参数资料
型号: LTC2919HDDB-2.5#PBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10
封装: 3 X 2 MM, LEAD FREE, PLASTIC, MO-229WECD-1, DFN-10
文件页数: 11/16页
文件大小: 195K
代理商: LTC2919HDDB-2.5#PBF
LTC2919
4
2919f
ADJ Threshold Voltage
vs Temperature
VCC 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
TA = 25°C unless otherwise noted.
REF Output Line Regulation
TEMPERATURE (°C)
–50
THRESHOLD
VOL
TAGE,
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
VOL
TAGE
V
ARIA
TION
(%
OF
25°C
V
ALUE)
0.5
1.0
1.5
25
75
2919 G02
0
–0.5
–25
0
50
100
150
125
–1.0
–1.5
TEMPERATURE (°C)
–50
REF
VOL
TAGE,
V
REF
(V) 1.005
1.010
1.015
25
75
2919 G03
1.000
0.995
–25
0
50
100
150
125
0.990
0.985
IREF = 0A
LOAD CURRENT (mA)
–1
–0.6
REF
VOL
TAGE,
V
ARIA
TION
(%OF
NO
LOAD
AND
25°C
V
ALUE)
–0.4
–0.2
0.0
0.2
0.4
0.6
VCC = 2.5V
–0.5
0
0.5
1
2919 G04
TA = 150°C
TA = 125°C
TA = 25°C
TA = –40°C
SUPPLY VOLTAGE (V)
2
–0.6
REF
VOL
TAGE
V
ARIA
TION
(%
OF
2.5V
SUPPL
Y
AND
25°C
V
ALUE)
–0.4
–0.2
0.0
0.2
0.4
0.6
IREF = 0A
34
5
6
2919 G05
TA = 150°C
TA = 125°C
TA = 25°C
TA = –40°C
TEMPERATURE (°C)
–50
QUIESCENT
SUPPL
Y
CURRENT
,I
CC
(μA)
90
25
2919 G06
60
40
–25
0
50
30
20
80
70
50
75
100
150
125
ADJ1 = 0.55V
ADJ2 = 0.45V
SEL = OPEN
VCC = 5V
VCC = 3.3V
VCC = 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: VCC maximum pin voltage is limited by input current. Since the
VCC 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
ISEL(Z)
Allowable Leakage When Open
±5
μA
ISEL
SEL Input Current
SEL = VCC or SEL = GND
±17
±25
μA
The denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VCC = 2.5V (LTC2919-2.5), VCC = 3.3V (LTC2919-3.3), VCC = 5V
(LTC2919-5), ADJ1 = ADJ2 = 0.55V, SEL = oating, unless otherwise noted. (Note 2)
ELECTRICAL CHARACTERISTICS
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