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Analog Devices Inc./Maxim Integrated MAX8559EBA22+
- Part No.:
- MAX8559EBA22+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFBGA, CSPBGA
- Datasheet:
-
MAX8559EBA22+.pdf
- Description:
- IC REG LINEAR DUAL LOW NOISE
- Quantity:
- Payment:
- Shipping:
Inventory:1,498
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Product details
Overview
MAX8559EBA22+ from Maxim Integrated is a dual, low-noise, low-dropout linear regulator delivering 300mA per channel with factory-preset 1.8V outputs, 32µVRMS output noise, 70dB PSRR at 10kHz, and 60mV dropout at 100mA load-designed for power-sensitive portable electronics such as digital cameras and wireless LAN cards.
For engineers reviewing the MAX8559EBA22+ datasheet, MAX8559EBA22+ pinout, MAX8559EBA22+ application, or MAX8559EBA22+ equivalent, key selection criteria include independent shutdown control, UCSP package footprint (2mm × 1mm), no-bypass-capacitor operation capability, and thermal/short-circuit protection for compact battery-powered systems.
Technical Context
The MAX8559EBA22+ integrates two independent P-channel MOSFET pass transistors (RDS(ON) ≈ 0.6Ω) with internal 1.25V bandgap reference and error amplifiers, enabling precise feedback regulation without external resistors. Each LDO features dedicated SHDN input, autodischarge circuitry (385Ω discharge path), and BP pin for optional 0.01µF noise-filtering capacitor.
Its architecture supports simultaneous or staggered shutdown, maintains 115µA quiescent current per LDO under no load, and delivers stable regulation across –40°C to +85°C with ±3% output voltage accuracy over full load and temperature range-critical for multi-rail portable SoC power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.8V per channel (factory-preset, nonadjustable) |
| Max Output Current | 300mA per LDO-supports high-current digital core and I/O rails in handheld instruments |
| Dropout Voltage | 60mV at 100mA-enables >98% efficiency at light loads and extends usable battery life in 2.5–6.5V input systems |
| Output Noise | 32µVRMS (100Hz–100kHz)-meets low-noise analog supply requirements for camera image sensors and RF front-ends |
| PSRR | 70dB at 10kHz-rejects switching noise from adjacent DC-DC converters in mixed-signal PCB layouts |
| Quiescent Current | 115µA per LDO (no load)-minimizes standby power loss in always-on subsystems like Bluetooth radios |
| Shutdown Current | 0.01µA (both LDOs off)-enables ultra-low-power deep-sleep modes in cellular handsets |
Pinout & Package
MAX8559EBA22+ is packaged in an 8-bump UCSP (2.06mm × 1.03mm, 0.5mm pitch) with exposed die attach pad. This lead-free, space-constrained package enables <2mm² board area usage and requires solder reflow per Maxim APP_1891 profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA / INB | Shared Input Supply | Common 2.5–6.5V input rail for both LDOs; bypass with ≥2.2µF ceramic capacitor to GND |
| OUTA / OUTB | Regulated Outputs | 1.8V outputs each capable of sourcing 300mA; internally discharged via 385Ω to GND during shutdown |
| SHDNA / SHDNB | Independent Shutdown Inputs | Logic-low active; enable selective power gating of individual rails without affecting other LDO or reference |
| BP | Noise Bypass Terminal | Accepts 0.01µF ceramic capacitor to reduce output noise by filtering reference node-optional for size-constrained designs |
| GND | Ground Reference | Common return for all circuits; must be connected to low-impedance ground plane for thermal and noise performance |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | Enables separate power domains for processor core and peripheral I/O-eliminates need for two discrete regulators |
| No-bypass-capacitor operation | Reduces bill-of-materials count and PCB area by removing mandatory BP capacitor when noise specs allow |
| Thermal & short-circuit protection | Self-limiting behavior prevents damage during sustained overload-no external current-sense resistor required |
| Low 2.06mm × 1.03mm UCSP footprint | Supports ultra-thin mobile form factors where TDFN (3mm × 3mm) is too large for layout constraints |
| Factory-preset 1.8V outputs | Eliminates external feedback resistors and associated layout sensitivity-ensures production consistency and test repeatability |
Applications
| Digital Camera Power Management | Wireless LAN Card Regulation |
|---|---|
|
Use Scenario: Powers CMOS image sensor and ISP core in compact digital cameras with tight thermal and noise budgets. IC Role / Device Role / Timing Role: Dual LDO supplies clean 1.8V rails-one for sensor analog front-end, one for digital processing block-with independent shutdown for power sequencing. Use Value: 32µVRMS noise ensures minimal fixed-pattern noise in captured images; 60mV dropout extends battery runtime during flash-intensive capture sequences. |
Use Scenario: Provides regulated 1.8V power to WLAN baseband IC and RF transceiver in mini-PCIe or M.2 wireless modules. IC Role / Device Role / Timing Role: Delivers low-noise, fast-transient response power with independent shutdown to support Wi-Fi sleep/wake cycles. Use Value: 70dB PSRR suppresses noise coupling from nearby switching regulators; 115µA quiescent current minimizes standby drain during DTIM intervals. |
| Handheld Instrument Core Supply | Cellular Phone Application Processor Rail |
|
Use Scenario: Supplies precision analog and digital subsystems in portable multimeters and oscilloscopes requiring stable, low-noise bias. IC Role / Device Role / Timing Role: Dual LDO generates isolated 1.8V rails for ADC reference and microcontroller core-prevents digital switching noise from corrupting analog measurements. Use Value: Channel-to-channel isolation >60dB (at 10kHz) ensures measurement integrity; thermal shutdown protects against probe-overload conditions. |
Use Scenario: Powers application processor I/O and memory interface in GSM/UMTS handsets operating from single-cell Li-ion battery. IC Role / Device Role / Timing Role: Regulates 1.8V I/O rail with fast load transient response and programmable shutdown synchronized to AP power states. Use Value: 15mV typical overshoot on 10µA→100mA load step maintains signal integrity across high-speed bus interfaces; UCSP package fits narrow board edges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS70245PWPR | 2.5V/3.3V dual outputs (not 1.8V/1.8V); 250mA per channel; 175µA IQ; requires external feedback resistors | Requires redesign of feedback network and may not meet noise/PSRR specs for camera sensor rails | Select only if dual-voltage rail generation is needed and 1.8V preset is not mandatory |
| ADP1740ACPZ-1.8-R7 | Single 1.8V LDO; 300mA; 200µA IQ; 120mV dropout at 100mA; 45µVRMS noise; 55dB PSRR at 10kHz | Requires two devices to match MAX8559EBA22+ integration level-increases board area and component count | Choose only when higher thermal dissipation (TDFN-compatible) or tighter output tolerance (±1%) is prioritized over size and noise |
Compared with TPS70245PWPR and ADP1740ACPZ-1.8-R7, MAX8559EBA22+ uniquely combines factory-preset 1.8V/1.8V outputs, sub-35µVRMS noise, and UCSP packaging-making it optimal for space-constrained, noise-sensitive dual-rail applications where minimizing BOM count and layout complexity is critical.
Availability
MAX8559EBA22+ is available at Aetrix Electronics and suitable for digital cameras, wireless LAN cards, handheld instruments, and cellular phone power management requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX8559EBA22+ 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 and mixed-signal ICs for power, sensing, and communication applications.
The MAX8559 series was designed specifically for battery-powered portable electronics needing dual, low-noise, low-quiescent-current LDOs in ultra-small packages-targeting digital imaging, wireless connectivity, and handheld instrumentation markets.
FAQ
What output voltage does the MAX8559EBA22+ provide?
The MAX8559EBA22+ provides two independent, factory-preset 1.8V outputs (VOUTA = VOUTB = 1.8V). This voltage is laser-trimmed during production and cannot be adjusted externally. The "22" in the part number corresponds to the 1.8V/1.8V output configuration per Maxim's Output Voltage Selector Guide.
Does the MAX8559EBA22+ require an external bypass capacitor on the BP pin?
No-the BP pin on the MAX8559EBA22+ accepts an optional 0.01µF ceramic capacitor to reduce output noise to 32µVRMS. If noise performance is less critical, the BP capacitor can be omitted entirely, reducing total solution size and cost without compromising regulation stability.
What is the maximum continuous output current per channel for the MAX8559EBA22+?
The MAX8559EBA22+ delivers up to 300mA of continuous output current per channel (OUTA and OUTB). This rating assumes use of a 4.7µF output capacitor and proper thermal management-especially important in the UCSP package, which has a 379mW power dissipation limit at +70°C ambient.
How does the shutdown functionality work on the MAX8559EBA22+?
The MAX8559EBA22+ features two independent logic-controlled shutdown inputs: SHDNA controls OUTA, and SHDNB controls OUTB. Driving either pin low disables its respective LDO while keeping the other active. Driving both low shuts down the entire device, reducing total supply current to just 0.01µA-ideal for deep-sleep modes in portable systems.
Is the MAX8559EBA22+ compatible with ceramic output capacitors?
Yes-the MAX8559EBA22+ is optimized for ceramic output capacitors. For stable operation at 300mA load, a minimum 4.7µF X7R/X5R ceramic capacitor is recommended per output. Z5U/Y5V dielectrics may require larger values (≥4.7µF) below –10°C to maintain phase margin across temperature.
MAX8559EBA22+ 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):
- 1.8V, 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -, -
- Current - Output:
- 300mA, 300mA
- Current - Quiescent (Iq):
- 290 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB ~ 54dB (10kHz ~ 100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UCSP (2.02x1.02)
MAX8559EBA22+ FAQ
1.How can I place an order for MAX8559EBA22+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8559EBA22+ 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 MAX8559EBA22+ reliable?
The price and inventory of MAX8559EBA22+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8559EBA22+ is usually 5 days.
3.What payment methods are accepted for MAX8559EBA22+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8559EBA22+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8559EBA22+?
MAX8559EBA22+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8559EBA22+ 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 MAX8559EBA22+?
For technical support, including MAX8559EBA22+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8559EBA22+ requirements.
6.How does Aetrix verify that MAX8559EBA22+ is sourced from the original manufacturer or authorized distributors?
All MAX8559EBA22+ 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 MAX8559EBA22+ meets industry standards.
7.What is the process for return or replacement of MAX8559EBA22+?
All MAX8559EBA22+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8559EBA22+, 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 MAX8559EBA22+ part is unused and in its original packaging.
Return procedure for MAX8559EBA22+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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