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Analog Devices Inc./Maxim Integrated MAX15036ATE+
- Part No.:
- MAX15036ATE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX15036ATE+.pdf
- Description:
- IC REG BUCK BOOST ADJ 3A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,028
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Product details
Overview
The MAX15036ATE+ from Maxim Integrated is a high-frequency, nonsynchronous buck or boost DC-DC converter with an integrated 150mΩ n-channel power MOSFET, delivering up to 3A output current, supporting 4.5V–5.5V or 5.5V–23V input ranges, and offering resistor-programmable switching frequency from 200kHz to 2.2MHz. It features a clock output (CKO) for 180° out-of-phase interleaving and a power-on-reset (RESET) signal, making it suitable for compact point-of-load regulation in xDSL modems and automotive radio supplies.
For engineers reviewing the MAX15036ATE+ datasheet, MAX15036ATE+ pinout, MAX15036ATE+ application, or MAX15036ATE+ equivalent, key selection considerations include its nonsynchronous topology, integrated high-side switch, CKO synchronization capability, RESET timing behavior (200ms timeout), and thermal performance in the 5mm × 5mm TQFN-EP package.
Technical Context
The MAX15036ATE+ implements voltage-mode PWM control with peak current limiting and digital soft-start (4096 oscillator cycles, 64 steps). Its internal 5.2V VL regulator powers control circuitry and requires dual bypassing-4.7μF to SGND and 0.1μF to PGND-while BST/VDD uses a bootstrap capacitor for high-side gate drive.
It supports both buck (high-side switch) and boost (low-side switch) topologies via pin-strapped DRAIN/SOURCE configuration. The CKO output delivers a logic-level clock at fSW with 115° phase delay relative to SOURCE, enabling master/slave interleaving without external phase-shift circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V–5.5V or 5.5V–23V - enables dual-input-range operation; V+ and VL tied for low-Vin mode |
| Output Current | Up to 3A - limited by package thermal dissipation (2.7W max in TQFN) |
| Switching Frequency | 200kHz–2.2MHz - set by ROSC resistor; supports external SYNC from 200kHz–2.2MHz |
| Internal MOSFET RDS(on) | 150mΩ (typ) - defines conduction loss and thermal budget in buck/boost paths |
| Feedback Reference | 0.600V (±0.9%) - sets output voltage via resistive divider; enables down to 0.6V buck or up to 28V boost |
| RESET Timeout | 200ms (typ) - ensures stable output before asserting open-drain RESET high |
| Thermal Shutdown | +170°C (rising) with 25°C hysteresis - protects against sustained overload or poor PCB heatsinking |
Pinout & Package
The MAX15036ATE+ is housed in a thermally enhanced 16-pin TQFN-EP (5mm × 5mm) package with exposed pad soldered to SGND for optimal heat transfer. Pin 16 (EN) controls startup; Pin 15 (BST/VDD) supplies gate driver; Pin 9 is unused (NC) on MAX15036ATE+ (DL is MAX15037-only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,2 DRAIN | High-side MOSFET drain (buck) / low-side MOSFET drain (boost) | Primary power switch node; connects to VIN (buck) or inductor/diode junction (boost) |
| 3 COMP | Error amplifier output | Drives compensation network (COMP–SGND or COMP–FB–SGND) to stabilize loop response |
| 4 FB | Feedback input | Senses output voltage via resistor divider; referenced to 0.600V internal bandgap |
| 5 OSC | Oscillator frequency set | ROSC resistor to SGND programs fSW; required even during SYNC operation |
| 6 BYPASS | Reference bypass | 0.22μF ceramic cap to SGND filters BYPASS (2.0V) reference for stable error amp |
| 7 V+ | Main input supply | Accepts 4.5V–23V; bypass with ≥0.1μF ceramic close to pin |
| 8 VL | Internal 5.2V LDO output | Powers control circuitry; bypass with 4.7μF to SGND + 0.1μF to PGND |
| 9 CKO | Clock output | Logic-level fSW clock, 115° out-of-phase with SOURCE; drives slave converter SYNC |
| 10 SGND | Signal ground | Reference for FB, COMP, OSC, EN, SYNC, RESET; separate from PGND |
| 11 PGND | Power ground | Return path for V+, VL bypass caps, output capacitor, rectifier diode anode |
| 12 SOURCE | MOSFET source | Connects to switched inductor node (buck) or PGND (boost) |
| 13 SYNC | External sync input | Accepts 200kHz–2.2MHz logic clock; rising edge triggers MOSFET turn-on |
| 14 RESET | Open-drain power-on reset | Active-low; asserts low until VOUT >92.5% of setpoint, then holds low 200ms before going high |
| 15 BST/VDD | Bootstrap driver supply | Connects to flying cap + diode (buck) or 0.1μF bypass cap (boost); enables high-side gate drive |
| 16 EN | Enable input | TTL-compatible (2.0V/0.8V thresholds); low disables converter and forces RESET low |
| EP | Exposed pad | Must be soldered to SGND plane; primary thermal path (θJC = 1.7°C/W) |
Key Features
| Feature | Design Value |
|---|---|
| Nonsynchronous buck/boost topology | Enables flexible single-MOSFET designs with external Schottky diode; avoids synchronous FET complexity and cost |
| Integrated 150mΩ high-side n-MOSFET | Reduces BOM count and layout area; eliminates external high-side switch and driver |
| CKO clock output with 115° phase shift | Supports two-phase interleaved operation without external delay circuits or PLLs |
| Digital soft-start (4096 cycles) | Prevents input surge current and output overshoot; programmable via fSW and OSC resistor |
| Resistor-programmable fSW (200kHz–2.2MHz) | Allows optimization of size (higher fSW → smaller inductors/caps) vs. efficiency (lower fSW → lower switching loss) |
| Thermal shutdown with 25°C hysteresis | Ensures safe recovery after overtemperature event without oscillation or latch-up |
Applications
| xDSL Modem Power Supplies | Automotive Radio Power Supplies |
|---|---|
Use Scenario: Generating isolated 3.3V/5V rails from 12V battery in compact DSL modem chassis with strict EMI limits. IC Role / Device Role / Timing Role: Nonsynchronous buck converter providing regulated output; CKO synchronizes secondary converter to reduce input ripple. Use Value: 2.2MHz operation enables <10μH inductors and 22μF ceramic output caps, minimizing board area while meeting CISPR-22 conducted emissions. | Use Scenario: Point-of-load conversion in infotainment head unit where space is constrained and ambient temperature reaches +85°C. IC Role / Device Role / Timing Role: High-efficiency buck regulator powering DSP/FPGA core; RESET signals system controller only after stable 3.3V rail is confirmed. Use Value: Thermal shutdown at +170°C and -40°C to +125°C operating range ensure reliability across automotive temperature extremes. |
| Servers and Networks | IP Phones/WLAN Access Points |
Use Scenario: Distributed 5V-to-3.3V conversion on blade server daughterboards with shared input bus. IC Role / Device Role / Timing Role: Interleaved dual-MAX15036ATE+ configuration using CKO→SYNC to halve input RMS current. Use Value: Input ripple frequency doubles to 4.4MHz, reducing required bulk capacitance by >40% versus single-phase design. | Use Scenario: PoE-powered WLAN access point requiring efficient 48V-to-3.3V conversion in sealed enclosure with no airflow. IC Role / Device Role / Timing Role: Boost converter stepping up auxiliary 5V rail to 12V for RF front-end; RESET enables safe boot sequencing. Use Value: 28V max boost capability and 0.6V feedback reference allow precise output setting across load transients per IEEE 802.3af/at specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar nonsynchronous buck/boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX15037ATE+ | Synchronous buck only; includes DL driver and PGOOD (no CKO or RESET) | Higher efficiency (>90% at 1.5A) but lacks boost capability and clock output | Select MAX15037ATE+ when efficiency >85% at full load is critical and topology is fixed to buck only. |
| LM5122MH/NOPB | Current-mode controller (not integrated MOSFET); supports wider Vin (3V–65V); requires external high-side FET | Greater flexibility in power stage design and higher voltage tolerance, but larger solution size | Choose LM5122MH/NOPB for >23V input or when discrete FET selection is needed for thermal/power optimization. |
Compared with MAX15037ATE+, the MAX15036ATE+ trades synchronous efficiency for topology flexibility and clock synchronization; compared with LM5122MH/NOPB, it sacrifices input voltage range and external FET control for integration, size reduction, and simplified layout.
Availability
The MAX15036ATE+ is available at Aetrix Electronics and suitable for xDSL modem power supplies, automotive radio power supplies, and IP phone/WLAN access point designs requiring stable component supply, lead-free compliance, and extended temperature support.
Supply support for MAX15036ATE+ 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 precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX15036ATE+ belongs to Maxim's high-frequency DC-DC converter product line, engineered for compact, high-density point-of-load regulation where integration, thermal robustness, and multi-topology flexibility are essential.
FAQ
What topology configurations does the MAX15036ATE+ support?
The MAX15036ATE+ supports both nonsynchronous buck (high-side switch) and boost (low-side switch) topologies. In buck mode, DRAIN connects to VIN and SOURCE to the inductor; in boost mode, DRAIN connects to the inductor/diode junction and SOURCE to PGND. The MAX15036ATE+ does not support synchronous rectification or SEPIC/Cuk configurations.
How is the switching frequency set on the MAX15036ATE+?
The MAX15036ATE+ switching frequency is set by a resistor (ROSC) connected from the OSC pin to SGND, covering 200kHz to 2.2MHz. Even when externally synchronized via the SYNC pin, ROSC must remain installed and be selected so that 0.8×fSYNC ≤ fSW ≤ 1.2×fSYNC. The MAX15036ATE+ datasheet provides the exact ROSC–fSW relationship.
What is the function of the CKO pin on the MAX15036ATE+?
The CKO pin on the MAX15036ATE+ outputs a logic-level clock signal at the same frequency as the internal switching frequency, with a fixed 115° phase delay relative to the SOURCE waveform. It is used to synchronize a second MAX15036ATE+ (or MAX15037ATE+) in master/slave interleaved operation, achieving near-180° phase offset for reduced input ripple.
Does the MAX15036ATE+ require external components for bootstrap operation in buck mode?
Yes - in buck mode, the MAX15036ATE+ requires an external bootstrap network: a ceramic capacitor (typically 0.1μF) and a Schottky diode connected between BST/VDD and the SOURCE node. This network charges during the low-side conduction period to provide sufficient gate drive voltage for the internal high-side MOSFET.
What is the purpose and timing behavior of the RESET output on the MAX15036ATE+?
The RESET output on the MAX15036ATE+ is an open-drain, active-low signal that remains low until the output voltage exceeds 92.5% of its nominal setpoint, then stays low for a fixed 200ms timeout before going high. This ensures downstream logic only initializes after sustained regulation is achieved, preventing premature system boot under marginal conditions.
MAX15036ATE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Strip
- Product Status:
- Active
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck, Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 23V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 28V
- Current - Output:
- 3A
- Frequency - Switching:
- 312kHz ~ 2.1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (5x5)
MAX15036ATE+ FAQ
1.How can I place an order for MAX15036ATE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX15036ATE+ 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 MAX15036ATE+ reliable?
The price and inventory of MAX15036ATE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX15036ATE+ is usually 5 days.
3.What payment methods are accepted for MAX15036ATE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX15036ATE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX15036ATE+?
MAX15036ATE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX15036ATE+ 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 MAX15036ATE+?
For technical support, including MAX15036ATE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX15036ATE+ requirements.
6.How does Aetrix verify that MAX15036ATE+ is sourced from the original manufacturer or authorized distributors?
All MAX15036ATE+ 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 MAX15036ATE+ meets industry standards.
7.What is the process for return or replacement of MAX15036ATE+?
All MAX15036ATE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX15036ATE+, 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 MAX15036ATE+ part is unused and in its original packaging.
Return procedure for MAX15036ATE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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