LTM4653IY#PBF

LTM4653IY#PBF is an ultralow noise 58V, 4A DC/DC step-down μModule® regulator designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power MOSFETs, inductor, filters, and support components. Operating over an input voltage range of 3.1V to 58V, the LTM4653 supports an output voltage range of 0.5V to 94% of VIN and a switching frequency range of 250KHz to 3MHz (400KHz default), each set by a single resistor. For high load currents, the LTM4653 can be paralleled in PolyPhase® operation and synchronized to an external clock. Applications include avionics, industrial control and test equipment, video, imaging, and instrumentation, 48V telecom and network power supplies, and RF systems.

• Complete low EMI switch mode power supply, EN55022 Class B compliant
• Wide input voltage range from 3.1V to 58V, analogue output current indicator
• Programmable input voltage limiting, constant-frequency current mode control
• Power good indicator and programmable soft-start, overcurrent/overvoltage/overtemperature protection
• ±1.67% total DC output voltage error over line, load and temperature
• Input supply current is 2.1A typical at (CLKIN open circuit, IOUT = 4A, TA = 25°C)
• Input supply current in shutdown is 4µA typical at (shutdown, RUN = GND, TA = 25°C)
• Load regulation accuracy is 0.05% typical at (VIN = 48V, 0A ≤ IOUT ≤ 4A)
• Minimum on-time is 60ns typical at (TA = 25°C)
• Internal operating temperature range from -40°C to 125°C, 77-pin BGA package

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