The LTM®4653 is an ultralow noise 58V, 4A DC/DC stepdown μModule® regulator designed to meet the radiated emissions requirements of EN55022. Conductedemission requirements can be met by adding standard filter components. Included in the package are the switching controller, power MOSFETs, inductor, filters and supportcomponents.
Operating over an input voltage range of 3.1V to 58V, the LTM4653IY#PBF supports an output voltage range of 0.5V to 94% of VIN, and a switching frequency range of 250kHzto 3MHz (400kHz default), each set by a single resistor. For high load currents, the LTM4653IY#PBF can be paralleled in PolyPhase® operation and synchronized to an external clock. Only the bulk input and output filter capacitors are needed to finish the design.
The LTM4653IY#PBF is offered in a 15mm × 9mm × 5.01mm BGA package with SnPb or RoHS compliant terminal finish.
Feature
- Complete Low EMI Switch Mode Power Supply
- EN55022 Class B Compliant
- Wide Input Voltage Range: 3.1V to 58V
- Up to 4A Output Current
- Output Voltage Range: 0.5V ≤ VOUT ≤ 0.94 • VIN
- ±1.67% Total DC Output Voltage Error Over Line, Load and Temperature (–40°C to 125°C)
- Parallel and Current Share with Multiple LTM4653s
- Analog Output Current Indicator
- Programmable Input Voltage Limiting
- Constant-Frequency Current Mode Control
- Power Good Indicator and Programmable Soft-Start
- Overcurrent/Overvoltage/Overtemperature Protection
- 15mm × 9mm × 5.01mm BGA Package
Applications
- Avionics, Industrial Control and Test Equipment
- Video, Imaging and Instrumentation
- 48V Telecom and Network Power Supplies
- RF Systems
