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Analog Devices Inc./Maxim Integrated MAX17552BATB+T
- Part No.:
- MAX17552BATB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX17552BATB+T.pdf
- Description:
- IC REG BUCK ADJ 100MA 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,470
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Product details
Overview
The MAX17552BATB+T from Analog Devices is a Himalaya-series synchronous step-down DC-DC converter with integrated high-side pMOS and low-side nMOS FETs, operating from 4V to 60V input and delivering up to 100mA at 0.8V–0.9×VIN output voltage with ±1.75% regulation accuracy over –40°C to +125°C. It features peak-current-mode control, programmable 100kHz–2.2MHz switching frequency, 22µA no-load supply current in PFM mode, and operates in a compact 10-pin 3mm × 2mm TDFN package.
For engineers reviewing the MAX17552BATB+T datasheet, MAX17552BATB+T pinout, MAX17552BATB+T application, or MAX17552BATB+T equivalent, key selection considerations include its ultra-low quiescent current for battery-powered sensors, wide input range for industrial 24V/48V rails, PFM/PWM mode flexibility for light-load efficiency vs. EMI control, and built-in RESET monitoring for system-level power sequencing.
Technical Context
The MAX17552BATB+T implements a peak-current-mode control architecture with internal slope compensation and an error amplifier comparing FB voltage to a 0.8V reference. Its MODE pin selects between forced-PWM (constant frequency, negative inductor current allowed) and PFM (pulse-skipping, zero-negative-current, 22µA IQ) operation-switchable dynamically during runtime.
It integrates protection features including cycle-by-cycle peak-current limiting (210mA typ), thermal shutdown at 160°C, monotonic startup into prebiased outputs, and open-drain RESET with 95% rising / 92% falling thresholds. The EN/UVLO pin supports programmable turn-on threshold (1.25V typ rising), and RT/SYNC enables external clock synchronization up to 2.2MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4V to 60V - supports wide industrial and automotive supply rails without pre-regulation. |
| Output Current | Up to 100mA - sufficient for powering microcontrollers, sensors, and analog front-ends in space-constrained systems. |
| No-Load Supply Current | 22µA in PFM mode - enables multi-year battery life in always-on IoT sensor nodes. |
| Feedback Accuracy | ±1.75% over –40°C to +125°C - ensures stable output under harsh ambient conditions without external trimming. |
| Switching Frequency Range | 100kHz to 2.2MHz - allows optimization of inductor size (higher fSW → smaller L) and EMI compliance (lower fSW → easier filtering). |
| Protection Features | Cycle-by-cycle current limit, thermal shutdown (160°C), and open-drain RESET - provides robust fault handling without external supervision circuitry. |
| Package | 10-pin TDFN (3mm × 2mm) - enables ultra-compact PCB layout with minimal thermal resistance (θJA = 67.3°C/W). |
Pinout & Package
MAX17552BATB+T is housed in a 10-pin, 3mm × 2mm TDFN package with exposed pad (EP) connected to GND. Pin numbering follows standard top-view orientation with pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power Input | Bypassed with 1µF X7R ceramic capacitor; withstands 70V absolute max, enabling use with transient-prone industrial supplies. |
| 2 EN/UVLO | Enable & UVLO Input | Active-high logic with 1.25V rising threshold; resistor divider enables precise input-voltage turn-on (e.g., 24V system start at 22V). |
| 3 RT/SYNC | Oscillator Timing / Sync Input | Resistor sets fSW (100kHz–2.2MHz); accepts external clock via AC coupling for synchronized multi-rail systems. |
| 4 SS | Soft-Start Control | Capacitor sets ramp time (default 5.1ms); prevents inrush current into downstream capacitors and avoids output overshoot. |
| 5 FB | Feedback Input | Connects to resistor divider from VOUT; regulates output to 0.8V reference with ±1.75% tolerance across full temperature range. |
| 6 VOUT | External Bias Input | Decoupled with 0.22µF cap; connects via 22.1Ω resistor to output for 3.3V–5V designs to improve transient response and stability. |
| 7 RESET | Open-Drain Output | Pulls low when FB drops below 92% of setpoint; 2ms delay on release ensures clean power-good assertion after regulation is restored. |
| 8 MODE | PFM/PWM Selection | Unconnected = PFM (high light-load efficiency); grounded = forced-PWM (fixed frequency, EMI-controlled operation). |
| 9 GND | Ground Reference | Single-point connection point for all grounds; EP must be soldered to GND plane for optimal thermal and electrical performance. |
| 10 LX | Switch Node | Connects to inductor switch node; high-impedance in shutdown; supports ±1.6A RMS current handling per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous MOSFET Integration | Eliminates external Schottky diode and reduces BOM count; achieves >90% peak efficiency with internal 1.5Ω/0.8Ω RDS(on) FETs. |
| Programmable Soft-Start | Prevents output overshoot and limits inrush current during power-up; default 5.1ms internal timing avoids need for external capacitor in basic designs. |
| PFM Mode Efficiency | 22µA no-load IQ enables >85% efficiency at 1mA load-critical for energy-harvesting and battery-backed applications. |
| CISPR 32 Class B Compliance | Meets conducted and radiated EMI limits without additional shielding or complex filter design, reducing certification risk and time-to-market. |
| Monotonic Startup into Prebiased Output | Ensures safe power-up when VOUT is already biased (e.g., by backup rail), preventing reverse current flow or latch-up in multi-supply systems. |
Applications
| Industrial Sensors and Process Control | 4mA–20mA Current-Loop Powered Sensors |
|---|---|
Use Scenario: Powering loop-powered pressure/temperature transmitters in factory automation cabinets with 24V DC rails subject to load dumps and surges. IC Role / Device Role / Timing Role: Primary DC-DC regulator converting 24V–48V supply to stable 3.3V/5V for signal conditioning and ADC/MCU subsystems. Use Value: 60V input rating tolerates 48V transients; ±1.75% output accuracy maintains sensor measurement integrity across temperature extremes. | Use Scenario: Self-powered field sensors deriving energy directly from 4mA–20mA loop current, requiring ultra-low-quiescent conversion. IC Role / Device Role / Timing Role: High-efficiency buck converter operating in PFM mode to maximize usable loop current for sensing and wireless transmission. Use Value: 22µA no-load IQ leaves >1.5mA available for sensor operation and RF transmission within 4mA minimum loop compliance. |
| High-Voltage LDO Replacement | Battery-Powered Equipment |
Use Scenario: Replacing inefficient linear regulators in 36V or 48V industrial equipment where heat dissipation and efficiency are critical. IC Role / Device Role / Timing Role: Efficient step-down regulator delivering 3.3V/5V from high-input rails without heatsinks or airflow requirements. Use Value: >90% peak efficiency reduces thermal load by >80% versus LDOs; eliminates derating concerns in sealed enclosures. | Use Scenario: Power management for portable test instruments, handheld meters, or remote data loggers using primary Li-SOCl₂ or alkaline cells. IC Role / Device Role / Timing Role: Primary system regulator supporting deep-sleep modes with fast wake-up and monotonic startup into precharged rails. Use Value: 1.2µA shutdown current extends shelf life; RESET output enables reliable brown-out detection and controlled MCU reset sequencing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QDDARQ1 | Automotive-grade AEC-Q100 qualified; 3V–65V input; 150mA output; requires external compensation; higher IQ (45µA) | Targeted for automotive body electronics; lacks integrated soft-start and RESET output | Select for automotive environments requiring qualification; avoid if RESET monitoring or fixed soft-start is required. |
| TPS54202DRCT | 2.5V–60V input; 2A output; 2.5MHz max fSW; 45µA IQ; no PFM mode; requires external FETs | Higher-power PoL applications; not suitable for ultra-low-IQ or space-constrained designs | Choose only when >100mA output or faster transient response is needed; adds complexity and board area. |
Compared with LM5164QDDARQ1 and TPS54202DRCT, the MAX17552BATB+T delivers superior light-load efficiency (22µA vs. ≥45µA), integrated RESET and soft-start, and smaller footprint-making it optimal for industrial sensors and battery-constrained edge devices where size, IQ, and functional integration are prioritized over automotive qualification or high output current.
Availability
MAX17552BATB+T is available at Aetrix Electronics and suitable for industrial sensors and process control, 4mA–20mA current-loop powered sensors, high-voltage LDO replacement, and battery-powered equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX17552BATB+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 is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The MAX17552BATB+T belongs to the Himalaya power portfolio, designed specifically for cooler, smaller, and simpler industrial and sensor power solutions-emphasizing ultra-low IQ, wide VIN, and integrated protection in miniature packages.
FAQ
What is the maximum input voltage rating for the MAX17552BATB+T?
The MAX17552BATB+T has an absolute maximum input voltage rating of +70V on the IN pin, with guaranteed operational range from 4V to 60V. This 60V upper limit ensures reliable performance in industrial 48V systems and accommodates common transients such as load dump events without requiring external clamping circuitry. Operation beyond 60V is not specified and may compromise reliability or regulation accuracy.
Does the MAX17552BATB+T support external clock synchronization?
Yes, the MAX17552BATB+T supports external clock synchronization via the RT/SYNC pin. An AC-coupled external clock signal can be applied to synchronize the internal oscillator to a system master clock-enabling noise reduction in multi-rail systems and deterministic EMI behavior. The SYNC input accepts frequencies up to 2.2MHz and requires a minimum off-time of 40ns between pulses, as specified in the Electrical Characteristics table.
How does the MODE pin affect efficiency and EMI performance in the MAX17552BATB+T?
When the MODE pin is left unconnected, the MAX17552BATB+T operates in PFM mode-skipping pulses at light loads to achieve 22µA no-load IQ and >85% efficiency at 1mA. When grounded, it enters forced-PWM mode-maintaining constant switching frequency (e.g., 220kHz or 600kHz) for predictable EMI filtering but increasing light-load IQ to ~245µA. This trade-off allows designers to prioritize battery life (PFM) or EMI compliance (PWM) based on application needs.
What is the purpose of the VOUT pin on the MAX17552BATB+T, and how should it be configured?
The VOUT pin on the MAX17552BATB+T provides external bias to internal control circuitry to improve transient response and stability. For output voltages between 3.3V and 5V, it must be decoupled with a 0.22µF capacitor and connected to the output capacitor's positive terminal through a 22.1Ω resistor. For outputs <3.3V or >5V, it is connected directly to GND. Incorrect configuration degrades load-step response and may cause instability in feedback loop performance.
Can the MAX17552BATB+T safely start up when the output is already prebiased?
Yes, the MAX17552BATB+T supports monotonic startup into a prebiased output-a critical feature for redundant or multi-rail systems. During startup, the device prevents reverse current flow by controlling gate drive timing and disabling the low-side FET until the internal reference ramps up. This behavior is verified in Figure 42 and Figure 43 of the datasheet and ensures safe power sequencing without external diodes or OR-ing controllers.
MAX17552BATB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-WFDFN 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):
- 4V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 54V
- Current - Output:
- 100mA
- Frequency - Switching:
- 100kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN-EP (2x3)
MAX17552BATB+T FAQ
1.How can I place an order for MAX17552BATB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17552BATB+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 MAX17552BATB+T reliable?
The price and inventory of MAX17552BATB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17552BATB+T is usually 5 days.
3.What payment methods are accepted for MAX17552BATB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17552BATB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17552BATB+T?
MAX17552BATB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17552BATB+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 MAX17552BATB+T?
For technical support, including MAX17552BATB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17552BATB+T requirements.
6.How does Aetrix verify that MAX17552BATB+T is sourced from the original manufacturer or authorized distributors?
All MAX17552BATB+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 MAX17552BATB+T meets industry standards.
7.What is the process for return or replacement of MAX17552BATB+T?
All MAX17552BATB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17552BATB+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 MAX17552BATB+T part is unused and in its original packaging.
Return procedure for MAX17552BATB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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