L6566BH View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L6566BH' PDF : 51 Pages View PDF
Table 6. L6566BH protection (continued)
Protection
Description
Caused by
IC
Vcc
restart
IC Iq
VREF
SS
behavior (V) (mA) (V)
VCOMP OSC
FMOD
VFF
(V)
(V)
Externally settable
overtemperature
VDIS>VOTP
Latched 13.5 0.33 0
0
OTP protection
Internal shutdown
Tj > 160 oC
Auto
restart(5)
5
0.33 0
0
0
0
0
0
0
0
0
0
Brownout
Mains undervoltage
protection
VAC_OK < Vth
Auto
5
0.33 0
restart
0
0
0
0
Unchanged
Reference
drift
VREF drift protection
VREF > Vov
Latched 13.5 0.33 0
0
0
0
0
0
Shutdown1 Gate driver disable
VFF > Voff
Auto
5
restart
2.5
5 Unchanged Unchanged 1 Unchanged Unchanged
Shutdown2
Shutdown by VCOMP low
VCOMP <
VCOMPOFF
Latched 10 0.33 0
0
Vcc < 9.4 V
Shutdown by Vcc going (VCOMP >
Adaptive below Vccoff (lowering of VCOMPL)
UVLO Vccoff threshold at light Vcc < 7.2 V
Auto
restart
5V
0.18m
A
0
0
load)
(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).
4. If Css and the Vcc capacitor are such that the latch is tripped before Vcc falls below UVLO (Figure 21).
5. When TJ < 110 oC.
6. Discharged to zero by Vcc going below UVLO.
0
0
0
0
0
0
0
0
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