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参数资料
| 型号： | L6566BTR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 0.8 A POWER FACTOR CONTROLLER, 900 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | LEAD FREE, SOP-16 |
| 文件页数： | 38/51页 |
| 文件大小： | 624K |
| 代理商： | L6566BTR |
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L6566B
Application information
43/51
It is worth reminding that “Auto-restart” means that the device will work intermittently as long
as the condition that is activating the function is not removed; “Latched” means that the
device is stopped as long as the unit is connected to the input power source and the unit
must be disconnected for some time from the source in order for the device (and the unit) to
restart. Optionally, a restart can be forced by pulling the voltage of pin 16 (AC_OK) below
0.45 V.
Protection
Description
Caused by
IC
behavior
Vcc
restart
(V)
IC Iq
(mA)
VREF
(V)
SS
VCOMP
(V)
OSC
(V)
FMOD
VFF
Shutdown2
Shutdown
by VCOMP
low
VCOMP <
VCOMPOFF
Latched
10
0.33
0
ADAPTIVE
UVLO
Shutdown
by Vcc going
below Vccoff
(lowering of
Vccoff
threshold at
light load)
Vcc < 9.4V
(VCOMP >
VCOMPL)
Auto
restart
5 V
0.18
mA
00
0
Vcc < 7.2V
(VCOMP >
VCOMPO)
1.
Use One external diode from VFF (#15) to AC_OK (#16), cathode to AC_OK
2.
Use one external diode from SS (#14) to VREF (#10), cathode to VREF
3.
If Css and the Vcc capacitor are such that Vcc falls below UVLO before latch tripping (Figure 21 on page 34)
4.
If Css and the Vcc capacitor are such that the latch is tripped before Vcc falls below UVLO (Figure 21 on page 34)
5.
When TJ < 110
oC
6.
Discharged to zero by Vcc going below UVLO
Table 6.
L6566B protections (continued)
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