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Analog Devices Inc./Maxim Integrated MAX8559EBAGJ
- Part No.:
- MAX8559EBAGJ
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFBGA, CSPBGA
- Datasheet:
-
MAX8559EBAGJ.pdf
- Description:
- IC REG LINEAR DUAL LOW NOISE
- Quantity:
- Payment:
- Shipping:
Inventory:443
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Product details
Overview
MAX8559EBAGJ from Maxim Integrated is a dual, low-noise, low-dropout linear regulator delivering 300mA per channel with factory-preset outputs of 3.00V (OUTA) and 2.85V (OUTB), operating from 2.5V to 6.5V input. It features 32µVRMS output noise, 70dB PSRR at 10kHz, and 60mV dropout at 100mA load-designed for power-sensitive portable electronics requiring clean, independent voltage rails.
For engineers reviewing the MAX8559EBAGJ datasheet, MAX8559EBAGJ pinout, MAX8559EBAGJ application, or MAX8559EBAGJ equivalent, key selection criteria include dual independent shutdown control, UCSP package footprint (2mm × 1mm), low quiescent current (115µA per LDO), and compatibility with small ceramic capacitors without mandatory bypass.
Technical Context
The MAX8559EBAGJ integrates two independent P-channel MOSFET pass transistors (RDS(ON) ≈ 0.6Ω), enabling load-proportional dropout and eliminating base-drive current loss typical of PNP-based regulators. Each LDO employs a 1.25V bandgap reference and internal resistor divider for fixed-output regulation.
It supports independent logic-controlled shutdown (SHDNA/SHDNB), with internal 385Ω discharge paths on both outputs during shutdown and sub-1µA total supply current when both regulators are disabled. The BP pin accepts a 0.01µF capacitor to reduce output noise via an integrated RC filter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage (OUTA/OUTB) | 3.00V / 2.85V - factory-trimmed, no external feedback required |
| Max Output Current | 300mA per channel - supports 4.7µF ceramic output capacitors |
| Dropout Voltage | 60mV at 100mA - enables extended battery runtime near end-of-life |
| Output Noise | 32µVRMS (100Hz–100kHz) - achieved with 0.01µF BP capacitor |
| PSRR | 70dB at 10kHz - suppresses switching noise from upstream DC/DC converters |
| Quiescent Current | 115µA per LDO - constant across load and dropout, critical for standby efficiency |
| Input Voltage Range | 2.5V to 6.5V - compatible with single-cell Li-ion, Li-poly, and multi-cell alkaline systems |
Pinout & Package
MAX8559EBAGJ is available in an 8-bump UCSP package (2.06mm × 1.03mm, 0.5mm pitch) with exposed die attach pad. Pin mapping is identical for UCSP and TDFN variants per functional diagram and pin description table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA / INB | Input supply for LDO A / B | Shared input rail; must be bypassed with ≥2.2µF ceramic capacitor to GND |
| OUTA / OUTB | Regulated output for LDO A / B | Each sources up to 300mA; internally discharged to GND via 385Ω in shutdown |
| SHDNA / SHDNB | Active-low shutdown enable for LDO A / B | Logic-compatible (VIH = 1.6V, VIL = 0.4V); independent control enables dynamic rail sequencing |
| BP | Reference noise bypass | Connects to 0.01µF ceramic cap to reduce output noise; omission reduces solution size but increases noise to 254µVRMS |
| GND | Power ground | Common return for inputs, outputs, and internal circuitry; ties to exposed paddle in UCSP |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | Enables simultaneous regulation of two distinct voltage domains (e.g., core + I/O) with separate enable control |
| Low-noise operation | 32µVRMS noise with BP bypass supports noise-sensitive analog/RF circuits without additional filtering |
| P-channel pass transistor | Eliminates base-drive current loss, achieving 115µA quiescent current independent of load or dropout |
| No-bypass-capacitor operation | Functional without BP capacitor - simplifies layout and reduces BOM count where ultra-low noise is not required |
| Thermal & short-circuit protection | Auto-recovering thermal shutdown at +160°C with 10°C hysteresis; continuous short-circuit tolerance |
Applications
| Cellular Handsets | Digital Cameras |
|---|---|
Use Scenario: Powering RF transceiver and image sensor subsystems from a shared Li-ion battery. IC Role / Device Role / Timing Role: Dual LDO provides isolated 3.00V (RF front-end) and 2.85V (CMOS sensor interface) rails with independent shutdown for power gating. Use Value: 32µVRMS noise prevents corruption of sensitive receive signals; 60mV dropout extends talk time by >12 minutes at battery EOL. | Use Scenario: Supplying high-speed image processor and flash LED driver in compact camera modules. IC Role / Device Role / Timing Role: Delivers stable 3.00V to processor core and 2.85V to analog front-end while supporting rapid on/off cycling via SHDNA/SHDNB. Use Value: 70dB PSRR at 10kHz rejects noise from switching backlight drivers; 2mm² UCSP footprint saves PCB area in space-constrained modules. |
| Notebook Subsystems | Wireless LAN Cards |
Use Scenario: Regulating auxiliary voltages for embedded controller and touchpad interface in ultraportable notebooks. IC Role / Device Role / Timing Role: Provides always-on 3.00V rail (via SHDNA tied to INA) and user-controllable 2.85V rail (via SHDNB) for peripheral power management. Use Value: 115µA per LDO minimizes battery drain during sleep; independent shutdown enables precise wake-up sequencing. | Use Scenario: Powering WLAN baseband IC and RF transceiver in mini-PCIe or M.2 form factor cards. IC Role / Device Role / Timing Role: Supplies clean 3.00V (baseband) and 2.85V (RF synthesizer) with channel-to-channel isolation >60dB above 1MHz. Use Value: Low 0.6Ω RDS(ON) ensures <50mV dropout under burst transmit loads; UCSP package fits tight card-edge layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSM11752DUALTR | Fixed 3.3V/2.8V outputs; higher 150µA IQ; requires 1µF minimum output capacitance | Lacks BP noise-bypass option; lower PSRR (62dB @10kHz) | Choose for cost-sensitive designs where 3.3V/2.8V matches system needs and noise <50µVRMS is acceptable |
| TPS79930DDCR | Single 3.0V LDO only; 200mA rating; 25µVRMS noise; 1.5mm × 1.5mm DSBGA | No dual-output or independent shutdown; smaller package but requires two devices for same function | Use when only one rail is needed or when board space allows discrete dual placement with tighter noise spec |
Compared with TSM11752DUALTR and TPS79930DDCR, the MAX8559EBAGJ uniquely delivers factory-set 3.00V/2.85V outputs, 32µVRMS noise with BP bypass, and true independent shutdown in a 2mm² UCSP-making it optimal for compact, battery-powered systems demanding dual low-noise rails with minimal external components.
Availability
MAX8559EBAGJ is available at Aetrix Electronics and suitable for cellular handsets, digital cameras, notebook subsystems, and wireless LAN cards requiring stable component supply with guaranteed long-term availability.
Supply support for MAX8559EBAGJ 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 applications.
The MAX8559 product line targets portable battery-powered devices needing dual, low-noise, low-quiescent-current LDOs in ultra-small packages-emphasizing extended runtime, signal integrity, and design simplicity.
FAQ
What are the factory-set output voltages for MAX8559EBAGJ?
The MAX8559EBAGJ has fixed output voltages of 3.00V on OUTA and 2.85V on OUTB, laser-trimmed at wafer test and requiring no external feedback resistors. These values are confirmed in the Output Voltage Selector Guide (page 10 of the datasheet) and are immutable for this specific part number.
Does MAX8559EBAGJ require the BP capacitor for basic operation?
No, the MAX8559EBAGJ functions without the 0.01µF BP capacitor. Omitting it reduces solution size and cost but increases output noise from 32µVRMS to 254µVRMS. The BP pin is optional and used only when ultra-low noise is critical for analog or RF circuitry powered by MAX8559EBAGJ.
What package type is used for MAX8559EBAGJ, and what are its dimensions?
MAX8559EBAGJ uses the 8-bump UCSP package (package code B8-1), measuring 2.06mm × 1.03mm with 0.5mm pitch. It features a solderable exposed die attach pad and is lead-free compliant (RoHS). This footprint is documented in the Package Information section (page 11) and Pin Configurations diagram.
How does the shutdown behavior of MAX8559EBAGJ affect output discharge?
When SHDNA or SHDNB is driven low, the corresponding LDO output (OUTA or OUTB) is actively discharged to GND through an internal 385Ω resistor. This ensures rapid voltage decay (<1ms for 4.7µF load), preventing floating rails or unintended device wake-up-critical for reliable power sequencing in systems using MAX8559EBAGJ.
Can MAX8559EBAGJ operate from a 2.5V input while regulating 3.00V and 2.85V outputs?
No. MAX8559EBAGJ cannot regulate 3.00V or 2.85V outputs from a 2.5V input due to dropout constraints. Minimum input must exceed nominal output by at least the dropout voltage (60mV at 100mA). Thus, 3.00V regulation requires ≥3.06V input; 2.85V requires ≥2.91V. Operation below these thresholds results in unregulated output collapse.
MAX8559EBAGJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-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):
- 3V, 2.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.12V @ 100mA
- Current - Output:
- 300mA, 300mA
- Current - Quiescent (Iq):
- 290 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB ~ 54dB @ 10kHz ~ 100kHz
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UCSP (2.02x1.02)
MAX8559EBAGJ FAQ
1.How can I place an order for MAX8559EBAGJ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8559EBAGJ 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 MAX8559EBAGJ reliable?
The price and inventory of MAX8559EBAGJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8559EBAGJ is usually 5 days.
3.What payment methods are accepted for MAX8559EBAGJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8559EBAGJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8559EBAGJ?
MAX8559EBAGJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8559EBAGJ 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 MAX8559EBAGJ?
For technical support, including MAX8559EBAGJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8559EBAGJ requirements.
6.How does Aetrix verify that MAX8559EBAGJ is sourced from the original manufacturer or authorized distributors?
All MAX8559EBAGJ 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 MAX8559EBAGJ meets industry standards.
7.What is the process for return or replacement of MAX8559EBAGJ?
All MAX8559EBAGJ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8559EBAGJ, 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 MAX8559EBAGJ part is unused and in its original packaging.
Return procedure for MAX8559EBAGJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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