U6820BM Datasheet | Atmel

Features - Four Short-circuit-protected High-side Drivers with a Maximum Current Capability of 50 m A Each - Four Short-circuit-protected Low-side Drivers with a Maximum Current Capability of - - - - - - - - - 50 m A Each ON Resistance High Side Ron < 10 Ω Versus Total Temperature Range ON Resistance Low Side Ron < 7 Ω Versus Total Temperature Range Short-circuit Detection of Each Driver Stage Disabling of Driver Stages in the Case of Short-circuit and Overtemperature Detection Independent Control of Each Driver Stage via an 8-bit Shift Register Status Output Reports Short-circuit Condition Status Output Reports when All Loads Are Switched Off Timing of Status Output Reset Signalizes Failure Mode Temperature Protection in Conjunction with Short-circuit Detection Description The U6820BM is a driver interface in BCDMOS technology with 8 independent driver stages having a maximum current capability of 50 m A each. Its partitioning into 4 high-side and 4 low-side driver stages allows an easy connection of either 4 halfbridges or 2 H-bridges on the pc board. The U6820BM municates with a microcontroller via an 8-bit serial interface. Integrated protection against short circuit and overtemperature give added value. EMI protection and 2-k V ESD protection together with automotive qualification referring to conducted interference (ISO/TR 7637/1) make this IC ideal for both automotive and industrial applications. Figure 1. Block Diagram V 6 CC HS4 16 HS3 9 HS2 8 HS1 1 Dual Quad BCDMOS Driver IC U6820BM Current limiter V 14 CC Current limiter Current limiter Current limiter 3 VS STATUS CS CLK DI 11 12 H S 4 H S 3 H S 2 H S 1 L S 4 L S 3 L S 2 L S 1 Thermal protection Control logic V CC Input Register Power-on reset 5 Current limiter Current limiter Current limiter Current limiter GND S 4 GND CC 15...