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参数资料
| 型号： | LT3092MPST#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO3 |
| 封装： | LEAD FREE, PLASTIC, SOT-223, 4 PIN |
| 文件页数： | 16/22页 |
| 文件大小： | 245K |
| 代理商： | LT3092MPST#TRPBF |
LT3092
3
3092fb
ELECTRICAL CHARACTERISTICS
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 specied, all voltages are with respect to VOUT.
The LT3092E is tested and specied under pulse load conditions such
that TJ TA. The LT3092E is 100% tested at TA = 25°C. Performance at
–40°C and 125°C is assured by design, characterization, and correlation
with statistical process controls. The LT3092I is guaranteed to meet all
data sheet specications over the full –40°C to 125°C operating junction
temperature range. The LT3092MP 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.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SET Pin Current
ISET
VIN = 2V, ILOAD = 1mA
2V ≤ VIN ≤ 40V, 1mA ≤ ILOAD ≤ 200mA
l
9.9
9.8
10
10.1
10.2
μA
Offset Voltage (VOUT – VSET)
VOS
VIN = 2V, ILOAD = 1mA
l
–2
–4
2
4
mV
Current Regulation (Note 7)
ΔISET
ΔVOS
ΔILOAD = 1mA to 200mA
l
–0.1
–0.5
–2
nA
mV
Line Regulation
ΔISET
ΔVOS
ΔVIN = 2V to 40V, ILOAD = 1mA
0.03
0.003
0.2
0.010
nA/V
mV/V
Minimum Load Current (Note 3)
2V ≤ VIN ≤ 40V
l
300
500
μA
Dropout Voltage (Note 4)
ILOAD = 10mA
ILOAD = 200mA
l
1.22
1.3
1.45
1.65
V
Current Limit
VIN = 5V, VSET = 0V, VOUT = –0.1V
l
200
300
mA
Reference Current RMS Output Noise (Note 5)
10Hz ≤ f ≤ 100kHz
0.7
nARMS
Ripple Rejection
f = 120Hz, VRIPPLE = 0.5VP-P, ILOAD = 0.1A,
CSET = 0.1μF, COUT = 2.2μF
f = 10kHz
f = 1MHz
90
75
20
dB
Thermal Regulation
ISET
10ms Pulse
0.003
%/W
The
l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TJ = 25°C. (Note 2)
Note 4: For the LT3092, dropout is specied 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 (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: Current 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
specied maximum operating junction temperature may impair device
reliability.
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