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Analog Devices Inc./Maxim Integrated MAX25300AATA/V+T
- Part No.:
- MAX25300AATA/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX25300AATA/V+T.pdf
- Description:
- 500MA LOW NOISE LDO (CP07/V) QUI
- Quantity:
- Payment:
- Shipping:
Inventory:2,799
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Product details
Overview
The MAX25300AATA/V+T from Analog Devices is a low-noise, automotive-grade linear regulator delivering up to 500mA output current with 12µVRMS noise (10Hz–100kHz), ±1% DC accuracy over load/line/temperature, and only 100mV max dropout at full load - designed for precision power rails in audio and high-resolution data acquisition systems.
For engineers reviewing the MAX25300AATA/V+T datasheet, MAX25300AATA/V+T pinout, MAX25300AATA/V+T application, or MAX25300AATA/V+T equivalent, this page provides verified technical context, pin-level design meaning, AEC-Q100-qualified performance boundaries, and validated alternative selection guidance for automotive electronics deployment.
Technical Context
The MAX25300AATA/V+T implements a pMOS-based LDO architecture with integrated 0.6V reference and voltage-select logic decoding SELA/SELB states at enable assertion. Its low-noise regulation relies on a dedicated BYP node filtering the internal reference and enabling programmable soft-start via external capacitor.
It features reverse-current protection triggered at 10mV IN–OUT differential, thermal shutdown at +165°C (hysteresis to +150°C), and stable operation with ≥2µF ceramic output capacitance. The device operates across 1.7V–5.5V input and supports nine factory-configurable output voltages without external resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 500mA max - sustains full-rated load under worst-case 100mV dropout at 3.6VIN, enabling direct replacement of legacy 300mA LDOs in space-constrained modules. |
| Output Noise | 12µVRMS (10Hz–100kHz) - meets stringent SNR requirements for 24-bit ADCs and Class-D audio pre-amplifier rails. |
| DC Accuracy | ±1% over -40°C to +125°C, line, and load - eliminates need for post-regulation trimming in automotive control units. |
| PSRR | 70dB at 10kHz - suppresses switching noise from adjacent DC/DC converters in multi-rail infotainment systems. |
| Dropout Voltage | 100mV max at 500mA (3.6VIN) - enables efficient operation from 3.3V or 5V supplies with minimal headroom loss. |
| Supply Current | 365µA no-load, independent of dropout - ensures ultra-low quiescent power in always-on vehicle subsystems. |
| Shutdown Current | <0.1µA - meets ISO 16750-2 sleep-mode leakage limits for body control modules. |
| AEC-Q100 Grade | Grade 0 (-40°C to +125°C ambient) - qualified for engine bay and ADAS ECU deployment without derating. |
Pinout & Package
Package: 2mm × 2mm, 8-pin TDFN with exposed thermal pad (T822+3C); RoHS-compliant, automotive-qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input supply rail | Accepts 1.7V–5.5V; requires 4.7µF X5R/X7R ceramic bypass to GND; reverse-current protection activates if VOUT > VIN + 10mV. |
| 2 GND | Power ground reference | Low-impedance return path for IN/OUT capacitors; must connect to PCB ground plane with multiple thermal vias under EP. |
| 3 EN | Enable control input | Active-high logic interface (VIL = 0.7V, VIH = 1.2V); tie to IN for always-on operation; draws <1µA leakage. |
| 4 SELA | Output voltage select A | Three-state input (GND/IN/floating); sampled once at enable; selects one of nine fixed outputs per Table 1 (e.g., SELA=IN, SELB=floating → 1.5V). |
| 5 SELB | Output voltage select B | Three-state input paired with SELA; state combination determines output voltage without external components - critical for BOM simplification. |
| 6 OUTS | Output voltage sense | Remote sensing point; connects directly to load to compensate for PCB trace IR drop - improves regulation accuracy under dynamic load. |
| 7 BYP | Bypass filter node | Connects 10nF capacitor to OUT; sets soft-start slew rate (5V/ms default) and reduces 10Hz–100kHz noise by filtering reference path. |
| 8 OUT | Regulated output | Delivers up to 500mA; requires ≥2µF ceramic output cap (X5R/X7R); low-ESR (<0.03Ω) mandatory for stability. |
| EP | Exposed thermal pad | Must be soldered to solid GND plane with ≥4 thermal vias (0.3mm diameter); primary heat dissipation path (θJA = 102°C/W on 4-layer board). |
Key Features
| Feature | Design Value |
|---|---|
| Pin-selectable output | Nine factory-set voltages (1.2V–5.0V) configured solely via SELA/SELB logic states - eliminates feedback resistors and saves PCB area in multi-voltage systems. |
| Ultra-low noise | 12µVRMS (10Hz–100kHz) achieved via dedicated BYP-filtered reference and pMOS pass device - enables clean analog supply for SAR ADCs and RF bias rails. |
| Reverse-current protection | Automatic MOSFET gate disable when VIN falls 10mV below VOUT - prevents battery drain during cold-cranking or partial system power-down. |
| Programmable soft-start | Slew rate set by BYP capacitor (0.001µF–0.1µF); 10nF yields 5V/ms startup - avoids inrush current tripping upstream fuses in 12V automotive systems. |
| AEC-Q100 qualification | Grade 0 temperature range (-40°C to +125°C ambient), HTOL, ESD, and vibration tested - certified for safety-critical power domains in ADAS and powertrain ECUs. |
| Thermal fault recovery | Hysteretic shutdown (165°C trip / 150°C release) with automatic restart - maintains functionality during transient overload without requiring system-level reset intervention. |
Applications
| Infotainment Audio Power | ADAS Camera Sensor Bias |
|---|---|
|
Use Scenario: Powering high-fidelity DACs and headphone amplifiers in automotive head units where switching noise degrades THD+N. IC Role / Device Role / Timing Role: Low-noise post-regulator supplying 3.3V/500mA to audio codec ICs with remote sensing (OUTS) compensating for PCB voltage drop. Use Value: 12µVRMS noise and 70dB PSRR at 10kHz ensure >110dB SNR in 24-bit audio paths without additional LC filtering. |
Use Scenario: Providing stable 1.8V bias to CMOS image sensors in surround-view camera modules operating near engine heat sources. IC Role / Device Role / Timing Role: AEC-Q100 Grade 0 LDO delivering 1.8V/500mA with ±1% accuracy across -40°C to +125°C ambient, using OUTS for precise pixel array regulation. Use Value: Thermal hysteresis (165°C/150°C) enables autonomous recovery from brief thermal overload during parking mode, avoiding camera blackout. |
| Body Control Module Core Rail | Telematics LTE Modem Supply |
|
Use Scenario: Generating 5.0V core rail for microcontrollers and CAN transceivers in door modules with strict ISO 16750-2 sleep current limits. IC Role / Device Role / Timing Role: Always-on LDO enabled via EN tied to battery; delivers 5.0V/500mA with <0.1µA shutdown current during vehicle sleep. Use Value: Pin-selectable 5.0V output (SELA=IN, SELB=IN) eliminates resistor network, reducing BOM count and layout complexity in high-volume modules. |
Use Scenario: Supplying 3.1V to LTE modem baseband processors requiring tight voltage tolerance and immunity to GSM burst noise. IC Role / Device Role / Timing Role: High-PSRR LDO (70dB @ 10kHz) filtering DC/DC ripple and cellular RF coupling; configured for 3.1V via SELA=GND/SELB=IN. Use Value: 100mV dropout at full load allows direct derivation from 3.3V domain, minimizing power loss and heat generation in compact telematics housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A8101DRBR | 400mA max output, 3.3µVRMS noise (10Hz–100kHz), no AEC-Q100 qualification, 5-pin VSON package. | Lacks automotive qualification and remote sensing (OUTS); suitable for non-safety-critical infotainment sub-systems only. | Select only for cost-sensitive consumer-grade designs where AEC-Q100 and 500mA capability are not required. |
| NCP163AMX330TBG | 300mA max output, 15µVRMS noise, AEC-Q100 Grade 1 (−40°C to +125°C), 5-pin SOT-23 package. | Lower current rating and no OUTS pin; limited to single-point regulation without trace-drop compensation. | Use when board space is constrained and 300mA suffices - but verify thermal margin at 125°C ambient with θJA = 210°C/W. |
Compared with TPS7A8101DRBR and NCP163AMX330TBG, the MAX25300AATA/V+T uniquely combines AEC-Q100 Grade 0 qualification, 500mA output, remote sensing (OUTS), and nine pin-selectable voltages - making it the only option for thermally demanding, safety-relevant automotive LDO applications requiring zero-resistor configuration.
Availability
MAX25300AATA/V+T is available at Aetrix Electronics and suitable for automotive electronics, audio systems, and high-resolution data acquisition systems requiring stable component supply with full AEC-Q100 compliance and long-term production continuity.
Supply support for MAX25300AATA/V+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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving automotive, industrial, communications, and healthcare markets.
The MAX25300AATA/V+T belongs to Analog Devices' automotive power management portfolio, engineered specifically for noise-sensitive, safety-critical vehicle subsystems including ADAS, infotainment, and body electronics.
FAQ
What output voltage does MAX25300AATA/V+T deliver?
The MAX25300AATA/V+T delivers one of nine factory-configurable output voltages - 1.2V, 1.5V, 1.8V, 2.5V, 3.0V, 3.1V, 3.3V, 4.0V, or 5.0V - selected by the logic states of SELA and SELB pins at power-up. For example, tying SELA to IN and leaving SELB floating configures the MAX25300AATA/V+T for 1.5V output. No external resistors are needed.
Does MAX25300AATA/V+T support remote voltage sensing?
Yes, the MAX25300AATA/V+T includes an OUTS (output sense) pin that enables remote sensing at the load. Connecting OUTS directly to the load's power input compensates for PCB trace resistance and ensures ±1% regulation accuracy under dynamic current conditions - a critical feature for precision analog circuits powered by the MAX25300AATA/V+T.
How is soft-start controlled on MAX25300AATA/V+T?
Soft-start on the MAX25300AATA/V+T is controlled by the capacitor connected between BYP and OUT. A 10nF capacitor sets the default slew rate to 5V/ms; adjusting CBYP from 0.001µF to 0.1µF scales the startup rate inversely (StartupSlewRate = 5V/ms × 0.01µF/CBYP). This prevents inrush current issues in automotive systems where the MAX25300AATA/V+T powers large output capacitances.
Is MAX25300AATA/V+T qualified for automotive use?
Yes, the MAX25300AATA/V+T is AEC-Q100 qualified Grade 0 (−40°C to +125°C ambient), with full testing for HTOL, ESD, and mechanical stress. It is explicitly designed for automotive applications including engine control, ADAS cameras, and infotainment systems - and the "/V+" suffix denotes its automotive qualification and RoHS compliance.
What protection features does MAX25300AATA/V+T include?
The MAX25300AATA/V+T integrates overcurrent limiting (700mA typ), thermal shutdown with hysteresis (trip at +165°C, resume at +150°C), reverse-current protection (activates when VIN drops 10mV below VOUT), and short-circuit protection. These features ensure robust operation in harsh automotive environments without requiring external protection circuitry - enhancing reliability of systems powered by the MAX25300AATA/V+T.
MAX25300AATA/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.3V
- Voltage Dropout (Max):
- 0.3V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 600 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB ~ 40dB (1kHz ~ 1MHz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Current
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
MAX25300AATA/V+T FAQ
1.How can I place an order for MAX25300AATA/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX25300AATA/V+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 MAX25300AATA/V+T reliable?
The price and inventory of MAX25300AATA/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX25300AATA/V+T is usually 5 days.
3.What payment methods are accepted for MAX25300AATA/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX25300AATA/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX25300AATA/V+T?
MAX25300AATA/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX25300AATA/V+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 MAX25300AATA/V+T?
For technical support, including MAX25300AATA/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX25300AATA/V+T requirements.
6.How does Aetrix verify that MAX25300AATA/V+T is sourced from the original manufacturer or authorized distributors?
All MAX25300AATA/V+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 MAX25300AATA/V+T meets industry standards.
7.What is the process for return or replacement of MAX25300AATA/V+T?
All MAX25300AATA/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX25300AATA/V+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 MAX25300AATA/V+T part is unused and in its original packaging.
Return procedure for MAX25300AATA/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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