Datasheet

UCC27518
UCC27519
SLUSB33 –MAY 2012 www.ti.com
RECOMMENDED OPERATING CONDITIONS
over operating free-air temperature range (unless otherwise noted)
MIN TYP MAX UNIT
Supply voltage range, VDD 4.5 12 18 V
Operating junction temperature range -40 140 °C
Input voltage, (IN+ and IN-) and Enable (EN) 0 18 V
ELECTRICAL CHARACTERISTICS
VDD = 12 V, T
A
= T
J
= -40°C to 140°C, 1-µF capacitor from VDD to GND. Currents are positive into, negative out of the
specified terminal.
PARAMETER TEST CONDITION MIN TYP MAX UNITS
BIAS Currents
IN+ = VDD (UCC27519),
51 85 123
IN- = GND (UCC27518)
I
DD(off)
Startup current VDD = 3.4 V µA
IN+ = GND (UCC27519),
51 70 103
IN- = VDD (UCC27518)
Under Voltage Lockout (UVLO)
T
A
= 25°C 3.85 4.20 4.57
V
ON
Supply start threshold
T
A
= -40°C to 140°C 3.80 4.20 4.67
V
Minimum operating
V
OFF
3.45 3.9 4.35
voltage after supply start
V
DD_H
Supply voltage hysteresis 0.19 0.3 0.45
INPUTS (IN+, IN-)
V
IN_H
Input signal high 55 62
threshold
VDD = 4.5 V
V
IN_L
Input signal low threshold 31 39
V
IN_HYS
Input signal hysteresis 16
V
IN_H
Input signal high 55 59
threshold
VDD = 12 V %VDD
V
IN_L
Input signal low threshold 31 39
V
IN_HYS
Input signal hysteresis 16
V
IN_H
Input signal high 55 58
threshold
VDD = 18 V
V
IN_L
Input signal low threshold 35 38
V
IN_HYS
Input signal hysteresis 17
ENABLE (EN)
Enable signal high
V
EN_H
2.1 2.3
threshold
Enable signal low VDD = 12 V V
V
EN_L
1.00 1.25
threshold
V
EN_HYS
Enable hysteresis 0.86
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