUK33-T is sourced from the original manufacturer or authorized distributors?
All MAX8877EUK33-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 MAX8877EUK33-T meets industry standards.
7.What is the process for return or replacement of MAX8877EUK33-T?
All MAX8877EUK33-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8877EUK33-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 MAX8877EUK33-T part is unused and in its original packaging.
Return procedure for MAX8877EUK33-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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