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Analog Devices Inc./Maxim Integrated MAX8559ETA88+T
- Part No.:
- MAX8559ETA88+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX8559ETA88+T.pdf
- Description:
- IC REG LINEAR 1.5V/1.5V 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
MAX8559ETA88+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 1.5V outputs, 32µVRMS output noise, and 60mV dropout at 100mA load-designed for power rail sequencing in compact battery-powered systems such as digital cameras and handheld instruments.
For engineers reviewing the MAX8559ETA88+T datasheet, MAX8559ETA88+T pinout, MAX8559ETA88+T application, or MAX8559ETA88+T equivalent, key selection criteria include independent shutdown control, ultra-low quiescent current (115µA per LDO), thermal/short-circuit protection, and compatibility with small ceramic capacitors without requiring BP bypass for basic operation.
Technical Context
The MAX8559ETA88+T 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. Its architecture delivers load-dependent dropout voltage and maintains stable operation with 2.2µF–4.7µF ceramic output capacitors across –40°C to +85°C.
Each LDO features dedicated SHDN inputs, internal autodischarge (385Ω to GND), and separate current limiting (310mA min). The device operates with or without the 0.01µF BP capacitor-enabling trade-offs between noise performance (32µVRMS) and solution size.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.5V per channel, factory-preset-eliminates external resistor networks and ensures ±2% accuracy over temperature and load. |
| Max Output Current | 300mA per LDO-supports high-current digital subsystems (e.g., image sensors, RF ICs) with single-chip dual-rail supply. |
| Dropout Voltage | 60mV at 100mA load-enables >98% efficiency at light-to-moderate loads and extends usable battery life in 2-cell Li-ion systems. |
| Output Noise | 32µVRMS (100Hz–100kHz)-meets stringent analog/RF supply requirements without additional filtering stages. |
| PSRR | 70dB at 10kHz-rejects switching noise from adjacent DC-DC converters in mixed-signal portable designs. |
| Quiescent Current | 115µA per LDO (no load)-minimizes standby power in always-on subsystems like real-time clocks or sensor interfaces. |
| Shutdown Current | 0.01µA (both LDOs off)-enables deep-sleep modes with nanowatt-level system leakage. |
Pinout & Package
MAX8559ETA88+T is housed in an 8-pin TDFN-EP package (3mm × 3mm, 0.8mm height) with exposed thermal pad soldered to PCB ground plane for enhanced power dissipation (1.95W capability).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 INA | LDO A Input | Primary input for first regulator; accepts 2.5V–6.5V; must be bypassed with ≥2.2µF ceramic capacitor to GND. |
| 2 SHDNA | LDO A Shutdown Control | Logic-low disables OUTA; internal 385Ω discharge path pulls OUTA to GND during shutdown. |
| 3 SHDNB | LDO B Shutdown Control | Logic-low disables OUTB; independent of SHDNA-enables asymmetric power sequencing. |
| 4 INB | LDO B Input | Primary input for second regulator; electrically tied to INA in typical use; requires same bypassing as INA. |
| 5 OUTB | LDO B Output | Regulated 1.5V output sourcing up to 300mA; internally discharged to GND via 385Ω when SHDNB = low. |
| 6 GND | Ground Reference | Common return for both LDOs and internal circuitry; must connect directly to low-impedance PCB ground plane. |
| 7 BP | Noise Bypass Terminal | Accepts 0.01µF ceramic capacitor to reduce output noise; optional for non-critical noise applications. |
| 8 OUTA | LDO A Output | Regulated 1.5V output sourcing up to 300mA; identical behavior and discharge path as OUTB. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | Enables split-rail or isolated power domains (e.g., core + I/O) with no cross-talk-channel-to-channel isolation >60dB at 10kHz. |
| Factory-preset 1.5V outputs | Eliminates external feedback resistors, reduces BOM count, and guarantees tight initial accuracy (±1% typ at +25°C). |
| Low-noise operation (32µVRMS) | Supports noise-sensitive analog circuits (e.g., ADC references, RF synthesizers) without requiring post-regulation LC filters. |
| Thermal & short-circuit protection | Auto-recovering shutdown at +160°C junction temperature with 10°C hysteresis-prevents permanent damage under fault conditions. |
| Independent shutdown with autodischarge | Allows selective power gating of subsystems while ensuring rapid output voltage collapse (<1ms) to prevent back-powering. |
| Capacitor-flexible stability | Stable with 2.2µF (≤150mA) or 4.7µF (≤300mA) ceramic output caps-avoids costly tantalum or polymer alternatives. |
Applications
| Cellular Baseband Power | Digital Camera Sensor Supply |
|---|---|
|
Use Scenario: Providing clean, sequenced 1.5V rails to baseband processor cores and memory interfaces in 4G/LTE smartphones. IC Role / Device Role / Timing Role: Dual LDO delivering tightly regulated, independently controlled 1.5V supplies with fast transient response to dynamic CPU load changes. Use Value: Prevents logic errors during burst-mode processing by maintaining <±1% output regulation under 100mA step loads with <15mV overshoot. |
Use Scenario: Powering CMOS image sensor analog front-end and digital interface in compact digital cameras. IC Role / Device Role / Timing Role: Low-noise 1.5V source for sensor bias and ADC reference, decoupled from noisy digital supply domains. Use Value: Achieves 32µVRMS noise floor-critical for preserving SNR in 12-bit+ image capture without added filtering components. |
| Handheld Instrument LCD Bias | PCMCIA Card Core Logic |
|
Use Scenario: Generating stable 1.5V bias for LCD driver ICs and touch controller in portable test equipment. IC Role / Device Role / Timing Role: Dual-output LDO supplying independent 1.5V rails to display subsystem and microcontroller, with programmable enable timing. Use Value: Independent SHDNA/SHDNB pins allow staggered power-up-preventing inrush current peaks exceeding 600mA total. |
Use Scenario: Delivering 1.5V core voltage to PCMCIA card controllers and interface logic in legacy industrial laptops. IC Role / Device Role / Timing Role: Compact dual LDO replacing discrete regulators in space-constrained Type II card slots. Use Value: 3mm × 3mm TDFN footprint fits within strict card thickness limits while supporting full 300mA peak loads during data transfer. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A202525PDBVR | Single-channel only; 250mA max; 1.5V/2.5V dual-output variant not available-requires two devices for dual 1.5V rails. | Lacks independent shutdown per channel; uses shared EN pin-unsuitable for asymmetric power sequencing. | Select when board area allows dual single-channel devices and sequencing simplicity is prioritized over integration. |
| MCP1826-1502-002E/DB | Fixed 1.5V/2.0V dual output; no 1.5V/1.5V option; higher 250µA quiescent current per LDO. | Higher dropout (170mV @100mA) reduces usable battery range in 2-cell Li-ion systems below 3.2V. | Choose when 2.0V auxiliary rail is needed alongside 1.5V, and lower noise (32µVRMS) is not required. |
Compared with TPS7A202525PDBVR and MCP1826-1502-002E/DB, MAX8559ETA88+T uniquely provides matched 1.5V dual outputs with independent control, lowest noise, and smallest dropout-making it optimal for space- and noise-constrained dual-rail battery systems where rail matching and sequencing fidelity are critical.
Availability
MAX8559ETA88+T is available at Aetrix Electronics and suitable for digital camera sensor supplies, handheld instrument LCD bias, and PCMCIA card core logic requiring stable component supply, long-term lifecycle support, and lead-free compliance.
Supply support for MAX8559ETA88+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 and mixed-signal ICs for power, sensing, and communication applications.
The MAX8559 belongs to Maxim's precision low-noise LDO family, engineered specifically for battery-powered portable electronics demanding ultra-low quiescent current, tight output accuracy, and minimal solution footprint.
FAQ
What output voltage does the MAX8559ETA88+T provide?
The MAX8559ETA88+T delivers two independent, factory-preset 1.5V outputs (OUTA and OUTB) with ±2% accuracy over –40°C to +85°C and load currents up to 300mA. This fixed configuration eliminates external feedback resistors and ensures consistent performance without calibration.
Does the MAX8559ETA88+T require an external BP capacitor?
The MAX8559ETA88+T does not require the 0.01µF BP capacitor for basic operation, but including it reduces output noise from 254µVRMS to 32µVRMS (100Hz–100kHz). Omitting BP saves board space and cost when noise sensitivity is low-verified in the Electrical Characteristics table.
What is the maximum power dissipation of the MAX8559ETA88+T in its TDFN package?
The MAX8559ETA88+T in the 8-pin TDFN-EP package supports up to 1951mW continuous power dissipation at +70°C ambient, derating by 24.4mW/°C above that temperature. This enables robust operation at full 300mA load per channel with moderate input–output differentials.
How does the MAX8559ETA88+T handle thermal overload?
The MAX8559ETA88+T incorporates independent thermal sensors per LDO. When junction temperature exceeds +160°C, the affected regulator shuts down and automatically recovers once temperature drops by 10°C-providing self-protecting pulsed operation during sustained overload without latch-up.
Can the MAX8559ETA88+T operate with ceramic output capacitors smaller than 4.7µF?
Yes-the MAX8559ETA88+T is stable with 2.2µF ceramic output capacitors for loads ≤150mA per channel, as confirmed in the Applications Information section. For full 300mA operation across temperature, ≥4.7µF is required to ensure phase margin and transient stability.
MAX8559ETA88+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.5V, 1.5V
- 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-TDFN (3x3)
MAX8559ETA88+T FAQ
1.How can I place an order for MAX8559ETA88+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8559ETA88+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 MAX8559ETA88+T reliable?
The price and inventory of MAX8559ETA88+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8559ETA88+T is usually 5 days.
3.What payment methods are accepted for MAX8559ETA88+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8559ETA88+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8559ETA88+T?
MAX8559ETA88+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8559ETA88+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 MAX8559ETA88+T?
For technical support, including MAX8559ETA88+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8559ETA88+T requirements.
6.How does Aetrix verify that MAX8559ETA88+T is sourced from the original manufacturer or authorized distributors?
All MAX8559ETA88+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 MAX8559ETA88+T meets industry standards.
7.What is the process for return or replacement of MAX8559ETA88+T?
All MAX8559ETA88+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8559ETA88+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 MAX8559ETA88+T part is unused and in its original packaging.
Return procedure for MAX8559ETA88+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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