Datasheet

L6920DC Electrical characteristics
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3 Electrical characteristics
Table 4. Electrical characteristcs
(V
IN
= 2V, FB = GND, T
J
= 25°C unless otherwise specified)
Symbol Parameter Test condition Min Typ Max Unit
V
CC
Section
V
IN
Minimum Start Up Input
Voltage
V
out
= 3.3V
0.8 V
I
q
Quiescent Current
I
l
= 0 mA, FB = 1.4V, V
out
= 3.3V
LBI = SHDN = 2V
912µA
I
l
= 0 mA, FB = 1.4V, V
out
= 5V
LBI = SHDN = 2V
11 15 µA
I
sd
Shut Down Current
V
in
= 5V, I
l
= 0 mA
0.1 1 µA
Irev Reverse battery current
V
in
= -4V
0.1 1 µA
Power section
R
on-N
Active switch ON resistance 300 mΩ
R
on-P
Synchronous switch ON
resistance
300 mΩ
Control section
V
ou t
Output voltage
FB = OUT, I
l
= 0 mA
3.2 3.3 3.4 V
FB = GND, I
l
= 0 mA
4.955.1V
Output voltage range External divider 1.8 5.5 V
V
LBI
LBI threshold 1.23 V
V
LBO
LBO logic LOW
I
sink
= 1mA
0.2 0.4 V
I
lim
LX switch current limit 0.55 0.9 A
T
onmax
Maximum on time
V
out
= 3.3V
3.75 5 6.25 µs
T
offmin
Minimum off time
V
out
= 3.3V
0.75 1 1.25 µs
SHDN
SHDN logic LOW 0.2 V
SHDN logic HIGH 0.6 V
V
ref
Reference Voltage 1.18 1.23 1.27 V