Freescale Intros MC34652/MC34653 Power Management ICs

Freescale Semiconductor Inc. (Austin, TX) introduced two new advanced, highly integrated, power management ICs, the MC34652 and MC34653, which facilitate an easy hot-swapping solution in -48 V backplanes for telecommunications and networking equipment. Both the MC34652 and MC34653 integrate a power MOSFET to control the load.

The ICs feature an input-voltage range of -15 V to -80 V (MC34652) and -39 V to -74 V (MC34653), a maximum output current of 2 A (MC34652) and 1 A (MC34653), and over-current limiting with auto retry (default or programmable). The charging current limit is independent of the load capacitance. Also included is a startup and retry delay timer (programmable option on the MC34652), over-voltage and under-voltage detection (programmable option on the MC34652), and active high and low power-good output signals. The new chips also have thermal shutdown protection.

Production quantities of both the MC34652 and MC34653 are available now. The MC34652, in a 16-lead SOIC, is priced at $2.15 each in 1,000-unit quantities. The MC34653, in an eight-lead SOIC, is priced at $1.82 each in 1,000-unit quantities.