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Analog Devices Inc./Maxim Integrated MAX8840EYT27+T
- Part No.:
- MAX8840EYT27+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-UFLGA
- Datasheet:
-
MAX8840EYT27+T.pdf
- Description:
- IC REG LINEAR 2.7V 150MA 6UTLGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,221
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Product details
Overview
MAX8840EYT27+T from Maxim Integrated is a 2.7V preset, ultra-low-noise, high-PSRR, low-dropout linear regulator delivering up to 150mA output current with 120mV dropout at 120mA load, 11µVRMS output noise (100Hz–100kHz), and 78dB PSRR at 1kHz. It uses a p-channel MOSFET pass transistor, achieves 40µA ground current, and operates from 2V to 6V input - ideal for powering RF sections in Bluetooth radios and precision analog blocks in portable cameras.
For engineers reviewing the MAX8840EYT27+T datasheet, MAX8840EYT27+T pinout, MAX8840EYT27+T application, or MAX8840EYT27+T equivalent, key selection criteria include its 2.7V fixed output, µDFN-6 (1.5mm × 1.0mm) package, BP pin-enabled noise suppression, guaranteed 150mA output, and compatibility with 1µF ceramic output capacitance for stability across all loads.
Technical Context
The MAX8840EYT27+T implements a bandgap-based error amplifier driving a 1Ω (typ) p-channel MOSFET pass transistor, enabling low quiescent current and minimal dropout voltage dependence on load. Its dedicated BP (bypass) pin connects to a 10nF capacitor to shunt high-frequency noise from the internal reference, directly enabling the 11µVRMS noise performance.
Shutdown is controlled via the SHDN pin (logic-low active), reducing supply current to <1µA; during shutdown, the BP pin is shorted to OUT. The device integrates overcurrent limiting (150–300mA range), thermal shutdown at +160°C with 10°C hysteresis, and operates across –40°C to +85°C without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7V ±3% - ensures stable bias for 2.7V-tolerant RF ICs and ADC references without external feedback components. |
| Max Output Current | 150mA - sufficient to power baseband processors or dual-band transceivers in compact portable devices. |
| Dropout Voltage | 120mV at 120mA - enables operation down to VIN = 2.82V, extending usable battery life in single-cell Li-ion systems. |
| Output Noise | 11µVRMS (100Hz–100kHz) - critical for preserving SNR in audio codecs and RF synthesizer VCO supplies. |
| PSRR | 78dB at 1kHz, 54dB at 100kHz - suppresses switching noise from DC/DC converters feeding the LDO input. |
| Ground Current | 40µA (no load), 220µA (in dropout) - minimizes standby power loss in always-on sensor nodes and IoT endpoints. |
| Input Voltage Range | 2V to 6V - supports direct connection to single-cell Li-ion (2.7–4.2V), USB (4.75–5.25V), or boosted 3.3V rails. |
Pinout & Package
MAX8840EYT27+T is housed in a lead-free, RoHS-compliant 6-pin µDFN package measuring 1.5mm × 1.0mm × 0.8mm, with exposed thermal pad (GND-connected) for enhanced heat dissipation in space-constrained layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Unregulated Input Supply | Accepts 2V–6V input; requires 1µF ceramic decoupling close to pin for EMI filtering and transient response. |
| 2 GND | Ground Reference & Thermal Path | Primary return path and thermal conduction node; must connect to large PCB copper area or ground plane. |
| 3 SHDN | Active-Low Shutdown Control | Pull ≤0.4V to disable regulator; draws <0.01µA bias current; connect to IN for always-on operation. |
| 4 BP | Noise Bypass Terminal | Connects to 10nF capacitor between BP and OUT to reduce output voltage noise by >90% vs. non-bypassed mode. |
| 5 N.C. | No Internal Connection | Not bonded; must remain unconnected - no routing or soldering required. |
| 6 OUT | Regulated 2.7V Output | Delivers up to 150mA; bypassed with 1µF ceramic capacitor to GND for guaranteed stability under all load conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low output noise | 11µVRMS (100Hz–100kHz) achieved via dedicated BP pin and internal noise-bypass architecture - preserves signal integrity in sensitive analog/RF stages. |
| High PSRR at audio frequencies | 78dB at 1kHz - effectively isolates downstream circuits from ripple generated by buck converters operating at ~1MHz with 1kHz sidebands. |
| Stable with minimal capacitance | Guaranteed stability using only 1µF ceramic output capacitor - eliminates need for larger, higher-ESR tantalum or polymer caps in size-critical designs. |
| Low-quiescent-current shutdown | <1µA shutdown current - extends shelf life and runtime in battery-backed real-time clocks and memory retention circuits. |
| Integrated protection | Thermal shutdown (+160°C) with 10°C hysteresis and current limiting (min 150mA) - prevents damage during output short or overload without external circuitry. |
Applications
| Bluetooth Radio Power Supply | Digital Camera Image Sensor Bias |
|---|---|
|
Use Scenario: Powers the RF transceiver and baseband processor in compact Bluetooth headsets and wireless earbuds. IC Role / Device Role / Timing Role: Low-noise 2.7V LDO supplying VCC for BLE SoCs and crystal oscillator buffers. Use Value: 11µVRMS noise prevents phase jitter in the 2.4GHz LO chain, maintaining EDR packet error rate below 0.1%. |
Use Scenario: Provides clean bias voltage to CMOS image sensors and analog front-end amplifiers in 1080p action cameras. IC Role / Device Role / Timing Role: Primary 2.7V analog rail for sensor pixel array and column ADC reference. Use Value: 78dB PSRR at 1kHz rejects switching noise from the main 3.3V buck converter, reducing fixed-pattern noise by ≥12dB. |
| Portable Audio Codec Supply | Medical Wearable Sensor Front-End |
|
Use Scenario: Supplies headphone amplifier and DAC in battery-powered personal stereos and voice assistants. IC Role / Device Role / Timing Role: Ultra-low-noise 2.7V rail for audio signal path and PLL reference clock generation. Use Value: 120mV dropout allows full 2.7V output until battery drops to 2.82V, maximizing playback time from single-cell Li-ion. |
Use Scenario: Powers low-power ECG/PPG analog front-end ICs in FDA-cleared wearable patches and biosensors. IC Role / Device Role / Timing Role: Precision 2.7V supply for instrumentation amplifiers and 16-bit sigma-delta ADCs. Use Value: 40µA ground current extends 7-day continuous monitoring runtime on a 120mAh coin cell by >18% vs. standard LDOs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B272MR-G | 2.7V fixed, 150mA, 250mV dropout at 100mA, 45µVRMS noise, SOT-25 package (2.9mm × 2.8mm) | Larger footprint and higher noise limit use in RF-sensitive designs; suitable for cost-driven consumer audio where 78dB PSRR is not required. | Select when board area is less constrained and ultra-low noise is secondary to procurement simplicity and lower unit cost. |
| Analog Devices ADP160ACBZ-2.7-R7 | 2.7V fixed, 150mA, 190mV dropout at 150mA, 22µVRMS noise, 5-ball WLCSP (1.0mm × 1.0mm) | Smaller package but higher noise degrades RF performance; lacks BP pin, limiting noise optimization flexibility. | Choose for ultra-miniature wearables where 1.5mm × 1.0mm µDFN is still too large, accepting 2× higher noise for 30% smaller area. |
Compared with the Torex XC6219B272MR-G and ADP160ACBZ-2.7-R7, the MAX8840EYT27+T uniquely delivers 11µVRMS noise and 78dB PSRR in a 1.5mm × 1.0mm footprint - making it the only option that simultaneously meets stringent RF noise budgets and space constraints in next-gen Bluetooth and imaging modules.
Availability
MAX8840EYT27+T is available at Aetrix Electronics and suitable for Bluetooth radio power management, digital camera image sensor biasing, portable audio codec supply, and medical wearable sensor front-end applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX8840EYT27+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 markets.
The MAX8840 series belongs to Maxim's ultra-low-noise LDO product line, engineered specifically for noise-sensitive RF, audio, and precision analog subsystems in battery-powered portable electronics.
FAQ
What is the exact output voltage tolerance of the MAX8840EYT27+T over temperature and load?
The MAX8840EYT27+T guarantees ±3% output voltage accuracy across –40°C to +85°C and for load currents from 100µA to 80mA. At room temperature and 1mA load, typical deviation is ±1%. This tolerance ensures reliable operation of 2.7V-tolerant logic and analog circuits without external trimming.
Can the MAX8840EYT27+T operate stably with a 0.47µF output capacitor?
No - the MAX8840EYT27+T is specified and guaranteed stable only with ≥1µF ceramic output capacitance. Using 0.47µF risks oscillation or degraded transient response, especially under dynamic load changes. The datasheet explicitly states "1µF (typ) of output capacitance for stability with any load" and provides ESR stability boundaries based on 1µF minimum.
Is the BP pin on the MAX8840EYT27+T required for basic operation?
No - the BP pin is optional for noise reduction but not required for regulation. The MAX8840EYT27+T functions as a standard 2.7V LDO with IN, GND, SHDN, and OUT connected; however, omitting the 10nF BP-to-OUT capacitor increases output noise from 11µVRMS to 230µVRMS, compromising RF and audio performance.
What is the maximum allowable input voltage for the MAX8840EYT27+T?
The absolute maximum input voltage for the MAX8840EYT27+T is +7V, but the recommended operating range is 2V to 6V per the Electrical Characteristics table. Exceeding 6V may cause excessive power dissipation or violate safe operating area limits, particularly at high ambient temperatures or heavy loads.
Does the MAX8840EYT27+T support reverse-voltage protection?
No - the MAX8840EYT27+T does not integrate reverse-voltage protection. Applying reverse polarity to the IN pin (i.e., IN < GND) beyond –0.3V violates Absolute Maximum Ratings and may cause permanent damage. External protection diodes or MOSFET-based reverse-polarity circuits must be added if system-level reverse-voltage exposure is possible.
MAX8840EYT27+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-UFLGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.135V @ 120mA (Typ)
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- -
- PSRR:
- 78dB ~ 54dB (1kHz ~ 100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-UTLGA (1.5x1.0)
MAX8840EYT27+T FAQ
1.How can I place an order for MAX8840EYT27+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8840EYT27+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 MAX8840EYT27+T reliable?
The price and inventory of MAX8840EYT27+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8840EYT27+T is usually 5 days.
3.What payment methods are accepted for MAX8840EYT27+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8840EYT27+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8840EYT27+T?
MAX8840EYT27+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8840EYT27+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 MAX8840EYT27+T?
For technical support, including MAX8840EYT27+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8840EYT27+T requirements.
6.How does Aetrix verify that MAX8840EYT27+T is sourced from the original manufacturer or authorized distributors?
All MAX8840EYT27+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 MAX8840EYT27+T meets industry standards.
7.What is the process for return or replacement of MAX8840EYT27+T?
All MAX8840EYT27+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8840EYT27+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 MAX8840EYT27+T part is unused and in its original packaging.
Return procedure for MAX8840EYT27+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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