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LT1121 Datasheet(PDF) 4 Page - Linear Dimensions Semiconductor

Part # LT1121
Description  500mA, Low Voltage, Very Low Dropout Linear Regulator
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Manufacturer  LINEAR_DIMENSIONS [Linear Dimensions Semiconductor]
Direct Link  http://www.lineardimensions.com
Logo LINEAR_DIMENSIONS - Linear Dimensions Semiconductor

LT1121 Datasheet(HTML) 4 Page - Linear Dimensions Semiconductor

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LT3021/LT3021-1.2/
LT3021-1.5/LT3021-1.8
4
3021fc
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TJ = 25°C.
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Minimum Input Voltage
(Notes 5,14)
ILOAD = 500mA, TJ > 0°C
ILOAD = 500mA, TJ < 0°C
0.9
0.9
1.05
1.10
V
V
ADJ Pin Voltage (Notes 4, 5)
VIN = 1.5V, ILOAD = 1mA
1.15V < VIN < 10V, 1mA < ILOAD < 500mA
l
196
193
200
200
204
206
mV
mV
Regulated Output Voltage
(Note 4)
LT3021-1.2
VIN = 1.5V, ILOAD = 1mA
1.5V < VIN < 10V, 1mA < ILOAD < 500mA
l
1.176
1.157
1.200
1.200
1.224
1.236
V
V
LT3021-1.5
VIN = 1.8V, ILOAD = 1mA
1.8V < VIN < 10V, 1mA < ILOAD < 500mA
l
1.470
1.447
1.500
1.500
1.530
1.545
V
V
LT3021-1.8
VIN = 2.1V, ILOAD = 1mA
2.1V < VIN < 10V, 1mA < ILOAD < 500mA
l
1.764
1.737
1.800
1.800
1.836
1.854
V
V
Line Regulation (Note 6)
LT3021
ΔVIN = 1.15V to 10V, ILOAD = 1mA
LT3021-1.2
ΔVIN = 1.5V to 10V, ILOAD = 1mA
LT3021-1.5
ΔVIN = 1.8V to 10V, ILOAD = 1mA
LT3021-1.8
ΔVIN = 2.1V to 10V, ILOAD = 1mA
l
l
l
l
–1.75
–10.5
–13
–15.8
0
0
0
0
+1.75
10.5
13
15.8
mV
mV
mV
mV
Load Regulation (Note 6)
LT3021
VIN = 1.15V, ΔILOAD = 1mA to 500mA
LT3021-1.2
VIN = 1.5V, ΔILOAD = 1mA to 500mA
LT3021-1.5
VIN = 1.8V, ΔILOAD = 1mA to 500mA
LT3021-1.8
VIN = 2.1V, ΔILOAD = 1mA to 500mA
–2
–6
–7.5
–9
0.4
1
1.5
2
2
6
7.5
9
mV
mV
mV
mV
Dropout Voltage (Notes 7, 12)
ILOAD = 10mA
ILOAD = 10mA
l
45
75
110
mV
mV
ILOAD = 500mA
ILOAD = 500mA
l
155
190
285
mV
mV
GND Pin Current
VIN = VOUT(NOMINAL) + 0.4V
(Notes 8, 12)
ILOAD = 0mA
ILOAD = 10mA
ILOAD = 100mA
ILOAD = 500mA
l
l
110
920
2.25
6.20
250
10
μA
μA
mA
mA
Output Voltage Noise
COUT = 4.7μF, ILOAD = 500mA, BW = 10Hz to 100kHz, VOUT = 1.2V
300
μVRMS
ADJ Pin Bias Current
VADJ = 0.2V, VIN = 1.2V (Notes 6, 9)
20
50
nA
Shutdown Threshold
VOUT = Off to On
VOUT = On to Off
l
l
0.25
0.61
0.61
0.9
V
V
SHDN Pin Current (Note 10)
VSHDN = 0V, VIN = 10V
VSHDN = 10V, VIN = 10V
l
l
3
±1
9.5
μA
μA
Quiescent Current in Shutdown
VIN = 6V, VSHDN= 0V
3
9
μA
Ripple Rejection (Note 6)
LT3021
VIN – VOUT = 1V, VRIP = 0.5VP-P, fRIPPLE = 120Hz,
ILOAD = 500mA
70
dB
LT3021-1.2
VIN – VOUT = 1V, VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz,
ILOAD = 500mA
60
dB
LT3021-1.5
VIN – VOUT = 1V, VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz,
ILOAD = 500mA
58
dB
LT3021-1.8
VIN – VOUT = 1V, VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz,
ILOAD = 500mA
56
dB
Current Limit (Note 12)
VIN = 10V, VOUT = 0V
VIN = VOUT(NOMINAL) + 0.5V, ΔVOUT = –5%
l
550
1.8
A
mA
Input Reverse Leakage Current
VIN = –10V, VOUT = 0V
1
20
μA
Reverse Output Current
(Notes 11, 13)
LT3021
VOUT = 1.2V, VIN = 0V
LT3021-1.2
VOUT = 1.2V, VIN = 0V
LT3021-1.5
VOUT = 1.5V, VIN = 0V
LT3021-1.8
VOUT = 1.8V, VIN = 0V
0.5
10
10
10
5
15
15
15
μA
μA
μA
μA


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