My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8878EZK18
- Part No.:
- MAX8878EZK18
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MAX8878EZK18.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:1,860
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX8878EZK18 from Maxim Integrated is a low-noise, low-dropout linear regulator with 1.8V preset output, 150mA max output current, 165mV dropout at full load, 30µVRMS output noise, and integrated auto-discharge function. It operates from 2.5V to 6.5V input and targets battery-powered portable electronics requiring stable, quiet voltage regulation.
For engineers reviewing the MAX8878EZK18 datasheet, MAX8878EZK18 pinout, MAX8878EZK18 application, or MAX8878EZK18 equivalent, this device is selected for ultra-low quiescent current (100µA), reverse-battery protection, thermal shutdown, and precise ±1.4% output accuracy in space-constrained SOT23-5 thin packages.
Technical Context
The MAX8878EZK18 uses an internal P-channel MOSFET pass transistor with ~1.1Ω 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 the OUT pin.
It integrates logic-controlled shutdown (10nA ISHDN), thermal shutdown at +155°C with 15°C hysteresis, short-circuit protection, and-uniquely versus MAX8877-a dedicated auto-discharge path (300Ω) that actively pulls OUT to GND during shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.80V ±1.4% (factory-preset; no external resistors required) |
| Max Output Current | 150mA continuous; supports peak loads without foldback |
| Dropout Voltage | 165mV at 150mA (enables operation down to 1.96V input at end-of-battery life) |
| Output Noise | 30µVRMS (10Hz–100kHz; enables clean supply for RF/analog circuits) |
| Quiescent Current | 100µA (constant across load and dropout; extends battery runtime) |
| Shutdown Current | 10nA (logic-controlled; preserves battery charge during deep sleep) |
| Auto-Discharge | Active 300Ω discharge path on OUT during SHDN (prevents floating outputs) |
Pinout & Package
MAX8878EZK18 is housed in a 5-pin thin SOT23 package (JEDEC MO-178AA), optimized for thermal performance (θJB = 110°C/W) and PCB area efficiency. The GND pin serves dual role as electrical ground and thermal heatsink-requires connection to large copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input supply rail | Accepts 2.5V–6.5V; bypass with ≥1µF ceramic capacitor to GND for stability |
| 2 GND | Ground reference & thermal path | Electrical return and primary heat conduction path; must connect to large PCB ground plane |
| 3 SHDN | Active-low enable control | Pull low to enter 10nA shutdown; triggers auto-discharge on MAX8878EZK18 only |
| 4 BP | Bypass node for reference noise filtering | Connects to 0.01µF ceramic capacitor to reduce output noise by creating 80Hz LPF |
| 5 OUT | Regulated output | Delivers up to 150mA at 1.8V; bypass with ≥3.3µF ceramic cap (for VOUT < 2.5V) |
Key Features
| Feature | Design Value |
|---|---|
| P-channel MOSFET pass element | Eliminates base-drive current loss; maintains 100µA IQ across all load/dropout conditions |
| Auto-discharge circuit | 300Ω active pull-down on OUT during shutdown-prevents unintended biasing of downstream circuitry |
| Reverse battery protection | Limits reverse current to ≤1mA if VIN or SHDN falls below GND-protects IC and system during battery insertion errors |
| Thermal shutdown with hysteresis | Shuts down at +155°C; re-enables after 15°C cooldown-prevents latch-up during sustained overload |
| 1.8V ±1.4% factory-trimmed output | Guaranteed accuracy over -40°C to +85°C; eliminates need for external feedback resistors or calibration |
Applications
| Cellular Handsets | PCMCIA Cards |
|---|---|
Use Scenario: Powering baseband processor core voltage in GSM/CDMA handsets with Li-ion battery input. IC Role / Device Role / Timing Role: Primary 1.8V LDO delivering clean, low-noise supply to digital logic under dynamic load transients. Use Value: 165mV dropout extends usable battery range; 30µVRMS noise prevents digital switching noise from coupling into RF sections. |
Use Scenario: Regulating 1.8V supply for PCMCIA card controller and interface logic in laptop expansion slots. IC Role / Device Role / Timing Role: Standby-power-optimized LDO providing always-on rail with 10nA shutdown current. Use Value: Auto-discharge ensures rapid power-down of card circuitry when host removes power, meeting PCMCIA hot-swap requirements. |
| Palmtop Computers | Electronic Planners |
Use Scenario: Supplying 1.8V to microcontroller and SRAM in handheld PDAs with tight board space constraints. IC Role / Device Role / Timing Role: Space-efficient thin-SOT23 LDO with integrated thermal protection for thermally isolated modules. Use Value: θJB = 110°C/W and GND-as-heatsink design allow reliable 150mA operation without external thermal relief. |
Use Scenario: Providing regulated 1.8V for real-time clock (RTC), memory, and display driver in battery-backed organizers. IC Role / Device Role / Timing Role: Low-quiescent-current LDO maintaining precision voltage during multi-year backup battery operation. Use Value: 100µA operating current and ±1.4% output accuracy ensure long-term timekeeping stability and memory retention. |
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 |
|---|---|---|---|
| MAX8877EZK18-T | No auto-discharge; identical pinout, specs, and package | Not suitable where active output discharge is required during shutdown | Select MAX8878EZK18-T when downstream circuitry must be fully discharged on disable |
| Torex XC6206P182MR-G | 180mA max output; 250mV dropout at 150mA; no auto-discharge; 1.8V ±2% accuracy | Higher dropout limits usable battery range; wider voltage tolerance reduces regulation precision | Consider only if cost sensitivity outweighs noise, dropout, and discharge requirements |
Compared with MAX8877EZK18-T, MAX8878EZK18-T adds critical auto-discharge functionality without trade-offs in noise, dropout, or quiescent current; versus XC6206P182MR-G, it delivers tighter accuracy, lower noise, and lower dropout-justifying selection where signal integrity and battery life are prioritized.
Availability
MAX8878EZK18 is available at Aetrix Electronics and suitable for cellular handsets, PCMCIA cards, palmtop computers, and electronic planners requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MAX8878EZK18 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 communication applications.
The MAX8877/MAX8878 family was engineered specifically for battery-powered portable devices needing ultra-low-noise, low-quiescent-current regulation with robust protection features in minimal footprint.
FAQ
What is the output voltage tolerance of MAX8878EZK18 over temperature and load?
The MAX8878EZK18 guarantees ±1.4% output voltage accuracy across -40°C to +85°C ambient temperature and 0.1mA to 120mA load current for 1.8V output. This specification is validated per Maxim's production test flow and applies to all units shipped, ensuring consistent regulation without post-manufacturing trimming.
Does MAX8878EZK18 require an external BP capacitor, and what value is recommended?
Yes, MAX8878EZK18 requires a 0.01µF ceramic capacitor between BP and GND to achieve its specified 30µVRMS output noise. Using values >0.1µF increases startup time without improving noise performance, while smaller values degrade noise reduction-so 0.01µF is the optimal, validated value for MAX8878EZK18.
How does the auto-discharge function operate in MAX8878EZK18, and what is its resistance?
When SHDN is pulled low, MAX8878EZK18 activates an internal 300Ω discharge path between OUT and GND. This actively pulls the output voltage to ground within microseconds, preventing residual charge from powering downstream circuitry-unlike MAX8877EZK18, which lacks this feature entirely.
What is the maximum allowable input voltage for MAX8878EZK18, and what happens beyond that?
The absolute maximum input voltage for MAX8878EZK18 is +7V referenced to GND. Exceeding this rating-even briefly-may cause permanent damage. Operation above 6.5V violates the recommended operating conditions and risks junction overheating or oxide breakdown, regardless of duration or current level.
Can MAX8878EZK18 be used with ceramic output capacitors, and what ESR range is stable?
Yes, MAX8878EZK18 is stable with ceramic output capacitors ≥3.3µF (for 1.8V output) and typical ESR < 0.2Ω. The device's internal compensation is optimized for low-ESR ceramics; using higher-ESR types (e.g., tantalum) may cause instability or excessive overshoot during load transients.
MAX8878EZK18 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):
- 1.8V
- 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
MAX8878EZK18 FAQ
1.How can I place an order for MAX8878EZK18 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8878EZK18 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 MAX8878EZK18 reliable?
The price and inventory of MAX8878EZK18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8878EZK18 is usually 5 days.
3.What payment methods are accepted for MAX8878EZK18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8878EZK18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8878EZK18?
MAX8878EZK18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8878EZK18 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 MAX8878EZK18?
For technical support, including MAX8878EZK18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8878EZK18 requirements.
6.How does Aetrix verify that MAX8878EZK18 is sourced from the original manufacturer or authorized distributors?
All MAX8878EZK18 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 MAX8878EZK18 meets industry standards.
7.What is the process for return or replacement of MAX8878EZK18?
All MAX8878EZK18 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8878EZK18, 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 MAX8878EZK18 part is unused and in its original packaging.
Return procedure for MAX8878EZK18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8878EZK18 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…
