L6566ATR(2007) View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
L6566ATR Datasheet PDF : 51 Pages
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L6566A
Application information
Table 7. L6566A protections
Shutdown2
Shutdown
by VCOMP
low
VCOMP <
VCOMPOFF
Latched
10 0.33 0
0
0
0
0
0
Shutdown Vcc < 9.4V
by Vcc going (VCOMP >
ADAPTIVE
UVLO
below Vccoff
(lowering of
Vccoff
VCOMPL)
Vcc < 7.2V
Auto
restart
5V
0.18
mA
0
0
threshold at (VCOMP >
light load) VCOMPO)
0
0
0
0
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
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
0.45V.
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