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Analog Devices Inc./Maxim Integrated MAX8877EUK22+T
- Part No.:
- MAX8877EUK22+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX8877EUK22+T.pdf
- Description:
- IC REG LINEAR 2.2V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,287
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Product details
Overview
MAX8877EUK22+T from Maxim Integrated is a low-noise, low-dropout linear regulator with 2.2V preset output voltage, 150mA maximum output current, 165mV dropout at full load, 30µVRMS output noise, and 100µA operating supply current. It uses an internal P-channel MOSFET pass device and operates from 2.5V to 6.5V input, serving as a precision power source for battery-powered portable electronics.
For engineers reviewing the MAX8877EUK22+T datasheet, MAX8877EUK22+T pinout, MAX8877EUK22+T application, or MAX8877EUK22+T equivalent, key selection criteria include dropout performance under 150mA load, ultra-low shutdown current (10nA), reverse battery protection, BP-capacitor–dependent noise reduction, and SOT23-5 package compatibility with industry-standard '2982 footprint.
Technical Context
The MAX8877EUK22+T implements a fixed-output LDO architecture using a P-channel MOSFET pass transistor with 1.1Ω typical RDS(ON), enabling stable regulation down to 165mV dropout at 150mA while maintaining 100µA quiescent current across all load and dropout conditions. Its error amplifier compares a 1.25V bandgap reference against feedback from an internal resistor divider tied to the OUT pin.
Noise suppression relies on a dedicated BP pin with external 0.01µF ceramic capacitor forming an 80Hz low-pass filter; output noise is specified at 30µVRMS (10Hz–100kHz) with CBP = 0.01µF and COUT = 10µF. Shutdown is active-low (VIL ≤ 0.4V), reducing supply current to 10nA and disabling regulation without auto-discharge - distinguishing it from the MAX8878 variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.2V ±1.4% (factory-preset, fixed; enables direct replacement of 2.2V rail without external resistors) |
| Max Output Current | 150mA (supports moderate-power analog/RF sections in handheld devices) |
| Dropout Voltage | 165mV at 150mA (allows operation down to 2.365V input when VOUT = 2.2V, extending battery life) |
| Output Noise | 30µVRMS (10Hz–100kHz, with 0.01µF BP cap; suitable for noise-sensitive ADCs and RF ICs) |
| Quiescent Current | 100µA (constant across load and dropout; critical for always-on subsystems) |
| Shutdown Current | 10nA (enables deep-sleep modes in portable systems with minimal leakage) |
| Input Voltage Range | 2.5V to 6.5V (covers single Li-ion, dual Alkaline/NiMH, and regulated intermediate rails) |
Pinout & Package
SOT23-5 regular package (5-pin, 1.6mm × 2.9mm × 1.1mm body height), thermally enhanced with GND pin acting as heatsink; compatible with standard '2982 footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Regulator input | Accepts 2.5V–6.5V supply; requires ≥1µF bypass to GND for stability and line-transient immunity |
| 2 GND | Ground reference & thermal path | Electrical return and primary heat dissipation path; must connect to large PCB copper area |
| 3 SHDN | Active-low enable control | Pull ≤0.4V to disable regulator; draws only 10nA in shutdown (no auto-discharge) |
| 4 BP | Bypass reference node | Connects to 0.01µF ceramic cap to reduce reference noise; sets output noise floor |
| 5 OUT | Regulated output | Delivers up to 150mA at 2.2V; requires ≥1µF (ESR < 0.2Ω) ceramic cap for VOUT ≥ 2.5V - here, 1µF suffices per design guidance for 2.2V |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass element | Eliminates base-drive current loss; maintains 100µA IQ even in dropout or no-load conditions |
| Reverse battery protection | Limits reverse current to ≤1mA if VIN or SHDN falls below GND - prevents damage during battery insertion errors |
| Thermal shutdown with hysteresis | Triggers at +155°C junction temperature; re-enables after 15°C cooldown - protects against sustained overload |
| Current limiting | Guarantees ≥160mA minimum current limit; allows indefinite short-circuit survival without latch-up |
| Fixed 2.2V output accuracy | ±1.4% over -40°C to +85°C and 0.1mA–120mA load - ensures reliable logic-level and analog biasing |
Applications
| Cellular Telephone Power Management | Hand-Held Instrument Reference Supply |
|---|---|
Use Scenario: Powers RF transceiver bias circuits and baseband analog sections in GSM/CDMA handsets. IC Role / Device Role / Timing Role: Low-noise 2.2V LDO delivering clean supply to sensitive VCOs and ADC front-ends. Use Value: 30µVRMS noise and 165mV dropout extend talk time and maintain EVM performance near battery end-of-life. |
Use Scenario: Supplies precision op-amps and 12-bit SAR ADCs in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Fixed-output voltage reference regulator with tight DC accuracy and low drift. Use Value: ±1.4% output tolerance and <100µA IQ ensure measurement repeatability and multi-year battery life. |
| PCMCIA Card Core Voltage | Electronic Planner System-on-Chip Rail |
Use Scenario: Provides regulated 2.2V core voltage to PCMCIA memory and I/O controllers in laptop expansion slots. IC Role / Device Role / Timing Role: Compact, thermally robust LDO meeting JEDEC MO-178 SOT23-5 mechanical constraints. Use Value: SOT23-5 '2982 pinout enables drop-in replacement; 150mA capacity supports burst-mode card access. |
Use Scenario: Powers microcontroller core and real-time clock in battery-backed PDAs and scheduling assistants. IC Role / Device Role / Timing Role: Always-on LDO with 10nA shutdown current preserving SRAM and RTC state during sleep. Use Value: Ultra-low shutdown current extends backup battery life beyond 12 months without recharge. |
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 |
|---|---|---|---|
| MAX8878EUK22+T | Includes auto-discharge function (300Ω discharge path); otherwise identical specs and pinout | Required where rapid output discharge during shutdown is needed (e.g., to prevent back-powering downstream logic) | Select MAX8878EUK22+T only if auto-discharge is mandatory; MAX8877EUK22+T avoids unnecessary discharge current in static-bias applications |
| MCP1700T-2202E/MB | 250mA max output, 175mV dropout at 250mA, 35µVRMS noise, SOT23-3 package (no BP pin) | Lacks BP noise-reduction capability and reverse battery protection; higher dropout limits usable input range | Choose MCP1700T-2202E/MB only for cost-sensitive, non-noise-critical designs where 3-pin simplicity outweighs 30µVRMS advantage |
Compared with MAX8877EUK22+T, the MAX8878EUK22+T adds auto-discharge at identical noise/dropout performance, while the MCP1700T-2202E/MB trades BP-enabled ultra-low noise and reverse protection for lower cost and higher current - but requires redesign due to SOT23-3 pinout and missing BP functionality.
Availability
MAX8877EUK22+T is available at Aetrix Electronics and suitable for cellular telephones, hand-held instruments, PCMCIA cards, and electronic planners requiring stable component supply, long-lifecycle support, and guaranteed -40°C to +85°C operation.
Supply support for MAX8877EUK22+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 quiescent current, and robust protection features in space-constrained SOT23-5 packages.
FAQ
What is the output voltage tolerance of the MAX8877EUK22+T over temperature and load?
The MAX8877EUK22+T guarantees ±1.4% output voltage accuracy across -40°C to +85°C ambient temperature and 0.1mA to 120mA load current, as confirmed in the Electrical Characteristics table. This tolerance holds for the factory-preset 2.2V output and ensures stable biasing for logic and analog circuitry without external trimming.
Does the MAX8877EUK22+T include reverse battery protection?
Yes, the MAX8877EUK22+T incorporates reverse battery protection that limits reverse current to ≤1mA when either the IN or SHDN pin falls below GND potential. This feature prevents damage during incorrect battery installation and is implemented via internal polarity-sensing circuitry that disconnects parasitic paths.
What capacitor values are required for stable operation of the MAX8877EUK22+T?
For stable operation, the MAX8877EUK22+T requires a 1µF ceramic input capacitor (CIN) and a 1µF ceramic output capacitor (COUT) with ESR < 0.2Ω. The BP pin requires a 0.01µF ceramic capacitor. These values are validated for 2.2V output across -40°C to +85°C and up to 150mA load per the Capacitor Selection section.
How does the MAX8877EUK22+T differ from the MAX8878EUK22+T?
The MAX8877EUK22+T and MAX8878EUK22+T share identical electrical specifications, pinout, and package, but the MAX8878EUK22+T adds an auto-discharge function that actively pulls the OUT pin to GND during shutdown via a 300Ω internal path. The MAX8877EUK22+T lacks this feature and maintains high-Z output in shutdown.
What is the thermal shutdown behavior of the MAX8877EUK22+T?
The MAX8877EUK22+T activates thermal shutdown at +155°C junction temperature and remains off until the die cools by 15°C (hysteresis), then resumes regulation. This pulsed operation prevents permanent damage during sustained overload and is independent of ambient temperature or PCB layout - though proper GND pad sizing is required for effective heat transfer.
MAX8877EUK22+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):
- 2.2V
- 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
MAX8877EUK22+T FAQ
1.How can I place an order for MAX8877EUK22+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8877EUK22+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 MAX8877EUK22+T reliable?
The price and inventory of MAX8877EUK22+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8877EUK22+T is usually 5 days.
3.What payment methods are accepted for MAX8877EUK22+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8877EUK22+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8877EUK22+T?
MAX8877EUK22+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8877EUK22+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 MAX8877EUK22+T?
For technical support, including MAX8877EUK22+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8877EUK22+T requirements.
6.How does Aetrix verify that MAX8877EUK22+T is sourced from the original manufacturer or authorized distributors?
All MAX8877EUK22+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 MAX8877EUK22+T meets industry standards.
7.What is the process for return or replacement of MAX8877EUK22+T?
All MAX8877EUK22+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8877EUK22+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 MAX8877EUK22+T part is unused and in its original packaging.
Return procedure for MAX8877EUK22+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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