MAX17552B

60V, 100mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter with 22μA No-Load Supply Current

60V, Low I_Q Synchronous Buck Regulator Enables High Efficiency

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Overview

Features and Benefits
Product Details

Features and Benefits

Eliminates External Components and Reduces Total Cost
- No Schottky—Synchronous Operation for High Efficiency and Reduced Cost
- Internal Compensation
- Fixed Internal 5.1ms or Programmable Soft-Start
- All-Ceramic Capacitors, Ultra-Compact Layout
Reduces Number of DC-DC Regulators to Stock
- Wide 4V to 60V Input Voltage Range
- Adjustable 0.8V to 0.9 x V_IN Output Voltages
- Delivers Up to 100mA Load Current
- 100kHz to 2.2MHz Adjustable Switching Frequency Range with External Clock Synchronization
- Configurable Between PFM and Forced-PWM Modes
Reduces Power Dissipation
- 22µA No Load Supply Current
- Peak Efficiency > 90%
- PFM Feature for High Light-Load Efficiency
- 1.2µA (typ) Shutdown Current
Operates Reliably in Adverse Industrial Environments
- Peak Current-Limit Protection
- Built-In Output-Voltage Monitoring with Open-Drain Active-Low RESET Pin
- Programmable EN/UVLO Threshold
- Complies with CISPR32 (EN55032) Class B Conducted and Radiated Emissions
- Monotonic Startup into Prebiased Output
- Overtemperature Protection
- Wide -40°C to +125°C Ambient Operating Temperature Range / -40°C to +150°C Junction Temperature Range

Product Details

The Himalaya series of voltage regulator ICs, power modules, and chargers enable cooler, smaller, and simpler power-supply solutions. The MAX17552/ MAX17552A/MAX17552B high-efficiency, high-voltage, Himalaya synchronous step-down DC-DC converters with integrated MOSFETs operate over a 4V to 60V input voltage range.. The converters can deliver output current up to 100mA at output voltages of 0.8V to 0.9 x V_IN. The output voltage is accurate to within ±1.75% over the -40°C to +125°C temperature range.

The devices employ a peak-current-mode control architecture with a MODE pin that can be used to operate the device in pulse-width modulation (PWM) or pulse-frequency modulation (PFM) control schemes. PWM operation provides constant frequency operation at all loads and is useful in applications sensitive to variable switching frequency. PFM operation disables negative inductor current and additionally skips pulses at light loads for high efficiency. The converters consume only 22µA of no-load supply current in PFM mode. The low-resistance, on-chip MOSFETs ensure high efficiency at full load and simplify PCB layout.

The devices offer programmable switching frequency to optimize solution size and efficiency. Programmable softstart allows the user to reduce the inrush currents. During overload, the MAX17552 implements a hysteretic cycle-by-cycle peak-current-limit protection scheme, while the MAX17552A/MAX17552B implements a HICCUP-type overload protection scheme to protect the inductor and the internal FETs. An EN/UVLO pin allows the user to turn on/off the device at the desired input-voltage level. An open-drain active-low RESET pin allows output-voltage monitoring. The devices operate over the -40°C to +125°C industrial temperature range and is available in a compact 10-pin (3mm x 2mm) TTDFN/TDFN-CU and 10-pin (3mm x 3mm) µMAX^® packages. Simulation models are available.

Applications

4–20mA Current-Loop Powered Sensors
Battery-Powered Equipment
General-Purpose Point-of-Load
High-Voltage LDO Replacement
HVAC and Building Control
Industrial Sensors and Process Control

Product Categories

Power Management

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Product Lifecycle Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (3)

MAX17552AEVKIT

Evaluation Kit for the MAX17552A (TDFN) in 5V Output Voltage Applications

MAX17552ATBEVKIT

Evaluation Kit for the MAX17552 (TDFN) in 5V Output Voltage Applications

MAX17552AUBEVKIT

Evaluation Kit for the MAX17552 (µMAX) in 5V Output-Voltage Application

MAX17552AEVKIT

View Detailed Evaluation Kit Information

The MAX17552AEVKIT# evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the performance of the MAX17552A 60V, 100mA ultra-small, high-efficiency, Himalaya synchronous step-down DC-DC converter in a 10-pin TDFN package. The EV kit operates over a wide input-voltage range of 6V to 60V and provides up to 100mA load current at 5V output. It draws only 26µA supply current under no-load conditions (EN/UVLO connected to V_IN). The EV kit is programmed to switch at a frequency of 220kHz and delivers a peak efficiency of 93% with the supplied components. The device is simple to use and easily configurable with minimal external components. It features cycle-by-cycle peak current limit protection, undervoltage lockout, and thermal shutdown.

The EV kit comes installed with the MAX17552AATB+ in a 10-pin (3mm x 2mm) lead(Pb)-free/RoHS-compliant TDFN package.

Applications

4–20mA Current-Loop Powered Sensors
Battery-Powered Equipment
General-Purpose Point-of-Load
High-Voltage LDO Replacement
HVAC and Building Control
Industrial Sensors and Process Control

Features & Benefits

Wide 6V to 60V Input Voltage Range
5V Output, 100mA Continuous Current
93% Peak Efficiency
26µA No Load Supply Current
Enable/UVLO Input, Resistor-Programmable UVLO Threshold
Internal or Programmable Soft-Start
Selectable PWM and PFM Modes of Operation
Open-Drain Active-Low RESET Output
Overcurrent Protection
Overtemperature Protection
Proven PCB Layout
Fully Assembled and Tested

MAX17552ATBEVKIT

View Detailed Evaluation Kit Information

The MAX17552 5V evaluation kit (EV kit) (TDFN) is a fully assembled and tested circuit board that demonstrates the performance of the MAX17552 60V, 100mA ultra-small, high-efficiency, synchronous step-down DC-DC converter in a 10-pin TDFN package. The EV kit operates over a wide input-voltage range of 6V to 60V and provides up to 100mA load current at 5V output. It draws only 26µA supply current under no-load conditions (EN/UVLO connected to V_IN). The EV kit is programmed to switch at a frequency of 220kHz and delivers a peak efficiency of 93% with the supplied components. The device is simple to use and easily configurable with minimal external components. It features cycle-by-cycle peak current limit protection, undervoltage lockout, and thermal shutdown.

The EV kit comes installed with the MAX17552ATB+ in a 10-pin (3mm x 2mm) lead(Pb)-free/RoHS-compliant TDFN package.

Applications

4–20mA Current-Loop Powered Sensors
Battery-Powered Equipment
General-Purpose Point-of-Load
High-Voltage LDO Replacement
HVAC and Building Control
Industrial Sensors and Process Control

Features & Benefits

Wide 6V to 60V Input Voltage Range
5V Output, 100mA Continuous Current
93% Peak Efficiency
26μA No Load Supply Current
Enable/UVLO Input, Resistor-Programmable UVLO Threshold
Internal or Programmable Soft-Start
Selectable PWM and PFM Modes of Operation
Open-Drain Active-Low RESET Output
Overcurrent Protection
Overtemperature Protection
Proven PCB Layout
Fully Assembled and Tested

Resources

MAX17552ATBEVKIT Gerber File - Design Files

ZIP

6.51M

MAX17552AUBEVKIT

View Detailed Evaluation Kit Information

The MAX17552 5V evaluation kit (EV kit) (µMAX^®) is a fully assembled and tested circuit board that demonstrates the performance of the MAX17552 60V, 100mA ultra-small, high-efficiency, synchronous step-down DC-DC converter in a 10-pin µMAX package. The EV kit operates over a wide input voltage range of 6V to 60V and provides up to 100mA load current at 5V output. It draws only 26µA supply current under no-load conditions (EN/UVLO connected to V_IN). The EV kit is programmed to switch at a frequency of 220kHz and delivers a peak efficiency of 93% with the supplied components. The device is simple to use and easily configurable with minimal external components. It features cycle-by-cycle peak current-limit protection, undervoltage lockout and thermal shutdown.

The EV kit comes installed with the MAX17552AUB+ in an 10-pin (3mm x 3mm), lead(Pb)-free/RoHS-compliant µMAX package.

Applications

4–20mA Current-Loop Powered Sensors
Battery-Powered Equipment
General-Purpose Point-of-Load
High-Voltage LDO Replacement
HVAC and Building Control
Industrial Sensors and Process Control

Features & Benefits

6V to 60V Input Voltage Range
5V Output, 100mA Continuous Current
93% Peak Efficiency
26µA No-Load Supply Current
EN/UVLO for On/Off Control and Programmable Input Undervoltage Lockout
Programmable Switching Frequency
Internal or Programmable Soft-Start
PFM or Forced-PWM Mode of Operation
Active-Low RESET Output
Peak Current-Limit Protection
Thermal Shutdown
Proven PCB Layout
Fully Assembled and Tested

Resources

MAX17552AUBEVKIT Gerber File - Design Files

ZIP

6.78M

Documentation & Resources

Data Sheet

MAX17552-MAX17552B: 60V, 100mA, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter with 22μA No-Load Supply Current Data Sheet (Rev. 7)
11/24/2021
PDF

Reliability Data

MAX17552B Reliability Data
10/10/2022
PDF

Product Recommendations

MAX17552B Companion Parts

Recommended Related Parts

MAX15062.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number	Material Declaration	Reliability Data	Pin/Package Drawing	CAD Symbols, Footprints & 3D Models
MAX17552BATB+	Material Declaration	Reliability Data	10-LFCSP-3X2X0.75	Ultra Librarian SamacSys
MAX17552BATB+T	Material Declaration	Reliability Data	10-LFCSP-3X2X0.75	Ultra Librarian SamacSys
Wafer Fabrication Data		MAX17552B Reliability Data

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Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.