LB1946

No.7115-13/16

Mix decay logic setting

When serial transmission data (D4, D10) is Low

MD pin setting:

5V VCC type: 1.6 to 3.9V

3.3V VCC type: 1.2 to 2.5V

CR voltage and MD pin voltage are compared to select dual-side chopping or upper-side chopping.

CR voltage

> MD pin voltage: dual-side chopping

CR voltage

< MD pin voltage: upper-side chopping

t on: Output on time

t off: Output off time

tm: Fast decay time in mix decay mode

tn: Noise cancellation time

tn

t on

t off

tm

MD pin voltage level

ILB01484

MIX DECAY

Noise spike

E pin

Output current

CR pin

Output pin

Switching Waveform