Power by Linear™/Analog Devices’ LTC3649EFE is a high-efficiency 60 V, 4 A synchronous monolithic step-down regulator. The regulator features a single resistor programmable output voltage, internal compensation, and high-efficiencies over a wide VOUT range.The step-down regulator operates from an input voltage range of 3.1 V to 60 V and provides an adjustable rail-to-rail output range from (VIN - 0.5 V) to ground while delivering up to 4 A of output current. The switching frequency is also adjusted with an external resistor. A user-selectable mode input is provided to allow the user to trade off ripple noise for efficiency at light loads; Burst Mode® operation provides the highest efficiency at light loads, while forced continuous mode provides low output ripple. The MODE/SYNC pin can also be used to allow the user to synchronize the switching frequency to an external clock.The LTC3649EFE operates with a peak current mode architecture that allows for fast transient response with inherent cycle-to-cycle current limit protection. It also features programmable output current limit, current monitoring, and input voltage regulation. This regulator comes in a QFN and TSSOP packages. The LTC3649EFE is ideal for industrial and automotive applications.<strong>Features:</strong> VIN range: 3.1 V to 60 V, VOUT range: 0 V to (VIN - 0.5 V), Single resistor VOUT programming, Integrated 110 mΩ top N-channel/50 mΩ bottom N-channel MOSFETs, 95% efficiency with 12 VIN and 5 VOUT, Regulated IQ: 440 μA,, Shutdown IQ: 18 μA, Accurate current monitoring (±4%) without sense resistor, Accurate resistor programmable frequency (300 kHz to 3 MHz) with ±50% frequency sync range, Accurate programmable output current, Input voltage regulation for MPPT applications, ±0.8% output voltage accuracy, Peak current mode operation, Programmable wire drop compensation, Burst Mode operation, forced continuous mode, Internal compensation and programmable soft-start, Overtemperature protection, 28-lead QFN and TSSOP packages, Automotive applications, Automation applications, Industrial applications
Feature
- Wide VIN Range: 3.1V to 60V
- Wide VOUT Range: 0V to (VIN – 0.5V)
- Single Resistor VOUT Programming
- Integrated 110mΩ Top N-Channel/50mΩ Bottom N-Channel MOSFETs
- 95% Efficiency with 12VIN and 5VOUT
- Regulated IQ: 440μA, Shutdown IQ: 18μA
- Accurate Current Monitoring (±4%) without Sense Resistor
- Accurate Resistor Programmable Frequency (300kHz to 3MHz) with ±50% Frequency Sync Range
- Accurate Programmable Output Current
- Input Voltage Regulation for MPPT Applications
- ±0.8% Output Voltage Accuracy
- Peak Current Mode Operation
- Programmable Wire Drop Compensation
- Burst Mode® Operation, Forced Continuous Mode
- Internal Compensation and Programmable Soft-Start
- Overtemperature Protection
- Available in Thermally Enhanced 28-Lead (4mm × 5mm) QFN and TSSOP Packages
Applications
- Industrial Applications
- Automotive Applications
