Maxim Integrated MAX17681ATB+
Part Number:
- MAX17681ATB+
Manufacturer:
- Maxim Integrated
Ventron No:
- 3754515-MAX17681ATB+
Description:
- IC REG BUCK ISO ADJ SYNC 10TDFN
Datasheet:
- MAX17681ATB+
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Part Overview
Description
The MAX17681/MAX17681A is a high-voltage, high-efficiency, iso-buck DC-DC converter designed to provide isolated power up to 5W. It operates over a wide 4.5V to 42V input and uses primary-side feedback to regulate the output voltage. The device uses peak-current-mode control and low-resistance, on-chip MOSFETs for high efficiency and simplified PCB layout. It generates a well-regulated primary side voltage that is scaled by a transformer turns ratio to derive isolated secondary output rails. Both MAX17681 and MAX17681A support primary side overcurrent protection, while the MAX17681A also supports robust secondary-side overcurrent protection. The MAX17681/MAX17681A is available in a compact 10-pin (3mm x 2mm) TDFN package.
Features
Reduces external components and total cost (no optocoupler)
Synchronous primary operation with all-ceramic capacitors for compact layout
Wide 4.5V to 42V input
0.9V to 0.96 x VIN primary output voltage
Delivers up to 5W output power
Peak efficiency >90%
0.9μA (typ) shutdown current
Operates reliably in adverse industrial environments
Peak and sink current-limit protection
±1.7% feedback accuracy
Programmable EN/UVLO threshold
Adjustable soft-start
Overtemperature protection
-40°C to 125°C operation
Short-circuit protection
MAX17681A supports robust secondary-side short-circuit protection
Applications
Isolated fieldbus interfaces
PLC I/O modules
Smart meters
Isolated power supplies in medical equipment
Floating power supply generation
The MAX17681/MAX17681A is a high-voltage, high-efficiency, iso-buck DC-DC converter designed to provide isolated power up to 5W. It operates over a wide 4.5V to 42V input and uses primary-side feedback to regulate the output voltage. The device uses peak-current-mode control and low-resistance, on-chip MOSFETs for high efficiency and simplified PCB layout. It generates a well-regulated primary side voltage that is scaled by a transformer turns ratio to derive isolated secondary output rails. Both MAX17681 and MAX17681A support primary side overcurrent protection, while the MAX17681A also supports robust secondary-side overcurrent protection. The MAX17681/MAX17681A is available in a compact 10-pin (3mm x 2mm) TDFN package.
Features
Reduces external components and total cost (no optocoupler)
Synchronous primary operation with all-ceramic capacitors for compact layout
Wide 4.5V to 42V input
0.9V to 0.96 x VIN primary output voltage
Delivers up to 5W output power
Peak efficiency >90%
0.9μA (typ) shutdown current
Operates reliably in adverse industrial environments
Peak and sink current-limit protection
±1.7% feedback accuracy
Programmable EN/UVLO threshold
Adjustable soft-start
Overtemperature protection
-40°C to 125°C operation
Short-circuit protection
MAX17681A supports robust secondary-side short-circuit protection
Applications
Isolated fieldbus interfaces
PLC I/O modules
Smart meters
Isolated power supplies in medical equipment
Floating power supply generation
Specifications
Maxim Integrated MAX17681ATB+ technical specifications, attributes, parameters and parts with similar specifications to Maxim Integrated MAX17681ATB+.
- Factory Lead Time8 Weeks
- Mounting TypeSurface Mount
- Package / Case10-WFDFN Exposed Pad
- Surface MountYES
- Number of Pins10
- Weight50.008559mg
- Operating Temperature-40°C~125°C TA
- PackagingTube
- Published2014
- JESD-609 Codee4
- Part StatusActive
- Moisture Sensitivity Level (MSL)1 (Unlimited)
- Number of Terminations10
- ECCN CodeEAR99
- Terminal FinishGold (Au) - with Nickel (Ni) barrier
- TechnologyBICMOS
- Terminal PositionDUAL
- Terminal FormNO LEAD
- Peak Reflow Temperature (Cel)NOT SPECIFIED
- Terminal Pitch0.5mm
- Reflow Temperature-Max (s)NOT SPECIFIED
- Base Part NumberMAX17681
- FunctionStep-Down
- Number of Outputs1
- Voltage - Input (Max)42V
- Output Voltage40.32V
- Output TypeAdjustable
- Voltage - Input (Min)4.5V
- Input Voltage-Nom24V
- Analog IC - Other TypeSWITCHING REGULATOR
- Operating Supply Current2.8mA
- Output ConfigurationPositive, Isolation Capable
- Voltage - Output (Min/Fixed)0.9V
- TopologyBuck
- Control ModeCURRENT-MODE
- Frequency - Switching200kHz
- Control TechniquePULSE WIDTH MODULATION
- Synchronous RectifierYes
- Height Seated (Max)0.8mm
- Length3mm
- Width2mm
- RoHS StatusROHS3 Compliant
Certification
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