1 Features
• Wide input voltage range: 3V to 65V (70V transient < 100ms)
– Meets LV148 / ISO21780 requirements
• Designed for low EMI requirements
– Facilitates CISPR 11 class B compliance
– Mode pin configurable ±5% or ±10% dualrandom spread spectrum reducing peak emissions
– Enhanced HotRod™ QFN package with symmetrical pinout
– Switching frequency from 300kHz to 2.2MHz
– Pin-configurable AUTO or FPWM operation
– Internal compensation, current limit, and TSD
• Low minimum on time: 40ns (maximum)
– Enables 36VIN to 3.3VOUT conversion at 2.2MHz
• High-efficiency power conversion at all loads
– > 94% peak efficiency at 24VIN, 5VOUT, 400kHz
– 2.5μA switching input current at no load
• High power density
– 3.6mm × 2.6mm, wettable flank, 20-pin package
– Pin compatible with 36V 4/6/8A LM654x0-Q1
– ϴJA = 24.0°C/W (LM65645EVM)
• Create a custom design using the LM656x5 with the WEBENCH® Power Designer