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參數(shù)資料
| 型號： | LT1508 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Octal D-Type Edge-Triggered Flip-Flops With 3-State Outputs 24-PDIP 0 to 70 |
| 中文描述： | 功率因數(shù)和PWM控制器（電壓模式） |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 337K |
| 代理商： | LT1508 |
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
DESCRIPTIO
N
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
AXI
U
RATIU
W
Supply Voltage ........................................................ 27V
GTDR Current Continuous ...................................... 0.5A
GTDR Output Energy ................................................5
μ
J
I
AC
, R
SET
, PK
LIM
Input Current.............................. 20mA
V
SENSE
, OVP Input Voltage .................................... V
MAX
I
LIM
, V
C
Input Voltage ................................................ 8V
I
SENSE
, M
OUT
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
W
W
PACKAGE/ORDER I
FOR
ATIO
W
U
U
Consult factory for Military grade parts.
1
2
3
4
5
6
7
8
9
10
TOP VIEW
SW
20-LEAD PL
N PACKAGE
20-LEAD PDIP
20
19
18
17
16
15
14
13
12
11
GTDR1
GND2
GND1
C
SET
PK
LIM
CA
OUT
I
SENSE
M
OUT
I
AC
VA
OUT
GTDR2
I
LIM
V
C
V
CC
SS1
R
SET
V
SENSE
SS2
V
REF
OVP
T
JMAX
= 125
°
C,
θ
JA
= 100
°
C/W (N)
T
JMAX
= 125
°
C,
θ
JA
= 120
°
C/W (SW)
ORDER PART
NUMBER
PARAMETER
Overall
Supply Current (V
CC
in Undervoltage Lockout)
Supply Current On
V
CC
Turn-On Threshold (Undervoltage Lockout)
V
CC
Turn-Off Threshold
Voltage Amplifier (PFC Section)
Voltage Amp Offset
Input Bias Current
Voltage Gain
Voltage Amp Unity-Gain Bandwidth
Voltage Amp Output High (Internally Clamped)
Voltage Amp Output Low
Voltage Amp Short-Circuit Current
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
= Lockout Voltage –0.2V
11.5V
≤
V
CC
≤
V
MAX
G
0.25
13
16.5
10.5
0.45
19
17.5
11.5
mA
mA
G
G
15.5
9.5
V
V
G
VA
OUT
= 3.5V
V
SENSE
= 0V to 7V
G
– 10
10
mV
nA
dB
MHz
G
–25
100
3
13.3
1.1
8
–250
70
G
11.3
V
V
G
2
VA
OUT
= 0V
G
3
17
mA
ELECTRICAL CHARACTERISTICS
Maximum operating voltage (V
MAX
) = 25V, V
CC
= 18V, R
SET
= 15k to GND, C
SET
= 1nF to GND, I
AC
= 100
μ
A, I
SENSE
= 0V, CA
OUT
= 3.5V,
VA
OUT
= 5V, OVP = V
REF
. No load on any outputs unless otherwise noted.
LT1508CN
LT1508CSW
LT1508IN
LT1508ISW
相關PDF資料 |
PDF描述 |
|---|---|
| LT1508C | Power Factor and PWM Controller(Voltage Mode) |
| LT1508CN | Octal D-Type Edge-Triggered Flip-Flops With 3-State Outputs 24-PDIP 0 to 70 |
| LT1508CSW | Octal D-Type Transparent Latches With 3-State Outputs 20-SOIC 0 to 70 |
| LT1508I | Power Factor and PWM Controller(Voltage Mode) |
| LT1508IN | Power Factor and PWM Controller(Voltage Mode) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LT1508C | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Power Factor and PWM Controller(Voltage Mode) |
| LT1508CN | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Power Factor and PWM Controller(Voltage Mode) |
| LT1508CSW | 功能描述:IC PWM/POWER FACTOR CNTRLR20SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - PFC（功率因數(shù)修正） 系列:- 產(chǎn)品培訓模塊:GreenChip Synchronous Rectification Control Family of ICs 標準包裝:1 系列:- 模式:間歇導電（DCM） 頻率 - 開關:- 電流 - 啟動:- 電源電壓:8.6 V ~ 38 V 工作溫度:-20°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:14-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:14-SO 包裝:Digi-Reel® 其它名稱:568-5348-6 |
| LT1508I | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Power Factor and PWM Controller(Voltage Mode) |
| LT1508IN | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Power Factor and PWM Controller(Voltage Mode) |
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