Datasheet

LTC3416
3
3416fa
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired. The voltage should never exceed 6.0V for any
pin.
Note 2: The LTC3416E is guaranteed to meet performance specifications
from 0°C to 85°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: The LTC3416 is tested in a feedback loop that adjusts V
FB
to
achieve a specified error amplifier output voltage (I
TH
).
Note 4: This parameter is guaranteed by design and characterization.
ELECTRICAL CHARACTERISTICS
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Switch On-Resistance
vs Input Voltage
TEMPERATURE (°C)
–40
0.795
V
REF
(V)
0.796
0.798
0.799
0.800
0
40
60 140
3416 G01
0.797
–20 20
80
100
120
INPUT VOLTAGE (V)
2.25 2.75 3.25 3.75 4.25 4.75 5.25 5.75
ON-RESISTANCE (mΩ)
90
80
70
60
50
40
30
20
10
0
3416 G02
PFET
NFET
T
A
= 25°C
TEMPERATURE (°C)
–40
ON-RESISTANCE (mΩ)
120
100
80
60
40
20
0
–25
3416 G03
–10
520
35
50
65 80 95
110
125
PFET
NFET
V
REF
vs Temperature, V
IN
= 3.3V
Switch On-Resistance
vs Temperature, V
IN
= 3.3V
Switch Leakage vs Input Voltage
INPUT VOLTAGE (V)
2.25
SWITCH LEAKAGE CURRENT (nA)
20
18
16
14
12
10
8
6
4
2
0
3.25 4.25 4.75
3416 G04
2.75 3.75 5.25
PFET
NFET
T
A
= 25°C
Frequency vs R
OSC
R
OSC
(k)
25
FREQUENCY (kHz)
7000
6000
5000
4000
3000
2000
1000
0
3416 G05
225 925825725625525125 325 425
V
IN
= 3.3V
T
A
= 25°C
Frequency vs Input Voltage
INPUT VOLTAGE (V)
2.25 3.25 4.25 4.752.75 3.75 5.25
1040
1020
1000
980
960
940
920
900
3416 G06
FREQUENCY (kHz)
R
OSC
= 294k
T
A
= 25°C
Note 5: Dynamic supply current is higher due to the internal gate charge
being delivered at the switching frequency.
Note 6: T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
as follows:
LTC3416E: T
J
= T
A
+ (P
D
)(38°C/W)
Note 7: This IC includes overtemperature protection that is intended to
protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.