参数资料
| 型号： | LT3082MPST#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .2A SOT-223 |
| 标准包装： | 2,000 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 可调 |
| 输入电压： | 1.2 V ~ 40 V |
| 电压 - 压降（标准）： | 1.3V @ 200mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 200mA（最小值） |
| 电流 - 限制（最小）： | 200mA |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-261-4，TO-261AA |
| 供应商设备封装： | SOT-223 |
| 包装： | 带卷 (TR) |
LT3082
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T J = 25°C. (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SET Pin Current
I SET
V IN = 2V, I LOAD = 1mA
2V ≤ V IN ≤ 40V, 1mA ≤ I LOAD ≤ 200mA
l
9.90
9.80
10
10
10.10
10.20
μA
μA
Offset Voltage (V OUT – V SET )
Load Regulation (Note 7)
Line Regulation
Minimum Load Current (Note 3)
Dropout Voltage (Note 4)
Current Limit
V OS
ΔI SET
ΔV OS
ΔI SET
ΔV OS
V IN = 2V, I LOAD = 1mA
V IN = 2V, I LOAD = 1mA
ΔI LOAD = 1mA to 200mA
ΔI LOAD = 1mA to 200mA
ΔV IN = 2V to 40V, I LOAD = 1mA
ΔV IN = 2V to 40V, I LOAD = 1mA
2V ≤ V IN ≤ 40V
I LOAD = 10mA
I LOAD = 200mA
V IN = 5V, V SET = 0V, V OUT = –0.1V
l
l
l
l
l
l
–2
–4
200
–0.1
–0.5
0.03
0.003
300
1.22
1.3
300
2
4
–2
0.2
0.010
500
1.45
1.65
mV
mV
nA
mV
nA/V
mV/V
μA
V
V
mA
Error Ampli?er RMS Output Noise (Note 5)
Reference Current RMS Output Noise (Note 5)
Ripple Rejection
I LOAD = 200mA, 10Hz ≤ f ≤ 100kHz, C OUT = 10μF,
C SET = 0.1μF
10Hz ≤ f ≤ 100kHz
f = 120Hz, V RIPPLE = 0.5V P-P , I LOAD = 0.1A,
C OUT = 2.2μF, C SET = 0.1μF
f = 10kHz
f = 1MHz
33
0.7
90
75
20
μV RMS
nA RMS
dB
dB
dB
Thermal Regulation
I SET
10ms Pulse
0.003
%/W
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: Unless otherwise speci?ed, all voltages are with respect to V OUT .
The LT3082E is tested and speci?ed under pulse load conditions such
that T J ? T A . The LT3082E is 100% tested at T A = 25°C. Performance at
–40°C and 125°C is assured by design, characterization, and correlation
with statistical process controls. The LT3082I is guaranteed to meet all
data sheet speci?cations over the full –40°C to 125°C operating junction
temperature range. The LT3082MP is 100% tested and guaranteed over
the –55°C to 125°C operating junction temperature range.
Note 3: Minimum load current is equivalent to the quiescent current of
the part. Since all quiescent and drive current is delivered to the output
of the part, the minimum load current is the minimum current required to
maintain regulation.
Note 4: For the LT3082, dropout is speci?ed as the minimum input-to-
output voltage differential required supplying a given output current.
Note 5: Adding a small capacitor across the reference current resistor
lowers output noise. Adding this capacitor bypasses the resistor shot
noise and reference current noise; output noise is then equal to error
ampli?er noise (see the Applications Information section).
Note 6: Diodes with series 1k resistors clamp the SET pin to the OUT pin.
These diodes and resistors only carry current under transient overloads.
Note 7: Load regulation is Kelvin-sensed at the package.
Note 8: This IC includes overtemperature protection that protects the
device during momentary overload conditions. Junction temperature
exceeds the maximum operating junction temperature when
overtemperature protection is active. Continuous operation above the
speci?ed maximum operating junction temperature may impair device
reliability.
3082f
3
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