S,max DC

S

Gate,AVE

V

15V

R

1mA

I

-

=

+

DRV110

SLVSBA8B – MARCH 2012 – REVISED JULY 2015

www.ti.com

Feature Description (continued)

Voltage at the OUT pin, that is the gate voltage of an external switching device, is equal to VIN voltage during

ON-cycle. The voltage is driven to ground during OFF-cycle. VIN voltages below 15 V can be supplied directly

from an external voltage source. Supply voltages of at least 6 V are supported.

bypass regulator that replicates the function of an ideal Zener diode. This requires that the supply current is

VIN pin is used to store enough energy to charge the external switch gate capacitance at the OUT pin. Current

limiting resistor size to keep quiescent current less than 1 mA can be calculated by Equation 5.

(5)

Open-drain pulldown path at the STATUS pin is deactivated if either undervoltage lockout or thermal shutdown

blocks have triggered.

7.4 Device Functional Modes

The DRV110 transitions through three different states. The first is the OFF state, where the EN pin is low and the

PWM output is off. The second is the PEAK state, which begins when the EN pin is set high, and ends once

pin is set low again and the PWM turns off.

10

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