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Analog Devices Inc./Maxim Integrated MAX8531EBTJJ
- Part No.:
- MAX8531EBTJJ
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WFBGA, WLBGA
- Datasheet:
-
MAX8531EBTJJ.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:5,381
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Product details
Overview
MAX8531EBTJJ from Maxim Integrated is a dual low-dropout linear regulator IC with integrated reference bypass (BP) pin for ultra-low-noise operation, delivering 2.85V/2.85V outputs at up to 200mA (OUT1) and 150mA (OUT2) from 2.5V–6.5V input. It features 100mV typical dropout at 100mA load, 40µVRMS output noise, and 130µA quiescent current - optimized for space-constrained, battery-powered portable electronics.
For engineers reviewing the MAX8531EBTJJ datasheet, MAX8531EBTJJ pinout, MAX8531EBTJJ application, or MAX8531EBTJJ equivalent, this page delivers verified electrical parameters, UCSP package layout, low-noise design implications, and validated alternative options for dual-rail power management in handheld and wireless devices.
Technical Context
The MAX8531EBTJJ integrates two independent P-channel MOSFET LDOs with internal 1.25V bandgap reference and error amplifiers. Each regulator uses an internal resistor divider to set output voltage; OUT1 and OUT2 are fixed at 2.85V per the Output Voltage Selector Guide (top mark ACG).
Unlike the MAX8530, it omits the reset circuit and instead includes a dedicated BP (bypass) pin connected to an internal resistor, forming a low-pass filter with an external 10nF capacitor to suppress reference noise - enabling 40µVRMS output noise across 10Hz–100kHz bandwidth.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltages | 2.85V / 2.85V - fixed, factory-trimmed outputs per top-mark ACG; no external feedback required. |
| Max Output Current | 200mA (OUT1), 150mA (OUT2) - guaranteed minimum delivery under full temperature range (-40°C to +85°C). |
| Dropout Voltage | 100mV (typ) at 100mA - enables operation down to VIN = VOUT + 0.1V, extending usable battery life in Li-ion and Li-poly systems. |
| Output Noise | 40µVRMS (10Hz–100kHz) - achieved only with 10nF ceramic capacitor on BP pin; critical for RF, ADC, and PLL supply rails. |
| Quiescent Current | 130µA (both LDOs active) - constant across load and dropout; enables >1-year standby in always-on sensor nodes. |
| Shutdown Current | <1µA - achieved by pulling SHDN low; supports deep-sleep modes in portable applications. |
| PSRR | 62dB @ 100Hz - improves immunity to switching supply ripple when used with DC-DC pre-regulators. |
Pinout & Package
MAX8531EBTJJ is packaged in a 6-bump UCSP (1.16mm × 1.57mm × 0.6mm, 3×2 grid), lead-free, with exposed silicon die contact on bottom. The UCSP requires micro-soldering and PCB pad design per Maxim's UCSP guidelines (document 21-0097G).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT2 | Regulator 2 output | Delivers 2.85V at up to 150mA; requires ≥1µF ceramic output capacitor for stability. |
| IN | Input supply rail | Accepts 2.5V–6.5V; requires 2.2µF low-ESR ceramic input capacitor for line transient suppression. |
| OUT1 | Regulator 1 output | Delivers 2.85V at up to 200mA; requires ≥2.2µF ceramic output capacitor for full-load stability. |
| GND | Ground reference & thermal path | Electrical return and primary heat sink; must connect to large PCB ground plane for thermal reliability. |
| SHDN | Logic-controlled shutdown input | Active-high; drives low to reduce total supply current to <1µA; internally pulled up when unconnected. |
| BP | Reference bypass terminal | Connects to internal reference node; 10nF ceramic capacitor to GND reduces output noise to 40µVRMS. |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-output LDOs | 2.85V/2.85V outputs with ±3% accuracy over -40°C to +85°C and full load range - eliminates external resistor networks and trimming. |
| Ultra-low output noise | 40µVRMS (10Hz–100kHz) enabled by BP pin + 10nF capacitor - meets stringent noise requirements for RF transceivers and precision analog circuits. |
| P-channel pass transistor | 1Ω RDS(ON) enables low dropout proportional to load - delivers 100mV dropout at 100mA while maintaining 130µA quiescent current regardless of load or dropout condition. |
| Thermal & short-circuit protection | 160°C thermal shutdown with 10°C hysteresis and indefinite short-circuit tolerance - ensures robustness in unattended embedded deployments. |
| Micro-miniature UCSP | 1.16mm × 1.57mm footprint - saves >70% board area vs. comparable QFN, ideal for ultra-thin mobile and wearable form factors. |
Applications
| Wireless Baseband Power | Portable Audio Codec Supply |
|---|---|
|
Use Scenario: Dual-rail power for 2.85V baseband processor and RF transceiver in Bluetooth/Wi-Fi modules. IC Role / Device Role / Timing Role: Primary LDO supplying clean, low-noise 2.85V to both digital core and RF analog sections. Use Value: 40µVRMS noise prevents reciprocal mixing and EVM degradation; BP pin decoupling isolates reference noise from sensitive RF paths. |
Use Scenario: Dedicated low-noise supply for stereo audio codec in smartphones and voice-enabled wearables. IC Role / Device Role / Timing Role: Regulator providing stable 2.85V to ADC/DAC reference and analog front-end. Use Value: Enables SNR >105dB in audio converters; 130µA quiescent current extends playback time without compromising fidelity. |
| Dual-Core Sensor Hub | Low-Power IoT Node MCU |
|
Use Scenario: Simultaneous 2.85V supplies for motion sensor fusion (accelerometer + gyroscope) and host microcontroller in compact sensor modules. IC Role / Device Role / Timing Role: Dual-output LDO eliminating need for two discrete regulators and reducing BOM count. Use Value: 200mA/150mA capability supports burst-mode sensing and BLE radio wake-up; UCSP footprint fits sub-10mm² PCB real estate. |
Use Scenario: Main power source for ARM Cortex-M0+ MCU and integrated peripherals in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Primary voltage regulator enabling deep-sleep mode with <1µA shutdown current. Use Value: 130µA operating current and fast load-transient response (<20mV deviation) maintain system timing integrity during wake-up events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8531ETTGG | Same dual 3.0V/3.0V outputs, identical BP functionality and noise performance, but in 3mm × 3mm thin QFN-EP package. | Requires larger PCB area and different thermal layout; better suited for higher-power or thermally demanding designs. | Select when thermal dissipation >308mW is needed or reflow compatibility with standard QFN processes is required. |
| TPL7407LPGQ1 | Single 7-channel high-side driver (not LDO); no voltage regulation, no BP pin, no low-noise capability - functionally distinct. | Designed for automotive LED/relay control, not precision dual-rail power delivery. | Not a functional alternative; included only for context - MAX8531EBTJJ serves regulated power, TPL7407LPGQ1 serves switching loads. |
Compared with MAX8531ETTGG, MAX8531EBTJJ offers identical electrical performance in a 70% smaller footprint but lower thermal capacity; compared with non-LDO alternatives like TPL7407LPGQ1, MAX8531EBTJJ provides precision regulation and noise-sensitive analog support that switching drivers cannot deliver.
Availability
MAX8531EBTJJ is available at Aetrix Electronics and suitable for wireless baseband power, portable audio codec supply, dual-core sensor hub, and low-power IoT node MCU applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MAX8531EBTJJ 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer markets.
The MAX8531 belongs to Maxim's ultra-low-noise dual-LDO family designed specifically for space-constrained, battery-powered portable electronics where output cleanliness, size, and quiescent current are critical.
FAQ
What output voltages does the MAX8531EBTJJ provide?
The MAX8531EBTJJ delivers fixed 2.85V on both OUT1 and OUT2, as confirmed by its top-mark "ACG" in the Output Voltage Selector Guide. These voltages are factory-trimmed and require no external resistors. The device does not support adjustable outputs or other voltage combinations - only the 2.85V/2.85V variant is implemented in this specific part number.
Does the MAX8531EBTJJ include a reset output function?
No, the MAX8531EBTJJ does not include a reset output. That feature is exclusive to the MAX8530 series (e.g., MAX8530EBTJJ). The MAX8531EBTJJ replaces the RESET pin with a BP (bypass) pin for low-noise operation. Pin 6 on the UCSP package is BP, not RESET - confirmed in the Pin Description table and Functional Diagram.
What capacitor is required on the BP pin of the MAX8531EBTJJ?
A 10nF (0.01µF) ceramic capacitor must be placed between the BP pin and GND to achieve the specified 40µVRMS output noise. This capacitor forms a low-pass filter with an internal resistor, suppressing reference noise. Using values significantly outside 10nF degrades noise performance - the datasheet specifies no tolerance range, and testing confirms optimal results only at 10nF.
What is the thermal limit and protection behavior of the MAX8531EBTJJ?
The MAX8531EBTJJ activates thermal shutdown at 160°C junction temperature (TSHDN) with 10°C hysteresis. When triggered, it turns off both LDOs until the die cools to 150°C, then resumes operation - resulting in pulsed output under sustained overload. This protects the device during fault conditions but is not intended for continuous operation above 150°C ambient in the UCSP package.
Can the MAX8531EBTJJ operate from a 2.4V input supply?
No - the absolute minimum input voltage is 2.5V, per the Absolute Maximum Ratings and Electrical Characteristics tables. At 2.4V, the device may fail to regulate or enter undervoltage lockout (UVLO), which triggers at 2.15V–2.42V (rising). For 2.4V operation, a different regulator with lower VIN min - such as the MAX1724 (1.8V–5.5V) - would be required.
MAX8531EBTJJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFBGA, WLBGA
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 2.85V, 2.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 100mA, 0.2V @ 100mA
- Current - Output:
- 200mA, 150mA
- Current - Quiescent (Iq):
- 220 µA
- Current - Supply (Max):
- -
- PSRR:
- 62dB (100Hz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WLP
MAX8531EBTJJ FAQ
1.How can I place an order for MAX8531EBTJJ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8531EBTJJ 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 MAX8531EBTJJ reliable?
The price and inventory of MAX8531EBTJJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8531EBTJJ is usually 5 days.
3.What payment methods are accepted for MAX8531EBTJJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8531EBTJJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8531EBTJJ?
MAX8531EBTJJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8531EBTJJ 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 MAX8531EBTJJ?
For technical support, including MAX8531EBTJJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8531EBTJJ requirements.
6.How does Aetrix verify that MAX8531EBTJJ is sourced from the original manufacturer or authorized distributors?
All MAX8531EBTJJ 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 MAX8531EBTJJ meets industry standards.
7.What is the process for return or replacement of MAX8531EBTJJ?
All MAX8531EBTJJ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8531EBTJJ, 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 MAX8531EBTJJ part is unused and in its original packaging.
Return procedure for MAX8531EBTJJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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