My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8867EZK29+T
- Part No.:
- MAX8867EZK29+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8867EZK29+T.pdf
- Description:
- IC REG LIN 2.84V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,135
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX8867EZK29+T from Maxim Integrated is a low-noise, low-dropout linear regulator with 2.84V preset output voltage, 150mA output current capability, 30µVRMS output noise, and 165mV dropout at full load - designed for space-constrained battery-powered systems such as handheld instruments and PCMCIA cards.
For engineers reviewing the MAX8867EZK29+T datasheet, MAX8867EZK29+T pinout, MAX8867EZK29+T application, or MAX8867EZK29+T equivalent, key selection criteria include ultra-low quiescent current (100µA), reverse battery protection, thermal shutdown behavior, and BP-capacitor–dependent noise performance in thin SOT23-5 packaging.
Technical Context
The MAX8867EZK29+T uses an internal P-channel MOSFET pass transistor (1.1Ω typical RDS(ON)) to achieve low dropout and eliminate base-drive current losses. 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; shutdown control is active-low with 10nA supply current and includes auto-discharge only on MAX8868 variants - not applicable to MAX8867EZK29+T.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.84V ±1.4% - factory-preset, eliminates external feedback resistors and ensures stable regulation across -40°C to +85°C. |
| Max Output Current | 150mA - supports moderate-power analog/digital rails without external current boosting. |
| Dropout Voltage | 165mV at 150mA - enables operation down to VIN = 3.005V, extending usable battery life in single-cell Li-ion or alkaline systems. |
| Output Noise | 30µVRMS (10Hz–100kHz) - achieved with 0.01µF BP capacitor; critical for RF, ADC, and precision analog subsystems. |
| Quiescent Current | 100µA - constant across load and dropout conditions, enabling multi-day standby in portable devices. |
| Shutdown Current | 10nA - logic-controlled disable reduces system leakage during sleep modes. |
| Input Voltage Range | 2.5V to 6.5V - compatible with single-cell Li-ion (2.7–4.2V), NiMH (0.9–1.4V × 3), and regulated 3.3V/5V supplies. |
Pinout & Package
MAX8867EZK29+T is housed in a thin 5-pin SOT23 package (JEDEC MO-178AA), with GND serving dual electrical and thermal functions - requires soldering to a large PCB copper area for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SHDN | Active-low enable input | Pull low to enter 10nA shutdown; connect to IN for always-on operation; no auto-discharge (MAX8868 feature only). |
| 2 - GND | Ground reference and thermal path | Must be connected to large PCB ground plane to dissipate heat and maintain stability under 150mA load. |
| 3 - IN | Regulator input | Accepts 2.5V–6.5V; requires ≥1µF bypass capacitor to suppress supply noise and ensure transient response. |
| 4 - OUT | Regulated output | Delivers 2.84V up to 150mA; requires ≥1µF low-ESR output capacitor for stability across temperature and load. |
| 5 - BP | Noise-reduction bypass node | Connects to 0.01µF ceramic capacitor to reduce output noise; start-up time increases with larger values. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse Battery Protection | Limits reverse current to ≤1mA when VIN or SHDN falls below GND - prevents damage during incorrect battery insertion. |
| Thermal Shutdown | Activates at +170°C junction temperature with 20°C hysteresis - protects against sustained overload without requiring external circuitry. |
| Current Limit | Guaranteed ≥160mA minimum limit (390mA typical) - allows safe short-circuit operation indefinitely without latch-off. |
| Load Regulation | 0.01%/mA - maintains tight output voltage over 0–150mA load range, reducing need for post-regulation filtering. |
| Line Regulation | ±0.15%/V - minimizes output drift across full 2.5V–6.5V input range, improving reliability in variable-supply environments. |
Applications
| Hand-Held Instruments | PCMCIA Cards |
|---|---|
Use Scenario: Portable multimeters and data loggers powered by two AA/AAA cells with dynamic load switching between measurement and display modes. IC Role / Device Role / Timing Role: Primary 2.84V supply for microcontroller, ADC, and LCD bias circuitry - delivering clean, stable voltage during rapid load transients. Use Value: 30µVRMS noise and 12mV load-step response (0–50mA) preserve ADC accuracy and prevent display flicker without additional LDO staging. |
Use Scenario: Hot-pluggable PCMCIA memory or modem cards operating from host 3.3V bus with strict inrush and ESD requirements. IC Role / Device Role / Timing Role: Local 2.84V rail generator with reverse battery and short-circuit protection - isolating card circuitry from host supply faults. Use Value: 10nA shutdown current and reverse polarity immunity meet PCMCIA Type II power-down specifications while enabling instant wake-up. |
| Palmtop Computers | Cordless Telephones |
Use Scenario: Compact PDAs with integrated GPS and Bluetooth, requiring low-noise 2.84V for RF front-end and baseband ICs. IC Role / Device Role / Timing Role: Dedicated low-noise LDO for sensitive analog sections - decoupling noisy digital domains while maintaining PSRR >60dB below 10kHz. Use Value: BP pin filtering and 63dB PSRR at low frequency suppress coupling from CPU switching noise into GNSS receivers. |
Use Scenario: DECT cordless handsets using single-cell Li-ion with deep discharge recovery and frequent transmit bursts. IC Role / Device Role / Timing Role: Main 2.84V supply for DSP, audio codec, and RF transceiver - sustaining regulation down to 3.005V input during peak transmit current. Use Value: 165mV dropout at 150mA extends talk time by ~12% compared to standard 300mV-dropout LDOs at end-of-battery voltage. |
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 |
|---|---|---|---|
| MAX8867EUK29+T | Same electrical specs but in regular (not thin) SOT23-5 package - 0.95mm height vs. 0.85mm for EZK variant. | Suitable where board clearance allows standard SOT23; slightly higher thermal resistance (140°C/W vs. 110°C/W). | Select when mechanical stack-up permits taller profile and thermal margin is sufficient. |
| MCP1702T-2802E/MB | 2.8V output (vs. 2.84V), 250mA rating, 17µVRMS noise, but no BP pin or reverse battery protection. | Lacks reverse polarity hardening and fine-grained noise tuning - requires external protection diodes in battery-reversal-prone designs. | Choose only if lower noise and higher current outweigh missing protections and fixed 2.8V output. |
Compared with MAX8867EZK29+T, the MAX8867EUK29+T offers identical regulation performance in a mechanically taller package with reduced thermal efficiency, while the MCP1702T-2802E/MB trades away reverse-battery immunity and BP-based noise optimization for higher output current and marginally lower noise - making it unsuitable for unattended battery-reversal environments.
Availability
MAX8867EZK29+T is available at Aetrix Electronics and suitable for handheld instruments, PCMCIA cards, palmtop computers, and cordless telephones requiring stable component supply, long-term lifecycle support, and guaranteed parametric compliance across industrial temperature range.
Supply support for MAX8867EZK29+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 MAX8867/MAX8868 product line was engineered specifically for ultra-low-noise, low-quiescent-current regulation in compact, battery-operated portable electronics - prioritizing dropout, noise, and protection features over cost or integration density.
FAQ
What is the exact output voltage tolerance of the MAX8867EZK29+T?
The MAX8867EZK29+T has a factory-preset output voltage of 2.84V with ±1.4% initial accuracy over temperature and load. This specification is guaranteed across the full -40°C to +85°C operating range and includes variation due to line, load, and thermal effects - no external trimming is possible or required.
Does the MAX8867EZK29+T include auto-discharge functionality during shutdown?
No, the MAX8867EZK29+T does not provide auto-discharge. That feature is exclusive to the MAX8868 family (e.g., MAX8868EZK29+T). When the MAX8867EZK29+T is placed in shutdown via the SHDN pin, the output remains floating at its last regulated voltage until discharged externally or through load leakage.
What capacitor values are required for stable operation of the MAX8867EZK29+T?
The MAX8867EZK29+T requires a minimum 1µF ceramic input capacitor (X7R/X5R dielectric) and a 1µF–10µF output capacitor with ESR <0.2Ω. A 0.01µF ceramic capacitor must be placed directly on the BP pin. Using Z5U/Y5V dielectrics may require ≥2.2µF output capacitance for stability below -10°C.
Can the MAX8867EZK29+T operate from a 2.5V input while delivering 150mA at 2.84V?
No - the MAX8867EZK29+T cannot regulate at 2.84V from a 2.5V input. Its minimum input voltage is defined by dropout: VIN ≥ VOUT + VDROP. At 150mA, VDROP = 165mV, so minimum VIN = 2.84V + 0.165V = 3.005V. Operation below this violates regulation and causes output collapse.
Is reverse battery protection active on both IN and SHDN pins of the MAX8867EZK29+T?
Yes - reverse battery protection operates independently on both IN and SHDN pins. If either pin falls more than 0.3V below GND, internal circuitry disconnects parasitic paths and limits reverse current to ≤1mA, safeguarding the device during incorrect battery installation or accidental polarity reversal.
MAX8867EZK29+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 2.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.165V @ 150mA (Typ)
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 180 µA
- Current - Supply (Max):
- 100 µA
- PSRR:
- 63dB (10kHz)
- 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
MAX8867EZK29+T FAQ
1.How can I place an order for MAX8867EZK29+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8867EZK29+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 MAX8867EZK29+T reliable?
The price and inventory of MAX8867EZK29+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8867EZK29+T is usually 5 days.
3.What payment methods are accepted for MAX8867EZK29+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8867EZK29+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8867EZK29+T?
MAX8867EZK29+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8867EZK29+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 MAX8867EZK29+T?
For technical support, including MAX8867EZK29+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8867EZK29+T requirements.
6.How does Aetrix verify that MAX8867EZK29+T is sourced from the original manufacturer or authorized distributors?
All MAX8867EZK29+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 MAX8867EZK29+T meets industry standards.
7.What is the process for return or replacement of MAX8867EZK29+T?
All MAX8867EZK29+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8867EZK29+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 MAX8867EZK29+T part is unused and in its original packaging.
Return procedure for MAX8867EZK29+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8867EZK29+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
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
