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| 型号： | LT1579IGN#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC LDO REG SMART DUAL ADJ 16SSOP |
| 标准包装： | 2,500 |
| 功能： | 备份管理 |
| 电池化学： | 智能电池 |
| 工作温度： | 0°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 带卷 (TR) |
LT1579
ELECTRICAL CHARACTERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Regulated Output
LT1579-3
V IN1 = V IN2 = 3.5V, I LOAD = 1mA, T J = 25 ° C
2.950
3.000
3.050
V
Voltage (Note 1)
4V < V IN1 < 20V, 4V < V IN2 < 20V, 1mA < I LOAD < 300mA
LT1579-3.3 V IN1 = V IN2 = 3.8V, I LOAD = 1mA, T J = 25 ° C
4.3V < V IN1 < 20V, 4.3V < V IN2 < 20V, 1mA < I LOAD < 300mA
V IN1 = V IN2 = 5.5V, I LOAD = 1mA, T J = 25 ° C
LT1579-5
6V < V IN1 < 20V, 6V < V IN2 < 20V, 1mA < I LOAD < 300mA
q
q
q
2.900
3.250
3.200
4.925
4.850
3.000
3.300
3.300
5.000
5.000
3.100
3.350
3.400
5.075
5.150
V
V
V
V
V
Adjust Pin Voltage
Line Regulation
LT1579
LT1579-3
V IN1 = V IN2 = 3.2V, I LOAD = 1mA, T J = 25 ° C (Note 2)
3.7V < V IN1 < 20V, 3.7V < V IN2 < 20V, 1mA < I LOAD < 300mA
? V IN1 = 3.5V to 20V, ? V IN2 = 3.5V to 20V, I LOAD = 1mA
q
q
1.475
1.450
1.500
1.500
1.5
1.525
1.550
10
V
V
mV
LT1579-3.3 ? V IN1 = 3.8V to 20V, ? V IN2 = 3.8V to 20V, I LOAD = 1mA
q
1.5
10
mV
LT1579-5
LT1579
? V IN1 = 5.5V to 20V, ? V IN2 = 5.5V to 20V, I LOAD = 1mA
? V IN1 = 3.2V to 20V, ? V IN2 = 3.2V to 20V, I LOAD = 1mA (Note 2)
q
q
1.5
1.5
10
10
mV
mV
Load Regulation
LT1579-3
V IN1 = V IN2 = 4V, ? I LOAD = 1mA to 300mA, T J = 25 ° C
V IN1 = V IN2 = 4V, ? I LOAD = 1mA to 300mA
q
3
12
25
mV
mV
LT1579-3.3 V IN1 = V IN2 = 4.3V, ? I LOAD = 1mA to 300mA, T J = 25 ° C
V IN1 = V IN2 = 4.3V, ? I LOAD = 1mA to 300mA
q
3
12
25
mV
mV
LT1579-5
LT1579
V IN1 = V IN2 = 6V, ? I LOAD = 1mA to 300mA, T J = 25 ° C
V IN1 = V IN2 = 6V, ? I LOAD = 1mA to 300mA
V IN1 = V IN2 = 3.7V, ? I LOAD = 1mA to 300mA, T J = 25 ° C (Note 2)
V IN1 = V IN2 = 3.7V, ? I LOAD = 1mA to 300mA
q
q
5
2
15
35
10
20
mV
mV
mV
mV
Dropout Voltage
I LOAD = 10mA, T J = 25 ° C
0.10
0.28
V
(Notes 3, 4)
V IN1 = V IN2 =
V OUT(NOMINAL)
I LOAD = 10mA
I LOAD = 50mA, T J = 25 ° C
I LOAD = 50mA
q
q
0.18
0.39
0.35
0.45
V
V
V
I LOAD = 150mA, T J = 25 ° C
I LOAD = 150mA
I LOAD = 300mA, T J = 25 ° C
I LOAD = 300mA
q
q
0.25
0.34
0.47
0.60
0.60
0.75
V
V
V
V
Ground Pin Current
(Note 5)
V IN1 = V IN2 =
V OUT(NOMINAL) + 1V
Standby Current
(Note 6) I LOAD = 0mA
Shutdown Threshold
Shutdown Pin Current
I LOAD = 0mA, T J = 25 ° C
I LOAD = 0mA
I LOAD = 1mA, T J = 25 ° C
I LOAD = 1mA
I LOAD = 50mA
I LOAD = 150mA
I LOAD = 300mA
I VIN2 : V IN1 = 20V, V IN2 = V OUT(NOMINAL) + 0.5V, V SS = Open (HI)
I VIN1 : V IN1 = V OUT(NOMINAL) + 0.5V, V IN2 = 20V, V SS = 0V
V OUT = Off to On
V OUT = On to Off
V SHDN = 0V
q
q
q
q
q
q
q
q
q
q
0.25
50
100
0.7
2
5.8
3.3
2.0
0.9
0.75
1.3
100
400
200
500
1.5
4
12
7.0
7.0
2.8
5
μ A
μ A
μ A
μ A
mA
mA
mA
μ A
μ A
V
V
μ A
(Note 7)
Quiescent Current in
Shutdown (Note 9)
I VIN1 : V IN1 = 20V, V IN2 = 6V, V SHDN = 0V
I VIN2 : V IN1 = 6V, V IN2 = 20V, V SHDN = 0V
I SRC : V IN1 = V IN2 = 20V, V SHDN = 0V
q
q
5
5
3
12
12
μ A
μ A
μ A
3
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