My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX17536ATP+T
- Part No.:
- MAX17536ATP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 20-WQFN Exposed Pad
- Datasheet:
-
MAX17536ATP+T.pdf
- Description:
- IC REG BUCK ADJ 4A 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,662
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX17536ATP+T from Maxim Integrated is a high-voltage, synchronous step-down DC-DC converter with integrated high-side MOSFET, operating from 4.5V to 60V input and delivering up to 4A output current. It supports adjustable output voltages from 0.9V to 90% of VIN, achieves ±1.4% FB regulation accuracy over –40°C to +125°C, and uses peak current-mode control with selectable PWM/PFM/DCM modes. It is used in industrial power supplies requiring robust, wide-input, high-efficiency point-of-load conversion.
For engineers reviewing the MAX17536ATP+T datasheet, MAX17536ATP+T pinout, MAX17536ATP+T application, or MAX17536ATP+T equivalent, key selection criteria include its 4.5–60V input range, internal compensation eliminating external loop components, 450kHz default switching frequency (adjustable 100kHz–2.2MHz), hiccup-mode overload protection, and EXTVCC-driven efficiency optimization for high-VIN operation.
Technical Context
The MAX17536ATP+T implements peak current-mode control with an internal transconductance error amplifier, slope compensation, and PWM comparator driving an integrated 90mΩ high-side nMOSFET. Its MODE/SYNC pin latches at power-up to select constant-frequency PWM (MODE = GND), pulse-skipping PFM (MODE open), or DCM (MODE = VCC), enabling dynamic efficiency optimization across load conditions.
It integrates dual LDOs - one powered from VIN (INLDO) and one from EXTVCC - with automatic switchover at ~4.7V; when EXTVCC ≥ 4.84V, VCC draws from the buck output, reducing power loss and improving system efficiency at high input voltages. The DL pin supports external low-side nMOSFET gate drive with programmable current-limit thresholds via resistor selection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports direct connection to unregulated industrial rails, battery stacks, or wall adapters without pre-regulation. |
| Output Current | Up to 4A continuous - delivers full rated load without derating at +70°C ambient on multilayer PCB with thermal vias. |
| Feedback Accuracy | ±1.4% over –40°C to +125°C - ensures stable output regulation across extended industrial temperature range without calibration. |
| Switching Frequency | 100kHz to 2.2MHz (RT-programmable) - enables EMI-sensitive designs and compact magnetics; default 450kHz balances efficiency and size. |
| Peak Efficiency | >95% - achieved at mid-load with 24V→5V conversion, minimizing thermal stress and board-level cooling requirements. |
| Shutdown Current | 3.5µA - enables ultra-low-power standby in always-on systems such as remote sensors or IoT edge nodes. |
| Operating Temp Range | –40°C to +125°C ambient - qualified for harsh environments including factory automation, base station power, and transportation electronics. |
Pinout & Package
Package: 20-pin thin QFN (TQFN), 5mm × 5mm, exposed pad (EP). Thermal resistance θJA = 23°C/W (4-layer board), θJC = 2°C/W - requires EP soldered to SGND plane with ≥6 thermal vias for reliable 4A operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pins 1,2,14,15) | Power input supply | Four parallel pins reduce IR drop and thermal resistance; must be decoupled with two 2.2µF ceramics close to package. |
| PGND (Pin 3) | Power ground return | High-current return path for LX switching node; must connect externally to power-ground plane, separate from SGND until VCC bypass cap. |
| SGND (Pin 8) | Analog reference ground | Reference for FB, CF, RT, MODE/SYNC, EN/UVLO; connects to PGND only at VCC bypass capacitor node to avoid noise coupling. |
| LX (Pins 17–19) | Switching node | Three parallel pins handle high di/dt; connect directly to inductor switch node with minimal trace length to reduce EMI and voltage spikes. |
| DL (Pin 20) | Low-side gate driver output | Drives external nMOSFET gate; resistor value (e.g., 4.7Ω) sets hiccup current limit and runaway threshold per datasheet table. |
| MODE/SYNC (Pin 5) | Control mode selection / sync input | Latched at startup to configure PWM/DCM/PFM; also accepts external clock (1.1–1.4× fSW) for synchronized multi-rail systems. |
| FB (Pin 10) | Feedback input | Connects to resistor divider from VOUT; 0.9V internal reference enables precise output setting with <±1.4% tolerance over full temp range. |
| EXTVCC (Pin 11) | Auxiliary LDO input | When ≥4.84V applied, powers VCC from output rail instead of VIN - improves efficiency by ~2–3% at VIN > 24V. |
Key Features
| Feature | Design Value |
|---|---|
| Internal compensation | Eliminates need for external Type-II/III compensation network - reduces BOM count, layout area, and tuning effort across all output voltages. |
| Programmable EN/UVLO | Resistor-divider on EN/UVLO pin sets turn-on threshold from 1.19V to 1.24V - enables precise brown-in/brown-out control for system sequencing. |
| Monotonic startup into prebiased load | Prevents reverse current flow during hot-plug or partial-power-up scenarios - critical for redundant power systems and FPGA/CPU rails. |
| Built-in RESET with monitoring | Open-drain RESET asserts low when VOUT drops below 92.5% of setpoint and deasserts after 1024 cycles once VOUT rises above 95.5% - provides reliable power-good signaling. |
| DL-to-LX short detection | Hardware-level fault detection isolates low-side FET failure before catastrophic damage - enhances reliability in mission-critical industrial applications. |
| Thermal shutdown with hysteresis | Shuts down at +165°C junction temperature and restarts at +155°C - prevents thermal runaway while avoiding oscillatory cycling near trip point. |
Applications
| Industrial Power Supplies | Distributed Supply Regulation |
|---|---|
Use Scenario: Central 48V bus powering multiple isolated 5V/3.3V rails in PLC backplanes or motor drives. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator delivering 4A at 5V with hiccup-mode overload protection and EXTVCC efficiency boost. Use Value: Eliminates need for external compensation and Schottky diode, reducing solution size by 30% vs. controller+FET discrete designs. |
Use Scenario: Local 24V-to-3.3V conversion on sensor node PCBs with strict EMI limits and light-load battery runtime requirements. IC Role / Device Role / Timing Role: PFM-mode step-down converter providing regulated 3.3V with 3.5µA shutdown current and monotonic startup. Use Value: Achieves >85% efficiency at 10mA load, extending battery life in wireless condition-monitoring devices by 2.1× vs. PWM-only alternatives. |
| Base-Station Power Supplies | High-Voltage Single-Board Systems |
Use Scenario: 54V telecom rectifier output converted to 12V intermediate bus for RF amplifiers and digital signal processors. IC Role / Device Role / Timing Role: High-input-voltage buck stage operating at 200kHz (RRT = 93.1kΩ) to minimize EMI in dense RF environments. Use Value: Maintains >92% efficiency at 4A/12V with 54V input, reducing heat sink requirements and enabling fanless enclosure design. |
Use Scenario: Direct 36V–60V battery input powering 5V FPGA core and 3.3V I/O rails on ruggedized avionics or rail transit control boards. IC Role / Device Role / Timing Role: Dual-output implementation using two MAX17536ATP+T devices with synchronized MODE/SYNC pins to eliminate beat frequencies. Use Value: Synchronization ensures deterministic ripple cancellation and simplifies EMI filter design across multiple rails sharing same input source. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QPWPRQ1 | 4.5–65V input, 0.5A max, no internal high-side FET - requires external MOSFET; no EXTVCC option or DL pin. | Targeted at lower-current automotive body electronics; lacks hiccup protection and monotonic startup. | Select when cost sensitivity outweighs integration needs and load current ≤ 0.5A. |
| TPS544B25RTER | 4.5–18V input, 4A, integrated FET, but limited to 18V max - unsuitable for 24V+ industrial inputs. | Designed for server VR13/VR14 CPU core rails; optimized for fast transient response, not wide-VIN robustness. | Choose only for low-input-voltage data center applications where 60V rating is unnecessary. |
Compared with LM5164QPWPRQ1 and TPS544B25RTER, the MAX17536ATP+T uniquely combines 60V input capability, 4A integrated power stage, EXTVCC efficiency enhancement, and hiccup-mode protection - making it the sole option among the three qualified for 48V industrial power distribution with full fault coverage.
Availability
The MAX17536ATP+T is available at Aetrix Electronics and suitable for industrial power supplies, distributed supply regulation, and base-station power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX17536ATP+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 precision analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The MAX17536ATP+T belongs to Maxim's high-voltage DC-DC converter family engineered for rugged, wide-input industrial power conversion - emphasizing reliability, internal integration, and operation across extreme ambient temperatures.
FAQ
What is the absolute maximum input voltage rating for the MAX17536ATP+T?
The MAX17536ATP+T has an absolute maximum VIN-to-PGND rating of +65V. However, its functional operating range is specified from 4.5V to 60V. Exceeding 60V may cause overvoltage stress on internal circuitry despite surviving brief transients; sustained operation above 60V voids parametric guarantees and risks premature failure. Always include clamping or filtering for input surges beyond 60V.
Can the MAX17536ATP+T operate without an external bootstrap capacitor?
No - the MAX17536ATP+T requires a 0.1µF ceramic capacitor between BST and LX pins to charge the high-side MOSFET gate driver. Omitting this capacitor prevents proper high-side FET turn-on, resulting in no output regulation. The BST capacitor must be placed adjacent to the IC with short, low-inductance traces to ensure reliable gate drive under all load and temperature conditions.
How does the EXTVCC pin improve efficiency in the MAX17536ATP+T?
The EXTVCC pin allows the MAX17536ATP+T to power its internal VCC LDO from the buck output rail instead of VIN when EXTVCC ≥ 4.84V. This bypasses the INLDO dropout loss, reducing quiescent power dissipation - especially beneficial at high input voltages (e.g., 48V→5V), where efficiency gains of 2–3% are typical. An R-C filter (4.7Ω + 0.1µF) is mandatory to protect EXTVCC during output short-circuit events.
Is the MAX17536ATP+T pin-compatible with other devices in the MAX1753x family?
No - the MAX17536ATP+T is not pin-compatible with MAX17534 or MAX17535. While all share the same 20-pin TQFN package, pin functions differ significantly: e.g., MAX17534 lacks EXTVCC and DL pins, and MAX17535 uses different MODE logic and FB reference. PCB layout and schematic must be designed specifically for MAX17536ATP+T; no mechanical or electrical drop-in replacement exists within the family.
What is the minimum off-time specification for the MAX17536ATP+T, and why does it matter?
The MAX17536ATP+T has a guaranteed minimum off-time (tOFF-MIN) of 140ns. This parameter limits the lowest achievable output voltage at high input voltages - for example, at VIN = 60V, the practical minimum VOUT is ~8.4V (60V × 140ns / tSW at 450kHz). Designers must verify that required VOUT and fSW satisfy VOUT ≥ VIN × tOFF-MIN × fSW to avoid pulse-skipping instability or regulation loss.
MAX17536ATP+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WQFN 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):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 54V
- Current - Output:
- 4A
- Frequency - Switching:
- 100kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN (5x5)
MAX17536ATP+T FAQ
1.How can I place an order for MAX17536ATP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17536ATP+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 MAX17536ATP+T reliable?
The price and inventory of MAX17536ATP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17536ATP+T is usually 5 days.
3.What payment methods are accepted for MAX17536ATP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17536ATP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17536ATP+T?
MAX17536ATP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17536ATP+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 MAX17536ATP+T?
For technical support, including MAX17536ATP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17536ATP+T requirements.
6.How does Aetrix verify that MAX17536ATP+T is sourced from the original manufacturer or authorized distributors?
All MAX17536ATP+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 MAX17536ATP+T meets industry standards.
7.What is the process for return or replacement of MAX17536ATP+T?
All MAX17536ATP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17536ATP+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 MAX17536ATP+T part is unused and in its original packaging.
Return procedure for MAX17536ATP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX17536ATP+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…
