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Analog Devices Inc./Maxim Integrated MAXM17720AMB+T
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- Part No.:
- MAXM17720AMB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- DC DC Converters
- Package:
- 10-SMD Module
- Datasheet:
-
MAXM17720AMB+T.pdf
- Description:
- MAXM17712 4.5V TO 60V INPUT 150M
- Quantity:
- Payment:
- Shipping:
Inventory:3,073
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Product details
Overview
The MAXM17720AMB+T from Analog Devices is a dual-output Himalaya uSLIC power module integrating a 4V–60V input, 150mA synchronous step-down DC-DC converter with fixed 5V output and a 50mA high-PSRR linear regulator delivering 3.3V output. It operates across –40°C to +125°C ambient, features internal inductor and compensation, and targets space-constrained industrial sensor and PLC power rails.
For engineers reviewing the MAXM17720AMB+T datasheet, MAXM17720AMB+T pinout, MAXM17720AMB+T application, or MAXM17720AMB+T equivalent, key selection considerations include its 5V/150mA buck + 3.3V/50mA LDO architecture, 5.1ms buck soft-start, ±2% FB accuracy, 610kHz default switching frequency, and 10-pin uSLIC (2.6mm × 3mm × 1.5mm) package with integrated thermal protection.
Technical Context
The MAXM17720AMB+T employs peak-current-mode control for its step-down converter and uses an internal 47μH inductor with all-ceramic external capacitors. Its buck output (5V) directly powers the linear regulator, which delivers regulated 3.3V with ±1.33% accuracy and 200–450mV dropout at 50mA.
It supports selectable PWM or PFM operation via the MODE/SYNC pin, offers programmable switching frequency (350kHz–2.2MHz) using the RT pin, and integrates open-drain RESET monitoring of both buck and LDO outputs with 2.1ms delay after regulation is achieved.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 60V - enables direct connection to industrial 12V/24V/48V rails and battery stacks without pre-regulation. |
| Buck Output Voltage | Fixed 5.0V ±2% - eliminates external feedback resistors and simplifies layout for stable 5V rail generation. |
| LDO Output Voltage | Fixed 3.3V ±1.33% - supplies noise-sensitive logic (e.g., microcontrollers, ADCs) with high PSRR and low ripple. |
| Max Output Currents | 150mA (buck), 50mA (LDO) - supports dual-rail loads like sensor signal chains and low-power MCU peripherals. |
| Switching Frequency | Default 610kHz (adjustable 350kHz–2.2MHz) - balances efficiency, EMI, and component size; PFM mode disabled above 900kHz. |
| Soft-Start Time | Buck: 5.1ms typ, LDO: 1.1ms typ - prevents inrush current during power-up and ensures controlled rail sequencing. |
| Quiescent Current | 70μA (PFM no-load), 2.5μA shutdown - extends battery life in always-on or low-duty-cycle equipment. |
| Operating Temperature | –40°C to +125°C ambient - qualified for harsh industrial environments including HVAC and factory automation. |
Pinout & Package
Package: 10-pin uSLIC™ (2.6mm × 3mm × 1.5mm), RoHS-compliant, land pattern per Maxim/Analog Devices document 90-100027.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX | Switching node | Internal connection to high-side/low-side MOSFETs; no external components allowed - critical for EMI control and reliability. |
| GND | Power ground reference | Must connect to single-point ground plane; serves as return path for buck, LDO, and control circuitry. |
| MODE/SYNC | Mode selection & clock sync | Ground for forced PWM; floating for PFM; accepts external clock (1.1×–1.4× fSW) for system-level timing alignment. |
| RESET | Open-drain power-good indicator | Pulled high externally; asserts low if FB <92% or OUTL <91.5% of setpoint - used for system reset or fault logging. |
| OUTB | Buck output / LDO input | Delivers 5V to load and feeds LDO; requires ≥10μF ceramic capacitor to GND for stability and transient response. |
| OUTL | LDO output | Provides clean 3.3V; requires ≥2.2μF ceramic capacitor to GND - enables low-noise analog and digital supply separation. |
| FB | Buck feedback input | Internally connected to 5V output (fixed-voltage variant); no external divider needed - reduces BOM and layout risk. |
| RT | Frequency programming | Resistor-to-GND sets fSW (350kHz–2.2MHz); unconnected = 610kHz default - allows EMI tuning without changing layout. |
| EN/UVLO | Enable & input UVLO control | 1.215V threshold; resistor divider from IN sets turn-on voltage (min 4V); disables entire module below threshold. |
| IN | Buck input supply | Accepts 4V–60V; requires 1μF X7R ceramic decoupling capacitor close to pin - essential for input ripple suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated inductor & compensation | Eliminates 3–5 external components (inductor, compensation caps/resistors), reducing design time and board area by >40%. |
| High-PSRR linear regulator | Rejects >60dB of buck switching noise at 100kHz - preserves signal integrity for precision ADCs and RF front-ends. |
| Hiccup overcurrent protection | Auto-retries after 51ms timeout during sustained overload - protects against short circuits without latch-off or manual reset. |
| Prebias startup capability | Enables safe soft-start into precharged output rails - critical for multi-rail systems where sequencing must avoid backfeeding. |
| CISPR22 Class B compliance | Meets conducted/radiated EMI limits without external shielding or ferrites - accelerates EMC certification for industrial end-equipment. |
| Robust thermal protection | Shuts down at +160°C junction, restarts after 20°C hysteresis - prevents thermal runaway in enclosed or high-ambient deployments. |
Applications
| Industrial Sensors | Programmable Logic Controllers |
|---|---|
Use Scenario: Powering MEMS pressure sensors and 4–20mA transmitters in oil/gas field instrumentation. IC Role / Device Role / Timing Role: Dual-rail power source: 5V for analog front-end and 3.3V for low-power Cortex-M0+ MCU and SPI interface. Use Value: Internal inductor and wide 4V–60V input tolerate battery voltage sag and 24V loop-powered fluctuations without derating. |
Use Scenario: Supplying I/O modules and communication interfaces (RS-485, CAN) in modular PLC backplanes. IC Role / Device Role / Timing Role: Primary local regulator generating isolated 5V and 3.3V rails from 24V DC bus. Use Value: 125°C ambient rating and hiccup OCP ensure continuous operation during cabinet temperature spikes and shorted field wiring. |
| Battery-Powered Equipment | HVAC and Building Control |
Use Scenario: Power management for wireless environmental monitors (CO₂, humidity) with Li-ion or AA-cell batteries. IC Role / Device Role / Timing Role: Efficient dual-output regulator enabling ultra-low quiescent current (70μA) in sleep mode and fast wake-up via EN/UVLO. Use Value: PFM mode boosts light-load efficiency; 2.5μA shutdown current extends shelf life and runtime between charges. |
Use Scenario: Distributed power for smart thermostats, damper actuators, and occupancy sensors in commercial HVAC networks. IC Role / Device Role / Timing Role: Compact, rugged DC-DC + LDO solution replacing discrete buck + LDO designs on space-limited PCBs. Use Value: uSLIC package (2.6mm × 3mm) fits tight enclosures; drop/shock/vibration qualification meets JESD22-B103/B104 standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAXM17715AMB+T | Same 5V buck + 3.3V LDO, but fixed 3.3V LDO output (vs. MAXM17720's 3.3V LDO) - identical electrical specs and pinout. | No functional difference; MAXM17715 and MAXM17720 share identical LDO output voltage (3.3V) and performance. | Select MAXM17715AMB+T only if cross-reference or legacy BOM mandates that specific part number; otherwise MAXM17720AMB+T is functionally identical. |
| TPSM84205RKGR | TI 5V/2A buck-only module (no integrated LDO); requires external LDO for 3.3V rail; larger 5.5mm × 5.5mm QFN package. | Suitable when higher buck current (>150mA) is needed, but adds complexity, cost, and board area for separate LDO and filtering. | Choose TPSM84205RKGR only if >150mA buck current is required and board space permits external LDO integration. |
Compared with MAXM17715AMB+T, the MAXM17720AMB+T offers identical functionality and pin compatibility, while TPSM84205RKGR provides higher buck current but lacks integrated LDO functionality - requiring additional components, layout effort, and validation for dual-rail noise isolation.
Availability
MAXM17720AMB+T is available at Aetrix Electronics and suitable for industrial sensors, programmable logic controllers, and battery-powered equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAXM17720AMB+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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAXM17720AMB+T belongs to the Himalaya uSLIC power module family, designed to replace complex discrete DC-DC + LDO solutions with fully integrated, compact, and EMC-robust power subsystems for space- and reliability-critical industrial applications.
FAQ
What is the exact output voltage configuration of the MAXM17720AMB+T?
The MAXM17720AMB+T delivers a fixed 5.0V output from its integrated step-down converter and a fixed 3.3V output from its internal linear regulator. This dual-rail configuration is confirmed in the datasheet's Ordering Information and Electrical Characteristics tables, where MAXM17715–MAXM17720 variants are explicitly defined as having fixed 5V buck output and LDO outputs ranging from 1.2V to 3.3V - with MAXM17720 specifying 3.3V.
Does the MAXM17720AMB+T require external compensation components?
No, the MAXM17720AMB+T does not require external compensation components. Its step-down converter and linear regulator each feature internal compensation circuits, as stated in the Detailed Description section. This eliminates the need for external RC networks, simplifying design, improving stability margin, and reducing bill-of-materials count.
Can the MAXM17720AMB+T operate with a prebiased output voltage?
Yes, the MAXM17720AMB+T supports startup into a prebiased output without discharging the output capacitor, in both PFM and forced-PWM modes. This capability is explicitly documented in the "Startup Into a Prebiased Step-Down Converter Output" subsection and is essential for reliable power sequencing in multi-rail systems containing FPGAs or microcontrollers with strict voltage ramp requirements.
What is the maximum allowable switching frequency when operating the MAXM17720AMB+T in PFM mode?
The maximum allowable switching frequency for PFM operation of the MAXM17720AMB+T is 900kHz. This limit is specified in the "Switching Frequency (RT)" section of the datasheet. Exceeding 900kHz forces the device into PWM mode regardless of MODE/SYNC pin state, ensuring predictable light-load efficiency behavior.
How does the RESET pin of the MAXM17720AMB+T behave during power-up and fault conditions?
The RESET pin of the MAXM17720AMB+T is an open-drain output that goes high-impedance 2.1ms after both FB and OUTL reach ≥95% of their nominal values. It pulls low within 4μs if FB falls below 92% or OUTL falls below 91.5% of setpoint, or if EN/UVLO drops below its 1.09V falling threshold - providing precise, independent monitoring of both regulated outputs.
MAXM17720AMB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Himalaya
- Package/Case:
- 10-SMD Module
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output 1:
- -
- Voltage - Output 2:
- -
- Voltage - Output 3:
- -
- Voltage - Output 4:
- -
- Current - Output (Max):
- -
- Power (Watts):
- -
- Voltage - Isolation:
- -
- Applications:
- -
- Features:
- -
- Operating Temperature:
- -
- Efficiency:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-eMGA (3x2.6)
- Control Features:
- -
- Approval Agency:
- -
- Standard Number:
- -
MAXM17720AMB+T FAQ
1.How can I place an order for MAXM17720AMB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAXM17720AMB+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 MAXM17720AMB+T reliable?
The price and inventory of MAXM17720AMB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAXM17720AMB+T is usually 5 days.
3.What payment methods are accepted for MAXM17720AMB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAXM17720AMB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAXM17720AMB+T?
MAXM17720AMB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAXM17720AMB+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 MAXM17720AMB+T?
For technical support, including MAXM17720AMB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAXM17720AMB+T requirements.
6.How does Aetrix verify that MAXM17720AMB+T is sourced from the original manufacturer or authorized distributors?
All MAXM17720AMB+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 MAXM17720AMB+T meets industry standards.
7.What is the process for return or replacement of MAXM17720AMB+T?
All MAXM17720AMB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAXM17720AMB+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 MAXM17720AMB+T part is unused and in its original packaging.
Return procedure for MAXM17720AMB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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