参数资料
型号: LTC3803ES6#TRPBF
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC REG CTRLR FLYBK PWM TSOT23-6
标准包装: 2,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 240kHz
占空比: 90%
电源电压: 5.7 V ~ 8 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: SOT-23-6 细型,TSOT-23-6
包装: 带卷 (TR)
相关产品: 732-2263-6-ND - TRANS FLYBACK LTC3803 16.9UH
732-2263-1-ND - TRANS FLYBACK LTC3803 16.9UH
732-2263-2-ND - TRANS FLYBACK LTC3803 16.9UH
LTC3803
ELECTRICAL CHARACTERISTICS
The l denotes the speci?cations which apply over the full operating
junction temperature range, otherwise speci?cations are at T A = 25°C. V CC = 8V, unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V CLAMP1mA
V CLAMP25mA
V MARGIN
V CC Shunt Regulator Voltage at 1mA
V CC Shunt Regulator Voltage at 25mA
V CLAMP1mA – V TURNON Margin
I CC = 1mA, V ITH/RUN = 0V
LTC3803E
LTC3803H, LTC3803I
LTC3803MP
I CC = 25mA, V ITH/RUN = 0V
LTC3803E
LTC3803H, LTC3803I
LTC3803MP
LTC3803E
LTC3803H, LTC3803I, LTC3803MP
l
l
l
l
l
l
l
l
8.3
8.3
8
8.4
8.4
8.1
0.05
0.03
9.4
9.4
9.4
9.5
9.5
9.5
0.6
0.6
10.3
10.5
10.5
10.5
10.7
10.7
V
V
V
V
V
V
V
V
I CC
Input DC Supply Current in Normal
(Note 4)
Operation
V ITH/RUN = 1.3V
240
350
μA
I CC(UV)
Input DC Supply Current in Undervoltage
V CC = V TURNON – 100mV
LTC3803E
LTC3803H, LTC3803I, LTC3803MP
l
l
40
40
90
110
μA
μA
V ITHSHDN
I ITHSTART
Shutdown Threshold (at I TH /RUN)
Start-Up Current Source
V CC > V TURNON , V ITH/RUN Falling
LTC3803E
LTC3803H, LTC3803I, LTC3803MP
V ITH/RUN = 0V
l
l
0.15
0.09
0.2
0.28
0.28
0.3
0.45
0.46
0.4
V
V
μA
V FB
Regulated Feedback Voltage
(Note 5)
LTC3803E:
0°C ≤ T J ≤ 85°C
–40°C ≤ T J ≤ 85°C
l
0.788
0.780
0.800
0.800
0.812
0.816
V
V
LTC3803I:
0°C ≤ T J ≤ 85°C
–40°C ≤ T J ≤ 125°C
l
0.788
0.780
0.800
0.800
0.812
0.820
V
V
LTC3803H:
0°C ≤ T J ≤ 85°C
–40°C ≤ T J ≤ 150°C
l
0.788
0.780
0.800
0.800
0.812
0.820
V
V
LTC3803MP:
0°C ≤ T J ≤ 85°C
–55°C ≤ T J ≤ 150°C
l
0.788
0.780
0.800
0.800
0.812
0.820
V
V
g m
Δ V O(LINE)
Δ V O(LOAD)
I FB
f OSC
DC ON(MIN)
DC ON(MAX)
t RISE
t FALL
Error Ampli?er Transconductance
Output Voltage Line Regulation
Output Voltage Load Regulation
V FB Input Current
Oscillator Frequency
Minimum Switch On Duty Cycle
Maximum Switch On Duty Cycle
Gate Drive Rise Time
Gate Drive Fall Time
I TH/RUN Pin Load = ±5μA (Note 5)
(Note 5)
I TH /RUN Sinking 5μA (Note 5)
I TH /RUN Sourcing 5μA (Note 5)
(Note 5)
V ITH/RUN = 1.3V
V ITH/RUN = 1.3V, V FB = 0.8V
V ITH/RUN = 1.3V, V FB = 0.8V
C LOAD = 3000pF
C LOAD = 3000pF (Note 7)
200
180
70
333
0.05
3
3
10
200
6
80
40
40
500
50
240
8
90
μA/V
mV/V
mV/μA
mV/μA
nA
kHz
%
%
ns
ns
V IMAX
Peak Current Sense Voltage
R SL = 0 (Note 6)
LTC3803E
LTC3803H, LTC3803I
LTC3803MP
l
l
l
90
90
85
100
100
100
115
120
120
mV
mV
mV
I SLMAX
t SFST
Peak Slope Compensation Output Current
Soft-Start Time
(Note 7)
5
1.4
μA
ms
3803fc
3
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