My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8877EZK25
- Part No.:
- MAX8877EZK25
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8877EZK25.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:2,189
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX8877EZK25 from Maxim Integrated is a low-noise, low-dropout linear regulator with fixed 2.5V output, delivering up to 150mA from a 2.5V–6.5V input. It features 30µVRMS output noise, 165mV dropout at 150mA, and 100µA operating supply current independent of load or dropout condition. Designed for battery-powered portable electronics, it integrates reverse-battery protection and thermal shutdown.
For engineers reviewing the MAX8877EZK25 datasheet, MAX8877EZK25 pinout, MAX8877EZK25 application, or MAX8877EZK25 equivalent, key selection criteria include its SOT23-5 thin-package footprint, 2.5V ±1.4% output accuracy, 10nA logic-controlled shutdown, and compatibility with industry-standard '2982 pinout for drop-in replacement in space-constrained designs.
Technical Context
The MAX8877EZK25 uses an internal P-channel MOSFET pass transistor (1.1Ω typical RDS(ON)) enabling ultra-low quiescent current (100µA) across all operating conditions - including dropout - and eliminating base-drive losses inherent in PNP-based regulators. Its feedback loop references a 1.25V bandgap and employs an internal resistor divider to set the 2.5V output without external components.
Noise reduction is achieved via a dedicated BP pin with a 0.01µF ceramic capacitor forming an 80Hz low-pass filter; this yields 30µVRMS integrated noise (10Hz–100kHz) and supports stable operation with ≥1µF output capacitance for VOUT ≥ 2.5V. Thermal protection activates at +155°C with 15°C hysteresis, and reverse-battery protection limits reverse current to 1mA when IN or SHDN falls below ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1.4% over -40°C to +85°C; eliminates need for external feedback resistors and simplifies layout. |
| Max Output Current | 150mA continuous; sufficient for RF front-ends, microcontroller cores, and sensor signal chains in portable devices. |
| Dropout Voltage | 165mV at 150mA; enables operation down to 2.665V input, extending usable battery life in single-cell Li-ion or alkaline systems. |
| Output Noise | 30µVRMS (10Hz–100kHz); low enough for noise-sensitive analog circuits like ADC references and RF synthesizers. |
| Quiescent Current | 100µA at full load and in dropout; ensures minimal standby drain in always-on subsystems such as real-time clocks or wake-up controllers. |
| Shutdown Current | 10nA logic-controlled shutdown; reduces system-level leakage during deep sleep modes in handheld instruments and modems. |
| Input Voltage Range | 2.5V to 6.5V; supports single-cell Li-ion (2.7–4.2V), dual-cell alkaline (3–3.2V), and regulated 5V rails. |
Pinout & Package
MAX8877EZK25 is housed in a 5-pin thin SOT23 package (JEDEC MO-178AA), optimized for high-density PCB layouts and improved thermal performance (θJB = 110°C/W). The GND pin serves as both electrical reference and thermal path - requiring connection to a large copper pour for optimal power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Regulator input supply | Accepts 2.5V–6.5V; requires ≥1µF ceramic bypass to GND for stability and line-transient immunity. |
| 2 - GND | Ground reference and thermal sink | Must be connected to PCB ground plane; doubles as primary heat conduction path - critical for >100mW dissipation. |
| 3 - SHDN | Active-low enable/shutdown control | Logic low (≤0.4V) disables regulator and draws only 10nA; tied to IN for always-on operation. |
| 4 - BP | Bypass node for reference noise filtering | Connects to 0.01µF ceramic capacitor to reduce output noise; values >0.1µF increase startup time without benefit. |
| 5 - OUT | Regulated 2.5V output | Sources up to 150mA; requires ≥1µF low-ESR ceramic capacitor (≤0.2Ω) for stability with VOUT ≥ 2.5V. |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass element | 1.1Ω typical RDS(ON) enables 100µA quiescent current regardless of load or dropout - no base-drive loss or saturation penalty. |
| Reverse battery protection | Automatically disconnects internal circuitry when IN or SHDN falls below GND, limiting reverse current to ≤1mA and preventing damage. |
| Thermal overload protection | Shuts down at +155°C junction temperature with 15°C hysteresis, allowing safe pulsed operation under sustained overload without latch-up. |
| '2982 pinout compatibility | Direct mechanical and functional replacement for legacy industry-standard regulators - no PCB redesign required. |
| Output voltage accuracy | ±1.4% over -40°C to +85°C ensures reliable operation of 2.5V-tolerant logic, ADC references, and precision analog blocks. |
Applications
| Cellular Telephone Power Management | PCMCIA Card Voltage Regulation |
|---|---|
Use Scenario: Supplying clean 2.5V bias to RF transceiver ICs and baseband processors in GSM/CDMA handsets. IC Role / Device Role / Timing Role: Primary LDO for noise-sensitive RF sections, replacing switching regulators to avoid EMI coupling into antenna paths. Use Value: 30µVRMS noise and 63dB PSRR at low frequencies prevent AM modulation on transmit carriers and maintain receiver sensitivity. |
Use Scenario: Providing regulated 2.5V to PCMCIA Type II card controllers and interface logic in laptops and industrial terminals. IC Role / Device Role / Timing Role: Local point-of-load regulator ensuring stable I/O voltage during hot-insertion and bus arbitration events. Use Value: 150mA current capability and fast load-transient response (<12mV deviation for 0→50mA step) prevent data corruption during burst transfers. |
| Hand-Held Instrument Analog Front-End | Palmtop Computer Core Logic Supply |
Use Scenario: Powering 2.5V reference inputs and op-amp stages in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Precision analog supply isolating sensitive measurement circuitry from noisy digital domains. Use Value: ±1.4% output accuracy and low drift over temperature ensure <1 LSB error in 12-bit ADC systems across -40°C to +85°C. |
Use Scenario: Delivering 2.5V to ARM7 or MIPS-based application processors and SRAM in palmtop PDAs. IC Role / Device Role / Timing Role: Main core voltage regulator supporting dynamic voltage scaling and deep-sleep states. Use Value: 10nA shutdown current and 100µA active quiescent current extend battery runtime by >20% versus standard LDOs in intermittent-use applications. |
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 |
|---|---|---|---|
| MAX8877EUK25-T | Same silicon, regular (not thin) SOT23-5 package; θJB = 140°C/W vs. 110°C/W for EZK variant. | Higher thermal resistance limits max continuous power in compact enclosures; suitable where board area allows larger thermal pad. | Select MAX8877EUK25-T if standard SOT23-5 footprint is already used and thermal margin exceeds 20°C. |
| TCS2115-2.5 | 2.5V LDO with 25µVRMS noise and 150mV dropout at 150mA; no reverse-battery protection or BP pin. | Lacks reverse-polarity hardening and programmable noise filtering - unsuitable for battery-reversal-prone consumer handhelds. | Choose TCS2115-2.5 only in cost-sensitive, non-battery-reversal applications where 5µVRMS noise advantage is critical. |
Compared with MAX8877EZK25, MAX8877EUK25-T offers identical electrical performance but reduced thermal efficiency in space-constrained designs, while TCS2115-2.5 trades robustness (no reverse-battery or BP filtering) for marginally lower noise - making MAX8877EZK25 the optimal choice for ruggedized portable electronics requiring guaranteed reliability and design flexibility.
Availability
MAX8877EZK25 is available at Aetrix Electronics and suitable for cellular telephones, PCMCIA cards, and hand-held instruments requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX8877EZK25 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 demanding ultra-low noise, low quiescent current, and robust fault protection - targeting cellular handsets, modems, and handheld test equipment.
FAQ
What is the maximum input voltage rating for the MAX8877EZK25?
The MAX8877EZK25 has an absolute maximum input voltage of +7V relative to GND. However, its specified operating range is 2.5V to 6.5V. Exceeding 6.5V may cause permanent damage or violate safety margins defined in the Absolute Maximum Ratings table. Always maintain VIN ≤ 6.5V in normal operation to ensure reliability and compliance with datasheet specifications for the MAX8877EZK25.
Does the MAX8877EZK25 require an external feedback resistor network?
No, the MAX8877EZK25 does not require external feedback resistors. It features a factory-preset 2.5V output implemented via an internal resistor divider referenced to a 1.25V bandgap. This eliminates component count, layout area, and tolerance-induced output errors - a key design advantage confirmed in the Detailed Description and Pin Configuration sections of the MAX8877EZK25 datasheet.
Can the MAX8877EZK25 be used with ceramic output capacitors?
Yes, the MAX8877EZK25 is fully compatible with ceramic output capacitors. For VOUT = 2.5V, a minimum 1µF X7R or X5R ceramic capacitor (ESR ≤ 0.2Ω) is recommended. Z5U/Y5V dielectrics may require ≥2µF at low temperatures to maintain stability. This requirement is explicitly validated in the Capacitor Selection section and Region of Stable COUT ESR graph for the MAX8877EZK25.
What protection features are integrated into the MAX8877EZK25?
The MAX8877EZK25 integrates thermal shutdown (+155°C activation, 15°C hysteresis), short-circuit protection (indefinite output short to GND), reverse-battery protection (≤1mA reverse current), and current limiting (160–390mA range). These protections are documented in the Absolute Maximum Ratings, Electrical Characteristics, and Detailed Description sections - all confirmed for the MAX8877EZK25 variant.
Is the BP pin mandatory for stable operation of the MAX8877EZK25?
The BP pin is not mandatory for basic regulation but is required to achieve the specified 30µVRMS output noise. Leaving BP unconnected degrades noise performance and may affect transient response. A 0.01µF ceramic capacitor must be placed between BP and GND per the datasheet's Noise Reduction and Typical Operating Characteristics sections - a verified design requirement for the MAX8877EZK25.
MAX8877EZK25 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):
- 2.5V
- 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
MAX8877EZK25 FAQ
1.How can I place an order for MAX8877EZK25 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8877EZK25 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 MAX8877EZK25 reliable?
The price and inventory of MAX8877EZK25 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8877EZK25 is usually 5 days.
3.What payment methods are accepted for MAX8877EZK25?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8877EZK25 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8877EZK25?
MAX8877EZK25 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8877EZK25 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 MAX8877EZK25?
For technical support, including MAX8877EZK25 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8877EZK25 requirements.
6.How does Aetrix verify that MAX8877EZK25 is sourced from the original manufacturer or authorized distributors?
All MAX8877EZK25 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 MAX8877EZK25 meets industry standards.
7.What is the process for return or replacement of MAX8877EZK25?
All MAX8877EZK25 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8877EZK25, 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 MAX8877EZK25 part is unused and in its original packaging.
Return procedure for MAX8877EZK25:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8877EZK25 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
