LT3501EFE-TRPBF データシートの表示（PDF） - Linear Technology
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LT3501EFE-TRPBF Datasheet PDF : 30 Pages
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LT3501
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TJ = 25°C. VVIN1/2 = 15V, VBST1/2 = open, VRT/SYNC = 2V, VVOUT1/2 = open,
unless otherwise specified.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Feedback Bias Current Ch 1/Ch 2
Error Amplifier gm Ch 1/Ch 2
Error Amplifier Gain Ch 1/Ch 2
VFB1/2 = 0.8V, VVC1/2 = 1V
VVC1/2 = 1V, IVC1/2 = ±5µA
l –250
75
l 150
275
1000
250
nA
450 µmho
V/V
Error Amplifier to Switch Gain Ch 1/Ch 2
3.3
A/V
Error Amplifier Source Current Ch 1/Ch 2
VFB1/2 = 0.6V, VVC1/2 = 1V
10
15
25
µA
Error Amplifier Sink Current Ch 1/Ch 2
VFB1/2 = 1V, VVC1/2 = 1V
15
20
30
µA
Error Amplifier High Clamp Ch 1/Ch 2
VFB1/2 = 0.7V
1.75
2.0
2.25
V
Error Amplifier Switching Threshold Ch 1/Ch 2 VOUT1/2 = 5V, RT/SYNC = 133k
0.5
0.7
1
V
Soft-Start Source Current Ch 1/Ch 2
VFB1/2 = 0.6V, VSS1/2 = 0.4V
l
2
3
4.2
µA
Soft-Start VOH Ch 1/Ch 2
VFB1/2 = 0.9V
1.9
2
2.4
V
Soft-Start Sink Current Ch 1/Ch 2
VFB1/2 = 0.6V, VSS1/2 = 1V
200
600 1000
µA
Soft-Start VOL Ch 1/Ch 2
VFB1/2 = 0V
50
80
125
mV
Soft-Start to Feedback Offset Ch 1/Ch 2
VVC1/2 = 1V, VSS1/2 = 0.4V
l –16
0
16
mV
Soft-Start Sink Current Ch 1/Ch 2 POR
VSS1/2 = 0.4V (Note 4), VVC = 1V
0.5
1.5
2
mA
Soft-Start POR Threshold Ch 1/Ch 2
VFB1/2 = 0V (Note 4)
55
80
105
mV
Soft-Start Switching Threshold Ch 1/Ch 2
VFB1/2 = 0V
30
50
70
mV
Power Good Leakage Ch 1/Ch 2
VFB1/2 = 0.9V, VPG1/2 = 25V, VVIN1/2 = 25V
0
1
µA
Power Good Threshold Ch 1/Ch 2
VFB1/2 Rising, PG1/2 = 20k to 5V
l 87
90
93
%
Power Good Hysteresis Ch 1/Ch 2
VFB1/2 Falling, PG1/2 = 20k to 5V
20
30
50
mV
Power Good Sink Current Ch 1/Ch 2
VFB1/2 = 0.65V, VPG1/2 = 0.4V
400
800 1200
µA
Power Good Shutdown Sink Current Ch 1/Ch 2 VVIN1/2 = 2V, VFB1/2 = 0V, VPG1/2 = 0.4V
10
50
100
µA
RT/SYNC Reference Voltage
VFB1/2 = 0.9V, IRT/SYNC = –40µA
0.93 0.975
1
V
Switching Frequency
RT/SYNC = 133k, VFB1/2 = 0.6V, VBST1/2 = VSW + 3V
RT/SYNC = 15.4k, VFB1/2 = 0.6V, VBST1/2 = VSW + 3V
200
250
300
kHz
1.2
1.5
1.8
MHz
Switching Phase Angle Ch A to Ch B
RT/SYNC = 133k, VFB1/2 = 0.6V, VBST1/2 = VSW + 3V
120
180
210
Deg
Minimum Boost for 100% Duty Cycle Ch 1/Ch 2 VFB1/2 = 0.7V, IRT/SYNC = –35µA (Note 5), VOUT = 0V
1.7
2
V
SYNC Frequency Range
VBST1/2 = VSW + 3V
250
1500
kHz
SYNC Switching Phase Angle Ch A to Ch B
SYNC Frequency = 250kHz, VBST1/2 = VSW + 3V
120
180
210
Deg
IND + VOUT Current Ch 1/Ch 2
VVOUT1/2 = 0V, VFB1/2 = 0.9V
VVOUT1/2 = 5V
40
70
100
µA
0
1
µA
IND to VOUT Maximum Current Ch 1/Ch 2
VVOUT1/2 = 0.5V (Note 6), VFB1/2 = 0.7V, VBST1/2 = 20V
VVOUT1/2 = 5V (Note 6), RT/SYNC = 133k, VBST1/2 = 20V
3.25
4
5
A
3.5
4
5
A
Switch Leakage Current Ch 1/Ch 2
VSW1/2 = 0V, VVIN1/2 = 25V
l
0
50
µA
Switch Saturation Voltage Ch 1/Ch 2
ISW1/2 = 3A, VBST1/2 = 20V, VFB1/2 = 0.7V
l
250
600
mV
Boost Current Ch 1/Ch 2
ISW1/2 = 3A, VBST1/2 = 20V, VFB1/2 = 0.7V
25
60
100
mA
Minimum Boost Voltage Ch 1/Ch 2
ISW1/2 = 3A, VBST1/2 = 20V, VFB1/2 = 0.7V
1.4
2.5
V
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 LT3501EFE is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3501IFE is guaranteed and tested over the full –40°C to 125°C operating
junction temperature range.
Note 3: Minimum input voltage is defined as the voltage where internal
bias lines are regulated so that the reference voltage and oscillator remain
constant. Actual minimum input voltage to maintain a regulated output will
depend upon output voltage and load current. See Applications Information.
3501fd
3
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