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参数资料
| 型号： | LT1508ISW#TR |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | POWER FACTOR CONTROLLER WITH POST REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | 0.300 INCH, PLASTIC, SO-20 |
| 文件页数： | 9/16页 |
| 文件大小： | 300K |
| 代理商： | LT1508ISW#TR |
2
LT1508
By using fixed high frequency PWM current averaging
without the need for slope compensation, the LT1508
achieves far lower line current distortion with a smaller
magnetic element than systems that use either peak
current detection, or zero current switching approach, in
both continuous and discontinuous modes of operation.
The LT1508 also provides filtering capability to reject line
DESCRIPTION
U
switching noise which can cause instability when fed into
the multiplier. Line current dead zone is minimized with
low bias voltage at the current input to the multiplier. The
LT1508 provides many protection features including peak
current limiting and overvoltage protection. Implemented
with a very high speed process, the LT1508 can be
operated at frequencies as high as 300kHz.
ABSOLUTE MAXIMUM RATINGS
W
WW
U
Supply Voltage ........................................................ 27V
GTDR Current Continuous ...................................... 0.5A
GTDR Output Energy ................................................ 5
J
IAC, RSET, PKLIM Input Current .............................. 20mA
VSENSE, OVP Input Voltage .................................... VMAX
ILIM, VC Input Voltage ................................................ 8V
ISENSE, MOUT Input Current ................................... ±5mA
Operating Junction Temperature Range
LT1508C ................................................ 0
°C to 100°C
LT1508I ............................................ – 40
°C to 125°C
Thermal Resistance (Junction-to-Ambient)
N Package ................................................... 100
°C/W
SW Package ................................................ 120
°C/W
PACKAGE/ORDER INFORMATION
W
U
Consult factory for Military grade parts.
1
2
3
4
5
6
7
8
9
10
TOP VIEW
SW PACKAGE
20-LEAD PLASTIC SO WIDE
N PACKAGE
20-LEAD PDIP
20
19
18
17
16
15
14
13
12
11
GTDR1
GND2
GND1
CSET
PKLIM
CAOUT
ISENSE
MOUT
IAC
VAOUT
GTDR2
ILIM
VC
VCC
SS1
RSET
VSENSE
SS2
VREF
OVP
TJMAX = 125°C, θJA = 100°C/ W (N)
TJMAX = 125°C, θJA = 120°C/ W (SW)
ORDER PART
NUMBER
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Overall
Supply Current (VCC in Undervoltage Lockout)
VCC = Lockout Voltage – 0.2V
q
0.25
0.45
mA
Supply Current On
11.5V
≤ VCC ≤ VMAX
q
13
19
mA
VCC Turn-On Threshold (Undervoltage Lockout)
q
15.5
16.5
17.5
V
VCC Turn-Off Threshold
q
9.5
10.5
11.5
V
Voltage Amplifier (PFC Section)
Voltage Amp Offset
VAOUT = 3.5V
q
–10
10
mV
Input Bias Current
VSENSE = 0V to 7V
q
– 25
– 250
nA
Voltage Gain
70
100
dB
Voltage Amp Unity-Gain Bandwidth
3
MHz
Voltage Amp Output High (Internally Clamped)
q
11.3
13.3
V
Voltage Amp Output Low
q
1.1
2
V
Voltage Amp Short-Circuit Current
VAOUT = 0V
q
38
17
mA
ELECTRICAL CHARACTERISTICS
Maximum operating voltage (VMAX) = 25V, VCC = 18V, RSET = 15k to GND, CSET = 1nF to GND, IAC = 100A, ISENSE = 0V, CAOUT = 3.5V,
VAOUT = 5V, OVP = VREF. No load on any outputs unless otherwise noted.
LT1508CN
LT1508CSW
LT1508IN
LT1508ISW
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1509 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Power Factor and PWM Controller |
| LT15090 | 制造商:Cooper Crouse-Hinds 功能描述: 制造商:CROUSE-HINDS/COOPER 功能描述: |
| LT1509CN | 功能描述:IC PFC CTRLR AVERAGE CURR 20DIP RoHS:否 类别:集成电路 (IC) >> PMIC - PFC（功率因数修正） 系列:- 产品培训模块:GreenChip Synchronous Rectification Control Family of ICs 标准包装:1 系列:- 模式:间歇导电（DCM） 频率 - 开关:- 电流 - 启动:- 电源电压:8.6 V ~ 38 V 工作温度:-20°C ~ 150°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SO 包装:Digi-Reel® 其它名称:568-5348-6 |
| LT1509CN#PBF | 功能描述:IC PFC CTRLR AVERAGE CURR 20DIP RoHS:是 类别:集成电路 (IC) >> PMIC - PFC（功率因数修正） 系列:- 产品培训模块:GreenChip Synchronous Rectification Control Family of ICs 标准包装:1 系列:- 模式:间歇导电（DCM） 频率 - 开关:- 电流 - 启动:- 电源电压:8.6 V ~ 38 V 工作温度:-20°C ~ 150°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SO 包装:Digi-Reel® 其它名称:568-5348-6 |
| LT1509CSW | 功能描述:IC PFC CTRLR AVERAGE CURR 20SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - PFC（功率因数修正） 系列:- 产品培训模块:GreenChip Synchronous Rectification Control Family of ICs 标准包装:1 系列:- 模式:间歇导电（DCM） 频率 - 开关:- 电流 - 启动:- 电源电压:8.6 V ~ 38 V 工作温度:-20°C ~ 150°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SO 包装:Digi-Reel® 其它名称:568-5348-6 |
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