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Analog Devices Inc./Maxim Integrated MAX8531EBTA8
- Part No.:
- MAX8531EBTA8
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 6-WFBGA, CSPBGA
- Datasheet:
-
MAX8531EBTA8.pdf
- Description:
- IC REG LINEAR LDO
- Quantity:
- Payment:
- Shipping:
Inventory:1,589
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Product details
Overview
MAX8531EBTA8 from Maxim Integrated is a dual low-dropout linear regulator IC with integrated low-noise reference bypass (BP) pin, designed for space-constrained battery-powered systems. It delivers 200mA from OUT1 and 150mA from OUT2 across 1.5V–3.3V output ranges, features 100mV typical dropout at 100mA, 40µVRMS output noise, and operates from 2.5V–6.5V input. Used in digital cameras and handheld instruments requiring clean, compact dual-rail power.
For engineers reviewing the MAX8531EBTA8 datasheet, MAX8531EBTA8 pinout, MAX8531EBTA8 application, or MAX8531EBTA8 equivalent, this page provides verified specifications, UCSP package details, noise-sensitive dual-LDO design context, and validated alternative options for portable electronics power management.
Technical Context
The MAX8531EBTA8 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, supporting fixed outputs between 1.5V and 3.3V in 50mV steps. The BP pin enables external 0.01µF capacitor filtering to achieve ultra-low 40µVRMS noise across both outputs.
It employs thermal shutdown at +160°C with 10°C hysteresis and independent current limiting (210mA min for OUT1, 165mA min for OUT2). Shutdown reduces supply current to <1µA, while quiescent current remains stable at 130µA (typ) across load and dropout conditions due to P-MOS pass transistor architecture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 6.5V - supports single-cell Li-ion, Li-polymer, and multi-cell alkaline/NiMH inputs without external pre-regulation. |
| OUT1 Output Current | 200mA guaranteed - sufficient for core logic or baseband processor rails in compact portable devices. |
| OUT2 Output Current | 150mA guaranteed - suitable for I/O, memory, or sensor subsystems sharing same compact footprint. |
| Dropout Voltage | 100mV (typ) at 100mA - extends usable battery life by enabling regulation down to VOUT + 0.1V. |
| Output Noise | 40µVRMS (10Hz–100kHz) - achieved via BP pin + 0.01µF capacitor; critical for ADCs, RF receivers, and precision analog circuits. |
| Quiescent Current | 130µA (both LDOs active) - enables >1-year shelf life in always-on IoT sensors or backup power domains. |
| Shutdown Current | <1µA - ensures negligible drain during system sleep modes, preserving battery charge. |
Pinout & Package
MAX8531EBTA8 is packaged in a 6-bump Ultra-Compact Silicon Package (UCSP), measuring 1.16mm × 1.57mm × 0.6mm with 3×2 bump grid. This leadless, chip-scale package enables direct die attachment on PCBs for minimal footprint and optimal thermal performance in ultra-thin devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT2 | Regulator 2 output terminal | Delivers up to 150mA; requires ≥1µF ceramic output capacitor for stability. |
| IN | Main input supply connection | Accepts 2.5V–6.5V; requires 2.2µF low-ESR ceramic input capacitor for transient immunity. |
| OUT1 | Regulator 1 output terminal | Delivers up to 200mA; requires ≥2.2µF ceramic output capacitor (≥1µF if load <150mA). |
| GND | Ground reference and thermal path | Serves as primary heat sink; must connect to large copper area or 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 0.01µF ceramic capacitor to filter reference noise and achieve 40µVRMS output noise. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise BP pin architecture | Enables 40µVRMS output noise with only 0.01µF external capacitor-eliminates need for post-LDO ferrite beads or additional regulators. |
| P-channel MOSFET pass transistors | Deliver load-proportional dropout and eliminate base-drive current loss-ensures stable 130µA quiescent current across all operating conditions. |
| Independent current limiting | Guarantees 210mA (OUT1) and 165mA (OUT2) minimum current limit-protects against short-circuit faults without external components. |
| Thermal shutdown with hysteresis | Triggers at +160°C junction temperature and re-enables only after 10°C cooldown-prevents thermal runaway during sustained overload. |
| UCSP package footprint | 1.16mm × 1.57mm area-fits within tight spacing constraints of camera modules, Bluetooth earbuds, and wearable sensors. |
Applications
| Digital Camera Power Management | Hand-Held Instrument Core Rail |
|---|---|
|
Use Scenario: Dual-rail power for CMOS image sensor (1.8V) and ISP processor (2.8V) in sub-20mm-thick camera modules. IC Role / Device Role / Timing Role: Dual LDO providing isolated, low-noise, sequenced power rails with no external sequencing circuitry required. Use Value: 40µVRMS noise prevents image sensor pattern noise; UCSP footprint enables direct placement beneath sensor die. |
Use Scenario: Compact multimeter or oscilloscope probe requiring stable analog front-end (2.5V) and microcontroller core (3.3V) supplies. IC Role / Device Role / Timing Role: Dual-output regulator delivering precision rails with high PSRR (62dB) to reject switching noise from display drivers. Use Value: Independent current limits prevent fault propagation; BP pin ensures clean ADC reference voltage without added filtering. |
| Wireless LAN Card Baseband | PCMCIA Card I/O Interface |
|
Use Scenario: Low-profile 802.11b/g radio card needing 1.5V RF synthesizer and 3.3V MAC controller power in 3.3mm height envelope. IC Role / Device Role / Timing Role: Dual LDO supplying tightly regulated, low-dropout rails with fast load-transient response (<20mV deviation). Use Value: 100mV dropout at 100mA extends operational time on marginal battery voltage; UCSP minimizes board area. |
Use Scenario: Legacy PCMCIA expansion card (e.g., GPS receiver) requiring 3.3V host interface and 1.8V GPS baseband supply. IC Role / Device Role / Timing Role: Dual LDO replacing discrete regulators and voltage dividers to meet JEDEC MO-229 WEEA package height limits. Use Value: Single 6-bump UCSP replaces two SOT-23 regulators-reduces component count, layout complexity, and BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO low-noise power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8531EBTJJ | Same UCSP package, identical electrical specs, but top-mark "ACG" indicates 2.85V/2.85V output configuration vs. MAX8531EBTA8's unspecified but confirmed 1.5V–3.3V programmable range per Output Voltage Selector Guide. | Fixed dual 2.85V outputs-suitable only where matched rails are required; not configurable for asymmetric voltages like 1.8V/2.8V. | Select MAX8531EBTA8 when flexible output combinations (e.g., 1.8V/2.8V) are needed; choose MAX8531EBTJJ only for matched dual 2.85V rails. |
| TLC7701QPWRQ1 | Single-output automotive-grade LDO (1A), no BP pin, higher 250µA quiescent current, 200mV dropout at 500mA-lacks dual-rail capability and low-noise optimization. | Designed for automotive infotainment power domains-not suitable for portable, noise-sensitive, or space-constrained applications. | Not a functional substitute: MAX8531EBTA8 provides dual outputs, 40µVRMS noise, and UCSP size-no single alternative matches this combination. |
Compared with MAX8531EBTJJ and TLC7701QPWRQ1, the MAX8531EBTA8 uniquely delivers dual independently rated outputs, ultra-low noise via BP pin, and industry-smallest UCSP footprint-making it irreplaceable for miniaturized, battery-powered instrumentation and imaging systems.
Availability
MAX8531EBTA8 is available at Aetrix Electronics and suitable for digital cameras, hand-held instruments, wireless LAN cards, and PCMCIA interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MAX8531EBTA8 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 engineered for ultra-compact, low-power portable electronics-delivering dual LDO regulation with either reset monitoring (MAX8530) or ultra-low-noise operation (MAX8531) in sub-2mm² packages.
FAQ
What output voltage options are supported by MAX8531EBTA8?
The MAX8531EBTA8 supports factory-programmed fixed outputs between 1.5V and 3.3V in 50mV increments, including common combinations like 1.8V/2.8V and 2.5V/3.3V. Its UCSP top-mark "A8" corresponds to a specific output pair defined in Maxim's Output Voltage Selector Guide-confirmed as 1.5V on OUT1 and 2.85V on OUT2 per ordering documentation and package variant mapping.
Does MAX8531EBTA8 include a reset function like the MAX8530?
No, MAX8531EBTA8 does not include a reset function. It is the low-noise variant of the family and substitutes the RESET pin (found on MAX8530) with the BP (bypass) pin for noise reduction. The MAX8531EBTA8 pinout has BP at position A3, whereas MAX8530 variants place RESET there-this functional distinction is hardwired and non-configurable.
What capacitor values are required for stable operation of MAX8531EBTA8?
For stable operation, MAX8531EBTA8 requires a 2.2µF ceramic input capacitor (CIN), ≥2.2µF ceramic output capacitor on OUT1 (≥1µF if load <150mA), ≥1µF on OUT2, and a mandatory 0.01µF ceramic capacitor on the BP pin. X7R or X5R dielectrics are recommended; Z5U/Y5V types require ≥4.7µF to ensure stability below –10°C.
How does the BP pin on MAX8531EBTA8 reduce output noise?
The BP pin on MAX8531EBTA8 connects to an internal resistor forming a low-pass filter with the external 0.01µF capacitor. This filters noise from the internal 1.25V bandgap reference, directly reducing error amplifier input noise-and thereby achieving 40µVRMS output noise (10Hz–100kHz) across both OUT1 and OUT2 without additional external filtering components.
Is MAX8531EBTA8 pin-compatible with other MAX853x variants in UCSP?
Yes, MAX8531EBTA8 shares identical 6-bump UCSP pinout (B3/B2/B1/A1/A2/A3) and mechanical footprint with all MAX8530/MAX8531 UCSP variants-including MAX8530EBTJ2 and MAX8531EBTJJ. However, pin functionality differs: MAX8531EBTA8 uses A3 for BP, while MAX8530 variants use A3 for RESET-requiring schematic and layout review before substitution.
MAX8531EBTA8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFBGA, CSPBGA
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 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-UCSP (1.57x1.05)
MAX8531EBTA8 FAQ
1.How can I place an order for MAX8531EBTA8 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8531EBTA8 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 MAX8531EBTA8 reliable?
The price and inventory of MAX8531EBTA8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8531EBTA8 is usually 5 days.
3.What payment methods are accepted for MAX8531EBTA8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8531EBTA8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8531EBTA8?
MAX8531EBTA8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8531EBTA8 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 MAX8531EBTA8?
For technical support, including MAX8531EBTA8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8531EBTA8 requirements.
6.How does Aetrix verify that MAX8531EBTA8 is sourced from the original manufacturer or authorized distributors?
All MAX8531EBTA8 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 MAX8531EBTA8 meets industry standards.
7.What is the process for return or replacement of MAX8531EBTA8?
All MAX8531EBTA8 units undergo pre-shipment inspection (PSI). If there is an issue with MAX8531EBTA8, 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 MAX8531EBTA8 part is unused and in its original packaging.
Return procedure for MAX8531EBTA8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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