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參數(shù)資料
| 型號： | L6668 |
| 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)： | 4/23頁 |
| 文件大小： | 671K |
| 代理商： | L6668 |
L6668
4/23
13
STBY
Standby function. This pin is a high-impedance one as long as the voltage on pin COMP is
higher than 3V. When the voltage on pin COMP falls below 3V, the voltage on the pin tracks
that on pin COMP and is capable of sinking current. A resistor connected from the pin to the
oscillator allows programming frequency foldback at light load.
Open-drain ON/OFF control of PFC controller. This pin is intended for driving the base of a
PNP transistor in systems comprising a PFC pre-regulator, to stop the PFC controller at
light load by cutting its supply. The pin, normally low, opens if the voltage on COMP is lower
than 2.2V and goes back low when the voltage on pin COMP exceeds 2.7V. Whenever the
IC is shutdown, either latched (DIS>1.5V, ISEN >1.5V) or not (UVLO, SKIPADJ<0.8), the
pin is open as well.
Voltage ramp for slope compensation. When the gate-drive output is high the pin delivers a
voltage tracking the oscillator ramp (shifted down by one V
BE
); when the gate-drive output
is low the voltage delivered is zero. The pin is to be connected to pin ISEN via a resistor to
make slope compensation and allow stable operation at duty cycles close to and greater
than 50%.
Oscillator pin. A resistor to VREF and a capacitor to GND define the oscillator frequency (at
full load). A resistor connect to STBY modifies the oscillator frequency when the voltage on
pin COMP is lower than 3V.
14
PFC_STOP
15
S-COMP
16
RCT
Table 5. Electrical Characteristcs
(T
j
= 0 to 105°C, Vcc=15V, Co=1nF; R
T
=13.3k , C
T
=1nF; unless otherwise specified)
Symbol
SUPPLY VOLTAGE
Vcc
V
CCOn
V
CCOff
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Operating range
Turn-on threshold
After turn-on
9.4
12.5
22
14.5
V
V
(1)
13.5
Turn-off threshold
(1)
After turn-on
8.0
8.7
9.4
V
Hys
V
Z
Hysteresis
Zener Voltage
4.0
22
V
V
Icc = 20 mA
24
28
SUPPLY CURRENT
I
start-up
Start-up Current
Before turn-on,
Vcc=Vcc
ON
-0.5
After turn-on
150
μA
I
q
I
CC
I
qdis
Quiescent Current
2
2.5
mA
Operating Supply Current
4
mA
Shutdown quiescent
current
V
DIS
> 2.2, or V
ISEN
> 1.5
V
SKIPADJ
<0.8
0.8 <V
COMP
< V
SKIPADJ
180
μA
1
1.8
mA
1.3
mA
HIGH-VOLTAGE START-UP GENERATOR
V
HV
Breakdown voltage
V
HVstart
Start voltage
I
charge
Vcc charge current
I
HV, ON
ON-state current
I
HV
< 100 μA
I
Vcc
< 100 μA
V
HV
> V
Hvstart
, Vcc > 3V
V
HV
> V
Hvstart
, Vcc > 3V
V
HV
> V
Hvstart
, Vcc = 0
V
HV
= 400 V
700
V
50
80
110
V
0.55
0.85
1
mA
1.6
mA
0.8
I
HV, OFF
V
CCrestart
Leakage current (OFF state)
40
μA
HV generator restart voltage
4.4
12
5
5.6
14
V
V
(1)
After DIS tripping
13
Table 4. Pin Description
(continued)
Pin
Number
Pin Name
Function
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6668_06 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SMART PRIMARY CONTROLLER |
| L6668B2 | 功能描述:電流型 PWM 控制器 POWER SUPPLY RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| L6668TR | 功能描述:電流型 PWM 控制器 SMART CONTROLLER RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| L667 | 制造商:BURNDY 功能描述:L-DIE |
| L-667 | 制造商:RHOMBUS-IND 制造商全稱:Rhombus Industries Inc. 功能描述:Common Mode Inductor For DC/DC Power supply |
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