LT1121HV(RevB) データシートの表示（PDF） - Linear Technology
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LT1121HV Datasheet PDF : 16 Pages
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LT1121/LT1121-3.3/LT1121-5
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the operating temperature
range, otherwise specifications are at TA = 25°C.
PARAMETER
CONDITIONS
MIN TYP MAX
UNITS
Regulated Output Voltage
(Note 4)
LT1121-3.3
VIN = 3.8V, IOUT = 1mA, TJ = 25°C
3.250 3.300 3.350
V
4.3V < VIN < 20V, 1mA < IOUT < 150mA q 3.200 3.300 3.400
V
LT1121-5
VIN = 5.5V, IOUT = 1mA, TJ = 25°C
4.925 5.000 5.075
V
6V < VIN < 20V, 1mA < IOUT < 150mA q 4.850 5.000 5.150
V
LT1121 (Note 5) VIN = 4.3V, IOUT = 1mA, TJ = 25°C
3.695 3.750 3.805
V
4.8V < VIN < 20V, 1mA < IOUT < 150mA q 3.640 3.750 3.860
V
Line Regulation
LT1121-3.3
∆VIN = 4.8V to 20V, IOUT = 1mA
q
1.5
10
mV
LT1121-5
∆VIN = 5.5V to 20V, IOUT = 1mA
q
1.5
10
mV
LT1121 (Note 5) ∆VIN = 4.3V to 20V, IOUT = 1mA
q
1.5
10
mV
Load Regulation
LT1121-3.3
∆ILOAD = 1mA to 150mA, TJ = 25°C
∆ILOAD = 1mA to 150mA
q
– 12 – 25
mV
– 20 – 40
mV
LT1121-5
∆ILOAD = 1mA to 150mA, TJ = 25°C
∆ILOAD = 1mA to 150mA
q
– 17 – 35
mV
– 28 – 50
mV
LT1121 (Note 5) ∆ILOAD = 1mA to 150mA, TJ = 25°C
∆ILOAD = 1mA to 150mA
q
– 12 – 25
mV
– 18 – 40
mV
Dropout Voltage
(Note 6)
ILOAD = 1mA, TJ = 25°C
ILOAD = 1mA
0.13 0.16
V
q
0.25
V
ILOAD = 50mA, TJ = 25°C
LOAD = 50mA
0.30 0.35
V
q
0.50
V
ILOAD = 100mA, TJ = 25°C
ILOAD = 100mA
0.37 0.45
V
q
0.60
V
ILOAD = 150mA, TJ = 25°C
ILOAD = 150mA
0.42 0.55
V
q
0.70
V
Ground Pin Current
ILOAD = 0mA
q
30
50
µA
(Note 7)
ILOAD = 1mA
q
90
120
µA
ILOAD = 10mA
q
350 500
µA
ILOAD = 50mA
q
1.5
2.5
mA
ILOAD = 100mA
q
4.0
7.0
mA
ILOAD = 150mA
q
7.0
14.0
mA
Adjust Pin Bias Current (Notes 5, 8)
TJ = 25°C
150 300
nA
Shutdown Threshold
VOUT = Off to On
VOUT = On to Off
q
1.2
2.8
V
q 0.25 0.75
V
Shutdown Pin Current (Note 9)
VSHDN = 0V
q
6
10
µA
Quiescent Current in Shutdown (Note 10) VIN = 6V, VSHDN = 0V
q
15
22
µA
Ripple Rejection
VIN – VOUT = 1V (Avg), VRIPPLE = 0.5VP-P,
fRIPPLE = 120Hz, ILOAD = 0.1A
50
58
dB
Current Limit
VIN – VOUT = 7V, TJ = 25°C
200 500
mA
Input Reverse Leakage Current
VIN = –20V, VOUT = 0V
q
1.0
mA
Reverse Output Current (Note 11)
LT1121-3.3
LT1121-5
LT1121 (Note 5)
VOUT = 3.3V, VIN = 0V
VOUT = 5V, VIN = 0V
VOUT = 3.8V, VIN = 0V
16
25
µA
16
25
µA
16
25
µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The shutdown pin input voltage rating is required for a low
impedance source. Internal protection devices connected to the shutdown
pin will turn on and clamp the pin to approximately 7V or – 0.6V. This
range allows the use of 5V logic devices to drive the pin directly. For high
3
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