Datasheet

LTC2919
4
2919f
ADJ Threshold Voltage
vs Temperature
V
CC
UVLO Threshold Variation
vs Temperature
REF Output Voltage
vs Temperature
REF Output Load Regulation
Quiescent Supply Current
vs Temperature
TYPICAL PERFOR A CE CHARACTERISTICS
UW
T
A
= 25°C unless otherwise noted.
REF Output Line Regulation
TEMPERATURE (°C)
–50
THRESHOLD VOLTAGE, V
RT
(mV)
506
25
2919 G01
500
496
–25 0 50
494
492
508
504
502
498
75 100 125 150
TEMPERATURE (°C)
–50
THRESHOLD VOLTAGE VARIATION (% OF 25°C VALUE)
0.5
1.0
1.5
25 75
2919 G02
0
–0.5
–25 0
50 100 150125
–1.0
–1.5
TEMPERATURE (°C)
–50
REF VOLTAGE, V
REF
(V)
1.005
1.010
1.015
25 75
2919 G03
1.000
0.995
–25 0
50 100 150125
0.990
0.985
I
REF
= 0A
LOAD CURRENT (mA)
–1
–0.6
REF VOLTAGE, VARIATION (%OF NO LOAD AND 25°C VALUE)
–0.4
–0.2
0.0
0.2
0.4
0.6
V
CC
= 2.5V
–0.5 0 0.5 1
2919 G04
T
A
= 150°C
T
A
= 125°C
T
A
= 25°C
T
A
= –40°C
SUPPLY VOLTAGE (V)
2
–0.6
REF VOLTAGE VARIATION (% OF 2.5V SUPPLY AND 25°C VALUE)
–0.4
–0.2
0.0
0.2
0.4
0.6
I
REF
= 0A
34 56
2919 G05
T
A
= 150°C
T
A
= 125°C
T
A
= 25°C
T
A
= –40°C
TEMPERATURE (°C)
–50
QUIESCENT SUPPLY CURRENT, I
CC
(µA)
90
25
2919 G06
60
40
–25 0 50
30
20
80
70
50
75 100 150125
ADJ1 = 0.55V
ADJ2 = 0.45V
SEL = OPEN
V
CC
= 5V
V
CC
= 3.3V
V
CC
= 2.5V
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into pins are positive; all voltages are referenced to
GND unless otherwise noted.
Note 3: V
CC
maximum pin voltage is limited by input current. Since the
V
CC
pin has an internal 6.5V shunt regulator, a low impedance supply
which exceeds 6V may exceed the rated terminal current. Operation
from higher voltage supplies requires a series dropping resistor. See
Applications Information.
Note 4: Threshold voltages have no hysteresis unless the part is in
comparator mode. Hysteresis is one-sided, affecting only invalid-to-valid
transitions. See Applications Information.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
SEL(Z)
Allowable Leakage When Open
●
±5 µA
I
SEL
SEL Input Current SEL = V
CC
or SEL = GND
●
±17 ±25 µA
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
CC
= 2.5V (LTC2919-2.5), V
CC
= 3.3V (LTC2919-3.3), V
CC
= 5V
(LTC2919-5), ADJ1 = ADJ2 = 0.55V, SEL = fl oating, unless otherwise noted. (Note 2)
ELECTRICAL CHARACTERISTICS