My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8559ETA8A
- Part No.:
- MAX8559ETA8A
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX8559ETA8A.pdf
- Description:
- IC REG LIN DUAL 300MA LO NOISE
- Quantity:
- Payment:
- Shipping:
Inventory:1,129
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX8559ETA8A from Maxim Integrated is a dual, low-noise, low-dropout linear regulator delivering 300mA per channel with factory-preset outputs of 1.5V (OUTA) and 3.3V (OUTB), operating from 2.5V to 6.5V input. It features 32µVRMS output noise, 70dB PSRR at 10kHz, and 60mV dropout at 100mA load-enabling high-precision power for noise-sensitive RF and analog circuitry in portable electronics.
For engineers reviewing the MAX8559ETA8A datasheet, MAX8559ETA8A pinout, MAX8559ETA8A application, or MAX8559ETA8A equivalent, key selection criteria include independent shutdown control, ultra-low quiescent current (115µA per LDO), dual-output voltage flexibility, and compatibility with small ceramic capacitors without requiring BP bypass for basic operation.
Technical Context
The MAX8559ETA8A 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), thermal shutdown at +160°C with 10°C hysteresis, and internal 385Ω discharge paths for both outputs during shutdown. The device operates stably with 2.2µF–4.7µF ceramic output capacitors and optionally uses a 0.01µF capacitor on BP to reduce output noise below 32µVRMS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage (OUTA / OUTB) | 1.5V / 3.3V factory-preset - eliminates external feedback resistors and ensures ±3% accuracy over -40°C to +85°C. |
| Max Output Current | 300mA per channel - supports dual-rail loads like baseband processors and RF front-ends without derating at full temperature range. |
| Dropout Voltage | 60mV at 100mA - enables >98% efficiency at light-to-moderate loads and extends usable battery life in 2-cell Li-ion systems. |
| Output Noise | 32µVRMS (100Hz–100kHz, with 0.01µF BP cap) - meets stringent noise requirements for ADC references and VCO supply rails. |
| PSRR | 70dB at 10kHz - suppresses switching noise from adjacent DC/DC converters feeding the same battery source. |
| Quiescent Current | 115µA per LDO (no load) - minimizes standby power in always-on subsystems such as real-time clocks or sensor interfaces. |
| Shutdown Current | 0.01µA (both SHDN inputs low) - enables true zero-power state for long-term storage or deep-sleep modes. |
Pinout & Package
MAX8559ETA8A is packaged in 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 |
|---|---|---|
| 1 (INA) | LDO A Input | Primary input rail for OUTA; must be bypassed with ≥2.2µF ceramic capacitor to GND; shared with INB in most designs. |
| 2 (SHDNA) | Shutdown A Control | Active-low logic input; pulls OUTA to 0V and discharges it via 385Ω when low; compatible with 1.6V VIH/0.4V VIL CMOS levels. |
| 3 (SHDNB) | Shutdown B Control | Independent active-low control for OUTB; allows asymmetric power sequencing (e.g., keep 3.3V active while disabling 1.5V). |
| 4 (INB) | LDO B Input | Input rail for OUTB; electrically tied to INA in standard configurations; shares same input capacitor network. |
| 5 (OUTB) | LDO B Output | 3.3V regulated output; sources up to 300mA; internally discharged to GND via 385Ω during SHDNB assertion. |
| 6 (GND) | Analog/Digital Ground | Common return path for both LDOs and internal reference; must connect directly to PCB ground plane under exposed paddle. |
| 7 (BP) | Noise Bypass Terminal | Connects to internal 1.25V reference; 0.01µF ceramic cap here reduces output noise by filtering reference ripple. |
| 8 (OUTA) | LDO A Output | 1.5V regulated output; sources up to 300mA; discharged via same 385Ω path as OUTB during SHDNA assertion. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | Enables split-rail power delivery (e.g., 1.5V core + 3.3V I/O) with separate enable control-critical for power sequencing in SoC-based systems. |
| Low-noise architecture | 32µVRMS output noise with BP bypass supports sensitive analog circuits (e.g., RF synthesizers, precision ADCs) without additional filtering. |
| P-channel MOSFET pass devices | Eliminates base-drive current loss and delivers lower dropout than PNP alternatives-improves efficiency and thermal performance at high loads. |
| Thermal and short-circuit protection | Auto-shutdown at +160°C junction temperature with 10°C hysteresis prevents damage during sustained overload or poor heatsinking. |
| No-bypass-capacitor operation | Stable with only input/output ceramics (no BP cap required)-reduces BOM count and board area for cost-sensitive or space-constrained designs. |
Applications
| Cellular Phone Baseband | Digital Camera Image Sensor |
|---|---|
|
Use Scenario: Powering ARM9 application processor core (1.5V) and SDIO interface (3.3V) from single Li-ion cell. IC Role / Device Role: Dual-rail LDO providing isolated, low-noise supplies with independent enable for dynamic voltage scaling and peripheral power gating. Use Value: Enables 1.5V/3.3V sequencing without external logic; 60mV dropout extends talk time by >12 minutes versus higher-dropout alternatives. |
Use Scenario: Supplying CIS analog front-end (1.5V) and digital image pipeline (3.3V) in compact point-and-shoot camera. IC Role / Device Role: Low-noise dual regulator minimizing pixel noise and clock jitter in high-resolution sensor readout paths. Use Value: 32µVRMS noise ensures <1 LSB error in 12-bit ADC conversion; independent shutdown reduces standby current to 0.01µA. |
| Wireless LAN Card | Handheld Test Instrument |
|
Use Scenario: Delivering clean 1.5V bias to WLAN RF transceiver and 3.3V to MAC controller in mini-PCIe form factor. IC Role / Device Role: Dual LDO suppressing switching noise from host-side DC/DC converter while maintaining tight output accuracy. Use Value: 70dB PSRR at 10kHz prevents RF desense; 2.2µF ceramic caps meet size constraints without sacrificing stability. |
Use Scenario: Powering precision op-amp signal chain (1.5V) and microcontroller peripherals (3.3V) in battery-operated multimeter. IC Role / Device Role: Ultra-low-IQ dual regulator extending battery life while maintaining ±0.5% output regulation across temperature. Use Value: 115µA per LDO enables >12-month shelf life; thermal shutdown protects against probe short-circuit faults. |
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 TPS7A202533 | 1.5V/3.3V dual output; 300mA per channel; 16µVRMS noise; requires external BP cap for lowest noise. | Lower noise but no independent shutdown-both outputs enable/disable together; lacks thermal shutdown hysteresis. | Select when ultra-low noise dominates over independent control; verify sequencing compatibility with system firmware. |
| Analog Devices ADP5052ACPZ-1-R7 | 1.5V/3.3V dual output; 600mA per channel; 45µVRMS noise; integrated power-good indicators. | Higher current capability and PG pins-but larger 20-pin LFCSP package (4mm × 4mm); 220µA quiescent current per LDO. | Select when future-proofing for higher load currents or need for power-status signaling; accept larger footprint and higher IQ. |
Compared with TPS7A202533 and ADP5052ACPZ-1-R7, the MAX8559ETA8A uniquely balances independent shutdown, ultra-low IQ, and minimal footprint-making it optimal for space-constrained, battery-sensitive dual-rail systems where sequencing flexibility and standby efficiency are critical.
Availability
MAX8559ETA8A is available at Aetrix Electronics and suitable for cellular phones, digital cameras, wireless LAN cards, and handheld instruments requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for MAX8559ETA8A 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 belongs to Maxim's low-noise, low-IQ LDO family designed specifically for battery-powered portable electronics demanding dual-rail precision regulation with minimal solution size.
FAQ
What are the factory-set output voltages for MAX8559ETA8A?
The MAX8559ETA8A has fixed output voltages of 1.5V on OUTA and 3.3V on OUTB, set at wafer level using internal resistor dividers. These values are confirmed in the Output Voltage Selector Guide and require no external components for regulation. The MAX8559ETA8A maintains ±3% accuracy across -40°C to +85°C and full load range (0.1mA to 300mA).
Does MAX8559ETA8A require a bypass capacitor on the BP pin?
The MAX8559ETA8A does not require a bypass capacitor on BP for stable operation, but adding a 0.01µF ceramic capacitor reduces output noise from 254µVRMS to 32µVRMS (100Hz–100kHz). The MAX8559ETA8A datasheet confirms this optional cap improves noise performance without affecting regulation or stability-ideal when powering noise-sensitive analog circuits.
Can MAX8559ETA8A operate from a 2.5V input while regulating 3.3V on OUTB?
No-the MAX8559ETA8A cannot regulate 3.3V from a 2.5V input because the minimum input voltage must exceed the output voltage by the dropout margin. At 300mA load, dropout is ~120mV; thus, ≥3.42V input is required for 3.3V regulation. The MAX8559ETA8A is intended for use with inputs ≥2.5V only when outputting ≤2.5V (e.g., 1.5V/1.8V variants), or ≥3.4V for 3.3V outputs.
How does thermal shutdown behave on MAX8559ETA8A?
The MAX8559ETA8A features per-regulator thermal detectors that disable individual pass transistors when junction temperature exceeds +160°C, with 10°C hysteresis. During continuous overload, this causes pulsed output rather than latch-off. The MAX8559ETA8A resumes normal operation once die temperature falls below +150°C-protecting the device without requiring system-level reset intervention.
Is MAX8559ETA8A pin-compatible with other MAX8559 variants in TDFN package?
Yes-MAX8559ETA8A shares identical 8-pin TDFN-EP pinout and footprint with all MAX8559ETAxx variants (e.g., ETA22, ETAJJ, ETAGG). The only differences are factory-set output voltages and top-mark codes; electrical characteristics, timing, and thermal behavior remain consistent across the ETA family. This enables drop-in replacement during design iteration or voltage optimization.
MAX8559ETA8A 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):
- 220 µA
- 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 FAQ
1.How can I place an order for MAX8559ETA8A through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8559ETA8A 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 reliable?
The price and inventory of MAX8559ETA8A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8559ETA8A is usually 5 days.
3.What payment methods are accepted for MAX8559ETA8A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8559ETA8A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8559ETA8A?
MAX8559ETA8A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8559ETA8A 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?
For technical support, including MAX8559ETA8A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8559ETA8A requirements.
6.How does Aetrix verify that MAX8559ETA8A is sourced from the original manufacturer or authorized distributors?
All MAX8559ETA8A 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 meets industry standards.
7.What is the process for return or replacement of MAX8559ETA8A?
All MAX8559ETA8A units undergo pre-shipment inspection (PSI). If there is an issue with MAX8559ETA8A, 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 part is unused and in its original packaging.
Return procedure for MAX8559ETA8A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8559ETA8A 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
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
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…
