参数资料
型号: LT1521CS8-3.3
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC REG LDO 3.3V .3A 8-SOIC
标准包装: 100
稳压器拓扑结构: 正,固定式
输出电压: 3.3V
输入电压: 4.3 V ~ 20 V
电压 - 压降(标准): 0.5V @ 300mA
稳压器数量: 1
电流 - 输出: 300mA
电流 - 限制(最小): 320mA
工作温度: 0°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOIC
包装: 管件
LT1521/LT1521-3
LT1521-3.3/LT1521-5
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Regulated Output Voltage
LT1521-3
V IN = 3.5V, I OUT = 1mA, T J = 25 ° C
2.950
3.000
3.050
V
(Note 4)
4V < V IN < 20V, 1mA < I OUT < 300mA
LT1521-3.3 V IN = 3.8V, I OUT = 1mA, T J = 25 ° C
4.3V < V IN < 20V, 1mA < I OUT < 300mA
LT1521-5 V IN = 5.5V, I OUT = 1mA, T J = 25 ° C
6V < V IN < 20V, 1mA < I OUT < 300mA
LT1521 (Note 5) V IN = 4.3V, I OUT = 1mA, T J = 25 ° C
4.8V < V IN < 20V, 1mA < I OUT < 300mA
q
q
q
q
2.900
3.250
3.200
4.925
4.850
3.695
3.640
3.000
3.300
3.300
5.000
5.000
3.750
3.750
3.100
3.350
3.400
5.075
5.150
3.805
3.860
V
V
V
V
V
V
V
Line Regulation
Load Regulation
LT1521-3
LT1521-3.3
LT1521-5
LT1521 (Note 5)
LT1521-3
LT1521-3.3
LT1521-5
LT1521 (Note 5)
LT1521-3
LT1521-3.3
LT1521-5
LT1521 (Note 5)
? V IN = 4.5 to 20V, I OUT = 1mA
? V IN = 4.8 to 20V, I OUT = 1mA
? V IN = 5.5 to 20V, I OUT = 1mA
? V IN = 4.3 to 20V, I OUT = 1mA
? I LOAD = 1mA to 300mA, T J ≤ 25 ° C
? I LOAD = 1mA to 300mA, T J ≤ 25 ° C
? I LOAD = 1mA to 300mA, T J ≤ 25 ° C
? I LOAD = 1mA to 300mA, T J ≤ 25 ° C
? I LOAD = 1mA to 300mA, T J >25 ° C
? I LOAD = 1mA to 300mA, T J > 25 ° C
? I LOAD = 1mA to 300mA, T J > 25 ° C
? I LOAD = 1mA to 300mA, T J > 25 ° C
q
q
q
q
1.5
1.5
1.5
1.5
– 20
– 20
– 25
– 20
– 20
– 20
– 25
– 20
20
20
20
20
– 30
– 30
– 45
– 30
– 55
– 55
– 75
– 55
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
Dropout Voltage (Note 6)
I LOAD = 1mA, T J = 25 ° C
I LOAD = 1mA
I LOAD = 50mA, T J = 25 ° C
I LOAD = 50mA
I LOAD = 100mA, T J = 25 ° C
I LOAD = 100mA
I LOAD = 150mA, T J = 25 ° C
I LOAD = 150mA
I LOAD = 300mA, T J = 25 ° C
I LOAD = 300mA
q
q
q
q
q
130
290
350
400
500
170
250
350
450
420
550
470
600
600
750
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
Ground Pin Current (Note 7)
Adjust Pin Bias Current (Notes 5, 8)
Shutdown Threshold
Shutdown Pin Current (Note 9)
Quiescent Current in Shutdown (Note 10)
Ripple Rejection
I LOAD = 0mA
I LOAD = 1mA
I LOAD = 10mA
I LOAD = 50mA
I LOAD = 100mA
I LOAD = 150mA
I LOAD = 300mA
T J = 25 ° C
V OUT = Off to On
V OUT = On to Off
V SHDN = 0V
V IN = V OUT (NOMINAL) + 1V, V SHDN = 0V
V IN – V OUT = 1V(Avg), V RIPPLE = 0.5V P–P ,
q
q
q
q
q
q
q
q
q
q
q
0.25
50
12
65
300
0.8
1.4
2.2
6.5
50
1.20
0.75
2.0
6
58
25
100
450
1.5
2.5
4.0
12.0
100
2.80
5.0
12
μ A
μ A
μ A
mA
mA
mA
mA
nA
V
V
μ A
μ A
dB
f RIPPLE = 120Hz, I LOAD = 150mA
Current Limit
V IN – V OUT = 7V, T J = 25 ° C
V IN = V OUT (NOMINAL) + 1.5V, ? V OUT = – 0.1V
q
320
400
400
800
mA
mA
1521335fb
3
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