LT3008 Ver la hoja de datos (PDF) - Linear Technology
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LT3008 Datasheet PDF : 16 Pages
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LT3008
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TJ = 25°C. (Note 2)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Operating Voltage
l
2
45
V
ADJ Pin Voltage (Notes 3, 4)
Line Regulation (Note 3)
VIN = 2V, ILOAD = 100μA
2V < VIN < 45V, 1μA < ILOAD < 20mA
ΔVIN = 2V to 45V, ILOAD = 1mA
594
600
606
mV
l 588
600
612
mV
l
0.6
3
mV
Load Regulation (Note 3)
Dropout Voltage
VIN = VOUT(NOMINAL) (Notes 5, 6)
Quiescent Current (Notes 6, 7)
GND Pin Current
VIN = VOUT(NOMINAL) + 0.5V (Notes 6, 7)
Output Voltage Noise (Note 9)
ADJ Pin Bias Current
VIN = 2V, ILOAD = 1μA to 10mA
l
VIN = 2V, ILOAD = 1μA to 20mA
l
ILOAD = 100μA
ILOAD = 100μA
l
ILOAD = 1mA
ILOAD = 1mA
l
ILOAD = 10mA
ILOAD = 10mA
l
ILOAD = 20mA
ILOAD = 20mA
l
ILOAD = 0μA
ILOAD = 0μA
l
ILOAD = 0μA
l
ILOAD = 100μA
l
ILOAD = 1mA
l
ILOAD = 10mA
l
ILOAD = 20mA
l
COUT = 2.2μF, ILOAD = 20mA, BW = 10Hz to 100kHz
l –10
0.4
2
mV
0.5
5
mV
115
180
mV
250
mV
170
250
mV
350
mV
270
340
mV
470
mV
300
365
mV
500
mV
3
μA
6
μA
3
6
μA
6
12
μA
21
50
μA
160
500
μA
350 1200
μA
92
μVRMS
0.4
10
nA
Shutdown Threshold
SHDN Pin Current
Quiescent Current in Shutdown
Ripple Rejection (Note 3)
Current Limit
Input Reverse Leakage Current
Reverse Output Current
VOUT = Off to On
VOUT = On to Off
VSHDN = 0V, VIN = 45V
VSHDN = 45V, VIN = 45V
VIN = 6V, VSHDN = 0V
VIN – VOUT = 1.5V, VRIPPLE = 0.5VP-P,
fRIPPLE = 120Hz, ILOAD = 20mA
VIN = 45V, VOUT = 0
VIN = VOUT(NOMINAL) + 1V, ΔVOUT = – 5%
VIN = –45V, VOUT = 0
VOUT = 1.2V, VIN = 0
l
0.67
1.5
V
l 0.25 0.61
V
l
±1
μA
l
0.65
2
μA
l
<1
μA
58
70
dB
75
mA
l 22
mA
l
1
30
μA
0.6
10
μA
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: The LT3008 is tested and specified under pulse load conditions
such that TJ ≅ TA. The LT3008E 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 LT3008I is guaranteed over the full
– 40°C to 125°C operating junction temperature range.
Note 3: The LT3008 adjustable version is tested and specified for these
conditions with the ADJ pin connected to the OUT pin.
Note 4: Operating conditions are limited by maximum junction
temperature. The regulated output voltage specification will not apply
for all possible combinations of input voltage and output current. When
operating at the maximum input voltage, the output current range must be
limited. When operating at the maximum output current, the input voltage
must be limited.
Note 5: Dropout voltage is the minimum input to output voltage differential
needed to maintain regulation at a specified output current. In dropout, the
output voltage equals (VIN – VDROPOUT).
3008f
3
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