Datasheet

TPS2394
www.ti.com SLVSAA9 –AUGUST 2010
ELECTRICAL CHARACTERISTICS
SOURCE = -48 V, UV = 2.5 V, OV = 0.5 V, SENSE = 0 V, RAMP = 0 V, T
A
= −40°C to 85°C (unless otherwise noted)
(1)(2)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
INPUT SUPPLY
I
CC1
Supply current SOURCE = -48 V 1000 1500
µA
I
CC2
Supply current SOURCE = -80 V 2000
V
UVLO_I
Internal UVLO threshold voltage To GAT pull up –11.8 –10 –8 V
V
HYST
Internal UVLO hysteresis voltage 50 240 500 mV
OVERVOLTAGE AND UNDERVOLTAGE INPUTS (OV AND UV)
To GAT pull up, 25°C 1.391 1.400 1.409
V
THUV
UV threshold voltage, UV rising, to SOURCE To GAT pull up, 0 to 70°C 1.387 1.400 1.413 V
To GAT pull up, –40 to 85°C 1.384 1.400 1.419
I
HYSUV
UV hysteresis UV = −45.5 V –11 –10 –9
µA
I
ILUV
UV low−level input current UV = −47 V –1 1
V
THOV
OV threshold voltage, OV rising, to SOURCE To GAT pull up 1.376 1.400 1.426 V
I
HYSOV
OV hysteresis OV = −45.5 V –11.1 –10 –8.6
µA
I
ILOV
OV low−level input current OV = −47 V –1 1
LINEAR CURENT AMPLIFIER (LCA)
V
OH
High level output, GAT−SOURCE SENSE = SOURCE 11 14 17 V
SENSE – SOURCE = 80 mV,
I
SINK_f
GAT sink current in fault 30 75
GAT = –43 V, FLTTIME = 5 V
mA
SENSE – SOURCE = 80 mV,
I
SINK_l
GAT sink current in linear mode 5 10
GAT = –43 V, FLTTIME = 2 V
I
IN
SENSE input current 0 V < SENSE – SOURCE < 0.2 V –1 1 µA
V
REF_K
Reference clamp voltage, SENSE – SOURCE RAMP – SOURCE = 6 V 34 42 50
mV
V
IO
Input offset voltage, SENSE – SOURCE RAMP – SOURCE = 0 V –7 9
(1) All voltages are with respect to RTN unless otherwise stated.
(2) Currents are positive into and negative out of the specified terminal.
Copyright © 2010, Texas Instruments Incorporated 3
Product Folder Link(s): TPS2394