UCC3923, UCC3924, UCC3925, UCC3926, UCC3927, UCC3928

HIGHVOLTAGE HOT SWAP POWER MANAGER

SLUS471 – NOVEMBER 2000

8

POST OFFICE BOX 655303

electrical characteristics over recommended operating junction temperature range,

–VIN to GND = –48 V, ON to GND = 2.8 V, INSA = INSB = –VIN, ISENS = –VIN, UVLO = 2.5 V, OVLO

= VIN, all outputs unloaded (unless otherwise noted) (continued)

voltage reference output

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

REF voltage

–50

µA < IREF < 0 µA

4.9

5.0

5.1

V

undervoltage/overvoltage lockout

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

UVLO falling threshold

ON = high,

to GATE falling

1.20

1.25

1.30

V

UVLO hysteresis

ON = high,

to GATE rising

25

mV

UVLO input current

VUVLO = 2.5 V

–1

1

µA

OVLO rising threshold

ON = high,

to GATE falling

1.20

1.25

1.30

V

OVLO hysteresis

ON = high,

to GATE rising

25

mV

OVLO input current

VOVLO = 2.5 V

–1

1

µA

supply and control inputs

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

–VIN input current

250

µA

INSA, INSB threshold voltage

ON = high,

to GATE rising

1.0

1.4

1.8

V

INSA, INSB pullup current

VINSA = VINSB = –VIN

10

µA

ON threshold voltage with respect to

GND

To GATE rising

1.0

1.4

1.8

V

ON input current

VON – VGND = 5 V

10

µA