Datasheet

3/13
L6920
Table 4. Electrical Characteristcs
(V
in
= 2V, FB = GND, T
amb
= -40°C to 85°C and T
j
< 125°C unless otherwise specified)
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
CC
SECTION
V
in
Minimum operating Input Voltage 0.6 V
V
in
Minimum Start Up Input Voltage 1 V
I
q
Quiescent Current I
l
=0 mA, FB = 1.4V, V
out
= 3.3V
LBI = SHDN = 2V, T
j
= T
amb
915µA
I
l
=0 mA, FB = 1.4V, V
out
= 5V
LBI = SHDN = 2V, T
j
= T
amb
11 18 µA
I
sd
Shut Down Current V
in
= 5V, I
l
=0 mA 0.1 1 µA
Irev Reverse battery current V
in
= -4V, T
j
= T
amb
0.1 2 µA
POWER SECTION
R
on-N
Active switch ON resistance 120 250 mΩ
R
on-P
Synchronous switch ON
resistance
120 250 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 2 5.2 V
V
LBI
LBI threshold 1.18 1.23 1.27 V
0°C < T
j
< 70°C 1.205 1.23 1.255 V
V
LBO
LBO logic LOW
I
sink
< 250µA 0.20.4V
I
lim
LX switch current limit 0.8 1 1.2 A
T
onmax
Maximum on time V
out
= 2V to 5.3V 3.75 5 6.25 µs
T
offmin
Minimum off time V
out
= 2V to 5.3V 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