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Analog Devices Inc./Maxim Integrated MAXM17552AMB+T
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- Part No.:
- MAXM17552AMB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- DC DC Converters
- Package:
- 10-SMD Module
- Datasheet:
-
MAXM17552AMB+T.pdf
- Description:
- DC DC CONVERTER 0.9-5.5V
- Quantity:
- Payment:
- Shipping:
Inventory:4,035
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Product details
Overview
MAXM17552AMB+T from Maxim Integrated is a compact, synchronous step-down DC-DC power module integrating controller, MOSFETs, compensation, and inductor. It operates from 4V to 60V input, delivers up to 100mA at adjustable 0.9V–5.5V output, features ±1.75% feedback accuracy, peak-current-mode control, and 5.1ms default soft-start. It serves as an LDO replacement in industrial sensors and 4mA–20mA loop-powered systems.
For engineers reviewing the MAXM17552AMB+T datasheet, MAXM17552AMB+T pinout, MAXM17552AMB+T application, or MAXM17552AMB+T equivalent, key selection criteria include input voltage range (4–60V), output current capability (100mA), feedback voltage tolerance (±1.75%), thermal shutdown threshold (+160°C), and uSLIC package compatibility with high-density PCB layouts.
Technical Context
The MAXM17552AMB+T employs internally compensated peak-current-mode control with fixed-frequency PWM or light-load PFM operation selectable via MODE pin. Its architecture includes cycle-by-cycle current limiting, hiccup-mode overcurrent protection, and open-drain RESET output with 92–95% FB threshold hysteresis.
It supports programmable switching frequency (100–900kHz) via RT/SYNC resistor, external clock synchronization (up to 900kHz), and monotonic startup into pre-biased outputs. The device maintains stable regulation across -40°C to +125°C ambient temperature with junction-to-ambient thermal resistance of 30.6°C/W on a four-layer board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 60V - supports wide industrial and battery-derived supplies without external pre-regulation. |
| Output Current | Up to 100mA - sufficient for low-power microcontrollers, sensors, and analog front-ends. |
| Feedback Accuracy | ±1.75% over -40°C to +125°C - ensures tight output regulation across full operating temperature range. |
| Soft-Start Time | 5.1ms (default, no capacitor) - prevents inrush current during power-up; adjustable via SS pin. |
| Switching Frequency | 100kHz to 900kHz - programmable for EMI optimization or efficiency tuning per load condition. |
| Shutdown Current | 1.2μA (typ) - enables ultra-low-power standby in battery-operated equipment. |
| Thermal Shutdown | +160°C with 20°C hysteresis - protects internal FETs and inductor under sustained overload or poor heatsinking. |
Pinout & Package
The MAXM17552AMB+T is housed in a 10-pin, 2.6mm × 3mm × 1.5mm uSLIC™ package - low-profile, surface-mount, RoHS-compliant, with integrated inductor and optimized thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX | Switching node | High-impedance during shutdown; connects directly to internal high-side pMOSFET and low-side nMOSFET; no external components allowed. |
| GND | Power ground | Primary return path for input/output currents; must connect to single-point power ground plane per layout guidelines. |
| MODE | PFM/PWM mode select | Ground for forced-PWM; floating for automatic PFM at light loads - determines efficiency vs. noise trade-off. |
| RESET | Open-drain power-good output | Pulls low when FB falls below 92% of set value; asserts high 2ms after FB rises above 95% - enables system sequencing and fault monitoring. |
| OUT | Regulated output | Delivers final DC output; requires ceramic capacitor to GND for stability and transient response. |
| FB | Feedback input | Connects to resistor divider between OUT and GND to set output voltage; ±1.75% reference accuracy enables precise regulation. |
| SS | Soft-start control | Accepts external capacitor to GND for adjustable ramp time; internal 5μA current source sets timing - ensures monotonic startup. |
| RT/SYNC | Oscillator timing & sync input | Resistor-to-GND sets fSW (100–900kHz); AC-coupled external clock synchronizes switching - critical for noise-sensitive systems. |
| EN/UVLO | Enable/undervoltage lockout | Active-high logic input; rising threshold 1.25V (typ); configurable UVLO via resistor divider - enables input voltage supervision and controlled enable. |
| IN | Input power supply | Accepts 4–60V DC; requires local 2.2µF ceramic bypass capacitor near pin - minimizes input ripple and EMI. |
Key Features
| Feature | Design Value |
|---|---|
| All-ceramic capacitor support | Eliminates electrolytic or tantalum capacitors - improves reliability, lifetime, and temperature stability in harsh environments. |
| Internally compensated control | Removes need for external compensation network - reduces BOM count and design validation effort for stable operation. |
| Pre-biased output startup | Prevents reverse current flow during power-up into existing rail voltage - essential for multi-rail digital systems with staggered sequencing. |
| CISPR22 Class B compliance | Meets conducted and radiated emissions limits without external filtering - simplifies EMC certification for industrial end equipment. |
| Hiccup-mode overcurrent protection | Enables safe, self-recovering short-circuit handling - avoids thermal runaway and allows continued operation after fault clearance. |
Applications
| Industrial Sensors and Encoders | 4mA–20mA Current-Loop Powered Sensors |
|---|---|
Use Scenario: Powering rotary encoders and pressure transmitters in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Primary 3.3V or 5V point-of-load regulator converting 24V loop supply to sensor logic rail. Use Value: Wide 4–60V input accommodates loop voltage variation; 100mA output supports active signal conditioning circuitry. | Use Scenario: Supplying analog front-end and ADC in loop-powered field instruments with limited headroom. IC Role / Device Role / Timing Role: Efficient step-down converter replacing linear regulators to minimize power dissipation within 4–20mA loop constraints. Use Value: 1.2μA shutdown current extends battery life; PFM mode maintains >85% efficiency at sub-10mA loads. |
| LDO Replacement | HVAC and Building Control |
Use Scenario: Replacing inefficient 78L05-style LDOs in legacy building controllers with higher input voltages. IC Role / Device Role / Timing Role: High-efficiency alternative delivering regulated 5V from 12–48V HVAC bus rails. Use Value: 90%+ efficiency at 100mA eliminates heat sink requirement; uSLIC footprint matches common SOIC-8 LDO land patterns. | Use Scenario: Powering wireless sensor nodes and actuator drivers in smart thermostats and zone controllers. IC Role / Device Role / Timing Role: Compact, thermally robust DC-DC stage supplying MCU, RF transceiver, and interface ICs. Use Value: -40°C to +125°C ambient rating ensures reliability in unconditioned mechanical rooms; drop/shock/vibration qualified per JESD22-B103/B104. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down power module applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAXM15462AMB+T | Lower 3.5–36V input range; 600mA output; same uSLIC-10 package; ±1.5% FB accuracy. | Suitable for higher-current applications like industrial IO-Link masters where >100mA is required. | Select MAXM15462AMB+T only if output current >100mA is needed; not a direct substitute due to different input range and current rating. |
| LMZ31503RNT | 3–15V input; 3A output; 5mm × 5.5mm QFN; external compensation; no PFM mode. | Better suited for high-current, cost-sensitive applications where board space is less constrained than in sensor nodes. | Choose LMZ31503RNT when >100mA output and lower BOM cost outweigh compact size and PFM efficiency benefits of MAXM17552AMB+T. |
Compared with MAXM15462AMB+T and LMZ31503RNT, the MAXM17552AMB+T uniquely balances ultra-wide 4–60V input, 100mA capability, and minimal 2.6mm × 3mm footprint - making it optimal for space-constrained, high-voltage industrial sensors where efficiency at light loads matters.
Availability
MAXM17552AMB+T is available at Aetrix Electronics and suitable for industrial sensors and encoders, 4mA–20mA loop-powered devices, and HVAC/building control systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MAXM17552AMB+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, automotive, and communications markets.
The MAXM17552AMB+T belongs to the Himalaya power module family, engineered to replace discrete buck converters and LDOs in space- and thermal-constrained applications with integrated, validated, and EMC-compliant solutions.
FAQ
What is the maximum output current capability of the MAXM17552AMB+T?
The MAXM17552AMB+T delivers up to 100mA of continuous output current across its full operating temperature range (-40°C to +125°C ambient). This is confirmed in the Electrical Characteristics table under "VOUT Current-Limit" with ISOURCE-LIMIT = 100mA (min) and 178mA (max) - the 100mA value represents guaranteed minimum output current before current-limit activation. Derating may apply at elevated temperatures or high input-output differentials.
Does the MAXM17552AMB+T support external clock synchronization?
Yes, the MAXM17552AMB+T supports external clock synchronization via the RT/SYNC pin. An external clock signal (10–70% duty cycle, logic high >3V, low <0.5V) can be AC-coupled through a 47pF capacitor to synchronize the internal oscillator up to 900kHz. The internal RT resistor must be selected to set the free-running frequency ~10% lower than the external clock frequency for reliable locking.
What is the feedback voltage accuracy of the MAXM17552AMB+T over temperature?
The MAXM17552AMB+T provides ±1.75% feedback voltage accuracy over the full -40°C to +125°C ambient operating temperature range. This specification is explicitly stated in the General Description and verified in the Electrical Characteristics table under "FB Regulation Voltage" (VFB-REG), where min/typ/max values are given for both MODE = OPEN and MODE = GND configurations.
Can the MAXM17552AMB+T start up into a pre-biased output voltage?
Yes, the MAXM17552AMB+T supports monotonic startup into a pre-biased output. During startup, both high-side and low-side FETs remain off until the first PWM pulse is commanded, preventing reverse current flow from the pre-charged output rail. This behavior is documented in the "Startup Into a Pre-biased Output" section and validated in typical waveforms (toc12, toc13).
What package type and dimensions does the MAXM17552AMB+T use?
The MAXM17552AMB+T uses a 10-pin uSLIC™ package measuring 2.6mm × 3mm × 1.5mm. This is confirmed in the "Package Information" section and Pin Configuration diagram. The package code is M102A3+1, outline number 21-100094, and land pattern number 90-100027 - all referenced in the official Maxim datasheet Rev 3.
MAXM17552AMB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-SMD Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Non-Isolated PoL Module
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 60V
- Voltage - Output 1:
- 0.9 ~ 5.5V
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- 100mA
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- ITE (Commercial)
- Features:
- OCP, OTP, SCP, UVLO
- Operating Temperature:
- -40°C ~ 125°C
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-eMGA (3x2.6)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MAXM17552AMB+T FAQ
1.How can I place an order for MAXM17552AMB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXM17552AMB+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 MAXM17552AMB+T reliable?
The price and inventory of MAXM17552AMB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXM17552AMB+T is usually 5 days.
3.What payment methods are accepted for MAXM17552AMB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXM17552AMB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXM17552AMB+T?
MAXM17552AMB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXM17552AMB+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 MAXM17552AMB+T?
For technical support, including MAXM17552AMB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXM17552AMB+T requirements.
6.How does Aetrix verify that MAXM17552AMB+T is sourced from the original manufacturer or authorized distributors?
All MAXM17552AMB+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 MAXM17552AMB+T meets industry standards.
7.What is the process for return or replacement of MAXM17552AMB+T?
All MAXM17552AMB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAXM17552AMB+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 MAXM17552AMB+T part is unused and in its original packaging.
Return procedure for MAXM17552AMB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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