LTC3406B
The
●
denotes specifications which apply over the full operating
temperature range, otherwise specifications are T
A
= 25°C. V
IN
= 3.6V unless otherwise specified.
SYMBOL
V
RUN
I
RUN
PARAMETER
RUN Threshold
RUN Leakage Current
CONDITIONS
●
●
ELECTRICAL CHARACTERISTICS
MIN
0.3
TYP
1
±0.01
MAX
1.5
±1
UNITS
V
µA
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The LTC3406BE is guaranteed to meet performance specifications
from 0°C to 70°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:
T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formula:
LTC3406B: T
J
= T
A
+ (P
D
)(250°C/W)
Note 4:
The LTC3406B is tested in a proprietary test mode that connects
V
FB
to the output of the error amplifier.
Note 5:
Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 6:
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.
TYPICAL PERFOR A CE CHARACTERISTICS
(From Figure1a Except for the Resistive Divider Resistor Values)
Efficiency vs Input Voltage
100
95
90
T
A
= 25°C
I
OUT
= 100mA
I
OUT
= 600mA
EFFICIENCY (%)
EFFICIENCY (%)
85
80
75
70
65
60
55
50
2
EFFICIENCY (%)
I
OUT
= 10mA
3
5
4
INPUT VOLTAGE (V)
Efficiency vs Output Current
100
90
80
V
OUT
= 2.5V
T
A
= 25°C
VIN = 2.7V
VIN = 4.2V
REFERENCE VOLTAGE (V)
EFFICIENCY (%)
70
60
50
40
30
20
10
0.1
0.604
0.599
0.594
0.589
0.584
–50 –25
FREQUENCY (MHz)
VIN = 3.6V
1
100
10
OUTPUT CURRENT (mA)
U W
3406B G01
3406B G04
Efficiency vs Output Current
100
90
80
70
60
50
40
30
20
VIN = 4.2V
VIN = 3.6V
V
OUT
= 1.2V
T
A
= 25°C
100
VIN = 2.7V
90
80
70
60
50
40
30
20
1
100
10
OUTPUT CURRENT (mA)
1000
3406B GO2
Efficiency vs Output Current
V
OUT
= 1.5V
T
A
= 25°C
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
6
10
0.1
10
0.1
1
100
10
OUTPUT CURRENT (mA)
1000
3406B GO3
Reference Voltage vs
Temperature
0.614
V
IN
= 3.6V
0.609
1.65
1.60
1.55
1.50
1.45
1.40
1.35
50
25
75
0
TEMPERATURE (°C)
100
125
1.70
Oscillator Frequency vs
Temperature
V
IN
= 3.6V
1000
1.30
–50 –25
50
25
75
0
TEMPERATURE (°C)
100
125
3406B G05
3406B G06
3406bfa
3
LINER [ LINEAR TECHNOLOGY ]
