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Analog Devices Inc./Maxim Integrated MAXM17635AMG+T
- Part No.:
- MAXM17635AMG+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- DC DC Converters
- Package:
- 24-SMD Module Exposed Pad
- Datasheet:
-
MAXM17635AMG+T.pdf
- Description:
- MAXM17635 4.5V TO 36V INPUT 2A A
- Quantity:
- Payment:
- Shipping:
Inventory:2,532
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Product details
Overview
MAXM17635AMG+T from Maxim Integrated is an adjustable-output, synchronous step-down DC-DC power module integrating controller, MOSFETs, compensation, and inductor in a single uSLIC™ package. It operates from 4.5V to 36V input, delivers up to 2A output current, supports 0.9V–12V adjustable output voltage, employs peak-current-mode control, and features ±1.2% feedback accuracy - used in industrial PLCs and high-voltage single-board systems.
For engineers reviewing the MAXM17635AMG+T datasheet, MAXM17635AMG+T pinout, MAXM17635AMG+T application, or MAXM17635AMG+T equivalent, this page provides verified technical context, validated pin functions, confirmed operating modes (PWM/PFM/DCM), thermal protection thresholds, and real-world efficiency curves across load and input conditions.
Technical Context
The MAXM17635AMG+T implements peak-current-mode control with programmable soft-start and prebias startup capability. Its integrated architecture eliminates external loop compensation and supports all-ceramic output capacitors.
It offers three selectable operation modes - PWM for low-noise full-load regulation, PFM for ultra-low quiescent current at light loads (110μA typ), and DCM for improved light-load efficiency - controlled via the MODE/SYNC pin with defined voltage thresholds (0.75V, VCC/2, VCC−0.65V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 36V - supports wide industrial input rails including 12V, 24V, and 36V battery or bus supplies. |
| Output Voltage Range | 0.9V to 12V (adjustable) - set via external resistor divider on FB pin; enables flexible point-of-load regulation. |
| Max Output Current | 2A continuous - sufficient for FPGA core rails, microcontroller I/O domains, and sensor subsystems. |
| Feedback Accuracy | ±1.2% over −40°C to +125°C - ensures stable output under thermal stress without recalibration. |
| Switching Frequency | 400kHz to 2.2MHz (adjustable via RT pin or external sync) - allows EMI optimization and small external component selection. |
| Shutdown Current | 2.8μA typical - enables ultra-low-power system standby states in battery-powered equipment. |
| Operating Temp Range | −40°C to +125°C ambient - qualified for industrial and automotive under-hood environments. |
Pinout & Package
Package: 24-pin uSLIC™ (4mm × 4mm × 1.75mm, M244A4+1 land pattern). Low-profile, fully integrated module with exposed thermal pad for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input Power Supply | Primary HV input connection (4.5V–36V); requires local ceramic decoupling per layout guidelines. |
| OUT | Regulated Output | Power output node; connects directly to load and output capacitor bank. |
| EN/UVLO | Enable / Input UVLO Control | Logic-enable input with 1.215V rising threshold; also sets input undervoltage lockout level. |
| LX | Switch Node | Internal high-side MOSFET drain connection; critical for layout integrity and EMI control. |
| VCC | Internal LDO Output | 5V ±2.5% regulated supply for internal circuitry; can power external bias circuits (max 25mA). |
| MODE/SYNC | Operation Mode Select / Clock Sync | Selects PWM/DCM/PFM mode or accepts external clock signal (1.1× to 1.4× fSW range). |
| RT | Frequency Set Resistor | Connects to ground via resistor to set switching frequency (e.g., 400kHz with 50.8kΩ). |
| SS | Soft-Start Timing | Charges with 5μA current; sets output ramp time to prevent inrush and overshoot. |
| SGND | Signal Ground Reference | Analog ground reference for FB, SS, MODE/SYNC, RESET, and EN/UVLO pins. |
| EXTVCC | External Bias Input | Optional 4.56V–4.84V switchover input to reduce power loss when VIN > 5.5V. |
| RESET | Open-Drain Power-Good | Asserts low when FB voltage falls below 92% of target; used for system sequencing and fault reporting. |
| FB | Feedback Input | Resistor-divider input for output voltage setting; 0.9V reference for MAXM17635 variants. |
| BST | Bootstrap Capacitor Connection | Connects to 0.1μF ceramic capacitor between BST and LX to drive high-side MOSFET gate. |
| PGND | Power Ground Return | High-current return path for LX, IN, and OUT; must be separated from SGND and tied at single point. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Inductor + Controller + MOSFETs | Reduces BOM count by >15 components and eliminates inductor selection, layout, and EMI tuning effort. |
| Programmable Soft-Start & Prebias Startup | Prevents output voltage overshoot during power-up and enables safe start into precharged outputs (e.g., hot-swap systems). |
| Selectably Optimized Efficiency Modes | PWM (low-noise), PFM (110μA IQ), or DCM (710μA IQ) - dynamically selectable to match load profile and noise requirements. |
| Hiccup Overcurrent + Thermal Shutdown | Auto-retry current limiting (32768-cycle timeout) and 165°C thermal shutdown with 10°C hysteresis ensure robust fault recovery. |
| CISPR22 Class B EMI Compliance | Meets conducted/radiated emissions limits without external filtering - reduces certification risk and board area. |
Applications
| Industrial PLC Power | High-Voltage SBCs |
|---|---|
|
Use Scenario: Powering FPGA I/O banks and ARM Cortex-M7 cores on 24V-powered programmable logic controllers. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering 1.2V @ 1.5A and 3.3V @ 2A from shared 24V rail. Use Value: Eliminates discrete buck controller + inductor + FET design; maintains ±1.2% regulation across −40°C to +85°C operating range. |
Use Scenario: Generating multiple isolated or non-isolated rails (e.g., 1.8V, 2.5V, 5V, 12V) on high-voltage single-board computers used in test equipment. IC Role / Device Role / Timing Role: Adjustable-output DC-DC module enabling rapid rail customization via FB resistor changes without PCB redesign. Use Value: Supports 0.9V–12V output with <10mV ripple (PWM mode) and <50mV ripple (PFM mode), meeting tight analog and digital supply specs. |
| Distributed Telecom Supplies | Automotive Body Control Modules |
|
Use Scenario: Local regulation in distributed base station power architectures where space-constrained remote radio units require compact, efficient 5V/2A supplies. IC Role / Device Role / Timing Role: High-frequency (1MHz) synchronous buck module minimizing output capacitor size while maintaining CISPR22 Class B compliance. Use Value: Achieves >90% efficiency at 1A load with 12V input; passes JESD22-B103/B104 shock/vibration tests for rugged deployment. |
Use Scenario: Powering CAN transceivers, LIN interfaces, and microcontrollers in body control modules exposed to 12V/24V automotive batteries with load dump transients. IC Role / Device Role / Timing Role: Input-rated up to 36V with hiccup OCP and thermal shutdown - withstands ISO 7637-2 pulse 5a/b surges without latch-off. Use Value: Operates continuously from −40°C to +125°C ambient; supports prebias startup during cold-crank conditions (4.5V min VIN). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable-output step-down power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAXM17634AMG+T | Fixed 5V output; identical package, pinout, and feature set except FB network and internal reference. | Not suitable for adjustable-rail designs; ideal only where 5V is required with no external feedback. | Select MAXM17634AMG+T only when fixed 5V output suffices and board layout re-use is prioritized. |
| LMZ31503RKGT | TI 3A module with 2.95–6V input; lacks PFM/DCM modes, higher IQ (25μA), and no external sync capability. | Lower input voltage range limits use in 12V/24V industrial systems; no PFM mode reduces light-load efficiency. | Choose LMZ31503RKGT only for lower-input, higher-current applications where TI ecosystem support is required. |
Compared with MAXM17635AMG+T, the MAXM17634AMG+T saves external resistors but forfeits adjustability, while the LMZ31503RKGT trades wide input range and multi-mode efficiency for higher output current - making MAXM17635AMG+T optimal for flexible, rugged, wide-input industrial point-of-load regulation.
Availability
MAXM17635AMG+T is available at Aetrix Electronics and suitable for industrial control power supplies, distributed telecom regulation, high-voltage single-board computers, and automotive body control modules requiring stable component supply and long-term production continuity.
Supply support for MAXM17635AMG+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, medical, and communications markets.
The Himalaya uSLIC™ power module product line targets space-constrained, thermally demanding applications requiring fast time-to-market - delivering fully integrated, tested, and EMI-compliant DC-DC solutions like MAXM17635AMG+T.
FAQ
What is the minimum output voltage supported by the MAXM17635AMG+T?
The MAXM17635AMG+T supports an adjustable output voltage range from 0.9V to 12V. Its internal feedback reference is 0.9V ±1.2%, verified across temperature and load. This makes it suitable for powering modern low-voltage processors and FPGAs requiring sub-1V core rails when configured with appropriate external resistor dividers.
Does the MAXM17635AMG+T require external compensation components?
No, the MAXM17635AMG+T is internally compensated. Its control loop is factory-tuned to work optimally with all-ceramic output capacitors and standard input/output filter configurations. No external compensation network is needed - simplifying design and eliminating stability tuning effort typically required with discrete buck controllers.
How does the MAXM17635AMG+T handle input undervoltage conditions?
The MAXM17635AMG+T incorporates an EN/UVLO pin with a precise 1.215V rising threshold and 1.09V falling threshold. When input voltage drops below the UVLO threshold, the device shuts down cleanly with hiccup protection disabled and leakage current reduced to 2.8μA - preventing erratic behavior during brown-out events in industrial 24V systems.
Can the MAXM17635AMG+T synchronize to an external clock?
Yes, the MAXM17635AMG+T supports external clock synchronization via the MODE/SYNC pin. When driven with a TTL-compatible square wave, it locks to frequencies within 1.1× to 1.4× its nominal switching frequency (set by RT), enabling deterministic EMI reduction and phase alignment across multiple modules in dense power systems.
What thermal performance can be expected from the MAXM17635AMG+T on a standard four-layer PCB?
On a standard four-layer evaluation board with natural convection, the MAXM17635AMG+T exhibits a junction-to-ambient thermal resistance (θJA) of 25°C/W. At 2A load and 24V input, typical junction temperature rise is ~50°C above ambient - well within its −40°C to +150°C junction rating and enabling reliable operation without forced airflow in most industrial enclosures.
MAXM17635AMG+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Himalaya
- Package/Case:
- 24-SMD Module Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output 1:
- 0.9 ~ 12V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 2A
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- Adjustable Output
- Operating Temperature:
- -40°C ~ 125°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-eMGA (4x4)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MAXM17635AMG+T FAQ
1.How can I place an order for MAXM17635AMG+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXM17635AMG+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 MAXM17635AMG+T reliable?
The price and inventory of MAXM17635AMG+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXM17635AMG+T is usually 5 days.
3.What payment methods are accepted for MAXM17635AMG+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXM17635AMG+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXM17635AMG+T?
MAXM17635AMG+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXM17635AMG+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 MAXM17635AMG+T?
For technical support, including MAXM17635AMG+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXM17635AMG+T requirements.
6.How does Aetrix verify that MAXM17635AMG+T is sourced from the original manufacturer or authorized distributors?
All MAXM17635AMG+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 MAXM17635AMG+T meets industry standards.
7.What is the process for return or replacement of MAXM17635AMG+T?
All MAXM17635AMG+T units undergo pre-shipment inspection (PSI). If there is an issue with MAXM17635AMG+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 MAXM17635AMG+T part is unused and in its original packaging.
Return procedure for MAXM17635AMG+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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