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Analog Devices Inc./Maxim Integrated MAX15041ETE+TCGM
- Part No.:
- MAX15041ETE+TCGM
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX15041ETE+TCGM.pdf
- Description:
- IC REG BUCK ADJ 3A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,159
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Product details
Overview
MAX15041ETE+TCGM from Maxim Integrated is a synchronous step-down DC-DC regulator with integrated 170mΩ high-side and 105mΩ low-side MOSFETs, delivering up to 3A output current across a 4.5V–28V input range and adjustable 0.606V–0.9×VIN output voltage. It features fixed 350kHz peak-current-mode PWM control, internal 5V LDO with UVLO, and safe startup into prebiased outputs-ideal for set-top boxes, televisions, and distributed power systems.
For engineers reviewing the MAX15041ETE+TCGM datasheet, MAX15041ETE+TCGM pinout, MAX15041ETE+TCGM application, or MAX15041ETE+TCGM equivalent, key selection considerations include its 3A continuous output capability, ±1% FB accuracy over temperature, cycle-by-cycle overcurrent protection, thermal shutdown at +155°C, and compatibility with all-ceramic output capacitor designs.
Technical Context
The MAX15041ETE+TCGM implements a fixed-frequency (315–385kHz), peak-current-mode PWM controller with an internal 5V LDO powering its analog core and gate drivers. Its transconductance error amplifier (1.6mS typ) supports Type II compensation, enabling stable operation with low-ESR ceramic capacitors and eliminating need for electrolytic output caps.
Control logic includes independent EN/PGOOD signaling, programmable soft-start via external capacitor, and hiccup-mode overcurrent protection triggered after SS discharge below 0.606V. The device safely starts into prebiased outputs by holding both MOSFETs off until SS crosses FB, then initiating forced PWM if VOUT exceeds the set point.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 28V - supports wide-range industrial and consumer DC inputs including 12V wall adapters and 24V distribution rails. |
| Output Current | Up to 3A continuous - sufficient for powering SoCs, FPGAs, and memory subsystems in set-top boxes and TVs. |
| Output Voltage Range | 0.606V to 0.9 × VIN - enables precise low-voltage core regulation (e.g., 1.2V, 1.8V, 3.3V) using only two external resistors. |
| Switching Frequency | 350kHz (±10%) - balances EMI performance, inductor size, and efficiency; fixed frequency simplifies EMI filtering design. |
| Efficiency | Up to 93% - achieved via low RDS(on) integrated switches (170mΩ HS / 105mΩ LS) and synchronous rectification. |
| Thermal Protection | Thermal shutdown at +155°C with 20°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| FB Accuracy | ±1% over -40°C to +85°C - ensures tight output regulation across full operating temperature range without calibration. |
Pinout & Package
MAX15041ETE+TCGM is housed in a thermally enhanced 3mm × 3mm, 16-pin TQFN-EP package with exposed pad soldered to SGND for optimal heat dissipation (θJA = 48°C/W, θJC = 7°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pins 15, 16) | Primary input power supply | Accepts 4.5V–28V; requires ≥22µF low-ESR ceramic bypass to PGND near pin. |
| LX (Pins 10, 11, 12) | Switch node connection | Drives external inductor; internally clamped to PGND and IN; high-impedance in shutdown. |
| PGND (Pins 13, 14) | Power ground return | Must be connected to SGND at single point near input capacitor; carries high AC switching current. |
| VDD (Pin 1) | Internal 5V LDO output | Powers internal analog circuitry; bypass with ≥1µF ceramic cap to SGND; UVLO threshold 4.25V. |
| FB (Pin 5) | Feedback voltage sense | Monitors resistor divider output; 606mV nominal setpoint; ±100nA bias current minimizes divider error. |
| EN (Pin 3) | Enable control input | Digital enable with 1.95V typical threshold; connects to IN for always-on operation. |
| PGOOD (Pin 2) | Open-drain power-good signal | Asserts low when FB < 545mV; deasserts high-impedance when FB > 560mV; used for sequencing. |
| SS (Pin 6) | Soft-start timing control | Capacitor-to-SGND sets ramp time; also used for hiccup-mode fault detection and recovery timing. |
| BST (Pin 9) | Bootstrap supply for high-side driver | Requires 10nF capacitor to LX and external Schottky diode from VDD; enables 100% duty cycle capability. |
| COMP (Pin 4) | Error amplifier output | Connects to Type II compensation network (RC + C); clamp low at 0.68V aids transient recovery. |
| SGND (Pin 7) | Analog ground reference | Separate from PGND; connects to PCB ground plane at single point near input cap return. |
| I.C. (Pin 8) | Internally connected | Must be tied to SGND externally; no active function but required for proper internal biasing. |
Key Features
| Feature | Design Value |
|---|---|
| All-ceramic capacitor support | Enabled by high-gain transconductance error amplifier (1.6mS) and Type II compensation - eliminates bulk electrolytics and improves reliability. |
| Safe prebiased startup | Both MOSFETs remain off until SS crosses FB; avoids discharging existing output voltage - critical for hot-swap and multi-rail systems. |
| Cycle-by-cycle overcurrent protection | High-side sourcing limit (6A typ) and low-side sinking limit (-3A typ) prevent MOSFET destruction during short circuits or overload. |
| Hiccup-mode fault recovery | After SS discharge, blanking time = 16 × soft-start duration - limits average power during persistent faults while enabling automatic retry. |
| Independent enable & power-good | EN threshold (1.95V) and PGOOD window (545–560mV) allow precise sequencing with other regulators in multi-rail power systems. |
Applications
| Set-Top Boxes | Televisions |
|---|---|
|
Use Scenario: Powering video processing SoCs and memory interfaces requiring stable 1.2V/1.8V/3.3V rails under dynamic load conditions. IC Role / Device Role / Timing Role: Primary buck regulator supplying core logic voltage; handles rapid load transients from video decoding bursts. Use Value: 93% peak efficiency reduces thermal load in sealed enclosures; ±1% FB accuracy maintains SoC stability across ambient temperature swings. |
Use Scenario: Generating intermediate rails (e.g., 5V, 3.3V) for display controllers, audio amplifiers, and USB peripherals in flat-panel TVs. IC Role / Device Role / Timing Role: Secondary buck converter downstream of main 12V/24V bus; provides isolated, sequenced power domains. Use Value: Programmable soft-start prevents inrush-induced brownouts on shared input rails; PGOOD enables safe backlight enable timing. |
| Distributed Power Systems | xDSL Modems |
|
Use Scenario: Local regulation at point-of-load in telecom/datacom equipment where 48V or 24V backplanes feed multiple board-level converters. IC Role / Device Role / Timing Role: Preregulator stepping down intermediate bus voltage (e.g., 12V) to lower voltages for FPGA I/O banks or PHYs. Use Value: 4.5V–28V input range accommodates wide variation in intermediate rail tolerances; 350kHz switching allows compact magnetics. |
Use Scenario: Powering ADSL/VDSL line interface ICs and DSPs in residential broadband modems with space-constrained PCB layouts. IC Role / Device Role / Timing Role: Compact, high-efficiency buck converter replacing discrete solutions to meet strict size and thermal budgets. Use Value: 3mm × 3mm TQFN-EP package saves >40% board area vs. SO-8 alternatives; exposed pad enables passive cooling without heatsinks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2315DJ-LF-P | 3A, 4.5–28V input, 500kHz switching, 130mΩ/85mΩ RDS(on), no internal LDO, requires external bootstrap diode. | Lacks integrated 5V LDO and prebias startup; simpler control but needs more external components. | Preferred when higher switching frequency is needed for smaller inductors, and system already provides clean 5V bias. |
| TPS54331DR | 3A, 3.5–28V input, 570kHz switching, external MOSFETs, 1.221V FB reference, no hiccup mode. | Discrete controller architecture increases BOM count and layout sensitivity; lacks integrated switches and prebias handling. | Chosen when design requires adjustable frequency or higher VIN min; not drop-in due to different pinout and external FET requirement. |
Compared with MP2315DJ-LF-P and TPS54331DR, MAX15041ETE+TCGM offers superior integration (internal LDO, bootstrap diode support, prebias startup) and robust protection (hiccup mode, thermal shutdown), making it optimal for cost-sensitive, space-constrained consumer electronics where reliability and ease of use are prioritized over frequency flexibility.
Availability
MAX15041ETE+TCGM is available at Aetrix Electronics and suitable for set-top boxes, televisions, and xDSL modems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX15041ETE+TCGM 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 industrial, communications, and consumer markets.
The MAX15041 belongs to Maxim's high-efficiency, integrated power regulator product line, designed specifically for cost-sensitive, space-constrained applications needing reliable 3A buck conversion with minimal external components.
FAQ
What is the maximum duty cycle supported by the MAX15041ETE+TCGM?
The MAX15041ETE+TCGM supports a maximum duty cycle of 90%, enabling high step-down ratios (e.g., 12V to 1.2V) while maintaining stable regulation. This is enforced by internal logic that terminates high-side conduction before exceeding 90% of the switching period, regardless of input/output voltage conditions. The 90% limit ensures sufficient off-time for low-side conduction and inductor current reset, preserving current-mode stability and preventing subharmonic oscillation.
Does the MAX15041ETE+TCGM require an external bootstrap diode?
Yes, the MAX15041ETE+TCGM requires an external Schottky or fast-switching diode connected between VDD and BST pins. This diode charges the BST-to-LX capacitor during low-side conduction, enabling proper high-side gate drive. A 1N4148 or equivalent (≥150mA rating, reverse voltage > VIN) is recommended. The MAX15041ETE+TCGM does not integrate this diode, unlike some newer regulators, so omission will cause startup failure or erratic high-side switching.
Can the MAX15041ETE+TCGM start up into a prebiased output voltage?
Yes, the MAX15041ETE+TCGM safely starts into prebiased outputs both below and above the regulated set point. When VOUT is prebiased, both MOSFETs remain off until SS voltage crosses FB, avoiding discharge. If VOUT exceeds the set point, forced PWM begins when SS reaches 0.65V (typ), allowing controlled ramp-up without overshoot. This feature is confirmed in the datasheet's "Starting into a Prebiased Output" section and validated in typical waveforms (toc17/toc18).
What is the purpose of the I.C. pin (Pin 8) on the MAX15041ETE+TCGM?
The I.C. (Internally Connected) pin on the MAX15041ETE+TCGM must be externally connected to SGND. Though it has no active signal function, this connection is required to complete internal bias networks and ensure proper operation of the error amplifier and reference circuitry. Leaving Pin 8 floating may cause instability, inaccurate FB regulation, or startup failure - as specified in the Pin Description table and Figure 3 schematic of the MAX15041ETE+TCGM datasheet.
How is output voltage accuracy maintained over temperature for the MAX15041ETE+TCGM?
The MAX15041ETE+TCGM achieves ±1% output voltage accuracy over -40°C to +85°C primarily through its tightly regulated 606mV (±6mV) feedback reference voltage (VFB), which exhibits minimal drift across temperature (±0.002%/°C typical). Combined with low FB input bias current (±100nA), this ensures resistor-divider-based output setting remains stable. The ±1% spec is guaranteed by design and characterization - not just tested at +25°C - and is explicitly stated in the Electrical Characteristics table under "FB Set-Point Accuracy".
MAX15041ETE+TCGM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 28V
- Voltage - Output (Min/Fixed):
- 0.606V
- Voltage - Output (Max):
- 25.2V
- Current - Output:
- 3A
- Frequency - Switching:
- 350kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
MAX15041ETE+TCGM FAQ
1.How can I place an order for MAX15041ETE+TCGM through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX15041ETE+TCGM 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 MAX15041ETE+TCGM reliable?
The price and inventory of MAX15041ETE+TCGM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX15041ETE+TCGM is usually 5 days.
3.What payment methods are accepted for MAX15041ETE+TCGM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX15041ETE+TCGM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX15041ETE+TCGM?
MAX15041ETE+TCGM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX15041ETE+TCGM 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 MAX15041ETE+TCGM?
For technical support, including MAX15041ETE+TCGM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX15041ETE+TCGM requirements.
6.How does Aetrix verify that MAX15041ETE+TCGM is sourced from the original manufacturer or authorized distributors?
All MAX15041ETE+TCGM 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 MAX15041ETE+TCGM meets industry standards.
7.What is the process for return or replacement of MAX15041ETE+TCGM?
All MAX15041ETE+TCGM units undergo pre-shipment inspection (PSI). If there is an issue with MAX15041ETE+TCGM, 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 MAX15041ETE+TCGM part is unused and in its original packaging.
Return procedure for MAX15041ETE+TCGM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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