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Analog Devices Inc./Maxim Integrated MAXM17537ALY#
- Part No.:
- MAXM17537ALY#
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- DC DC Converters
- Package:
- 29-PowerBLGA Module
- Datasheet:
-
MAXM17537ALY#.pdf
- Description:
- DC DC CONVERTER 8-24V
- Quantity:
- Payment:
- Shipping:
Inventory:2,160
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Product details
Overview
The MAXM17537ALY# from Maxim Integrated is a 4.5V–60V input, 3A synchronous step-down SiP power module with integrated inductor, dual MOSFETs, compensation network, and auxiliary LDO - delivering regulated 8V–24V output in a compact 9mm × 15mm × 4.32mm thermally enhanced package. It supports PWM/DCM/PFM control modes, features programmable soft-start, RESET monitoring, and operates across –40°C to +125°C for industrial point-of-load regulation.
For engineers reviewing the MAXM17537ALY# datasheet, MAXM17537ALY# pinout, MAXM17537ALY# application, or MAXM17537ALY# equivalent, key selection criteria include its wide input range, integrated thermal protection, adjustable switching frequency (100kHz–2.2MHz), hiccup-mode overload response, and compatibility with FPGA/DSP supply rails requiring stable 3A output at 12V/15V/24V.
Technical Context
The MAXM17537ALY# implements peak-current-mode control with internal transconductance error amplifier, slope compensation, and high-side current sensing. Its architecture enables precise duty-cycle modulation across full load and temperature range while maintaining stability via built-in loop compensation - eliminating external type-II/type-III networks.
It integrates two independent LDO paths (INLDO and EXTVCC LDO) with automatic switchover logic, enabling efficient VCC biasing from either input rail or external 4.7V–24V source. The MODE/SYNC pin latches mode configuration at power-up (PWM/DCM/PFM) and supports external clock synchronization within ±40% of programmed fSW, ensuring EMI control in noise-sensitive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 60V - supports direct connection to 12V, 24V, 48V industrial buses without pre-regulation. |
| Output Current | 3A continuous - sustains full rated load over –40°C to +125°C ambient with derating per thermal curve. |
| Output Voltage Range | 8V to 24V - set externally via resistor divider on FB pin; ±1.5% regulation accuracy over full temperature range. |
| Switching Frequency | 100kHz to 2.2MHz - adjustable via RT-to-SGND resistor; default 450kHz when RT open; supports EMI optimization and layout flexibility. |
| Control Modes | PWM, PFM, DCM - selectable via MODE/SYNC pin; PFM enables ultra-low IQ (128μA) at light loads; PWM ensures constant-frequency operation. |
| Thermal Protection | 165°C shutdown with 10°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| RESET Output | Open-drain, active-low - asserts when VOUT falls below 92.5% of setpoint; deasserts after 1024 cycles once VOUT rises above 95.5%. |
Pinout & Package
The MAXM17537ALY# is housed in a 29-pin, low-profile system-in-package (SiP) measuring 9mm × 15mm × 4.32mm with three exposed thermal pads (EP1/EP2/EP3) connected internally to PGND/SGND for enhanced heat dissipation. The package uses standard reflow soldering profiles and is compatible with automated PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | 5V LDO output | Internally bypassed with 2.2µF capacitor; no external components allowed - powers internal circuitry. |
| RESET (Pin 2) | Open-drain fault indicator | Signals undervoltage condition on FB node; requires external pull-up for logic-level interface with host controller. |
| RT (Pin 3) | Frequency programming input | Resistor-to-SGND sets fSW; open = 450kHz default; enables EMI tailoring and inductor size optimization. |
| SGND (Pin 4) | Analog reference ground | Separate from PGND to minimize noise coupling into feedback and compensation circuits. |
| CF (Pin 5) | Compensation node | Connects 2.2pF capacitor to FB - completes internal type-II compensation; no external RC network required. |
| FB (Pin 6) | Feedback voltage sense | Monitors output via resistor divider; regulates VOUT to 0.9V reference with ±1.5% accuracy over temperature. |
| SS (Pin 7) | Soft-start timing input | Capacitor-to-SGND controls ramp rate; prevents inrush current and stabilizes startup sequence. |
| EN/UVLO (Pin 8) | Enable and input UVLO threshold | Resistor-to-SGND sets turn-on threshold (1.215V typ); open = enabled; provides input bus supervision. |
| IN (Pins 9, 28) | Main power input | High-current path for 4.5V–60V supply; requires local ceramic decoupling close to pins. |
| PGND (Pins 10, 14–21, 27) | Power ground return | Multiple pins reduce impedance and improve thermal conduction; must be tied to large copper pour. |
| EXTVCC (Pin 11) | External LDO input | Bypasses internal INLDO when 4.7V–24V applied; improves efficiency at high VIN by reducing dropout losses. |
| BST (Pin 12) | Bootstrap capacitor node | Internally connected to LX via 0.1µF capacitor; no external components permitted - critical for high-side gate drive. |
| LX (Pin 13) | Switching node | Internal connection between MOSFETs and inductor; unconnected externally - must remain floating. |
| OUT (Pins 22–25) | Regulated output | Delivers up to 3A; requires bulk and high-frequency ceramic capacitors to PGND for ripple suppression. |
| DL (Pin 26) | Low-side gate driver output | Drives internal low-side MOSFET; no external access - part of fully integrated power stage. |
| MODE/SYNC (Pin 29) | Mode selection and sync input | Latched at power-up: SGND = PWM, VCC = DCM, open = PFM; also accepts external clock for EMI synchronization. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated inductor and MOSFETs | Eliminates 12+ external components including power inductor, high/low-side FETs, and gate drivers - reduces BOM count and layout risk. |
| Single-package power solution | 9mm × 15mm footprint replaces discrete buck converter + inductor + compensation - saves >50% board area vs. typical discrete designs. |
| Programmable soft-start | Adjustable ramp time via SS capacitor prevents input inrush and output overshoot during cold start or hot-plug events. |
| Hiccup-mode overload protection | Auto-retries after thermal or current fault instead of latch-off - maintains system availability during transient overloads. |
| Three operating modes (PWM/PFM/DCM) | Enables optimal efficiency trade-off: PFM for ultra-low IQ standby, DCM for mid-load balance, PWM for EMI-critical full-load operation. |
Applications
| Test and Measurement Equipment | Distributed Supply Regulation |
|---|---|
Use Scenario: Powering precision ADCs, DACs, and analog front-ends in benchtop analyzers and portable meters. IC Role / Device Role / Timing Role: Point-of-load regulator delivering clean, low-noise 12V/15V rails with tight line/load regulation (<6mV/A). Use Value: Built-in compensation and ±1.5% VOUT accuracy ensure measurement integrity without external tuning. | Use Scenario: Providing isolated 24V/15V outputs across multi-board industrial backplanes with varying local loads. IC Role / Device Role / Timing Role: Distributed DC-DC converter replacing centralized PSUs to reduce IR drop and improve dynamic response. Use Value: 3A capability and hiccup-mode protection sustain operation during partial short-circuits on downstream boards. |
| FPGA and DSP Point-of-Load Regulator | Base-Station Point-of-Load Regulator |
Use Scenario: Supplying core voltage (12V) and I/O banks (15V/24V) for Xilinx Artix/Kintex or TI C6000 series processors. IC Role / Device Role / Timing Role: High-efficiency, fast-transient-response regulator meeting FPGA power sequencing and droop requirements. Use Value: PFM mode achieves <130μA quiescent current in idle state; load-step response <50µs with <±2% deviation. | Use Scenario: Delivering 24V bias to RF power amplifiers and fronthaul interfaces in 4G/5G macro base stations. IC Role / Device Role / Timing Role: Robust intermediate bus converter operating from 48V telecom supply with high-temp reliability. Use Value: –40°C to +125°C rating and 165°C thermal shutdown enable deployment in uncooled outdoor enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC-DC step-down power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMZ31530RVQR | 3A, 4.5V–15V input, fixed 3.3V/5V/12V outputs; smaller 9mm × 11mm package; no PFM mode. | Limited to lower VIN range; lacks adjustable output and multi-mode control - suitable only for fixed-rail, space-constrained apps. | Select when output voltage is fixed and input never exceeds 15V; avoid if 8V–24V adjustability or 60V tolerance is required. |
| MPM3632C | 3A, 4.5V–28V input, 0.6V–12V output; 4mm × 4mm QFN; integrated inductor but no EXTVCC or RESET. | No thermal shutdown hysteresis or open-drain fault signaling; lacks hiccup-mode recovery - less robust in harsh environments. | Prefer for compact consumer-grade designs where cost and size outweigh industrial reliability needs. |
Compared with LMZ31530RVQR and MPM3632C, the MAXM17537ALY# uniquely combines 60V input tolerance, 8V–24V programmability, triple control modes, and comprehensive fault reporting - making it the only option qualified for high-voltage industrial point-of-load with full functional safety awareness.
Availability
The MAXM17537ALY# is available at Aetrix Electronics and suitable for test and measurement equipment, distributed supply regulation, and FPGA/DSP point-of-load applications requiring stable component supply, long-term manufacturability, and guaranteed RoHS-compliant sourcing.
Supply support for MAXM17537ALY# 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 high-performance analog and mixed-signal ICs for industrial, automotive, communications, and computing markets - emphasizing integration, reliability, and thermal efficiency.
The MAXM17537ALY# belongs to the Himalaya SiP power module family, engineered to replace complex discrete DC-DC designs with plug-and-play solutions that reduce design cycle time, PCB area, and qualification risk in demanding industrial power systems.
FAQ
What is the maximum output voltage supported by the MAXM17537ALY#?
The MAXM17537ALY# supports an adjustable output voltage range from 8V to 24V, set using an external resistor divider connected to the FB pin. The internal feedback reference is 0.9V (±1.5% over –40°C to +125°C), and the device maintains regulation accuracy and stability across this full range without requiring additional compensation components.
Does the MAXM17537ALY# require external compensation components?
No, the MAXM17537ALY# integrates full loop compensation, including a type-II network referenced to the CF pin. Only a 2.2pF capacitor between CF and FB is required - no external resistors or capacitors are needed for stability across the entire 8V–24V output range and load conditions.
How does the MODE/SYNC pin affect operation of the MAXM17537ALY#?
The MODE/SYNC pin on the MAXM17537ALY# latches the control mode at power-up: grounded = PWM (constant frequency), open = PFM (pulse-skipping for low IQ), tied to VCC = DCM (discontinuous conduction). It also accepts external clock signals (1.1×–1.4× fSW) for EMI synchronization, forcing PWM mode during sync operation.
Can the MAXM17537ALY# operate with an input voltage below 4.5V?
No, the MAXM17537ALY# has a specified minimum input voltage of 4.5V. Operation below this threshold is not guaranteed and may result in improper startup, regulation loss, or undefined behavior. The absolute maximum rating for IN-to-PGND is +65V, but functional operation is strictly limited to 4.5V–60V per datasheet specifications.
What thermal management provisions does the MAXM17537ALY# include?
The MAXM17537ALY# incorporates junction temperature monitoring with thermal shutdown at +165°C and 10°C hysteresis, plus hiccup-mode overload protection. Its 29-pin SiP package features three exposed thermal pads (EP1/EP2/EP3) designed to connect to a large internal PGND/SGND copper plane - achieving θJA = 24°C/W on a four-layer board.
MAXM17537ALY# Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Himalaya
- Package/Case:
- 29-PowerBLGA Module
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output 1:
- 8 ~ 24V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 3A
- 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:
- 29-SIP LGA (9x15)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MAXM17537ALY# FAQ
1.How can I place an order for MAXM17537ALY# through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXM17537ALY# 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 MAXM17537ALY# reliable?
The price and inventory of MAXM17537ALY# are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXM17537ALY# is usually 5 days.
3.What payment methods are accepted for MAXM17537ALY#?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXM17537ALY# transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXM17537ALY#?
MAXM17537ALY# orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXM17537ALY# 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 MAXM17537ALY#?
For technical support, including MAXM17537ALY# datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXM17537ALY# requirements.
6.How does Aetrix verify that MAXM17537ALY# is sourced from the original manufacturer or authorized distributors?
All MAXM17537ALY# 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 MAXM17537ALY# meets industry standards.
7.What is the process for return or replacement of MAXM17537ALY#?
All MAXM17537ALY# units undergo pre-shipment inspection (PSI). If there is an issue with MAXM17537ALY#, 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 MAXM17537ALY# part is unused and in its original packaging.
Return procedure for MAXM17537ALY#:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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