Freescale Semiconductor Advance Information
Document Number: MPC17550 Rev.
2.
0, 7/2006
Quad H-Bridge Micromotor Driver with DC/DC Boost Converter
17550
The 17550 is a monolithic quad H-Bridge power IC ideal for portable electronic applications containing tiny bipolar stepper motors and/or brush DC-motors powered by two-to-four cell NiCd/NiMH batteries.
The 17550 operates from 2.
5 V to 5.
5 V, with independent control of each H-Bridge via parallel 3.
0 V or 5.
0 V logic-compatible I/O.
The device features an on-board DC / DC boost converter that allows motor operation all the way down to 1.
6 V (the boost converter supplies the gate-drive
voltage for each of the four independent H-bridge outp...