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Analog Devices Inc./Maxim Integrated MAX8559ETAJG+T
- Part No.:
- MAX8559ETAJG+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX8559ETAJG+T.pdf
- Description:
- IC REG LINEAR 2.85V/3V 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,097
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Product details
Overview
MAX8559ETAJG+T from Maxim Integrated is a dual, low-noise, low-dropout linear regulator delivering 300mA per channel from 2.5V–6.5V input, with factory-preset 2.85V/3.00V outputs, 60mV dropout at 100mA, and 32µVRMS output noise - used in notebook computers and wireless LAN cards for clean, independent power rails.
For engineers reviewing the MAX8559ETAJG+T datasheet, MAX8559ETAJG+T pinout, MAX8559ETAJG+T application, or MAX8559ETAJG+T equivalent, key selection criteria include dual independent shutdown control, ultra-low quiescent current (115µA per LDO), PSRR of 70dB at 10kHz, thermal/short-circuit protection, and compatibility with small ceramic capacitors without mandatory bypass.
Technical Context
The MAX8559ETAJG+T integrates two independent P-channel MOSFET pass transistors (0.6Ω RDS(ON)) with internal 1.25V bandgap reference and error amplifiers, enabling load-proportional dropout voltage and no base-drive current penalty. Each LDO features dedicated SHDN inputs, autodischarge circuitry (385Ω discharge path), and BP pin for 0.01µF noise-filtering capacitor.
It operates across –40°C to +85°C with thermal shutdown at +160°C (10°C hysteresis) and supports stable regulation using 2.2µF–4.7µF ceramic output capacitors. The device maintains 115µA supply current per LDO at no load and 220µA at 100mA load, independent of dropout voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 6.5V - supports single-cell Li-ion, Li-poly, and multi-cell alkaline/NiMH battery inputs. |
| Output Voltage(s) | 2.85V (OUTA), 3.00V (OUTB) - factory-preset, fixed, no external feedback required. |
| Max Output Current | 300mA per channel - enables powering core logic, RF ICs, or memory subsystems from compact footprint. |
| Dropout Voltage | 60mV at 100mA - extends usable battery life by allowing operation near end-of-discharge voltage. |
| Output Noise | 32µVRMS (100Hz–100kHz) - meets low-noise requirements for RF front-ends and precision analog circuits. |
| PSRR | 70dB at 10kHz - suppresses switching noise from adjacent DC/DC converters in mixed-power systems. |
| Quiescent Current | 115µA per LDO at no load - minimizes standby power loss in always-on subsystems. |
| Protection Features | Thermal shutdown (+160°C), short-circuit limit (310mA min), and output discharge in shutdown - ensures robust field reliability. |
Pinout & Package
MAX8559ETAJG+T is packaged in an 8-pin TDFN-EP (3mm × 3mm, 0.8mm height) with exposed paddle for thermal dissipation. Pin 1 is marked by a "+" sign on lead-free packages; the exposed paddle must be soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INA) | LDO A Input | Shared input rail for both regulators; requires 2.2µF–4.7µF ceramic bypass to GND. |
| 2 (SHDNA) | Shutdown A Control | Logic-low disables OUTA; internal 385Ω discharge path pulls OUTA to GND during shutdown. |
| 3 (SHDNB) | Shutdown B Control | Logic-low disables OUTB; independent of SHDNA for flexible power sequencing. |
| 4 (INB) | LDO B Input | Electrically tied to INA; same input voltage domain for dual-regulator operation. |
| 5 (OUTB) | LDO B Output | Delivers up to 300mA at 3.00V; requires 2.2µF–4.7µF ceramic output capacitor. |
| 6 (GND) | Ground Reference | Common return for all circuitry; connects to exposed paddle for optimal thermal performance. |
| 7 (BP) | Noise Bypass | Accepts 0.01µF ceramic capacitor to reduce output noise spectral density below 32µVRMS. |
| 8 (OUTA) | LDO A Output | Delivers up to 300mA at 2.85V; internally discharged via 385Ω resistor when SHDNA = low. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent shutdown | Enables selective power gating of each rail without affecting the other - critical for dynamic power management in portable systems. |
| P-channel MOSFET pass devices | Eliminates base-drive current, reducing quiescent consumption and enabling lower dropout at light loads vs. PNP-based LDOs. |
| No-bypass-capacitor operation | Supports stable regulation without mandatory BP capacitor - reduces BOM count and board area where ultra-low noise is not required. |
| Factory-preset outputs | 2.85V/3.00V outputs eliminate external resistor networks, simplifying layout and improving accuracy over temperature (±3% max). |
| Thermal overload protection | Independent thermal sensors per LDO prevent damage during sustained overload or poor heatsinking - auto-recovery with 10°C hysteresis. |
| Channel-to-channel isolation | ≥70dB isolation at 10kHz (per typical curves) minimizes crosstalk between sensitive analog and noisy digital rails. |
Applications
| Wireless LAN Cards | Notebook Computers |
|---|---|
Use Scenario: Powering 2.4GHz/5GHz RF transceivers and baseband processors requiring isolated, low-noise supplies. IC Role / Device Role / Timing Role: Dual LDO providing independent 2.85V (analog RF) and 3.00V (digital baseband) rails with <32µVRMS noise and 70dB PSRR. Use Value: Prevents RF desense and digital switching noise coupling - improves EVM and throughput stability. | Use Scenario: Supplying DDR memory I/O and chipset core logic in space-constrained ultraportable designs. IC Role / Device Role / Timing Role: Compact dual LDO delivering 300mA each from shared 3.3V or 5V intermediate bus with minimal footprint (3mm × 3mm). Use Value: Eliminates need for two discrete regulators - saves >30% board area vs. single-channel solutions. |
| Digital Cameras | Handheld Instruments |
Use Scenario: Biasing CMOS image sensor analog front-end and ISP processor under battery-varying input conditions. IC Role / Device Role / Timing Role: Dual LDO maintaining tight output accuracy (±2% typ) across –40°C to +85°C while supporting rapid load transients. Use Value: Ensures consistent ADC reference stability and image SNR despite battery sag and thermal drift. | Use Scenario: Powering precision ADCs, op-amps, and microcontrollers in battery-operated test equipment. IC Role / Device Role / Timing Role: Low-noise, low-quiescent regulator supplying 2.85V sensor bias and 3.00V MCU core with independent shutdown for sleep modes. Use Value: Extends battery life beyond 100 hours in active measurement mode while preserving signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A202830PDBVR | 2.8V/3.0V outputs, 300mA/ch, 16µVRMS noise, but requires external feedback resistors for fixed outputs. | Higher PSRR (85dB @ 10kHz) but larger 5-pin SOT-23-8 footprint and no BP pin for noise filtering. | Preferred when ultra-low noise is critical and board space allows larger package. |
| RT9013-2830 | 2.8V/3.0V outputs, 300mA/ch, 45µVRMS noise, 120mV dropout at 100mA, no BP pin. | Lacks independent shutdown - single EN pin controls both channels; no thermal shutdown hysteresis spec. | Suitable for cost-sensitive designs where independent rail control and thermal safety margin are non-critical. |
Compared with TPS7A202830PDBVR and RT9013-2830, the MAX8559ETAJG+T uniquely combines factory-fixed outputs, BP-enabled ultra-low noise, independent shutdown, and thermal hysteresis - making it optimal for high-integrity portable systems where layout area, BOM simplicity, and reliability are prioritized over marginal PSRR gain.
Availability
MAX8559ETAJG+T is available at Aetrix Electronics and suitable for notebook computers, wireless LAN cards, digital cameras, and handheld instruments requiring stable component supply with guaranteed long-term manufacturability.
Supply support for MAX8559ETAJG+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) 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 MAX8559 belongs to Maxim's low-noise, dual-LDO product line engineered specifically for battery-powered portable electronics demanding compact size, low quiescent current, and rail isolation - such as smartphones, PDAs, and wireless modules.
FAQ
What are the exact output voltages of the MAX8559ETAJG+T?
The MAX8559ETAJG+T has factory-preset outputs: OUTA delivers 2.85V and OUTB delivers 3.00V. These values are laser-trimmed during production and require no external components. The Output Voltage Selector Guide in the datasheet confirms "JG" suffix corresponds to this specific combination, with ±3% accuracy over –40°C to +85°C and full load range.
Does the MAX8559ETAJG+T require an external bypass capacitor on the BP pin?
The MAX8559ETAJG+T does not require the BP capacitor for basic operation, but installing a 0.01µF ceramic capacitor there reduces output noise from 254µVRMS to 32µVRMS (100Hz–100kHz). Omitting it saves BOM cost and board space where noise sensitivity is low - however, the BP pin must remain unconnected (not grounded) if unused.
Can the MAX8559ETAJG+T operate with only one output enabled?
Yes - the MAX8559ETAJG+T supports independent control: driving SHDNA low disables only OUTA (with internal 385Ω discharge), while SHDNB remains high to keep OUTB active, and vice versa. When both SHDNA and SHDNB are low, the entire device shuts down, drawing just 0.01µA. This enables precise power sequencing in multi-rail systems.
What is the maximum power dissipation capability of the MAX8559ETAJG+T package?
The MAX8559ETAJG+T uses an 8-pin TDFN-EP package rated for 1951mW continuous power dissipation at +70°C ambient, with derating of 24.4mW/°C above that temperature. This exceeds the UCSP variant's 379mW limit, making the TDFN version suitable for higher-input-voltage or higher-load applications where thermal headroom is constrained.
Is the MAX8559ETAJG+T RoHS-compliant and lead-free?
Yes - the "+T" suffix in MAX8559ETAJG+T explicitly denotes a lead-free, RoHS-compliant package. The device uses matte-tin plating and conforms to JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), with peak reflow temperature of +300°C for 10 seconds. Full compliance documentation is available from Analog Devices' product change notices.
MAX8559ETAJG+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 2.85V, 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.12V @ 100mA, 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)
MAX8559ETAJG+T FAQ
1.How can I place an order for MAX8559ETAJG+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8559ETAJG+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 MAX8559ETAJG+T reliable?
The price and inventory of MAX8559ETAJG+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8559ETAJG+T is usually 5 days.
3.What payment methods are accepted for MAX8559ETAJG+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8559ETAJG+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8559ETAJG+T?
MAX8559ETAJG+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8559ETAJG+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 MAX8559ETAJG+T?
For technical support, including MAX8559ETAJG+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8559ETAJG+T requirements.
6.How does Aetrix verify that MAX8559ETAJG+T is sourced from the original manufacturer or authorized distributors?
All MAX8559ETAJG+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 MAX8559ETAJG+T meets industry standards.
7.What is the process for return or replacement of MAX8559ETAJG+T?
All MAX8559ETAJG+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8559ETAJG+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 MAX8559ETAJG+T part is unused and in its original packaging.
Return procedure for MAX8559ETAJG+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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