参数资料
型号: LT3500EMSE#PBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: 3.5 A SWITCHING REGULATOR, 2800 kHz SWITCHING FREQ-MAX, PDSO16
封装: LEAD FREE, PLASTIC, MSOP-16
文件页数: 22/28页
文件大小: 318K
代理商: LT3500EMSE#PBF
LT3500
3
3500fc
The
l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TJ = 25°C. VVIN = 15V, VRT/SYNC = 2V, unless otherwise specied.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SHDN Threshold
l
710
760
780
mV
SHDN Source Current
VSHDN = 0.62V
1.5
2.5
3.5
μA
SHDN Current Hysterisis
1.25
2
3.25
μA
Minimum Input Voltage (Note 3)
VFB = 0V
l
2.4
2.8
V
Supply Shutdown Current
VSHDN = 0V
l
12
30
μA
Supply Quiescent Current
VFB = 0.9V
2.5
3.5
mA
FB Voltage
VVC = 1V
VVC = 0.8V to 1.6V, VIN = 3V to 40V
l
0.784
0.776
0.8
0.816
0.824
V
FB Bias Current
VFB = 0.8V, VVC = 1V
50
150
nA
Error Amplier gm
VVC = 1V, IVC = ±10μA
150
250
350
μmho
Error Amplier Source Current
VFB = 0.6V, VVC = 1V
12
16
20
μA
Error Amplier Sink Current
VFB = 1V, VVC = 1V
14
18
22
μA
Error Amplier High Clamp
VFB = 0.6V
1.8
2.0
2.2
V
Error Amplier Switching Threshold
VFB = 0.6V
0.6
0.8
1.0
V
SS Source Current
VSS = 0.4V, VFB = 0.9V
2.25
2.75
3.75
μA
SS Sink Current
VFB = 0V, VSS = 2V
300
600
900
μA
SS POR Sink Current (Note 4)
VFB = 0V, VSS = 2V, Cycle SHDN
400
600
800
μA
SS POR Threshold
50
100
150
mV
SS to FB Offset (VSS – VFB)VVC = VFS, VSS = 0.4V
70
100
120
mV
PG/PG Leakage
VFB = 0.9V, VPG/VPG = 40V
0.1
1
μA
PG/PG Threshold (Rising)
VPG = 0.4V
0.685
0.708
0.730
V
PG/PG Hysteresis (Falling)
VPG = 0.4V
20
30
40
mV
PG Sink Current
VPG = 0.4V, VFB = 0.7V
250
500
750
μA
PG Sink Current
VPG = 0.4V, VFB = 0.9V
500
800
1100
μA
RT/SYNC Reference Voltage
VFB = 0.9V, RRT/SYNC = 15k
0.75
0.850
0.975
V
Switching Frequency
RRT/SYNC = 90.9k
RRT/SYNC = 15k
l
450
425
2
500
2.4
550
625
2.8
kHz
MHz
SYNC Frequency Range
l
250
2500
kHz
Minimum Switch On Time
VFB = 0.7V, RRT/SYNC = 90.9k
140
ns
Minimum Switch Off Time
VFB = 0.7V, RRT/SYNC = 90.9k
120
ns
Switch Leakage Current
VSW = 0V
1
10
μA
Switch Saturation Voltage
ISW = 2A, VBST = 18V, VFB = 0.7V
450
mV
Switch Peak Current DD Package
VBST = 18V, VFB = 0.7V
l
2.3
2.1
2.8
3.5
A
Switch Peak Current MSE Package
VBST = 18V, VFB = 0.7V
l
2.3
2.1
2.9
3.5
3.7
A
Boost Current
ISW = 2A, VBST = 20V, VFB = 0.7V
20
30
45
mA
Minimum Boost Voltage (Note 5)
ISW = 2A, VFB = 0.7V
2.2
3
V
ELECTRICAL CHARACTERISTICS
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