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參數(shù)資料
| 型號： | LX1686CPWT |
| 英文描述： | Ballast/Backlight Controller/Driver |
| 中文描述： | 鎮(zhèn)流器/背光控制器/驅(qū)動器 |
| 文件頁數(shù)： | 3/12頁 |
| 文件大?。?/td> | 292K |
| 代理商： | LX1686CPWT |
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
Copyright
2000
Rev. 1.0, 2001-09-19
W
M
.
C
LX1684
Voltage-Mode PWM Controller
P
RODUCTION
L I N F I N I T Y D I V I S I O N
E L E C T R I C A L C H A R A C T E R I S T IC S
Unless otherwise specified, the following specifications apply over the operating ambient temperature 0
°
C
≤
T
A
≤
70
°
C except where
otherwise noted. Test conditions: V
CC
=5V, V
C1
=16V
LX1684
Typ
!
REFERENCE
Parameter
Symbol
Test Conditions
Min
Max
Units
Reference Voltage
V
FB
V
OUT
=V
FB
, T
A
=25°C
1.237
1.25
1.262
V
V
OUT
=V
FB
, 0°C < T
A
< 70°C
1.231
1.269
V
!
OSCILLATOR
Frequency
F
OSC
135
175
200
kHz
Ramp Amplitude
V
RAMP
1.25
VPP
!
ERROR AMPLIFIER
Input Resistance
R
IN
V
OUT
= V
FB
20
k
!
CURRENT SENSE
Current Set
I
SET
V
CS
= V
CC
–0.4V
40
45
μA
V
TRIP
300
380
420
mV
Current Sense Delayed
T
CSD
1.0
μsec
!
OUTPUT DRIVERS
Drive Rise Time, Fall Time
T
RF
C
L
= 3000pF
50
nS
Drive High
V
DH
I
SOURCE
= 20mA, V
C1
=16V
13
14
V
Drive Low
V
DL
I
SINK
= 20mA, V
C1
=16V
0.1
0.2
V
!
UVLO AND SOFT-START (SS)
V
CC5
Start-Up Threshold
V
ST
V
C1
> 4.0V
4.0
4.25
4.5
V
Hysteresis
0.10
V
SS Resistor
R
SS
22
k
SS Output Enable
V
EN
0.25
0.3
0.35
V
Hiccup Duty Cycle
DC
HIC
C
SS
= 0.1μF, F
REQ
=100Hz
12
14
%
!
SUPPLY CURRENT
V
C1
Dynamic Supply Current
I
CD
Out Freq = 175kHz, C
L
=3000pF, Synch., V
SS
> 0.3V
V
SS
< 0.3V ; outputs low (disable), V
C1
= 16V
30
40
mA
Static Supply Current V
C1
I
VC1
7
9
mA
5V
I
VCC
V
SS
> 0.3V ; outputs low (disable)
9
12
mA
E
L
E
C
T
R
I
C
A
L
S
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