ltc3406ab-2 Linear Technology Corporation, ltc3406ab-2 Datasheet - Page 3

• Manufacturer Part Number: ltc3406ab-2
• Description: 2.25mhz, 600ma Synchronous Step-down Regulator In Thinsot
• Manufacturer: Linear Technology Corporation

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
SYMBOL
V
I
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3406AB-2E is guaranteed to meet performance
specifi cations from 0°C to 85°C. Specifi cations over the –40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: T
dissipation P
TYPICAL PERFORMANCE CHARACTERISTICS
(From Figure 1a Except for the Resistive Divider Resistor Values)
RUN
RUN
LTC3406AB-2: T
100
100
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0.1
Effi ciency vs Input Voltage
2
Effi ciency vs Load Current
J
V
V
is calculated from the ambient temperature T
OUT
OUT
D
= 1.8V
= 2.5V
according to the following formula:
1
OUTPUT CURRENT (mA)
3
OUTPUT CURRENT (mA)
J
= T
PARAMETER
RUN Threshold
RUN Leakage Current
A
+ (P
10
4
D
)(250°C/W)
100
I
I
I
L
L
L
5
V
V
V
= 10mA
= 100mA
= 600mA
IN
IN
IN
3406AB2 G04
3406AB2 G01
= 2.7V
= 3.6V
= 4.2V
1000
6
A
100
100
and power
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
0.1
A
2
Effi ciency vs Load Current
Effi ciency vs Input Voltage
V
V
= 25°C. V
OUT
OUT
CONDITIONS
= 2.5V
= 1.2V
The
1
OUTPUT CURRENT (mA)
3
INPUT VOLTAGE (V)
●
IN
denotes the specifi cations which apply over the full operating
= 3.6V unless otherwise specifi ed.
10
4
Note 4: The LTC3406AB-2 is tested in a proprietary test mode that
connects V
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 specifi ed maximum operating junction
temperature may impair device reliability.
Note 7: Limited by long term current density considerations.
100
I
I
I
L
L
L
5
V
V
V
= 10mA
= 100mA
= 600mA
FB
IN
IN
IN
3406AB2 G05
3406AB2 G02
to the output of the error amplifi er.
= 2.7V
= 3.6V
= 4.2V
1000
6
0.615
0.610
0.585
0.605
0.600
0.595
0.590
●
●
100
90
80
70
60
50
40
30
20
10
0
–50
2
Effi ciency vs Input Voltage
Reference Voltage vs
Temperature
V
V
OUT
IN
MIN
0.3
–25
= 3.6V
LTC3406AB-2
= 1.2V
3
0
INPUT VOLTAGE (V)
TEMPERATURE (°C)
±0.01
TYP
1
25
4
50
MAX
1.5
±1
75
I
I
I
L
L
L
5
= 10mA
= 100mA
= 600mA
3406AB2 G06
100
3406AB2 G03
3406ab2f
UNITS
3
125
μA
6
V