My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8559ETA8A-T
- Part No.:
- MAX8559ETA8A-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX8559ETA8A-T.pdf
- Description:
- IC REG LINEAR DUAL LOW NOISE
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX8559ETA8A-T from Maxim Integrated is a dual, low-noise, low-dropout linear regulator delivering 300mA per channel with 32µVRMS output noise, 70dB PSRR at 10kHz, and 60mV dropout at 100mA load. It features independent logic-controlled shutdown inputs (SHDNA/SHDNB), operates from 2.5V–6.5V input, and provides factory-preset 1.5V (OUTA) and 3.3V (OUTB) outputs for power rail separation in portable electronics.
For engineers reviewing the MAX8559ETA8A-T datasheet, MAX8559ETA8A-T pinout, MAX8559ETA8A-T application, or MAX8559ETA8A-T equivalent, key selection criteria include dual-rail LDO performance under battery-constrained conditions, thermal shutdown behavior at +160°C, UCSP/TDFN package compatibility, and bypass capacitor requirements for noise-sensitive analog subsystems.
Technical Context
The MAX8559ETA8A-T integrates two independent P-channel MOSFET pass transistors (RDS(ON) ≈ 0.6Ω each) enabling load-proportional dropout voltage and ultra-low quiescent current (115µA per LDO). Its internal 1.25V bandgap reference feeds error amplifiers that regulate output via fixed internal feedback dividers-no external resistors required.
Each LDO includes autonomous current limiting (310mA min), thermal shutdown with 10°C hysteresis, and internal 385Ω discharge paths for OUTA/OUTB during shutdown. The BP pin accepts a 0.01µF ceramic capacitor to form a low-pass filter that reduces broadband output noise to ≤32µVRMS (100Hz–100kHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.5V (OUTA) and 3.3V (OUTB), factory-preset-enables dual-rail power without external feedback components. |
| Max Output Current | 300mA per channel-supports high-current digital cores and RF sections simultaneously. |
| Dropout Voltage | 60mV at 100mA load-extends usable battery life by allowing operation down to VIN = VOUT + 60mV. |
| Output Noise | 32µVRMS (100Hz–100kHz, CBP = 0.01µF)-meets stringent noise requirements for ADC references and RF synthesizers. |
| PSRR | 70dB at 10kHz-rejects switching noise from adjacent DC-DC converters in mixed-signal systems. |
| Quiescent Current | 115µA per LDO at no load-minimizes standby power in always-on subsystems like real-time clocks. |
| Shutdown Current | 0.01µA (both SHDN pins low)-enables deep sleep modes in battery-powered IoT endpoints. |
Pinout & Package
MAX8559ETA8A-T uses an 8-pin TDFN-EP (3mm × 3mm, 0.8mm height) with exposed paddle for thermal dissipation. The package is RoHS-compliant and rated for -40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA / INB | Input supply for LDO A / B | Shared 2.5V–6.5V input rails-must be bypassed with ≥2.2µF ceramic capacitors to GND for stability. |
| OUTA / OUTB | Regulated outputs (1.5V / 3.3V) | Capable of sourcing 300mA continuous; internally discharged to GND via 385Ω resistor when corresponding SHDN is low. |
| SHDNA / SHDNB | Active-low shutdown controls | Independent logic-level inputs-drive low to disable respective LDO; both low disables internal reference and reduces IQ to 0.01µA. |
| BP | Reference noise bypass | Connects to 0.01µF ceramic capacitor to reduce output noise spectral density across both channels. |
| GND | Power ground | Common return path; must be connected to PCB ground plane and tied to exposed paddle for thermal management. |
| Exposed Paddle | Thermal pad / GND | Soldered to PCB ground plane-provides primary heat conduction path and improves power dissipation capability to 1.95W. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | Enables separate power domains for core logic (1.5V) and I/O/peripherals (3.3V) without cross-talk or shared regulation errors. |
| No-bypass-capacitor operation | Stable with only output capacitors-reduces BOM count and board area versus regulators requiring input bypass caps. |
| Factory-trimmed output accuracy | ±3% over -40°C to +85°C-eliminates need for post-manufacture calibration in cost-sensitive consumer devices. |
| Channel-to-channel isolation | ≥60dB at 10kHz-prevents noise coupling between regulated rails, critical for mixed-signal SoC power delivery. |
| Thermal overload protection | Auto-recovery shutdown at +160°C junction temperature-protects against sustained overloads without latch-up. |
Applications
| Cellular Phone Baseband Power | Digital Camera Image Sensor Bias |
|---|---|
Use Scenario: Supplying 1.5V core voltage to baseband processor and 3.3V I/O voltage to RF transceiver in GSM/UMTS handsets. IC Role / Device Role / Timing Role: Dual-rail LDO providing isolated, low-noise, and tightly regulated supplies to prevent digital switching noise from corrupting RF receive sensitivity. Use Value: 70dB PSRR at 10kHz suppresses DC-DC ripple from PMU, while 32µVRMS noise ensures clean clock generation for ADCs and DACs in audio subsystems. | Use Scenario: Powering CMOS image sensor analog front-end (1.5V) and digital interface (3.3V) in compact digital cameras. IC Role / Device Role / Timing Role: Low-noise dual LDO delivering stable bias voltages to pixel array and column ADCs, minimizing fixed-pattern noise and quantization error. Use Value: Factory-preset outputs eliminate external resistors; 60mV dropout extends battery runtime during flash-assisted low-light capture sequences. |
| Notebook Computer USB Peripherals | Wireless LAN Card RF Front-End |
Use Scenario: Providing dedicated 3.3V supply to USB 2.0 PHY and 1.5V supply to embedded controller in ultraportable notebooks. IC Role / Device Role / Timing Role: Independent shutdown control allows dynamic power gating of USB ports and EC subsystems during suspend/resume cycles. Use Value: 0.01µA shutdown current enables compliance with ACPI S3/S4 power states; 300mA per channel supports hot-plug enumeration and charging. | Use Scenario: Delivering clean 3.3V to WLAN MAC and 1.5V to RF synthesizer in mini-PCIe wireless cards. IC Role / Device Role / Timing Role: Dual LDO with high PSRR isolates sensitive RF circuitry from noisy digital bus activity on the host interface. Use Value: BP pin bypass reduces phase noise in local oscillator signals; thermal shutdown prevents damage during antenna detuning events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Texas Instruments TPS7A202030PDBVR | Single-output (not dual); 300mA, 1.8V/3.0V variants available; lower IQ (6.5µA) but higher noise (12µVRMS typ). | Requires two separate ICs to replicate dual-rail functionality; lacks independent shutdown control per channel. | Select when ultra-low quiescent current dominates over integration and noise performance. |
| Analog Devices ADP5052ACPZ-R7 | Dual 600mA LDOs; higher current rating but larger 20-lead LFCSP package; 45µVRMS noise; requires external feedback resistors. | Supports higher load currents and wider output voltage range (0.8V–3.3V), but increases layout complexity and solution size. | Select when >300mA per rail or programmable outputs are required, and board space permits larger footprint. |
Compared with TPS7A202030PDBVR and ADP5052ACPZ-R7, the MAX8559ETA8A-T uniquely combines factory-preset dual outputs, 32µVRMS noise, and independent shutdown in a 3mm × 3mm TDFN-making it optimal for space-constrained, noise-sensitive dual-rail applications where BOM minimization is critical.
Availability
MAX8559ETA8A-T is available at Aetrix Electronics and suitable for cellular phones, digital cameras, notebook computers, and wireless LAN cards requiring stable component supply with guaranteed long-term availability.
Supply support for MAX8559ETA8A-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) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX8559 product line delivers dual, low-noise, low-quiescent-current LDOs optimized for battery-powered portable electronics where small size, high PSRR, and independent rail control are essential.
FAQ
What output voltages does the MAX8559ETA8A-T provide?
The MAX8559ETA8A-T provides factory-preset outputs of 1.5V on OUTA and 3.3V on OUTB. These values are laser-trimmed during manufacturing and require no external feedback components. The '8A' suffix in the part number explicitly denotes this 1.5V/3.3V configuration, as confirmed in the Output Voltage Selector Guide within the MAX8559 datasheet.
Does the MAX8559ETA8A-T require input bypass capacitors?
No, the MAX8559ETA8A-T is designed to operate stably without mandatory input bypass capacitors-only output capacitors are required. For loads up to 150mA, use 2.2µF ceramic capacitors on each output; for 300mA loads, use ≥4.7µF. This no-input-bypass feature reduces total solution size and BOM count compared to conventional LDOs.
How does the BP pin function in the MAX8559ETA8A-T?
The BP (Reference Noise Bypass) pin in the MAX8559ETA8A-T connects to an internal 1.25V bandgap reference node. Adding a 0.01µF low-leakage ceramic capacitor between BP and GND forms a low-pass filter that reduces output voltage noise to ≤32µVRMS (100Hz–100kHz). Omitting the BP capacitor increases noise to 254µVRMS but saves board space and cost when noise is not critical.
What thermal protection features does the MAX8559ETA8A-T include?
The MAX8559ETA8A-T incorporates independent thermal-overload protection for each LDO channel, triggering shutdown at +160°C junction temperature with 10°C hysteresis. When activated, the affected pass transistor turns off, allowing the die to cool before automatic recovery. This prevents permanent damage during sustained overloads or poor PCB thermal design, and is distinct from the global shutdown controlled by SHDNA/SHDNB pins.
Can the MAX8559ETA8A-T be used with ceramic output capacitors only?
Yes, the MAX8559ETA8A-T is specifically optimized for ceramic output capacitors (X5R/X7R dielectrics recommended). It remains stable with 2.2µF capacitors for ≤150mA loads and requires ≥4.7µF for full 300mA operation across the -40°C to +85°C range. Tantalum capacitors are explicitly not recommended due to ESR and reliability concerns outlined in the Applications Information section.
MAX8559ETA8A-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.5V, 3.3V
- 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:
- 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-TDFN (3x3)
MAX8559ETA8A-T FAQ
1.How can I place an order for MAX8559ETA8A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8559ETA8A-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 MAX8559ETA8A-T reliable?
The price and inventory of MAX8559ETA8A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8559ETA8A-T is usually 5 days.
3.What payment methods are accepted for MAX8559ETA8A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8559ETA8A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8559ETA8A-T?
MAX8559ETA8A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8559ETA8A-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 MAX8559ETA8A-T?
For technical support, including MAX8559ETA8A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8559ETA8A-T requirements.
6.How does Aetrix verify that MAX8559ETA8A-T is sourced from the original manufacturer or authorized distributors?
All MAX8559ETA8A-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 MAX8559ETA8A-T meets industry standards.
7.What is the process for return or replacement of MAX8559ETA8A-T?
All MAX8559ETA8A-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8559ETA8A-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 MAX8559ETA8A-T part is unused and in its original packaging.
Return procedure for MAX8559ETA8A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8559ETA8A-T Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
