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參數(shù)資料
| 型號： | L6668TR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | SMART PRIMARY CONTROLLER |
| 中文描述： | 智能主控制器 |
| 文件頁數(shù)： | 5/23頁 |
| 文件大?。?/td> | 671K |
| 代理商： | L6668TR |
5/23
L6668
REFERENCE VOLTAGE
V
REF
Output voltage
(2)
Tj = 25 °C; I
REF
= 1 mA
Vcc= 9.4 to 22 V,
I
REF
= 1 to 5 mA
V
REF
= 0
Vcc = 6V; Isink = 0.5 mA
4.925
5
5.075
V
V
REF
Total variation
4.8
5.13
V
I
REF
Short circuit current
10
30
mA
Sink capability in UVLO
0.2
0.5
V
PWM CONTROL
V
COMP
H
I
COMP
R
COMP
D
max
D
min
CURRENT SENSE COMPARATOR
I
ISEN
Input Bias Current
t
LEB
Leading Edge Blanking
Maximum level
I
COMP
=0
V
COMP
= 1 V
V
COMP
= 2 to 4 V
V
COMP
= 5 V
V
COMP
= 1 V
5.5
V
Max. source current
320
400
480
μA
k
%
Dynamic resistance
22
Maximum duty cycle
70
75
Minimum duty cycle
0
%
V
ISEN
= 0
After gate drive low-to-high
transition
-1
μA
160
225
290
ns
t
d(H-L)
Delay to Output
100
ns
Gain
Maximum signal
3.56
0.725
3.75
0.8
3.94
0.875
V/V
V
V
ISENx
V
ISENdis
STANDBY FUNCTION
V
drop
V
th
V
COMP
= 5 V
Hiccup-mode OCP level
(2)
1.35
1.5
1.65
V
V
COMP
- V
STBY
Threshold on V
COMP
I
STBY
= 0.8 mA, V
COMP
<3V
35
mV
(2)
Voltage falling
3
V
Hysteresis
50
mV
LATCHED DISABLE FUNCTION
I
DIS
Input Bias Current
Vth
Disable threshold
V
DIS
= 0 to Vth
-1
μA
(2)
voltage rising
2.1
2.2
2.3
V
OSCILLATOR
fsw
Oscillation Frequency
Tj = 25°C, V
COMP
= 5 V
Vcc = 9.4 to 22V, V
COMP
= 5 V
95
100
105
kHz
93
100
107
kHz
Vpk
Vvy
Oscillator peak voltage
Oscillator valley voltage
(2)
2.85
0.75
3
3.15
1.05
V
V
(2)
0.9
SLOPE COMPENSATION
S-COMP
pk
Ramp peak
R
S-COMP
= 3 k
to GND,
OUT pin high, V
COMP
= 5 V
R
S-COMP
= 3 k
to GND,
OUT pin high
OUT pin low
V
S-COMP
=
V
S-COMPpk
1.6
1.75
1.9
V
S-COMP
vy
Ramp starting value
0.15
0.35
0.55
V
Ramp voltage
Source capability
0
0.8
mA
SOFT-START
I
SSC
Charge current
Tj = 25 °C
14
20
26
μA
Table 5. Electrical Characteristcs
(continued)
(T
j
= 0 to 105°C, Vcc=15V, Co=1nF; R
T
=13.3k , C
T
=1nF; unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
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