參數(shù)資料
型號: LTC3803MPS6#TR
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 1 A SWITCHING CONTROLLER, 240 kHz SWITCHING FREQ-MAX, PDSO6
封裝: PLASTIC, MO-193, TSOT-23, 6 PIN
文件頁數(shù): 10/16頁
文件大小: 164K
代理商: LTC3803MPS6#TR
LTC3803
3
3803fc
ELECTRICAL CHARACTERISTICS The l denotes the specications which apply over the full operating
junction temperature range, otherwise specications are at TA = 25°C. VCC = 8V, unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCLAMP1mA
VCC Shunt Regulator Voltage at 1mA
ICC = 1mA, VITH/RUN = 0V
LTC3803E
LTC3803H, LTC3803I
LTC3803MP
l
8.3
8
9.4
10.3
10.5
V
VCLAMP25mA
VCC Shunt Regulator Voltage at 25mA
ICC = 25mA, VITH/RUN = 0V
LTC3803E
LTC3803H, LTC3803I
LTC3803MP
l
8.4
8.1
9.5
10.5
10.7
V
VMARGIN
VCLAMP1mA – VTURNON Margin
LTC3803E
LTC3803H, LTC3803I, LTC3803MP
l
0.05
0.03
0.6
V
ICC
Input DC Supply Current in Normal
Operation
(Note 4)
VITH/RUN = 1.3V
240
350
μA
ICC(UV)
Input DC Supply Current in Undervoltage
VCC = VTURNON – 100mV
LTC3803E
LTC3803H, LTC3803I, LTC3803MP
l
40
90
110
μA
VITHSHDN
Shutdown Threshold (at ITH/RUN)
VCC > VTURNON, VITH/RUN Falling
LTC3803E
LTC3803H, LTC3803I, LTC3803MP
l
0.15
0.09
0.28
0.45
0.46
V
IITHSTART
Start-Up Current Source
VITH/RUN = 0V
0.2
0.3
0.4
μA
VFB
Regulated Feedback Voltage
(Note 5)
LTC3803E:
0°C ≤ TJ ≤ 85°C
–40°C ≤ TJ ≤ 85°C
LTC3803I:
0°C ≤ TJ ≤ 85°C
–40°C ≤ TJ ≤ 125°C
LTC3803H:
0°C ≤ TJ ≤ 85°C
–40°C ≤ TJ ≤ 150°C
LTC3803MP:
0°C ≤ TJ ≤ 85°C
–55°C ≤ TJ ≤ 150°C
l
0.788
0.780
0.788
0.780
0.788
0.780
0.788
0.780
0.800
0.812
0.816
0.812
0.820
0.812
0.820
0.812
0.820
V
gm
Error Amplier Transconductance
ITH/RUN Pin Load = ±5μA (Note 5)
200
333
500
μA/V
ΔVO(LINE)
Output Voltage Line Regulation
(Note 5)
0.05
mV/V
ΔVO(LOAD)
Output Voltage Load Regulation
ITH/RUN Sinking 5μA (Note 5)
ITH/RUN Sourcing 5μA (Note 5)
3
mV/μA
IFB
VFB Input Current
(Note 5)
10
50
nA
fOSC
Oscillator Frequency
VITH/RUN = 1.3V
180
200
240
kHz
DCON(MIN)
Minimum Switch On Duty Cycle
VITH/RUN = 1.3V, VFB = 0.8V
6
8
%
DCON(MAX)
Maximum Switch On Duty Cycle
VITH/RUN = 1.3V, VFB = 0.8V
70
80
90
%
tRISE
Gate Drive Rise Time
CLOAD = 3000pF
40
ns
tFALL
Gate Drive Fall Time
CLOAD = 3000pF (Note 7)
40
ns
VIMAX
Peak Current Sense Voltage
RSL = 0 (Note 6)
LTC3803E
LTC3803H, LTC3803I
LTC3803MP
l
90
85
100
115
120
mV
ISLMAX
Peak Slope Compensation Output Current
(Note 7)
5
μA
tSFST
Soft-Start Time
1.4
ms
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