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Analog Devices Inc./Maxim Integrated MAX38913AATD+
- Part No.:
- MAX38913AATD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
MAX38913AATD+.pdf
- Description:
- IC REG 1A DUAL
- Quantity:
- Payment:
- Shipping:
Inventory:490
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Product details
Overview
MAX38913AATD+ from Analog Devices is a 4µVRMS ultra-low-noise, 1A low-dropout linear regulator with dynamic two-level output voltage selection and integrated pass-through mode. It delivers ±1% output accuracy over -40°C to +125°C, supports 1.8V–5.5V input and 0.6V–5.0V output ranges, and features 6Ω active discharge for fast output capacitor discharge-ideal for image sensor power sequencing in high-resolution camera modules.
For engineers reviewing the MAX38913AATD+ datasheet, MAX38913AATD+ pinout, MAX38913AATD+ application, or MAX38913AATD+ equivalent, key selection considerations include its dual-mode regulation (MODE1/MODE2), 4µVRMS noise performance (10Hz–100kHz), 75dB PSRR at 10kHz, pass-through mode quiescent current of 115µA, and TDFN-14 package with POK/PORB status outputs.
Technical Context
The MAX38913AATD+ implements a precision bandgap reference with adaptive feedback loop compensation, enabling stable regulation across 4µF–300µF output capacitance. Its dual RSEL-based voltage selection (MODE1/MODE2) uses internal resistor ladder decoding with ±1% RSEL detection accuracy, and slew rate control is governed by external BYP capacitor (10nF–100nF) sourcing 50µA bias current.
Operating modes-regulation (MODE1/MODE2), pass-through (IN→OUT short), and shutdown (6Ω active discharge)-are controlled exclusively by EN2/EN1 logic states. In pass-through mode, the device maintains 2A current limit and thermal shutdown at +165°C, while retaining open-drain POK and PORB outputs for system-level power sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Noise | 4µVRMS (10Hz–100kHz); enables clean analog supply for CMOS image sensors without added filtering |
| Load Current | 1A max continuous; supports high-current pixel arrays and analog front-ends in portable imaging systems |
| Dropout Voltage | 28mV at 1A, VIN=5.0V; minimizes power loss in battery-powered applications with tight VIN–VOUT margins |
| PSRR | 75dB at 10kHz; suppresses switching noise from upstream DC-DC converters feeding the LDO input |
| Accuracy | ±1% over line/load/temperature; ensures consistent sensor biasing and ADC reference stability |
| Active Discharge | 6Ω resistance; discharges 10µF output cap in <100µs, meeting fast-power-down requirements in SD card interfaces |
| Operating Temp | -40°C to +125°C junction; qualified for automotive ADAS camera modules and industrial embedded vision |
Pinout & Package
MAX38913AATD+ is packaged in a 3mm × 3mm, 14-pin TDFN with exposed thermal pad (Package Code: T1433+2C). This full-featured variant includes dedicated POK and PORB pins not present in the WLP version.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pins 1,14) | Input supply connection | Dual IN pins reduce trace inductance and improve high-frequency PSRR; requires ≥4µF ceramic cap with ESR <0.03Ω |
| OUT (Pins 2,13) | Regulated output node | Delivers up to 1A; connects to load and 10µF output capacitor; dual pins lower current density and thermal stress |
| GND (Pin 3) | Power ground reference | Common return for IN/OUT bypass caps; ties to exposed pad for optimal thermal conduction |
| OUTS (Pin 12) | Output voltage sense input | Enables remote sensing for improved load regulation; connects directly to critical load point to cancel PCB IR drop |
| BYP (Pin 4) | Bypass capacitor node | Sets output slew rate via 10nF–100nF cap; 50µA internal current source defines dV/dt = 50µA/CBYP |
| POK (Pin 5) | Power-OK open-drain output | Signals regulation achievement (91% VOUT) with 10kΩ–200kΩ pull-up; used for downstream power sequencing |
| PORB (Pin 6) | Power-on-reset open-drain output | Holds system reset for ≥10ms after regulation; complements POK for reliable boot in SD memory card controllers |
| EN1 (Pin 11), EN2 (Pin 10) | Mode-select enable inputs | Logic-controlled state machine: [00]=shutdown, [01]=MODE1, [11]=MODE2, [10]=pass-through; 2µs minimum stable time required |
| RSEL1 (Pin 9), RSEL2 (Pin 8) | Voltage select resistor inputs | Configure MODE1/MODE2 output voltages via ±1% resistors to GND; unused in MAX38914 but functional in MAX38913AATD+ |
Key Features
| Feature | Design Value |
|---|---|
| Two-level dynamic voltage scaling | Independent MODE1/MODE2 regulation with 33 programmable output settings per mode (via RSEL1/RSEL2) |
| Pass-through mode | IN-to-OUT direct connection with 60mΩ typical RON, reducing quiescent current to 115µA while maintaining 2A current limit |
| Ultra-low noise architecture | 4µVRMS output noise achieved via low-noise reference, optimized feedback path, and BYP-filtered error amplifier |
| Fast active discharge | 6Ω on-chip discharge path pulls OUT to GND in shutdown, enabling rapid power-down for SD card hot-swap compliance |
| Integrated sequencing support | Open-drain POK and PORB outputs with 10ms PORB delay provide deterministic power-up coordination for multi-rail systems |
Applications
| Image Sensor Power | Portable SD Card Interface |
|---|---|
Use Scenario: High-resolution CMOS image sensor requiring separate 1.8V and 3.3V rails with fast voltage transitions during exposure mode changes. IC Role / Device Role / Timing Role: Dual-voltage LDO providing dynamically switched analog and I/O supplies with sub-100µs slew control via BYP capacitor. Use Value: 4µVRMS noise prevents fixed-pattern noise in raw image data; ±1% accuracy maintains consistent pixel response across temperature. |
Use Scenario: Embedded SD memory card slot needing regulated 3.3V supply with controlled ramp-up and fast discharge during card removal. IC Role / Device Role / Timing Role: Primary power regulator with POK/PORB outputs coordinating host controller reset and card initialization sequence. Use Value: 10ms PORB hold time ensures SD controller completes initialization before release; 6Ω discharge meets SD Association hot-swap timing specs. |
| Low-Power Industrial Sensor Node | Automotive Camera Module |
Use Scenario: Battery-powered environmental sensor node alternating between low-power sleep (2.0V) and active measurement (3.3V). IC Role / Device Role / Timing Role: Energy-efficient LDO enabling voltage scaling to minimize system power; pass-through mode used during MCU deep-sleep. Use Value: 115µA pass-through quiescent current extends battery life; 28mV dropout at 1A preserves headroom in 3.6V Li-ion systems. |
Use Scenario: AEC-Q100-compliant rear-view camera module operating in under-hood environments (-40°C to +125°C). IC Role / Device Role / Timing Role: Primary analog rail regulator for image signal processor and sensor interface, with thermal shutdown at +165°C. Use Value: Full -40°C to +125°C operation with ±1% accuracy ensures consistent color reproduction; 75dB PSRR rejects engine EMI noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, dual-voltage LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX38914AATD+ | Factory pre-programmed 2.0V/2.3V outputs; RSEL1/RSEL2 pins disabled and must float | No external resistor network needed; fixed dual-voltage configuration only | Select when application requires guaranteed 2.0V/2.3V pair without programmability |
| TPL7407LADGQR | 7-channel 200mA N-channel array; no pass-through mode, no POK/PORB, higher 15µVRMS noise | Designed for GPIO/peripheral driving, not precision analog supply | Use only for digital I/O translation where noise and sequencing are non-critical |
Compared with MAX38913AATD+, MAX38914AATD+ eliminates RSEL design complexity but sacrifices voltage flexibility, while TPL7407LADGQR lacks critical analog features-making MAX38913AATD+ the sole choice for noise-sensitive, dynamically scaled imaging power rails.
Availability
MAX38913AATD+ is available at Aetrix Electronics and suitable for image sensor power management, portable SD memory card interfaces, low-power industrial sensor nodes, and automotive camera modules requiring stable component supply with full lifecycle support.
Supply support for MAX38913AATD+ 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.
The MAX38913AATD+ belongs to Analog Devices' ultra-low-noise LDO family designed specifically for powering noise-sensitive analog circuits-including CMOS image sensors, high-speed ADCs, and RF front-ends-in space-constrained, thermally demanding applications.
FAQ
What is the maximum output capacitance supported by MAX38913AATD+?
MAX38913AATD+ has no upper limit on output capacitance for stability-it is characterized and guaranteed stable with 4µF to 300µF ceramic capacitors. Larger values (e.g., 100µF) are acceptable and enhance transient response, provided the effective capacitance remains ≥4µF at operating DC bias and temperature. The 6Ω active discharge circuit safely handles full discharge of up to 300µF.
How does the BYP pin control output slew rate in MAX38913AATD+?
The BYP pin in MAX38913AATD+ sources a precise 50µA current into an external capacitor (10nF–100nF) connected between BYP and OUT. This sets the output voltage slew rate as dV/dt = 50µA / CBYP. For example, a 47nF capacitor yields ~1.06V/ms slew rate-critical for controlling inrush current during startup or voltage transitions between MODE1 and MODE2.
Does MAX38913AATD+ support remote sensing, and how is it implemented?
Yes, MAX38913AATD+ supports remote sensing via the OUTS pin (Pin 12). Connecting OUTS directly to the load's power input point compensates for PCB trace resistance, ensuring ±1% regulation accuracy at the load rather than at the IC's OUT pin. This is essential for high-current or long-trace applications like image sensor arrays where IR drop would otherwise degrade voltage accuracy.
What protection features are integrated into MAX38913AATD+?
MAX38913AATD+ integrates overcurrent limiting (1.4A typ), thermal shutdown (+165°C trip, +150°C recovery), reverse-current protection (via UVLO-triggered body diode disable), and undervoltage lockout (1.75V rising threshold). During overload, it cycles between regulation and shutdown to prevent damage-enabling robust operation in unregulated input environments such as automotive battery rails.
Can MAX38913AATD+ be used in place of MAX38914AATD+?
MAX38913AATD+ is not a drop-in replacement for MAX38914AATD+ because it requires external RSEL1/RSEL2 resistors to set output voltages, whereas MAX38914AATD+ has factory-programmed 2.0V/2.3V outputs and expects RSEL pins to float. Using MAX38913AATD+ in a MAX38914AATD+ design risks incorrect voltage programming unless resistor networks are added-and vice versa risks floating RSEL-induced instability.
MAX38913AATD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-WFDFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 1.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- -
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 2 mA
- Current - Supply (Max):
- -
- PSRR:
- 75dB ~ 50dB (1kHz ~ 1MHz)
- Control Features:
- Current Limit, Enable, Soft Start
- Protection Features:
- Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TDFN (3x3)
MAX38913AATD+ FAQ
1.How can I place an order for MAX38913AATD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX38913AATD+ 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 MAX38913AATD+ reliable?
The price and inventory of MAX38913AATD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX38913AATD+ is usually 5 days.
3.What payment methods are accepted for MAX38913AATD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX38913AATD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX38913AATD+?
MAX38913AATD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX38913AATD+ 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 MAX38913AATD+?
For technical support, including MAX38913AATD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX38913AATD+ requirements.
6.How does Aetrix verify that MAX38913AATD+ is sourced from the original manufacturer or authorized distributors?
All MAX38913AATD+ 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 MAX38913AATD+ meets industry standards.
7.What is the process for return or replacement of MAX38913AATD+?
All MAX38913AATD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX38913AATD+, 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 MAX38913AATD+ part is unused and in its original packaging.
Return procedure for MAX38913AATD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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