My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX15039ETG+T
- Part No.:
- MAX15039ETG+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 24-WFQFN Exposed Pad
- Datasheet:
-
MAX15039ETG+T.pdf
- Description:
- IC REG BUCK ADJ 6A 24TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX15039ETG+T from Maxim Integrated is a 6A, voltage-mode synchronous step-down DC-DC regulator with integrated 26mΩ high-side and 20mΩ low-side nMOSFETs, operating from 2.9V to 5.5V input and delivering adjustable output from 0.6V to 90% of VIN with ±1% accuracy over load, line, and temperature. It supports 500kHz–2MHz resistor-programmable switching frequency and features monotonic startup into prebiased outputs-ideal for powering ASIC/CPU I/O rails in telecom and server POL applications.
For engineers reviewing the MAX15039ETG+T datasheet, MAX15039ETG+T pinout, MAX15039ETG+T application, or MAX15039ETG+T equivalent, key selection criteria include its 24-pin 4mm × 4mm thin QFN package, nine-pin-programmable output voltages (0.6V–2.5V), 28MHz error-amplifier bandwidth, forced-PWM/skip-mode light-load control, and open-drain PWRGD with 92.5% VREFIN threshold.
Technical Context
The MAX15039ETG+T employs voltage-mode control with a 28MHz error amplifier and type III compensation support, enabling loop bandwidth up to 20% of switching frequency for fast transient response. Its internal 26mΩ/20mΩ MOSFET pair minimizes conduction loss and simplifies layout versus discrete solutions.
It integrates a 3.3V LDO (VDD) with 2.8V UVLO, programmable soft-start via external SS capacitor, and hiccup-mode overcurrent protection triggered at 70% VREFIN for ≥12μs. MODE pin selects between regular PWM, monotonic startup, or skip mode with monotonic behavior-critical for reliable power sequencing into prebiased rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | Continuous 6A over -40°C to +85°C - supports high-density POL loads without external current sharing. |
| Input Voltage Range | 2.9V to 5.5V - compatible with 3.3V and 5V intermediate bus architectures. |
| Output Voltage Range | 0.6V to 90% of VIN - enables precise core/I/O rail generation including DDR termination tracking. |
| Output Accuracy | ±1% over load, line, and temperature - eliminates need for precision external resistors in feedback network. |
| Switching Frequency | 500kHz to 2MHz (resistor-programmable) - allows all-ceramic capacitor designs and compact magnetics. |
| Error Amplifier BW | 28MHz - enables high loop bandwidth (up to 400kHz at 2MHz fSW) for <100µs load transient recovery. |
| RDS(ON) | 26mΩ (HS), 20mΩ (LS) - delivers >90% efficiency at 6A/1.8V out with 5V in, reducing thermal design burden. |
Pinout & Package
MAX15039ETG+T is housed in a lead-free, RoHS-compliant 4mm × 4mm, 24-pin thin QFN package with exposed pad (EP) for thermal enhancement. The EP must be soldered to a large PGND-connected copper plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 MODE | Functional mode select | Configures PWM, monotonic startup, or skip mode - critical for safe start into prebiased outputs. |
| 2 VDD | 3.3V LDO output | Powers internal analog circuitry; requires ≥2.2µF ceramic bypass to GND near pin. |
| 3,4 CTL1/CTL2 | Preset voltage selection | Three-state inputs (GND/VDD/open) set one of nine factory-trimmed outputs (0.6V–2.5V) without external resistors. |
| 5 REFIN | External reference input | Overrides internal 0.6V reference; enables tracking regulation (e.g., DDR VTT) when tied to system reference. |
| 6 SS | Soft-start timing | 8µA current source charges external capacitor - sets controlled ramp time to limit input inrush current. |
| 7 GND | Analog ground | Must be connected to PGND at single point near input capacitor return to minimize noise coupling. |
| 8 COMP | Error amplifier output | Connects to FB/OUT via type III compensation network - determines stability and transient response. |
| 9 FB | Feedback sense | Regulates output by comparing divider voltage to internal 0.6V or external REFIN voltage. |
| 10 OUT | Output voltage sense | Direct connection to output node - used only when no external divider is present (e.g., preset mode). |
| 11 FREQ | Frequency set | Resistor to GND programs fSW from 500kHz–2MHz - higher frequencies enable smaller inductors/caps. |
| 12 PWRGD | Power-good flag | Open-drain output asserts high after VFB ≥92.5% VREFIN for 48 clock cycles - signals valid output to sequencer. |
| 13 BST | Bootstrap supply | Charged from IN during low-side conduction; provides gate drive for high-side MOSFET. |
| 14–16 LX | Switch node | All three pins internally shorted - connect to inductor switch node; high impedance in shutdown. |
| 17–20 PGND | Power ground | Low-impedance return for high-current paths; must be tied externally to large ground plane. |
| 21–23 IN | Main input supply | Accepts 2.9V–5.5V; requires 22µF ceramic bypass to PGND close to pins. |
| 24 EN | Enable control | Logic-high enables regulator; logic-low shuts down IC with ≤20µA quiescent current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated power stage | 26mΩ HS / 20mΩ LS nMOSFETs - eliminates external MOSFET selection, layout complexity, and gate-drive design. |
| Nine preset output voltages | 0.6V, 0.7V, 0.8V, 1.0V, 1.2V, 1.5V, 1.8V, 2.0V, 2.5V - achieves ±1% accuracy without 0.1% feedback resistors. |
| Monotonic startup | Guaranteed non-reversing output ramp when MODE = VDD or VDD/2 - prevents damage to prebiased loads like DDR memory. |
| Hiccup-mode OCP | Enters auto-retry after 896 clock cycles upon sustained overcurrent - protects against short-circuit while enabling self-recovery. |
| Thermal shutdown | Triggers at +165°C with 25°C hysteresis - prevents permanent damage during overload or poor heatsinking. |
Applications
| Server Point-of-Load Regulation | ASIC/CPU Core Power |
|---|---|
Use Scenario: Delivering stable 1.2V/6A to multi-core CPU cores in 1U rack servers with tight thermal constraints. IC Role / Device Role / Timing Role: Primary synchronous buck regulator with fast transient response to handle dynamic current steps up to 4A/µs. Use Value: 28MHz error amplifier and 2MHz max fSW enable <150µs recovery from 80% load step, minimizing required bulk capacitance. |
Use Scenario: Generating 0.8V–1.8V I/O supply for FPGA or ASIC with strict sequencing requirements relative to core voltage. IC Role / Device Role / Timing Role: Secondary POL regulator with monotonic startup (MODE = VDD/2) ensuring safe ramp into prebiased I/O banks. Use Value: Pin-programmable VID (CTL1/CTL2) eliminates external resistor networks, reducing BOM count and layout area. |
| DDR Memory Termination (VTT) | Telecom Baseband Power |
Use Scenario: Providing matched 0.6V VTT supply tracking DDR4 VDDQ within ±10mV across temperature in wireless baseband units. IC Role / Device Role / Timing Role: Tracking regulator using REFIN input tied to VDDQ divider - maintains precise voltage ratio under dynamic load. Use Value: Internal 0.6V reference and REFIN input allow direct 1:1 or scaled tracking without op-amp circuitry. |
Use Scenario: Powering DSP and transceiver ICs in small-cell base stations requiring high efficiency at partial load. IC Role / Device Role / Timing Role: High-frequency (1.5MHz) buck converter operating in skip mode below 1A to maintain >85% efficiency at light load. Use Value: Selectable forced-PWM/skip mode optimizes efficiency across full 0–6A range without sacrificing transient performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4433AGL-A-Z | 4A rated, 2.5V–6V input, fixed 500kHz fSW, no VID pins, lower RDS(ON) (13mΩ/8mΩ) | Lacks nine preset outputs and monotonic startup - unsuitable for prebiased DDR or sequenced I/O rails. | Choose for cost-sensitive 4A applications where VID and monotonic start are unnecessary. |
| TPS546B24RVFT | 6A, 3.5V–18V input, PMBus interface, 500kHz–2MHz fSW, integrated telemetry, larger 5mm × 5mm QFN | Supports digital configuration and fault logging but requires MCU firmware integration and larger PCB area. | Choose when digital monitoring, remote trimming, or comprehensive fault reporting are required. |
Compared with MPQ4433AGL-A-Z and TPS546B24RVFT, the MAX15039ETG+T uniquely combines 6A capability, pin-programmable outputs, monotonic startup, and 4mm × 4mm footprint - making it optimal for space-constrained, analog-controlled POL systems needing rapid design-in without firmware overhead.
Availability
MAX15039ETG+T is available at Aetrix Electronics and suitable for server power supplies, ASIC/CPU I/O voltage regulation, and DDR memory termination applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MAX15039ETG+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, communications, and computing applications.
The MAX15039ETG+T belongs to Maxim's high-current, high-frequency POL regulator product line, designed specifically for efficient, compact, and reliable point-of-load conversion in space-constrained server, networking, and telecom equipment.
FAQ
What is the maximum supported switching frequency for MAX15039ETG+T?
The MAX15039ETG+T supports a programmable switching frequency range from 500kHz to 2MHz, set by an external resistor on the FREQ pin. At RFREQ = 23.6kΩ, the typical frequency is 2MHz - enabling use of sub-1µH inductors and all-ceramic output capacitors for minimal board area.
How does MAX15039ETG+T achieve ±1% output voltage accuracy without precision resistors?
The MAX15039ETG+T achieves ±1% output accuracy through factory-trimmed internal reference and nine preset output voltages selectable via CTL1/CTL2 logic states. When CTL1 and CTL2 are grounded, the device uses an internal 0.6V reference with guaranteed accuracy - eliminating need for 0.1% external feedback resistors.
Can MAX15039ETG+T safely start into a prebiased output, and how is this configured?
Yes, the MAX15039ETG+T supports monotonic startup into prebiased outputs when the MODE pin is driven to VDD or VDD/2. This configures the controller to avoid reverse current flow during startup - essential for powering DDR memory or other precharged rails without damaging downstream components.
What thermal management provisions does MAX15039ETG+T include?
The MAX15039ETG+T includes junction-temperature-based thermal shutdown at +165°C with 25°C hysteresis, plus an exposed pad (EP) thermally connected to PGND. With proper PCB copper area (≥250mm²), θJA is 36°C/W - allowing 6A operation at +85°C ambient when mounted on a 4-layer board per JEDEC JESD51-7.
What protection features are integrated into MAX15039ETG+T?
The MAX15039ETG+T integrates cycle-by-cycle overcurrent protection with hiccup-mode recovery, thermal shutdown with hysteresis, input undervoltage lockout (UVLO) on VDD, and open-drain PWRGD with glitch filtering. It also features internal clamping diodes on LX and robust gate-drive architecture to withstand inductive kickback.
MAX15039ETG+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 24-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Programmable)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V (0.6V ~ 2.5V)
- Voltage - Output (Max):
- 4.95V
- Current - Output:
- 6A
- Frequency - Switching:
- 500kHz ~ 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TQFN (4x4)
MAX15039ETG+T FAQ
1.How can I place an order for MAX15039ETG+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX15039ETG+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 MAX15039ETG+T reliable?
The price and inventory of MAX15039ETG+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX15039ETG+T is usually 5 days.
3.What payment methods are accepted for MAX15039ETG+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX15039ETG+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX15039ETG+T?
MAX15039ETG+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX15039ETG+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 MAX15039ETG+T?
For technical support, including MAX15039ETG+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX15039ETG+T requirements.
6.How does Aetrix verify that MAX15039ETG+T is sourced from the original manufacturer or authorized distributors?
All MAX15039ETG+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 MAX15039ETG+T meets industry standards.
7.What is the process for return or replacement of MAX15039ETG+T?
All MAX15039ETG+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX15039ETG+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 MAX15039ETG+T part is unused and in its original packaging.
Return procedure for MAX15039ETG+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX15039ETG+T Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
