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Analog Devices Inc./Maxim Integrated MAX17626ATA+T
- Part No.:
- MAX17626ATA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
MAX17626ATA+T.pdf
- Description:
- IC REG BUCK ADJ 700MA 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,313
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Product details
Overview
MAX17626ATA+T from Analog Devices is a synchronous step-down DC-DC converter with integrated high-side pMOS and low-side nMOS FETs, operating from 2.7V to 5.5V input and delivering up to 700mA output current at adjustable 1.5V–3.3V output. It features fixed 4MHz switching frequency, ±1% feedback voltage accuracy (0.8V reference), and 100% duty-cycle capability for extended battery runtime. Used in compact industrial power rails requiring high efficiency and minimal thermal dissipation.
For engineers reviewing the MAX17626ATA+T datasheet, MAX17626ATA+T pinout, MAX17626ATA+T application, or MAX17626ATA+T equivalent, this page delivers verified electrical parameters, validated thermal performance (θJA = 85.3°C/W), confirmed MODE/PGOOD/FB functional behavior, and real-world design constraints including prebias startup support and Kelvin-sense OUTSNS implementation.
Technical Context
The MAX17626ATA+T employs peak-current-mode control with internal slope compensation and fixed 4MHz oscillator, enabling stable regulation with ceramic output capacitors as low as 10µF. Its controller latches MODE pin state at power-up to select forced-PWM (MODE = GND) or PFM (MODE floating), with distinct light-load efficiency trade-offs and negative-current handling only in PWM mode.
It integrates robust protection: cycle-by-cycle overcurrent detection (peak limit 1.46A typ, valley limit 1.14A typ), thermal shutdown at +165°C (10°C hysteresis), and input UVLO (2.6V typ, 200mV hysteresis). The device supports startup into prebiased outputs and maintains regulation down to 100% duty cycle, critical for Li-ion and multi-rail embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion, USB, and industrial 3.3V/5V rails without external LDO pre-regulation. |
| Output Voltage Range | 1.5V to 3.3V - programmable via external resistor divider; MAX17626 variant specifically covers this range (not 0.8–1.5V). |
| Switching Frequency | Fixed 4MHz - enables use of 1µH inductors and ultra-compact 0603/0805 ceramic capacitors, reducing solution footprint. |
| Max Output Current | 700mA - sustained load capability with thermal derating per θJA = 85.3°C/W on 4-layer board. |
| Feedback Accuracy | ±1% at 0.8V reference - ensures tight output regulation across -40°C to +125°C ambient, critical for FPGA core and MCU I/O rails. |
| Shutdown Current | 0.1µA typical - minimizes battery drain in always-on sensor nodes and portable equipment standby modes. |
| Operating Temperature | -40°C to +125°C ambient - qualified for factory automation, automotive body electronics, and industrial edge controllers. |
Pinout & Package
Package: 8-pin TDFN (2mm × 2mm, 0.5mm pitch), exposed pad (EP) for thermal management. RoHS-compliant, tape-and-reel (T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power input supply | Accepts 2.7V–5.5V; requires local 2.2µF ceramic decoupling to GND for EMI suppression and transient response. |
| 2 GND | Power ground reference | Primary return path; must connect to large copper plane with multiple vias to EP for optimal thermal and noise performance. |
| 3 EN | Enable control input | Logic-high (>2V) enables regulation; logic-low (<0.8V) disables converter and reduces quiescent current to 0.1µA. |
| 4 MODE | Operation mode selection | Ground = forced-PWM (fixed 4MHz, supports negative current); floating = PFM (pulse-skipping, higher light-load efficiency). |
| 5 PGOOD | Open-drain power-good status | Asserts high when VOUT > 93.5% of target; deasserts low when VOUT < 90%; requires external pullup for system sequencing. |
| 6 FB | Feedback voltage sense | Monitors resistor-divider output; regulates to 0.8V internal reference; ±1% accuracy enables precise 1.5–3.3V output setting. |
| 7 OUTSNS | Kelvin output voltage sense | Connects directly to COUT+ via dedicated trace to reject PCB IR drop; essential for accurate regulation under high-current transients. |
| 8 LX | Switching node | Drives external 1µH inductor; high dv/dt node requiring short, low-inductance routing to minimize EMI and switching losses. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MOSFETs | High-side pMOS (100mΩ typ @ 5V) + low-side nMOS (70mΩ typ @ 5V) eliminate external FETs and gate drivers, reducing BOM count and layout complexity. |
| Internal Compensation | Fixed-frequency peak-current-mode loop with built-in compensation eliminates external Type-II/III networks, enabling stable operation with 10µF ceramic output capacitor. |
| Prebias Startup | Soft-starts into existing output voltage without discharging COUT - prevents bus collapse in multi-rail systems powering FPGAs or SoCs with staggered power-up sequences. |
| 100% Duty-Cycle Operation | Maintains regulation even when VIN ≈ VOUT (e.g., 3.3V out from 3.6V Li-ion); extends usable battery capacity by avoiding dropout-related shutdown. |
| All-Ceramic Design | Supports full 2.2µF input and 10µF output X7R ceramics - eliminates electrolytics, improves lifetime reliability, and reduces solution height in space-constrained modules. |
Applications
| Factory Automation Sensors | Portable Medical Monitors |
|---|---|
Use Scenario: Compact PLC I/O modules and distributed temperature/pressure sensors deployed in enclosed cabinets with limited airflow. IC Role / Device Role / Timing Role: Point-of-load regulator converting 5V backplane to 3.3V for microcontroller, ADC, and isolated RS-485 transceivers. Use Value: 4MHz switching + 1µH inductor + 10µF ceramic output yields <25mm² total solution size; 85.3°C/W θJA enables operation at +70°C ambient without heatsink. |
Use Scenario: Battery-powered handheld ECG or pulse oximeter requiring long runtime and zero audible noise during patient monitoring. IC Role / Device Role / Timing Role: Primary 3.3V rail generator from single-cell Li-ion (3.0–4.2V), supporting low-noise analog front-end and BLE radio. Use Value: PFM mode provides >85% efficiency at 10mA load; 0.1µA shutdown current extends shelf life; prebias startup avoids reset glitches during hot-swap battery replacement. |
| Industrial Edge AI Cameras | Smart Building Controllers |
Use Scenario: Embedded vision modules with FPGA-based image processing and MIPI CSI-2 interface, mounted in thermally isolated enclosures. IC Role / Device Role / Timing Role: Core 1.8V supply for FPGA fabric and 1.2V for DDR interface, derived from 5V PoE input. Use Value: 100% duty cycle sustains 1.8V output down to 2.1V input; thermal shutdown at +165°C protects against enclosure overheating; OUTSNS Kelvin sensing ensures <±1.5% output error under 500mA step load. |
Use Scenario: DIN-rail mounted HVAC controllers with multiple isolated 3.3V/5V rails powering MCU, CAN transceiver, and relay drivers. IC Role / Device Role / Timing Role: Secondary 3.3V regulator fed from 5V auxiliary supply, powering low-power wireless SoC and real-time clock. Use Value: -40°C to +125°C rating ensures reliability in unconditioned mechanical rooms; PGOOD enables safe firmware update sequencing; MODE pin allows field-selectable noise vs. efficiency trade-off. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6286418RTER | 3.0–5.5V input, 1.8V fixed output, 600mA, 4MHz, no OUTSNS or prebias startup. | Lacks Kelvin sensing and prebias capability; suitable only for non-critical digital rails where output accuracy <±2% is acceptable. | Select if fixed 1.8V output suffices and board space permits larger inductor (requires 2.2µH); avoid for precision analog or multi-rail sequencing. |
| MP2152GQZ-P | 2.5–5.5V input, adjustable 0.6–5.5V output, 600mA, 2.2MHz, no PGOOD or thermal shutdown. | Missing PGOOD signaling and thermal protection; requires external compensation components and larger output capacitance (≥22µF). | Choose for cost-sensitive consumer applications with relaxed safety requirements; not recommended for industrial or medical designs requiring fault reporting. |
Compared with TPS6286418RTER and MP2152GQZ-P, the MAX17626ATA+T uniquely combines 4MHz operation, Kelvin-sense OUTSNS, prebias startup, and full thermal/current protection in a 2mm × 2mm package-enabling smaller, safer, and more reliable point-of-load designs in harsh environments.
Availability
MAX17626ATA+T is available at Aetrix Electronics and suitable for factory automation sensors, portable medical monitors, industrial edge AI cameras, and smart building controllers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX17626ATA+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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX17626ATA+T belongs to Analog Devices' high-frequency, integrated power management IC portfolio, designed specifically for space-constrained, thermally demanding embedded systems requiring robust, low-noise, and highly efficient DC-DC conversion.
FAQ
What is the maximum output current capability of the MAX17626ATA+T under continuous operation?
The MAX17626ATA+T delivers up to 700mA output current continuously across its full operating temperature range (-40°C to +125°C ambient), provided thermal design meets θJA ≤ 85.3°C/W on a 4-layer PCB with proper EP grounding. Derating applies above +70°C ambient per the 11.7mW/°C specification.
Does the MAX17626ATA+T support startup into a prebiased output voltage?
Yes, the MAX17626ATA+T supports soft-start into a prebiased output without discharging the output capacitor in both PFM and forced-PWM modes. This feature is explicitly documented in the datasheet's Detailed Description section and is critical for multi-rail systems where downstream devices may retain residual voltage during power sequencing.
How does the MODE pin affect the MAX17626ATA+T's efficiency and noise profile?
When MODE is grounded, the MAX17626ATA+T operates in forced-PWM mode (fixed 4MHz), delivering consistent switching frequency and supporting negative inductor current-but with lower light-load efficiency. When MODE is left floating, it enters PFM mode, skipping pulses at light loads to achieve >85% efficiency at 10mA while increasing output voltage ripple and introducing variable-frequency noise.
What is the purpose of the OUTSNS pin on the MAX17626ATA+T, and how must it be connected?
The OUTSNS pin on the MAX17626ATA+T provides Kelvin sensing of the output voltage at the load side of the output capacitor. It must be connected directly to the positive terminal of COUT using a dedicated trace-separate from the main power trace-to reject PCB resistance-induced voltage drop and ensure ±1% regulation accuracy under dynamic load conditions.
Can the MAX17626ATA+T operate with 100% duty cycle, and what design benefit does this provide?
Yes, the MAX17626ATA+T supports true 100% duty cycle operation, allowing it to maintain regulated output voltage even when input voltage drops to within ~200mV of the output (e.g., 3.3V out from 3.5V input). This maximizes usable energy from Li-ion batteries and eliminates dropout-related system resets in battery-powered edge devices.
MAX17626ATA+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
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 3.3V
- Current - Output:
- 700mA
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
MAX17626ATA+T FAQ
1.How can I place an order for MAX17626ATA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17626ATA+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 MAX17626ATA+T reliable?
The price and inventory of MAX17626ATA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17626ATA+T is usually 5 days.
3.What payment methods are accepted for MAX17626ATA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17626ATA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17626ATA+T?
MAX17626ATA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17626ATA+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 MAX17626ATA+T?
For technical support, including MAX17626ATA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17626ATA+T requirements.
6.How does Aetrix verify that MAX17626ATA+T is sourced from the original manufacturer or authorized distributors?
All MAX17626ATA+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 MAX17626ATA+T meets industry standards.
7.What is the process for return or replacement of MAX17626ATA+T?
All MAX17626ATA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17626ATA+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 MAX17626ATA+T part is unused and in its original packaging.
Return procedure for MAX17626ATA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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