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Analog Devices Inc./Maxim Integrated MAX8877EZK29
- Part No.:
- MAX8877EZK29
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8877EZK29.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:13,195
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Product details
Overview
MAX8877EZK29 from Maxim Integrated is a low-noise, low-dropout linear regulator with 2.84V preset output, 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 transistor and operates from 2.5V to 6.5V input, serving as a stable voltage source for battery-powered portable electronics.
For engineers reviewing the MAX8877EZK29 datasheet, MAX8877EZK29 pinout, MAX8877EZK29 application, or MAX8877EZK29 equivalent, key selection criteria include its thin SOT23-5 package, ±1.4% output voltage accuracy over temperature, 10nA shutdown current, reverse battery protection, and compatibility with industry-standard '2982 footprint.
Technical Context
The MAX8877EZK29 implements a P-channel MOSFET pass element with 1.1Ω typical RDS(ON), enabling low dropout and minimal quiescent current across load and input conditions. Its error amplifier compares a 1.25V bandgap reference against feedback from an internal resistor divider tied to the OUT pin.
Noise reduction is achieved via a dedicated BP pin with external 0.01µF capacitor forming an 80Hz low-pass filter; thermal shutdown activates at +155°C with 15°C hysteresis, and reverse battery protection limits reverse current to 1mA when IN or SHDN falls below GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.84V preset (±1.4% accuracy over -40°C to +85°C), factory-trimmed, no external resistors required |
| Max Output Current | 150mA continuous; current limit minimum 160mA ensures safe short-circuit operation |
| Dropout Voltage | 165mV at 150mA load - enables operation down to VIN = 3.005V while maintaining regulation |
| Output Noise | 30µVRMS (10Hz–100kHz) with 0.01µF BP cap - suitable for RF, ADC, and precision analog circuitry |
| Quiescent Current | 100µA over full load and dropout range - extends battery life in always-on portable devices |
| Shutdown Current | 10nA logic-controlled shutdown - reduces system standby power to nanoampere level |
| Input Voltage Range | 2.5V to 6.5V - supports single-cell Li-ion, multi-cell alkaline/NiMH, and USB-powered systems |
Pinout & Package
MAX8877EZK29 is housed in a thin 5-pin SOT23 package (SOT23-5 Thin), optimized for space-constrained portable designs. The package features exposed pad thermal enhancement and is compatible with standard SOT23 reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Regulator Input | Accepts 2.5V–6.5V supply; requires ≥1µF bypass capacitor to GND for stability and line transient rejection |
| 2 - GND | Ground / Thermal Pad | Primary return path and heatsink; must be soldered to large PCB copper area for thermal management |
| 3 - SHDN | Active-Low Shutdown Control | Logic-low (<0.4V) enables 10nA shutdown; high (>2.0V) enables regulation; connects to IN for always-on operation |
| 4 - BP | Bypass Reference Node | Connects 0.01µF ceramic capacitor to reduce reference noise; critical for achieving 30µVRMS output noise |
| 5 - OUT | Regulated Output | Delivers up to 150mA at 2.84V; requires ≥3.3µF output capacitor (low-ESR ceramic) for VOUT < 2.5V - here, 3.3µF suffices for 2.84V |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass transistor | Eliminates base-drive current loss, enabling constant 100µA IQ across load, dropout, and temperature |
| Reverse battery protection | Blocks reverse current to ≤1mA if IN or SHDN goes below GND - prevents damage in misinserted battery scenarios |
| Thermal shutdown with hysteresis | Shuts down at +155°C and restarts at +140°C - protects against sustained overload without latch-up |
| 10nA logic-controlled shutdown | Reduces system standby power by >4 orders of magnitude vs. active mode - essential for long-life IoT sensors |
| Pin-compatible with '2982 | Enables drop-in replacement in legacy designs using industry-standard 5-pin SOT23 footprint and pin assignment |
Applications
| Cellular Handsets | PCMCIA Cards |
|---|---|
Use Scenario: Powering baseband processor core voltage and RF front-end bias rails in GSM/CDMA handsets. IC Role / Device Role / Timing Role: Primary low-noise LDO supplying 2.84V to sensitive analog sections requiring clean, stable DC. Use Value: 30µVRMS noise and 165mV dropout extend usable battery range and prevent RF desense during transmit bursts. | Use Scenario: Providing regulated 2.84V to memory and interface logic in hot-pluggable PCMCIA Type II cards. IC Role / Device Role / Timing Role: Standby-power LDO with 10nA shutdown, enabling instant wake-up and zero-current card ejection. Use Value: Reverse battery protection prevents damage during insertion/removal; thin SOT23-5 fits tight card-edge height constraints. |
| Hand-Held Instruments | Electronic Planners |
Use Scenario: Supplying precision ADC reference and microcontroller I/O rails in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage source ensuring measurement accuracy across battery discharge cycle. Use Value: ±1.4% output accuracy and <100µA IQ maintain calibration integrity and >100-hour battery life on AA cells. | Use Scenario: Powering real-time clock (RTC), SRAM backup, and touch controller in palm-sized PDAs and organizers. IC Role / Device Role / Timing Role: Always-on LDO with ultra-low shutdown current supporting RTC retention during main power-off. Use Value: 10nA shutdown current enables >5-year SRAM data retention on coin-cell backup; thin package saves board volume. |
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 |
|---|---|---|---|
| MAX8877EUK29-T | Same electrical specs and pinout, but in regular (not thin) SOT23-5 package; θJB = 140°C/W vs. 110°C/W | Higher thermal resistance limits power dissipation in high-ambient or high-load scenarios | Select MAX8877EZK29-T where board height <1.1mm is mandatory and thermal margin allows |
| Torex XC6206P282MR-G | 2.8V output (vs. 2.84V), 100mA max output, 250mV dropout at 100mA, 40µVRMS noise, SOT23-5 | Lacks reverse battery protection and 10nA shutdown; lower output accuracy (±2%) | Choose for cost-sensitive, non-battery-reversal applications where 2.8V suffices and 150mA headroom is unnecessary |
Compared with MAX8877EUK29-T, MAX8877EZK29-T offers superior thermal performance in constrained spaces; versus XC6206P282MR-G, it delivers higher current, lower noise, tighter accuracy, and critical protection features - justifying use in premium portable designs.
Availability
MAX8877EZK29 is available at Aetrix Electronics and suitable for cellular handsets, PCMCIA cards, hand-held instruments, and electronic planners requiring stable component supply, long-term lifecycle support, and guaranteed thin-package form factor.
Supply support for MAX8877EZK29 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 markets.
The MAX8877/MAX8878 product line was designed specifically for battery-powered portable electronics demanding ultra-low noise, low dropout, and robust protection - targeting applications where runtime, signal integrity, and reliability are critical.
FAQ
What is the exact output voltage of MAX8877EZK29 and how is it set?
The MAX8877EZK29 has a factory-preset output voltage of 2.84V, trimmed to ±1.4% accuracy over -40°C to +85°C. This value is fixed internally via laser-trimmed resistors in the feedback divider - no external components are needed or supported. The '29' suffix in the part number directly encodes the 2.84V output per Maxim's expanded ordering table.
Does MAX8877EZK29 include reverse battery protection, and how does it work?
Yes, MAX8877EZK29 includes integrated reverse battery protection. When either the IN or SHDN pin falls below GND, internal circuitry disconnects parasitic paths and limits reverse current to ≤1mA. This prevents damage during incorrect battery insertion and eliminates the need for external blocking diodes or FETs in handheld designs.
What capacitor values are required for stable operation of MAX8877EZK29?
For stable operation, MAX8877EZK29 requires a 1µF ceramic input capacitor (X5R/X7R, low-ESR) and a minimum 3.3µF ceramic output capacitor (also X5R/X7R) due to its 2.84V output being <3.0V. A 0.01µF ceramic capacitor must be placed on the BP pin to achieve specified 30µVRMS noise performance and ensure regulator stability across temperature.
How does the thermal shutdown behavior of MAX8877EZK29 affect system reliability?
MAX8877EZK29 shuts down at +155°C junction temperature and restarts at +140°C (15°C hysteresis). Under continuous overload, this causes pulsed output rather than latch-up, allowing self-cooling and preventing permanent damage. This behavior maintains system-level safety without requiring external thermal monitoring, making it ideal for sealed portable enclosures.
Is MAX8877EZK29 pin-compatible with the industry-standard '2982 regulator?
Yes, MAX8877EZK29 is fully pin-compatible with the industry-standard '2982 family. It uses identical SOT23-5 pinout (IN, GND, SHDN, BP, OUT), same footprint, and matching electrical interface - enabling direct replacement in existing '2982-based designs without PCB changes or layout modification.
MAX8877EZK29 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 2.84V
- 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:
- TSOT-23-5
MAX8877EZK29 FAQ
1.How can I place an order for MAX8877EZK29 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8877EZK29 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 MAX8877EZK29 reliable?
The price and inventory of MAX8877EZK29 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8877EZK29 is usually 5 days.
3.What payment methods are accepted for MAX8877EZK29?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8877EZK29 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8877EZK29?
MAX8877EZK29 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8877EZK29 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 MAX8877EZK29?
For technical support, including MAX8877EZK29 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8877EZK29 requirements.
6.How does Aetrix verify that MAX8877EZK29 is sourced from the original manufacturer or authorized distributors?
All MAX8877EZK29 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 MAX8877EZK29 meets industry standards.
7.What is the process for return or replacement of MAX8877EZK29?
All MAX8877EZK29 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8877EZK29, 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 MAX8877EZK29 part is unused and in its original packaging.
Return procedure for MAX8877EZK29:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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