3

HV300/HV310

Timing Diagrams

Absolute Maximum Ratings

+0.3V to -100V

-0.3V to +100V

Operating Ambient Temperature Range

-40°C to +85°C

Operating Junction Temperature

Range

-40°C to +125°C

Storage Temperature Range

-65°C to +150°C

UV & OV ref to V

EE

-0.3V to +12V

V

range from 9V to 11V.

V

transistor and may be obtained from its datasheet.

to obtain the limit curent. It is dependent on the pass

transistor’s characteristics and may be obtained from the

transfer characteristics curves on the transistor datasheet.

be obtained from its datasheet.

R

I

V

R

tV

C

I

tV

C

I

tt

t

t

C

g

I

I

R

R

tV

C

I

t

tV

V

V

C

I

LIM

SENSE

SENSE

START

RAMP

RAMP

TH

GS th

RAMP

RAMP

POR

START

TH

RISE

RAMP

fs

RAMP

LIM

SENSE

FB

LIM

IN

LOAD

LIM

RISE

PWRGD

INT

GS

RAMP

RAMP

=

=

=

=+

≈

−













≈−

=

−−

()

12

09

1

2

12

.

.

.

()

(lim)

GND

-48V

t

START

contact

bounce

I

LIM

PWRGD

V

UVL

t

RISE

t

PWRGD

Initialization

Limiting

Full On

V

GATE

t

LIM

t

TH

V

RAMP

V

GATE

inactive

active

V

OUT

V

IN

V

GS(th)

V

GS(lim)

V

EE

t

POR

90%