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Analog Devices Inc./Maxim Integrated MAX8531EBTJJ-T
- Part No.:
- MAX8531EBTJJ-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WFBGA, WLBGA
- Datasheet:
-
MAX8531EBTJJ-T.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
MAX8531EBTJJ-T 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, 40µVRMS output noise, and 130µA quiescent current - optimized for space-constrained, battery-powered portable electronics.
For engineers reviewing the MAX8531EBTJJ-T datasheet, MAX8531EBTJJ-T pinout, MAX8531EBTJJ-T application, or MAX8531EBTJJ-T equivalent, this page delivers verified technical context, package mapping, real-world use cases, and validated alternative options - all grounded in the official MAX8530/MAX8531 datasheet (Rev 1, 8/05) and Maxim's product documentation.
Technical Context
The MAX8531EBTJJ-T 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 top-mark "ACG" and Output Voltage Selector Guide.
Unlike the MAX8530, it omits the open-drain RESET output and instead includes the BP (bypass) pin connected to an internal resistor, forming a low-pass filter with an external 10nF capacitor to suppress reference noise - enabling 40µVRMS (10Hz–100kHz) output noise performance critical for RF and precision analog subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltages | 2.85V / 2.85V (fixed, confirmed by top-mark ACG and Output Voltage Selector Guide) |
| Max Output Currents | 200mA on OUT1, 150mA on OUT2 - guaranteed minimum per electrical characteristics table |
| Dropout Voltage | 100mV (typ) at 100mA load - enables operation down to VIN = VOUT + 0.1V, extending battery runtime |
| Output Noise | 40µVRMS (10Hz–100kHz) - achieved via BP pin + 10nF capacitor, critical for noise-sensitive analog/RF rails |
| Quiescent Current | 130µA (both LDOs active, independent of load/dropout - ensures ultra-low standby power) |
| Input Voltage Range | 2.5V to 6.5V - supports single-cell Li-ion, multi-cell alkaline, and USB-powered systems |
| Shutdown Current | <1µA - reduces system leakage during sleep modes without external discharge paths |
Pinout & Package
MAX8531EBTJJ-T is packaged in a 6-bump UCSP (Ultra-Compact Silicon Package) measuring 1.16mm × 1.57mm × 0.6mm (3×2 bump grid), with lead-free finish and bottom-side solder pads. The exposed die attach pad is not electrically connected - thermal dissipation relies on solder joint conduction to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| B3 | OUT2 | Regulator 2 output; supplies up to 150mA at fixed 2.85V; requires ≥1µF ceramic output capacitor |
| B2 | IN | Main input supply (2.5V–6.5V); accepts 2.2µF minimum input capacitance for stability and line transient suppression |
| B1 | OUT1 | Regulator 1 output; supplies up to 200mA at fixed 2.85V; requires ≥2.2µF ceramic output capacitor |
| A1 | GND | Power and signal ground reference; also serves as primary thermal path - must connect to large PCB copper area |
| A2 | SHDN | Active-high shutdown control; logic high enables both regulators; <1nA bias current minimizes control-line loading |
| A3 | BP | Reference bypass terminal; connects internally to 1.25V bandgap node - external 10nF capacitor reduces output noise to 40µVRMS |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed 2.85V outputs | Enables simultaneous powering of core logic and I/O rails in compact portable devices without external feedback resistors |
| 40µVRMS ultra-low noise | BP pin + 10nF capacitor suppresses reference noise - meets stringent requirements for RF transceivers and ADC/DAC supplies |
| 100mV dropout at 100mA | P-channel MOSFET pass device maintains regulation down to VIN = 2.95V for 2.85V output - maximizes usable battery capacity |
| 130µA quiescent current | Independent of load and dropout - ensures minimal battery drain in always-on subsystems like real-time clocks or sensor interfaces |
| Thermal & short-circuit protection | Shuts down at 160°C junction temperature with 10°C hysteresis; survives indefinite output short - enhances field reliability |
Applications
| Wireless Baseband Power | Digital Camera Core Supply |
|---|---|
|
Use Scenario: Powering RF transceiver ICs and baseband processors in Bluetooth/Wi-Fi modules where supply noise directly impacts EVM and sensitivity. IC Role / Device Role: Dual low-noise LDO providing clean 2.85V rails for analog front-end and digital core domains. Use Value: 40µVRMS noise and 62dB PSRR at 100Hz prevent switching noise coupling into sensitive RF paths. |
Use Scenario: Supplying image sensor interface and ISP (image signal processor) cores in compact digital cameras requiring stable, low-noise voltage under dynamic load. IC Role / Device Role: Primary dual-rail regulator delivering matched 2.85V outputs for sensor bias and digital logic. Use Value: 100mV dropout extends battery life during high-current CCD/CMOS readout; 130µA IQ preserves standby time. |
| Hand-Held Instrument Analog Rails | PCMCIA Card I/O Regulation |
|
Use Scenario: Generating precision analog supply rails for op-amps, ADCs, and DACs in portable multimeters and data loggers. IC Role / Device Role: Low-noise, high-accuracy voltage source replacing discrete regulators and ferrite-bead filters. Use Value: ±3% output accuracy over -40°C to +85°C and 40µVRMS noise ensure measurement integrity without post-regulation filtering. |
Use Scenario: Regulating 2.85V I/O voltage for PCMCIA/CardBus peripherals operating from variable host supply (3.3V–5V). IC Role / Device Role: Compact dual-LDO handling both card interface and controller logic rails in tight card-edge space. Use Value: 1.16mm × 1.57mm UCSP footprint fits within PCMCIA Type II envelope; 200mA/150mA drive supports burst-mode transfers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO low-noise applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8531ETTGG-T | Same dual 3.0V/3.0V outputs, identical BP-based noise reduction, but in 3mm × 3mm QFN-EP package (higher thermal mass, exposed pad for enhanced cooling) | Better suited for higher-power or thermally constrained designs where UCSP thermal limits (308mW) are exceeded | Select when >308mW power dissipation is expected or board assembly favors QFN reflow over UCSP placement. |
| TCS2102-285285DBR | Fixed 2.85V/2.85V dual LDO with 60µVRMS noise (vs. 40µVRMS), 150µA IQ, and 120mV dropout - slightly higher noise and dropout, no BP pin | Lacks dedicated noise-bypass architecture; requires tighter layout control to match MAX8531EBTJJ-T noise performance | Choose for cost-sensitive designs where 20µVRMS noise margin is acceptable and UCSP footprint is not required. |
Compared with MAX8531ETTGG-T, the MAX8531EBTJJ-T offers identical functionality in a 60% smaller footprint but lower thermal capability; versus TCS2102-285285DBR, it delivers superior noise and dropout at the cost of higher complexity due to the BP capacitor requirement.
Availability
MAX8531EBTJJ-T is available at Aetrix Electronics and suitable for cellular phones, digital cameras, handheld instruments, and PCMCIA cards requiring stable component supply with ultra-low-noise dual-rail regulation and minimal PCB area consumption.
Supply support for MAX8531EBTJJ-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 MAX8530/MAX8531 product line was designed specifically for ultra-compact, battery-powered portable electronics needing dual low-noise, low-quiescent-current LDOs in sub-2mm² packages - targeting space and power constraints in hand-held devices.
FAQ
What output voltages does the MAX8531EBTJJ-T provide?
The MAX8531EBTJJ-T provides two fixed output voltages: 2.85V on both OUT1 and OUT2. This is confirmed by its top-mark "ACG" and the Output Voltage Selector Guide in the MAX8530/MAX8531 datasheet. No external resistors are required - the outputs are factory-trimmed and fully specified across -40°C to +85°C.
Does the MAX8531EBTJJ-T include a reset output function?
No, the MAX8531EBTJJ-T does not include a reset output. That feature is exclusive to the MAX8530 family (e.g., MAX8530EBTJJ-T). The MAX8531EBTJJ-T replaces the RESET pin with the BP (bypass) pin to enable ultra-low-noise operation - a deliberate functional trade-off reflected in its pinout and ordering code.
What capacitor is required on the BP pin of the MAX8531EBTJJ-T?
The MAX8531EBTJJ-T requires a 10nF ceramic capacitor between the BP pin and GND to achieve its specified 40µVRMS output noise. This capacitor forms a low-pass filter with an internal resistor, suppressing bandgap reference noise. Using values significantly outside 10nF degrades noise performance - 0.01µF is explicitly called out in the datasheet's Typical Application Circuit and Electrical Characteristics table.
What is the thermal limit and protection behavior of the MAX8531EBTJJ-T?
The MAX8531EBTJJ-T activates thermal shutdown at +160°C junction temperature and remains off until the die cools by 10°C (hysteresis), then resumes regulation. This protects against sustained overload. Its UCSP package has a maximum continuous power dissipation of 308mW at +70°C ambient - exceeding this risks intermittent shutdown during high-load operation.
Can the MAX8531EBTJJ-T be used with input voltages below 2.5V?
No - the absolute minimum input voltage for the MAX8531EBTJJ-T is 2.5V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Operation below 2.5V may cause undervoltage lockout (UVLO) activation at ~2.25V threshold, resulting in unregulated or disabled outputs. For sub-2.5V inputs, alternative regulators such as the MAX1725 series must be considered.
MAX8531EBTJJ-T 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-T FAQ
1.How can I place an order for MAX8531EBTJJ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8531EBTJJ-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 MAX8531EBTJJ-T reliable?
The price and inventory of MAX8531EBTJJ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8531EBTJJ-T is usually 5 days.
3.What payment methods are accepted for MAX8531EBTJJ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8531EBTJJ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8531EBTJJ-T?
MAX8531EBTJJ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8531EBTJJ-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 MAX8531EBTJJ-T?
For technical support, including MAX8531EBTJJ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8531EBTJJ-T requirements.
6.How does Aetrix verify that MAX8531EBTJJ-T is sourced from the original manufacturer or authorized distributors?
All MAX8531EBTJJ-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 MAX8531EBTJJ-T meets industry standards.
7.What is the process for return or replacement of MAX8531EBTJJ-T?
All MAX8531EBTJJ-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8531EBTJJ-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 MAX8531EBTJJ-T part is unused and in its original packaging.
Return procedure for MAX8531EBTJJ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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