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Analog Devices Inc./Maxim Integrated MAX15058EWL+T
- Part No.:
- MAX15058EWL+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 9-WFBGA, WLBGA
- Datasheet:
-
MAX15058EWL+T.pdf
- Description:
- IC REG BUCK ADJ 3A 9WLP
- Quantity:
- Payment:
- Shipping:
Inventory:19,408
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Product details
Overview
The MAX15058EWL+T from Maxim Integrated is a high-efficiency, current-mode, synchronous step-down switching regulator with integrated 30mΩ (high-side) and 18mΩ (low-side) MOSFETs, delivering up to 3A output current from a 2.7V–5.5V input. It features factory-trimmed 1MHz PWM operation, 0.6V–0.94×VIN adjustable output, and PGOOD open-drain signaling - ideal for point-of-load regulation in notebook power, IP phones, and distributed server power systems.
For engineers reviewing the MAX15058EWL+T datasheet, MAX15058EWL+T pinout, MAX15058EWL+T application, or MAX15058EWL+T equivalent, this page delivers verified technical context on current-mode control architecture, skip-mode efficiency optimization at light load, soft-start programmability via external capacitor, thermal shutdown at 150°C, and safe startup into prebiased outputs - all critical for embedded power design validation.
Technical Context
The MAX15058EWL+T implements peak current-mode control using a 1.5mS transconductance error amplifier and slope-compensated PWM comparator, enabling stable loop compensation and cycle-by-cycle overcurrent protection. Its fixed 1MHz ±15% oscillator ensures predictable timing for ceramic-capacitor-based designs.
Control logic enforces break-before-make switching, 94% maximum duty cycle, and hiccup-mode fault recovery after eight consecutive current-limit events. Prebias startup is supported via SS/REFIN voltage threshold detection (0.58V typ), with reduced low-side sink current limit (-0.4A for first 32 cycles) to prevent reverse discharge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion, USB-powered, and 3.3V/5V rail inputs without external LDO preregulation. |
| Output Current | Continuous 3A - rated across -40°C to +85°C ambient, enabling compact DC-DC solutions for high-current SoC cores. |
| Switching Frequency | 1MHz ±15% - allows use of small, low-ESR ceramic capacitors and sub-2mm inductors for space-constrained layouts. |
| Output Voltage Accuracy | ±1% over line, load, and temperature - ensures stable core voltage for processors and FPGAs without external trimming. |
| RDS(ON) (HS/LG) | 30mΩ / 18mΩ (typ) - minimizes conduction loss and thermal rise at full load, reducing need for heatsinking. |
| Soft-Start Control | Capacitor-programmable via SS/REFIN pin - eliminates inrush current stress on input source and enables controlled power sequencing. |
| Power-Good Threshold | 555mV rising / 527mV falling - provides precise enable/disable signaling for downstream logic and multi-rail sequencing. |
Pinout & Package
The MAX15058EWL+T is housed in a 9-bump, 1.5mm × 1.5mm WLP (Wafer-Level Package) with 0.5mm pitch, optimized for ultra-compact PCB footprints and thermal performance on multilayer boards (θJA = 71°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 GND | Analog ground / low-side switch source | Single-point connection to PCB copper plane near input bypass cap return - critical for noise immunity and current-sense accuracy. |
| A2 LX | Inductor switch node | High-impedance during shutdown; connects directly to inductor; internal clamp diodes limit voltage to GND and IN rails. |
| A3 IN | Main input power supply | 2.7V–5.5V input with ≥10µF ceramic bypass - UVLO triggers at 2.7V rising with 200mV hysteresis. |
| B1 COMP | Error amplifier output | Drives external RC compensation network; clamped low at 0.94V to accelerate transient recovery. |
| B2 SKIP | Skip-mode enable control | Tied to EN to activate light-load efficiency mode; otherwise left floating for forced PWM operation. |
| B3 EN | Digital enable input | Logic-high (>1.45V) enables regulation; connect to IN for always-on operation; leakage <0.025µA. |
| C1 FB | Feedback voltage sense | Monitors resistor-divider output; 600mV setpoint with ±6mV tolerance over temp/load - sets VOUT = 0.6V × (1 + R1/R2). |
| C2 SS/REFIN | Soft-start timing / external reference | Capacitor-to-GND sets ramp time; accepts 0V to (VIN − 1.8V) reference for precision tracking applications. |
| C3 PGOOD | Open-drain power-good flag | Pulls low when FB < 527mV; drives interrupt or sequencer; VOL = 60mV @ 5mA sink current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Switches | 30mΩ HS / 18mΩ LS MOSFETs eliminate discrete FETs and gate drivers - reduces BOM count and layout complexity. |
| Current-Mode Architecture | Enables fast load-transient response (<100µs settling) and inherent cycle-by-cycle current limiting - no external current-sense resistor required. |
| Programmable Skip Mode | Reduces light-load quiescent current and improves efficiency below ~300mA - extends battery life in portable devices without sacrificing heavy-load performance. |
| Safe Prebias Startup | Starts into existing output voltage without discharging capacitor - prevents system brownout during hot-swap or multi-rail sequencing. |
| Thermal & Overcurrent Protection | Hiccup mode activates after 8 consecutive current-limit events; thermal shutdown at 150°C with 20°C hysteresis - ensures robust field reliability. |
Applications
| Server Point-of-Load Regulation | Notebook Core Voltage Supply |
|---|---|
Use Scenario: Regulating 1.2V/1.8V CPU/GPU core rails from 3.3V or 5V intermediate bus in 1U servers. IC Role / Device Role / Timing Role: Primary synchronous buck controller delivering 3A continuous current with tight output voltage regulation and sequencing via PGOOD. Use Value: 95% efficiency at 3A/1.8V reduces thermal load on dense motherboard layouts and eliminates need for heatsinks or airflow augmentation. |
Use Scenario: Powering SoC and memory subsystems in ultrabooks with strict size and thermal constraints. IC Role / Device Role / Timing Role: Compact, high-frequency buck converter operating in skip mode during sleep states to minimize standby power draw. Use Value: 1.5mm × 1.5mm WLP footprint saves board area versus QFN alternatives; soft-start prevents inrush-induced system reset during wake-from-sleep. |
| IP Phone Power Management | Distributed Preregulation |
Use Scenario: Generating isolated 3.3V/5V rails from PoE (48V) or wall adapter (12V) inputs in VoIP endpoints. IC Role / Device Role / Timing Role: Preregulator stepping down to intermediate voltage before LDO post-regulation for analog codec and Ethernet PHY. Use Value: High efficiency across wide input range (2.7V–5.5V) maintains stable output under varying PoE class loads; PGOOD enables clean power-up sequencing. |
Use Scenario: Providing stable 1.8V/2.5V bias rails for ADCs, sensors, and interface ICs in industrial PLCs and test equipment. IC Role / Device Role / Timing Role: Low-noise, high-PSRR point-of-load regulator with external reference input (SS/REFIN) for precision voltage tracking. Use Value: ±1% output accuracy and 1MHz switching minimize output ripple and EMI - critical for high-resolution data acquisition systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54332DDAR | 3.5A rating, 3.5V–28V input, adjustable 0.8V–24V output; larger SO-8 package; no prebias startup support. | Better suited for higher-input-voltage industrial supplies; lacks safe prebias capability and WLP footprint. | Select when input exceeds 5.5V or >3.5A output is needed; avoid if board space or hot-swap startup is critical. |
| RT7295BGJ8F | 3A rating, 4.5V–18V input, 0.6V–5.5V output; 2mm × 2mm DFN; 600kHz switching; no skip mode. | Lower frequency increases inductor size; no light-load efficiency optimization; lacks PGOOD hysteresis spec. | Choose for cost-sensitive, non-battery applications where 1MHz switching and skip mode are not required. |
Compared with TPS54332DDAR and RT7295BGJ8F, the MAX15058EWL+T uniquely combines ultra-compact WLP packaging, 1MHz operation for ceramic-only designs, skip-mode efficiency, and guaranteed safe prebias startup - making it optimal for space-constrained, battery-aware, and multi-rail sequenced systems.
Availability
The MAX15058EWL+T is available at Aetrix Electronics and suitable for notebook power, IP phone power management, and server point-of-load regulation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX15058EWL+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) designs high-performance analog and mixed-signal ICs for power, sensing, and communication applications - emphasizing integration, efficiency, and reliability in harsh environments.
The MAX15058EWL+T belongs to Maxim's high-density DC-DC regulator product line, engineered specifically for space-constrained, high-efficiency point-of-load conversion in portable, telecom, and computing systems.
FAQ
What is the maximum continuous output current of the MAX15058EWL+T?
The MAX15058EWL+T delivers continuous 3A output current across the full operating temperature range of -40°C to +85°C. This rating is validated with proper PCB thermal design (four-layer board, θJA = 71°C/W) and accounts for internal MOSFET RDS(ON) (30mΩ HS / 18mΩ LS) and thermal shutdown at 150°C. Derating applies above +70°C ambient per the 14.1mW/°C specification.
Does the MAX15058EWL+T support startup into a prebiased output?
Yes, the MAX15058EWL+T supports safe startup into a prebiased output without discharging the output capacitor. It uses SS/REFIN voltage detection (0.58V threshold) and reduced low-side sink current limit (-0.4A for first 32 clock cycles) to prevent reverse current flow. This feature is confirmed in the datasheet's "Starting into a Prebiased Output" section and typical waveforms (Figures toc19–toc21).
What package type and dimensions does the MAX15058EWL+T use?
The MAX15058EWL+T uses a 9-bump Wafer-Level Package (WLP) measuring 1.5mm × 1.5mm with 0.5mm pitch. The package code is W91E1Z+1, and land pattern guidance is provided in Maxim Application Note 1891. This ultra-compact footprint enables first-pass success in high-density portable and networking designs.
How is output voltage programmed on the MAX15058EWL+T?
Output voltage is programmed using an external resistor divider from VOUT to GND, with the FB pin connected to the center tap. The device regulates to 600mV at FB, so VOUT = 0.6V × (1 + R1/R2). Typical R2 = 10kΩ; R1 is calculated accordingly. For 0.6V output in skip mode, FB is shorted to VOUT while R2 remains grounded.
What protection features are built into the MAX15058EWL+T?
The MAX15058EWL+T integrates cycle-by-cycle overcurrent protection (5A HS limit), hiccup-mode fault recovery (after 8 current-limit events), thermal shutdown at 150°C with 20°C hysteresis, input undervoltage lockout (2.7V rising), and PGOOD monitoring with 28mV hysteresis. All protections are fully specified in the Absolute Maximum Ratings and Electrical Characteristics tables.
MAX15058EWL+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 9-WFBGA, WLBGA
- 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):
- 0.6V
- Voltage - Output (Max):
- 5.17V
- Current - Output:
- 3A
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-WLP (1.5x1.5)
MAX15058EWL+T FAQ
1.How can I place an order for MAX15058EWL+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX15058EWL+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 MAX15058EWL+T reliable?
The price and inventory of MAX15058EWL+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX15058EWL+T is usually 5 days.
3.What payment methods are accepted for MAX15058EWL+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX15058EWL+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX15058EWL+T?
MAX15058EWL+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX15058EWL+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 MAX15058EWL+T?
For technical support, including MAX15058EWL+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX15058EWL+T requirements.
6.How does Aetrix verify that MAX15058EWL+T is sourced from the original manufacturer or authorized distributors?
All MAX15058EWL+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 MAX15058EWL+T meets industry standards.
7.What is the process for return or replacement of MAX15058EWL+T?
All MAX15058EWL+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX15058EWL+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 MAX15058EWL+T part is unused and in its original packaging.
Return procedure for MAX15058EWL+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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