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參數(shù)資料
| 型號： | LT3682EDD#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO12 |
| 封裝： | 3 X 3 MM, LEAD FREE, PLASTIC, DFN-12 |
| 文件頁數(shù)： | 18/24頁 |
| 文件大?。?/td> | 253K |
| 代理商： | LT3682EDD#PBF |
LT3682
3
3682f
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 the device
reliability and lifetime.
Note 2: Absolute Maximum Voltage at VIN and RUN/SS pins is 60V for
nonrepetitive 1 second transients, and 36V for continuous operation.
Note 3: The LT3682E is guaranteed to meet performance specications from
0°C to 125°C junction temperature. Specications over the
40°C to 125°C
operating junction temperature range are assured by design, characterization
and correlation with statistical process controls. The LT3682I is guaranteed
over the full
40°C to 125°C operating junction temperature range.
The
l denotes specications which apply over the full operating temperature
range, otherwise specications are at TA = 25°C, VIN = 10V, VRUN/SS = 10V, VBD = 3.3V unless otherwise noted. (Note 3)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VC Source Current
50
μA
VC Sink Current
50
μA
VC Pin to Switch Current Gain
1.25
A/V
VC Switching Threshold
0.5
0.6
0.7
V
VC Clamp Voltage
2V
Switching Frequency
RRT = 8.06kΩ
RRT = 29.4kΩ
RRT = 158kΩ
1.98
0.9
225
2.2
1
250
2.42
1.1
275
MHz
kHz
Minimum Switch Off-Time
l
130
210
ns
Switch Current Limit (Note 7)
SYNC = 0V
SYNC = 3.3V or Clocked
1.45
1.18
1.7
1.4
2
1.66
A
Switch VCESAT
ISW = 1A
460
mV
DA Pin Current to Stop OSC
1.25
1.6
1.95
A
Switch Leakage Current
VSW = 0V, VIN = 60V
0.01
1
μA
Boost Schottky Diode Voltage Drop
IBSD = 50mA
720
850
mV
Boost Schottky Diode Reverse Leakage
VSW = 10V, VBD = 0
0.1
1
μA
Minimum Boost Voltage (Note 5)
l
1.7
2.5
V
BOOST Pin Current
ISW = 0.5A
10.5
17.5
mA
RUN/SS Pin Current
VRUN/SS = 10V
12
20
μA
RUN/SS Input Voltage High
2.5
V
RUN/SS Input Voltage Low
0.2
V
PG Leakage Current
VPG = 5V
0.1
1
μA
PG Sink Current
VPG = 0.4V
l
100
1000
μA
PG Threshold as % of VFB
Measured at FB pin. FB Pin Voltage Rising
88%
90%
92%
V
PG Threshold Hysteresis
Measured at FB Pin
12
mV
SYNC Threshold Voltage
300
550
800
mV
SYNC Input Frequency
0.3
2.2
MHz
Note 4: Bias current ows out of the FB pin.
Note 5: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the switch.
Note 6: This IC includes over-temperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum operating junction temperature
when over-temperature protection is active. Continuous operation above
the specied maximum operating junction temperature may impair device
reliability.
Note 7: Current limit guaranteed by design and/or correlation to static test.
Slope compensation reduces current limit at higher duty cycles.
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