Datasheet

4
LTC4411
4411fa
UU
U
PI FU CTIO S
IN (Pin 1): Ideal Diode Anode and Positive Power Supply
for LTC4411. When operating LTC4411 as a switch it must
be bypassed with a low ESR ceramic capacitor of 1µF. X5R
and X7R dielectrics are preferred for their superior voltage
and temperature characteristics.
GND (Pin 2): Power and Signal Ground for the IC.
CTL (Pin 3): Controlled Shutdown Pin. Weak (3µA) Pull-
Down. Pull this pin high to shut down the IC. Tie to GND
to enable. Can be left floating when not in use.
STAT (Pin 4): Status Condition Indicator. This pin indi-
cates the conducting status of the LTC4411. If the part is
forward biased (V
IN
> V
OUT
+ V
FWD
) this pin will be Hi-Z.
If the part is reverse biased (V
OUT
> V
IN
+ V
RTO
), then this
pin will pull down 10µA through an open-drain. When
terminated to a high voltage through a 470k resistor, a
high voltage indicates diode conducting. May be left
floating or grounded when not in use.
OUT (Pin 5): Ideal Diode Cathode and Output of the
LTC4411. Bypass OUT with a nominal 1mΩ ESR capacitor
of at least 4.7µF. The LTC4411 is stable with ESRs down
to 0.2mΩ. However stability improves with higher ESRs.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
R
FWD
vs V
SUPPLY
R
FWD
vs Temperature at
V
IN
= 3.6V
I
QROUT
vs V
REVERSE
at V
IN
= 0V
01 234 56
REVERSE VOLTAGE (V)
LEAKAGE CURRENT (A)
10µ
1µ
100n
10n
4411 G07
T
A
= 60°C
T
A
= 80°C
T
A
= 100°C
T
A
= 120°C
SUPPLY VOLTAGE (V)
2.5
R
FWD
(Ω)
0.150
0.125
0.100
0.075
0.050
3.0 3.5 4.0 4.5
4411 G04
5.0 5.5
TEMPERATURE (°C)
–40
R
FWD
(Ω)
120
4411 G05
0–20 20 100
40 60
80
REVERSE VOLTAGE (V)
01 234 56
I
QROUT
CURRENT (A)
100µ
10µ
1µ
100n
4411 G06
T
A
= –40°C
T
A
= 0°C
T
A
= 40°C
0.15
0.10
0.20
0.05
0
T
A
= 80°C
T
A
= 120°C
4411 G08
4411 G09
T
A
= –40°C
T
A
= 0°C
T
A
= 40°C
T
A
= 80°C
T
A
= 120°C
V
CTRL
500mV/DIV
V
STAT
2V/DIV
V
OUT
2V/DIV
I
OUT
500mA/DIV
200µs/DIV
V
CTRL
500mV/DIV
V
STAT
2V/DIV
V
OUT
2V/DIV
I
OUT
50mA/DIV
20µs/DIV
I
LEAK
vs V
REVERSE
, V
IN
= 0V
CTL Turn-On CTL Turn-Off