參數(shù)資料
型號(hào)： LT1249IS8#PBF
廠商： Linear Technology
文件頁(yè)數(shù)： 2/12頁(yè)
文件大?。?/td> 197K
描述： IC PFC CTRLR AVERAGE CURR 8SOIC
標(biāo)準(zhǔn)包裝： 100
模式： 平均電流
頻率 - 開(kāi)關(guān)： 100kHz
電流 - 啟動(dòng)： 250µA
電源電壓： 15.5 V ~ 27 V
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SOIC
包裝： 管件
產(chǎn)品目錄頁(yè)面： 1338 (CN2011-ZH PDF)
2
LT1249
ABSOLUTE MAXIMUM RATINGS
W
W
PACKAGE/ORDER INFORMATION
U
U
Supply Voltage ....................................................... 27V
GTDR Current Continuous ..................................... 0.5A
GTDR Output Energy (Per Cycle)............................. 5礘
I
AC
 Input Current ................................................. 20mA
V
SENSE
 Input Voltage ............................................ V
MAX
M
OUT
 Input Current.............................................. ?mA
Operating Junction Temperature Range
LT1249C................................................0癈 to 100癈
LT1249I ........................................... 40癈 to 125癈
Thermal Resistance (Junction-to-Ambient)
N8 Package ................................................ 100癈/W
S8 Package................................................. 120癈/W
Storage Temperature Range ..................65癈 to 150癈
Lead Temperature (Soldering, 10 sec)................. 300癈
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the operating temperature
range, otherwise specifications are at T
A
 = 25?/SPAN>C. Maximum operating voltage (V
MAX
) = 25V, V
CC
 = 18V, I
AC
 = 100?/SPAN>A, CA
OUT
 = 3.5V,
VA
OUT
 = 5V, no load on any outputs, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Overall
Supply Current (V
CC
 in Undervoltage Lockout)
V
CC
 = Lockout Voltage  0.2V
q
0.25
0.45
mA
Supply Current, On
11.5V d V
CC
 d V
MAX
, CA
OUT
 = 1V
q
9
12
mA
V
CC
 Turn-On Threshold
q
15.5
16.5
17.5
V
V
CC
 Turn-Off Threshold
q
9.5
10.5
11.5
V
Voltage Amplifier
V
SENSE
 Bias Current
V
SENSE
 = 0V to 7V
q
25
250
nA
Voltage Amp Gain
70
100
dB
Voltage Amp Unity-Gain Bandwidth
1.5
MHz
Voltage Amp Output High
0 d Source Current d 50礎(chǔ)
q
10
12
V
Voltage Amp Output Low
0 d Sink Current d 5礎(chǔ)
q
0.1
0.4
V
Voltage Amp Source Current
q
130
260
450
礎(chǔ)
Voltage Amp Sink Current Threshold
Linear Operation, 2V < VA
OUT
 < 10V
q
33
44
57
礎(chǔ)
Voltage Amp Sink Current Hysteresis
2V < VA
OUT
 < 10V
q
14
22.5
30
礎(chǔ)
Current Amplifier
Current Amp Offset Voltage
q
?
?5
mV
Current Amp Transconductance
I
CAOUT
 = ?0礎(chǔ)
q
150
320
550
祄ho
Current Amp Voltage Gain
2.5V d V
CAOUT
 d 7.5V
500
1000
V/V
Current Amp Source Current
V
MOUT
 = 1V, I
M
 = 0礎(chǔ)
100
145
220
礎(chǔ)
Current Amp Sink Current
V
MOUT
 = 0.3V, I
M
 = 0礎(chǔ)
67
95
125
礎(chǔ)
Current Amp Output High
7.4
8.1
V
Current Amp Output Low
1.2
2
V
ORDER PART
NUMBER
T
JMAX
 = 125癈, ?/DIV>
JA
 = 100癈/W (N8)
T
JMAX
 = 125癈, ?/DIV>
JA
 = 120癈/W (S8)
Consult factory for Military grade parts.
LT1249CN8
LT1249IN8
LT1249CS8
LT1249IS8
S8 PART
MARKING
1249
1249I
1
2
3
4
8
7
6
5
TOP VIEW
GND
CA
OUT
M
OUT
I
AC
GTDR
V
CC
V
SENSE
VA
OUT
S8 PACKAGE
8-LEAD PLASTIC SO
N8 PACKAGE
8-LEAD PDIP
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