KSD-I7A001-002

7

SEPT., 2010 REV. 02

Application Information

1. Thermal Shut Down Circuit

The built-in thermal shutdown circuit mutes turn off the output current when the chip temperature

reaches 175℃ (typ.). The hysteresis is set to 25℃ (typ.) by IHys,

so the circuit will start up again when the chip temperature falling down to 150℃ (typ.)

2. Reference Input & Stand-by Function

•Reference input [ BIAS PIN : PIN 27 ]

The applied voltage at the reference input pin must be between 0.8V and 6.5V

( when SVcc=8.5V )

•Standby input [ PIN28 ]

The following input conditions must be satisfied for the standby function

Stand-by input voltage

OPERATION

Below 0.5V [ or Open ]

The stand-by function is activated so the bias block and power

block are disabled

Above 2.0V

Recover the normal operation

Bandgap Voltage

[ 1.25V ]

Actuators, Sled and

Loading motor

R1

R2

R3

R4

IHys

S3045