LT3506 データシートの表示（PDF） - Linear Technology
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LT3506 Datasheet PDF : 24 Pages
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LT3506/LT3506A
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, VIN = 5V, VBOOST = 8V, unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VIN(MIN)
IINQ
IINSD
VFB
IFB
VFB(REG)
gmEA
AV
IVC
VVC(THRESH)
VVC(CLAMP)
fSW
Undervoltage Lockout
Quiescent Current
Shutdown Current
Feedback Voltage
FB Pin Bias Current
Reference Line Regulation
Error Amp GM
Error Amp Voltage Gain
VC Source Current
VC Sink Current
VC Switching Threshold
VC Clamp Voltage
Switching Frequency
Switching Phase
Not Switching
VRUNSS = 0V
–40°C to 85°C, EDHD
–40°C to 85°C, EFE
–40°C to 125°C, IFE, IDHD
VFB = 800mV, VC = 0.4V
VIN = 5V to 25V
VFB = 0.6V, VC = 0V
VFB = 1.2V, VC = 1100mV
LT3506
LT3506A
(Note 5)
●
3.4
3.6
V
3.8
4.8
mA
30
45
µA
● 792
800
808
mV
● 784
800
816
mV
● 784
800
816
mV
●
40
100
nA
0.005
%/V
350
uMhos
400
30
µA
30
µA
0.7
V
1.9
V
500
575
650
kHz
1
1.1
1.2
MHz
180
Deg
DC
VFB(SWTHRESH)
fFOLD
ISW
VSW(SAT)
ILSW
VBOOST(MIN)
IBOOST
IRUN/SS
VRUN/SS(THRESH)
VFB(PGTHRESH)
VPG(LOW)
ILPG
Maximum Duty Cycle
Frequency Shift Threshold on FB
Foldback Frequency
Switch Current Limit
Switch VCESAT (Note 4)
Switch Leakage Current
Minimum Boost Voltage Above Switch
BOOST Pin Current
RUN/SS Current
RUN/SS Threshold
VFB PG Threshold
PG Voltage Output Low
PG Pin Leakage
LT3506
LT3506A
VFB = 0V
(Note 3)
ISW = 1A
ISW = 1A
ISW = 1A
VFB Rising
VFB = 640mV, IPG = 250µA
VPG = 2V
89
93
%
78
88
%
0.4
V
170
kHz
2.0
2.6
3.6
A
210
mV
10
µA
1.5
2.5
V
20
30
mA
2.1
µA
0.3
0.8
V
720
mV
0.22
0.4
V
0.1
1
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 LT3506E/LT3506AE are guaranteed to meet performance
specifications from 0°C to 85°C. Specifications over the –40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls. The LT3506I/LT3506AI are
guaranteed and tested over the full –40°C to 125°C operating temperature
range.
Note 3: Current limit is guaranteed by design and/or correlation to static
test. Slope compensation reduces current limit at high duty cycle.
Note 4: Switch VCESAT guaranteed by design.
Note 5: Switching phase is guaranteed by design.
3506afb
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