Semtech Corporation SC2442H
The SC2442 operates over the range of 4.75V to 30V and SC2442H operates over the range of 4.75V to 36V. SC2442/H High Performance Wide Input Range Dual Synchronous Buck Controller POWER MANAGEMENT Description SC2442 and SC2442H are high performance dual buck converter controllers that can be configured for a variety of synchronous buck applications where efficiency is most important.FEATURES
Dual output controller Asynchronous start up mode Power up sequencing to prevent latch-ups Out of phase operation for low input ripple Over current protection Output down to 0.75V Wide input range, 4.75 to 30V for SC2442 and 4.75 to 36V for SC2442H Vcc regulator with external PNP transistor Programmable clock frequency up to 1.1MHz Two synchronous bucks for high efficiency at high current –40 to +125 Deg C operating temperature Small package TSSOP-24 Fully WEEE and RoHS CompliantAPPLICATIONS
Point of load converter applications DSL applications with multiple output voltages Power management for mixed signal applications Cable modems and set top boxes. VIN+ MAX 30V/36V (H) R1 R2 C1 Q5 C6 R9 C7 RTN R3 R4 OC1 OC2 C4 C5 C8 C9 R1 2 RTN R10 SS1 SS2 OSC AVCC PVCC 3 VIN 2 BDI U1 OC1 4 OC 2 21 1 AVCC GD1H 9 13 P VC C G D 1L 11 SC2442ITSTR 7 SS1 G D 2H 16 18 S S 2 G D 2L 14 23 ROS C P H 1 10 6 FB1 BST1 8 5 E A1 P H 2 15 19 FB2 BS T 2 17 20 E A2 P G ND...