Datasheet

LTC2955
3
2955f
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Supply
V
IN
Supply Voltage Range
l
1.5 36 V
I
IN
V
IN
Supply Current
l
0.5 1.2 3 µA
V
UVL
V
IN
Undervoltage Lockout V
IN
Rising
l
1.0 1.15 1.3 V
V
UVL(HYST)
V
IN
Undervoltage Lockout Hysteresis
l
30 85 200 mV
Input Pins
V
PB(MIN(MAX))
PB Voltage Range
l
–36 36 V
V
PB
PB Input Threshold PB Falling
l
0.6 0.8 1 V
V
PB(HYST)
PB Input Threshold Hysteresis (Note 3) 40 mV
V
PB(VOC)
PB Open Circuit Voltage I = –1µA
l
3.0 4.3 5.5 V
I
PB
PB Input Leakage Current 6V < PB < 36V
PB = 1V
PB = –36V
l
l
l
–1 –4
±10
–8
–400
µA
µA
µA
V
ON
ON Threshold ON Rising
l
0.76 0.80 0.84 V
V
ON(HYST)
ON Hysteresis DFN Package Only 40 mV
I
ON
ON Input Leakage Current ON = 1V
ON = 36V
l
l
±10
±100
nA
nA
V
KILL
KILL Input Threshold Voltage KILL Falling
l
0.76 0.80 0.84 V
V
KILL(HYST)
KILL Input Threshold Hysteresis (Note 3) 30 mV
I
KILL
KILL Input Leakage Current KILL = 1V
l
±50 nA
V
SEL
SEL Input Threshold
l
0.4 0.8 1.2 V
I
SEL
SEL Input Current SEL = 1V
SEL = 36V
l
l
±50
±100
nA
nA
Output Pins
V
EN/EN(VOL)
EN/EN Voltage Output Low I = 1mA
l
0.175 0.4 V
V
EN(VOH)
EN Voltage Output High (LTC2955-1) I = 0µA, –0.5µA
l
1.5 5.5 V
V
EN(VOH)
EN Voltage Output High (LTC2955-2) I = 0µA, –0.5µA
l
V
IN
– 1.5 V
I
EN
EN Pull-Up Current (LTC2955-1) EN = 0V
l
–1.2 –2 –2.8 µA
I
EN
EN Pull-Up Resistance (LTC2955-2)
l
0.45 0.9 1.35 M
V
INT(VOL)
INT Voltage Output Low I = 3mA
l
0.4 V
I
INT
INT Leakage Current INT = 5V
l
±50 nA
V
PGD(VOH)
PGD Voltage Output High I = 0µA, –0.5µA
l
1.5 5.5 V
V
PGD(VOL)
PGD Voltage Output Low I = 3mA
l
0.4 V
I
PGD
PGD Pull-Up Current PGD = 0V
l
–1.2 –2 –2.8 µA
I
TMR(PU)
TMR Pull-Up Current TMR = 0V
l
–2 –3 –4 µA
I
TMR(PD)
TMR Pull-Down Current TMR = 1.5V
l
234µA
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 7V unless otherwise noted. (Note 2)