TPS2399DMT7G datasheet(4/15 Pages) ONSEMI

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TPS2398, TPS2399

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Table 5. ELECTRICAL CHARACTERISTICS

VI(−VIN) = −48 V with respect to RTN, VI(EN) = 2.8 V, VI(ISENS) = 0 V, all outputs unloaded, device not in fault mode, TJ = 25°C; unless

otherwise noted. The Min and Max specifications are guaranteed at −40

°C ≤ TJ ≤ 85°C. (Notes 5, 6)

Parameter

Unit

Max

Typ

Min

Symbol

Test Conditions

LINEAR CURRENT AMPLIFIER (LCA)

Reference clamp voltage

VO(IRAMP) = open

VREF_K

Input offset voltage

VO(IRAMP) = 2 V

VIO

−7

RAMP GENERATOR

IRAMP source current, slow turn−on rate

VO(IRAMP) = 0.25 V

ISRC1

−850

−600

−400

IRAMP source current, normal rate

VO(IRAMP) = 1 V, 3 V

ISRC2

−11

−10

−9

Low−level output voltage

VI(EN) = 0 V

VOL

Voltage gain, relative to ISENS

VO(IRAMP) = 1 V, 3 V

9.5

10.5

mV/V

OVERLOAD COMPARATOR

Current overload threshold, ISENS

VTH_OL

100

120

Glitch filter delay time

VI(ISENS) = 200 mV

tDLY

FAULT TIMER

Low−level output voltage

VI(EN) = 0 V

VOL

Charging current, current limit mode

VI(ISENS) = 80 mV, VO(FLTTIME) = 2 V

ICHG

−55

−50

−45

Fault threshold voltage

VFLT

3.75

4.0

4.25

Discharge current, retry mode (TPS2399)

VI(ISENS) = 80 mV, VO(FLTTIME) = 2 V, Fault Mode

IDSG

0.38

0.75

Output duty cycle (TPS2399)

0.8

1.5

Discharge current, timer reset mode

VO(FLTTIME) = 2 V

IRST

PG OUTPUT

High−level output (leakage) current

VI(EN) = 0 V, VO(PG) = 65 V

IOH

Driver ON resistance

IO(PG) = 1 mA

RDS(ON)

5. All voltages are with respect to the −VIN terminal unless otherwise stated.

6. Currents are positive into and negative out of the specified terminal.

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

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