My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8875EZK29-T
- Part No.:
- MAX8875EZK29-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX8875EZK29-T.pdf
- Description:
- 150MA, LOW-DROPOUT LINEAR REGULA
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX8875EZK29-T from Maxim Integrated is a low-noise, low-dropout linear regulator with 2.84V fixed output, 150mA maximum output current, 165mV dropout at full load, and 30µVRMS output noise. It features an internal P-channel MOSFET pass transistor, 100µA operating supply current (independent of load or dropout), and reverse battery protection. It is used in space-constrained, battery-powered handheld instruments requiring stable low-noise voltage regulation.
For engineers reviewing the MAX8875EZK29-T datasheet, MAX8875EZK29-T pinout, MAX8875EZK29-T application, or MAX8875EZK29-T equivalent, key selection criteria include dropout performance at 150mA, shutdown current (10nA), BP-capacitor–dependent noise reduction, thermal shutdown behavior (155°C), and SOT23-5 thin-package thermal resistance (110°C/W).
Technical Context
The MAX8875EZK29-T implements a P-channel MOSFET pass element with 1.1Ω typical RDS(ON), enabling low dropout and eliminating base-drive current loss. Its error amplifier compares a 1.25V bandgap reference against feedback from an internal resistor divider tied to OUT, delivering precise 2.84V regulation (±1.4% over temperature and load).
It integrates logic-controlled active-low SHDN with 10nA shutdown current and reverse-battery protection limiting reverse current to 1mA. The BP pin connects to a 0.01µF ceramic capacitor forming an 80Hz low-pass filter that reduces reference noise, directly enabling its 30µVRMS output noise specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.84V ±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) |
| Dropout Voltage | 165mV at 150mA (enables operation down to VIN = 3.005V for full-load 2.84V output) |
| Output Noise | 30µVRMS (10Hz–100kHz; requires 0.01µF BP capacitor and 10µF COUT) |
| Quiescent Current | 100µA (constant across load, input voltage, and dropout condition) |
| Shutdown Current | 10nA (logic-low SHDN; enables ultra-low-power system sleep modes) |
| Thermal Shutdown | 155°C activation with 15°C hysteresis (prevents permanent damage during sustained overload) |
Pinout & Package
MAX8875EZK29-T is housed in a 5-pin thin SOT23 package (JEDEC MO-178AA), optimized for low thermal resistance (θJB = 110°C/W) and PCB area efficiency. The GND pin serves as both electrical return and primary thermal path-requires connection to a large copper pour or ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input supply connection | Accepts 2.5V–6.5V; requires ≥1µF ceramic bypass to GND for stability and line-transient immunity |
| 2 GND | Power and thermal reference | Electrical ground return and primary heat sink; must be soldered to large copper area for thermal management |
| 3 SHDN | Active-low enable control | Logic-low (≤0.4V) disables regulator and reduces IQ to 10nA; no auto-discharge (MAX8878 feature only) |
| 4 BP | Bypass node for reference noise filtering | Connects to 0.01µF ceramic capacitor to reduce bandgap reference noise; determines output noise floor |
| 5 OUT | Regulated output terminal | Delivers up to 150mA at 2.84V; requires ≥3.3µF ceramic capacitor (ESR <0.2Ω) for VOUT <2.5V-here, 1µF suffices |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass transistor | Eliminates base-drive current loss, enabling constant 100µA IQ across all operating conditions including dropout |
| Reverse battery protection | Clamps reverse current to ≤1mA when IN or SHDN falls below GND-prevents damage in miswired battery compartments |
| 10nA logic-controlled shutdown | Enables µA-level system standby power; exit delay is ≤300µs with 0.1µF BP capacitor |
| Thermal overload protection | Shuts down at 155°C junction temperature and re-enables after 15°C cooldown-ensures safe operation under sustained overload |
| Pin-compatible with '2982 family | Direct drop-in replacement for legacy systems using industry-standard 5-pin SOT23 LDO footprints and pin assignments |
Applications
| Hand-Held Instruments | Palmtop Computers |
|---|---|
Use Scenario: Portable multimeters and data loggers powered by single-cell Li-ion or alkaline batteries. IC Role / Device Role / Timing Role: Primary 2.84V supply for precision ADCs, microcontrollers, and display drivers. Use Value: Low 30µVRMS noise prevents measurement offset drift; 165mV dropout extends usable battery life to ~2.95V cell voltage. |
Use Scenario: Compact palmtop PCs with integrated flash memory and touch controllers. IC Role / Device Role / Timing Role: Core voltage regulator for low-power ARM-based application processors. Use Value: 100µA quiescent current minimizes standby drain; thin SOT23-5 footprint saves board space in tight form factors. |
| Electronic Planners | PCMCIA Cards |
Use Scenario: Battery-backed PDAs with real-time clock, SRAM, and LCD interface. IC Role / Device Role / Timing Role: Always-on 2.84V rail for RTC and backup memory retention circuitry. Use Value: 10nA shutdown current preserves battery for >1 year in storage; reverse battery protection guards against user-insertion errors. |
Use Scenario: Hot-pluggable PCMCIA modems and network adapters drawing bursty 100mA loads. IC Role / Device Role / Timing Role: Local 2.84V regulator isolating card logic from noisy host bus power. Use Value: 12mV load-transient response (0→50mA step) ensures clean power during packet transmission bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, low-dropout LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8877EZK29-T | Same 2.84V output, identical pinout and package, but lacks MAX8878's auto-discharge function; shares all other specs including 100µA IQ and 30µVRMS noise | No active output discharge during shutdown-suitable where residual output hold-up is acceptable or required | Select MAX8877EZK29-T if auto-discharge is unnecessary and cost optimization is prioritized |
| TPS76328DBVR | 2.8V output (0.1V lower), 150mA rating, 25µVRMS noise, but higher 170mV dropout at 150mA and 85µA IQ; SOT23-5 package with same pinout | Slightly tighter output tolerance (±1%) but reduced dropout margin; lower noise but less robust reverse-battery protection | Choose TPS76328DBVR only if 2.8V (vs. 2.84V) is acceptable and system-level reverse-voltage risk is mitigated externally |
Compared with MAX8875EZK29-T, MAX8877EZK29-T offers identical regulation and efficiency without auto-discharge, while TPS76328DBVR trades 40mV higher dropout and 0.04V lower output for marginally lower noise and quiescent current-neither is pin- or functionally identical, but both serve overlapping portable LDO use cases.
Availability
MAX8875EZK29-T is available at Aetrix Electronics and suitable for hand-held instruments, palmtop computers, electronic planners, and PCMCIA cards requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX8875EZK29-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) designs high-performance analog and mixed-signal ICs for power management, sensing, and interface applications in industrial, automotive, and portable electronics.
The MAX8877/MAX8878 product line delivers ultra-low-noise, low-quiescent-current LDOs optimized for battery-powered handheld devices where runtime, signal integrity, and board space are critical constraints.
FAQ
What is the exact output voltage tolerance of the MAX8875EZK29-T over temperature and load?
The MAX8875EZK29-T guarantees ±1.4% output voltage accuracy across -40°C to +85°C ambient temperature and 0.1mA to 120mA load current. This is confirmed in the Electrical Characteristics table under "Output Voltage Accuracy" for VOUT < 2.5V and VOUT ≥ 2.5V conditions-2.84V falls in the latter group, where limits are ±2.0% at temperature extremes and ±1.4% at +25°C. The MAX8875EZK29-T maintains this spec without external trimming.
Does the MAX8875EZK29-T include auto-discharge functionality like the MAX8878 series?
No, the MAX8875EZK29-T does not include auto-discharge. Auto-discharge is exclusive to the MAX8878 variant (e.g., MAX8878EZK29-T), which actively pulls the OUT pin to GND during shutdown. The MAX8875EZK29-T is a MAX8877-series device and retains output voltage after shutdown unless externally discharged. This distinction is explicit in the Ordering Information table and Functional Diagram notes.
What capacitor values are required for stable operation of the MAX8875EZK29-T?
For stable operation, the MAX8875EZK29-T requires a 1µF ceramic input capacitor (CIN) and a minimum 1µF ceramic output capacitor (COUT) with ESR <0.2Ω. Since its 2.84V output exceeds 2.5V, the 1µF COUT value satisfies the datasheet requirement. A 0.01µF ceramic capacitor must also be placed on the BP pin to achieve the specified 30µVRMS noise performance.
What is the thermal resistance and maximum power dissipation of the MAX8875EZK29-T in its thin SOT23 package?
The MAX8875EZK29-T in thin SOT23-5 has θJB = 110°C/W. At +70°C ambient, its continuous power dissipation limit is 727mW, derating by 9.1mW/°C above that temperature. Maximum junction temperature is +150°C. These values are specified in the Absolute Maximum Ratings table and assume proper GND pad thermal coupling to PCB copper.
How does reverse battery protection work on the MAX8875EZK29-T, and what is its current limit?
The MAX8875EZK29-T monitors polarity on IN and SHDN pins; if either falls below GND, internal circuitry disconnects parasitic paths, limiting reverse current to ≤1mA. This protects downstream components during incorrect battery insertion. The feature is inherent to the MAX8877 architecture and is verified in the "Reverse Battery Protection" section of the datasheet-no external components are needed for this protection to function.
MAX8875EZK29-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX8875EZK29-T FAQ
1.How can I place an order for MAX8875EZK29-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8875EZK29-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 MAX8875EZK29-T reliable?
The price and inventory of MAX8875EZK29-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8875EZK29-T is usually 5 days.
3.What payment methods are accepted for MAX8875EZK29-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8875EZK29-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8875EZK29-T?
MAX8875EZK29-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8875EZK29-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 MAX8875EZK29-T?
For technical support, including MAX8875EZK29-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8875EZK29-T requirements.
6.How does Aetrix verify that MAX8875EZK29-T is sourced from the original manufacturer or authorized distributors?
All MAX8875EZK29-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 MAX8875EZK29-T meets industry standards.
7.What is the process for return or replacement of MAX8875EZK29-T?
All MAX8875EZK29-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8875EZK29-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 MAX8875EZK29-T part is unused and in its original packaging.
Return procedure for MAX8875EZK29-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8875EZK29-T 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
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…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
