Product Summary

The ST1155B is a two-channel low-saturation bi-directional motor driver IC. The design is optimal for stepper-motor applications, such as cameras, printers, FDDs, or other portable devices.

Parametrics

ST1155B absolute maximum ratings: (1)Input Voltage: VDD+0.4 V; (2)Peak Current (in parallel connection): 2 A; (3)Power Dissipation: 800 mW; (4)Operating Temperature Range: -40 ~ 125 °C; (5)Storage Temperature Range: -65 ~ 150 °C.

Features

ST1155B features: (1)Low voltage operation ( VDD min = VS1 min = VS2 min = 1.5V ); (2)Low saturation voltage ( Upper transistor + low transistor residual voltage; 0.3V typ. at 400mA; 0.6V typ. at 750mA); (3)Parallel connection ( two-channel driver: Upper transistor + low transistor residual; 0.4V typ. at 800mA ); (4)Separate control logic power supply and motor driver power supply; (5)High output sinking and driving capability; (6)Thin, highly reliable package (SSOP-16).

Diagrams

ST1155B pin connection