Datasheet

Electrical characteristics L6566B
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Symbol Parameter Test condition Min Typ Max Unit
Current sense comparator
I
CS
Input bias current V
CS
= 0 -1 µA
t
LEB
Leading edge blanking 150 250 300 ns
td
(H-L)
Delay to output 100 ns
V
CSx
Overcurrent setpoint
V
COMP
= V
COMPHI
, V
VFF
= 0 V 0.92 1 1.08
VV
COMP
= V
COMPHI
, V
VFF
= 1.5 V 0.45 0.5 0.55
V
COMP
= V
COMPHI
, V
VFF
= 3.0 V 0 0.1
V
CSdis
Hiccup-mode OCP level
(1)
1.4 1.5 1.6 V
PWM control
V
COMPHI
Upper clamp voltage I
COMP
= 0 5.7 V
V
COMPLO
Lower clamp voltage I
SOURCE
= -1 mA 2.0 V
V
COMPSH
Linear dynamics upper limit
(1)
V
VFF
= 0 V 4.8 5 5.2 V
I
COMP
Max. source current V
COMP
= 3.3 V 320 400 480 µA
R
COMP
Dynamic resistance V
COMP
= 2.6 to 4.8 V 25 kΩ
V
COMPBM
Burst-mode threshold
(1)
2.52 2.65 2.78
V
(1)
MODE/SC = open 2.7 2.85 3
Hys Burst-mode hysteresis 20 mV
I
CLAMPL
Lower clamp capability V
COMP
= 2 V -3.5 -1.5 mA
V
COMPOFF
Disable threshold Voltage falling 1.4 V
V
COMPO
Level for lower UVLO off
threshold (voltage falling)
(3)
2.61 2.75 2.89
V
(3)
MODE/SC = open 3.02 3.15 3.28
V
COMPL
Level for higher UVLO off
threshold (voltage rising)
(3)
2.9 3.05 3.2
V
(3)
MODE/SC = open 3.41 3.55 3.69
Table 4. Electrical characteristics (continued)