My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8559ETA88+
- Part No.:
- MAX8559ETA88+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX8559ETA88+.pdf
- Description:
- IC REG LINEAR DUAL LOW NOISE
- Quantity:
- Payment:
- Shipping:
Inventory:24,992
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX8559ETA88+ from Maxim Integrated is a dual, low-noise, low-dropout (LDO) linear regulator in an 8-pin TDFN-EP package, delivering up to 300mA per channel from 2.5V–6.5V input. It features factory-preset 1.5V outputs for both channels, 32µVRMS output noise, 70dB PSRR at 10kHz, and independent logic-controlled shutdown inputs. It is designed for space-constrained, battery-powered systems requiring clean, stable dual-rail power.
For engineers reviewing the MAX8559ETA88+ datasheet, MAX8559ETA88+ pinout, MAX8559ETA88+ application, or MAX8559ETA88+ equivalent, key selection criteria include dual-channel dropout performance (60mV at 100mA), ultra-low quiescent current (115µA per LDO), thermal and short-circuit protection, and compatibility with small ceramic capacitors without mandatory bypass.
Technical Context
The MAX8559ETA88+ integrates two independent P-channel MOSFET pass transistors (RDS(ON) ≈ 0.6Ω), enabling load-proportional dropout voltage and eliminating base-drive current loss typical of PNP-based regulators. Its feedback loop uses a 1.25V bandgap reference and internal resistor dividers to maintain ±3% output voltage accuracy across –40°C to +85°C and 0.1–300mA load range.
Each LDO includes autonomous current limiting (310mA min), thermal shutdown at +160°C 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 output noise to ≤32µVRMS (100Hz–100kHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 1.5V per channel, factory-preset - eliminates external resistor networks and ensures tight matching between rails. |
| Max Output Current | 300mA per LDO - supports moderate-power digital ICs (e.g., baseband processors, RF front-ends) without external boost stages. |
| Dropout Voltage | 60mV at 100mA load - enables operation down to ~1.6V input for 1.5V output, extending usable battery life in Li-ion and Li-poly systems. |
| Output Noise | 32µVRMS (100Hz–100kHz) with 0.01µF BP cap - meets stringent noise requirements for RF receivers, ADC references, and precision analog circuitry. |
| PSRR | 70dB at 10kHz - suppresses switching noise from upstream DC/DC converters, reducing need for additional filtering stages. |
| Quiescent Current | 115µA per LDO at no load - minimizes standby power loss in always-on subsystems such as real-time clocks or sensor wake-up circuits. |
| Shutdown Current | 0.01µA when both SHDNA and SHDNB are low - enables deep-sleep modes in portable devices with µA-level system leakage budgets. |
Pinout & Package
MAX8559ETA88+ uses an 8-pin TDFN-EP (3mm × 3mm, 0.8mm height) with exposed paddle for thermal dissipation. The package is RoHS-compliant and lead-free (+ suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INA) | LDO A Input | Primary input for Channel A; must be bypassed with ≥2.2µF ceramic capacitor to GND for stability and transient response. |
| 2 (SHDNA) | Channel A Shutdown Control | Logic-low disables LDO A; internal 385Ω discharge path pulls OUTA to GND during shutdown - prevents floating rail issues. |
| 3 (SHDNB) | Channel B Shutdown Control | Independent logic-low control for LDO B; allows asymmetric power sequencing (e.g., keep VCC_IO active while disabling VCC_CORE). |
| 4 (INB) | LDO B Input | Shared input with INA in most designs; supports separate input routing if supply domains differ (e.g., noisy vs. clean rails). |
| 5 (OUTB) | LDO B Output | 300mA-capable regulated output; requires ≥2.2µF ceramic capacitor to GND - larger values (4.7µF+) improve load-transient response. |
| 6 (GND) | Power Ground | Common return for both LDOs and internal circuitry; must be connected directly to PCB ground plane under exposed paddle. |
| 7 (BP) | Noise Bypass Reference | Connects to internal 1.25V reference; 0.01µF ceramic cap here reduces output noise by filtering high-frequency reference noise. |
| 8 (OUTA) | LDO A Output | 1.5V regulated output; identical specs to OUTB - enables matched dual-rail generation for I/O and core logic in low-voltage SoCs. |
| EP (Exposed Paddle) | Thermal & Electrical Ground | Soldered to PCB ground plane; provides primary thermal path (θJA = 41°C/W typical) and lowers impedance for GND return currents. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | Enables split-rail power delivery (e.g., 1.5V core + 1.5V I/O) with separate enable control - simplifies power sequencing in multi-voltage ASICs. |
| Low 32µVRMS noise | Meets noise-sensitive analog/RF requirements without external LC filters - reduces bill-of-materials and board area in handheld instruments. |
| 60mV dropout @ 100mA | Extends effective battery voltage range: a 3.7V Li-ion cell delivers full 1.5V output until cell voltage drops to ~1.6V - increases runtime by >15% vs. higher-dropout regulators. |
| 115µA IQ per LDO | Supports ultra-low-power sleep states: two enabled LDOs draw only 230µA total - ideal for always-on sensor nodes with multi-year battery life. |
| Thermal + short-circuit protection | Auto-recovering shutdown prevents damage during overload or poor heatsinking - eliminates need for external current-limiting or thermal monitoring circuits. |
Applications
| Cellular Handsets | Digital Cameras |
|---|---|
Use Scenario: Powering baseband processor I/O banks and camera sensor interface (MIPI CSI-2) in slim smartphones. IC Role / Device Role / Timing Role: Dual-rail LDO providing clean, sequenced 1.5V supplies to high-speed digital interfaces with minimal noise coupling. Use Value: 32µVRMS noise and 70dB PSRR prevent bit errors on MIPI lanes; independent shutdown enables dynamic power gating of unused peripherals. |
Use Scenario: Supplying image signal processor (ISP) core and memory I/O in compact digital still/video cameras. IC Role / Device Role / Timing Role: Low-noise dual LDO delivering tightly regulated 1.5V rails for ISP logic and DDR interface buffers. Use Value: 60mV dropout extends battery life during burst capture; thermal protection avoids shutdown during extended video recording sessions. |
| Wireless LAN Cards | Handheld Test Instruments |
Use Scenario: Regulating power for 2.4GHz/5GHz WLAN SoC RF transceivers and MAC controllers in mini-PCIe modules. IC Role / Device Role / Timing Role: Dual LDO supplying isolated 1.5V rails to RF front-end and digital baseband sections to minimize cross-talk. Use Value: Channel-to-channel isolation >60dB (10kHz–1MHz) prevents RF noise injection into digital logic; small 3×3mm footprint saves critical PCB area. |
Use Scenario: Providing precision analog supply rails for ADC reference buffers and op-amp signal chains in portable multimeters and oscilloscopes. IC Role / Device Role / Timing Role: Ultra-low-noise dual LDO generating matched 1.5V supplies for high-resolution data acquisition subsystems. Use Value: 32µVRMS noise ensures <1 LSB error in 16-bit ADCs; independent shutdown allows selective powering of measurement channels to conserve battery. |
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-output (2.5V/2.5V), 300mA, 16µVRMS noise, but lacks independent shutdown and dual-rail flexibility. | Requires two devices for dual 1.5V rails; no BP pin or thermal protection - unsuitable for thermally constrained handhelds. | Select only if single-rail simplicity and lower noise outweigh need for dual independent control and protection. |
| ADP125ARHZ-1.5-R7 | Single 1.5V, 500mA LDO with 45µVRMS noise and 130µA IQ; no second channel or BP pin. | Cannot replace dual-rail functionality without redesign; higher noise degrades SNR in RF/analog sections. | Use only as drop-in replacement for one channel where higher noise and missing protections are acceptable. |
Compared with TPS7A202525PDBVR and ADP125ARHZ-1.5-R7, the MAX8559ETA88+ uniquely delivers matched dual 1.5V rails with independent control, sub-35µV noise, and integrated thermal/short-circuit protection - making it the only solution meeting all requirements for compact, battery-powered dual-rail systems.
Availability
MAX8559ETA88+ is available at Aetrix Electronics and suitable for cellular handsets, digital cameras, wireless LAN cards, and handheld test instruments requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX8559ETA88+ 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-quiescent-current LDO family, engineered specifically for battery-powered portable electronics where efficiency, noise immunity, and minimal board area are critical design constraints.
FAQ
What output voltages does the MAX8559ETA88+ provide?
The MAX8559ETA88+ is factory-configured with fixed 1.5V outputs on both OUTA and OUTB channels. This preset value is laser-trimmed during manufacturing and cannot be adjusted externally. The '88' in the part number corresponds to the 1.5V/1.5V output code per Maxim's Output Voltage Selector Guide. No external feedback resistors are required, simplifying layout and improving accuracy over temperature and load.
Does the MAX8559ETA88+ require an output capacitor, and what value is recommended?
Yes, the MAX8559ETA88+ requires ceramic output capacitors for stability and transient performance. For loads up to 150mA, a 2.2µF capacitor per output is sufficient; for full 300mA capability across the full temperature range, a minimum of 4.7µF per output is required. X7R or X5R dielectrics are recommended - Z5U/Y5V types may require larger values below –10°C to ensure stability.
How does the BP pin function in the MAX8559ETA88+, and is its capacitor optional?
The BP pin connects to the internal 1.25V reference and forms a low-pass filter with an external 0.01µF ceramic capacitor to reduce reference noise. With this capacitor, MAX8559ETA88+ achieves ≤32µVRMS output noise (100Hz–100kHz); omitting it increases noise to 254µVRMS. While optional for cost/size reduction, the BP capacitor is strongly recommended for noise-sensitive applications like RF receivers or precision ADCs.
Can the MAX8559ETA88+ operate without an input bypass capacitor?
No - the MAX8559ETA88+ requires input bypass capacitors on INA and INB for stability and line-transient suppression. A minimum of 2.2µF ceramic capacitor per input is specified; 4.7µF improves performance under 300mA loads. Larger values and lower-ESR capacitors further enhance PSRR and transient response, especially when powered from noisy DC/DC converters.
What thermal protection behavior does the MAX8559ETA88+ exhibit under overload conditions?
Under thermal overload, the MAX8559ETA88+ activates independent thermal sensors per channel. When junction temperature exceeds +160°C, the affected LDO shuts off; it automatically resumes regulation once temperature falls by 10°C. This results in pulsed output during sustained overload - protecting the device without requiring external thermal monitoring or latch-off circuitry.
MAX8559ETA88+ 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, 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+ FAQ
1.How can I place an order for MAX8559ETA88+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8559ETA88+ 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+ reliable?
The price and inventory of MAX8559ETA88+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8559ETA88+ is usually 5 days.
3.What payment methods are accepted for MAX8559ETA88+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8559ETA88+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8559ETA88+?
MAX8559ETA88+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8559ETA88+ 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+?
For technical support, including MAX8559ETA88+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8559ETA88+ requirements.
6.How does Aetrix verify that MAX8559ETA88+ is sourced from the original manufacturer or authorized distributors?
All MAX8559ETA88+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX8559ETA88+?
All MAX8559ETA88+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8559ETA88+, 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+ part is unused and in its original packaging.
Return procedure for MAX8559ETA88+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8559ETA88+ 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…
