ltc3405es6 Linear Technology Corporation, ltc3405es6 Datasheet - Page 3

• Manufacturer Part Number: ltc3405es6
• Description: 1.5mhz, 300ma Synchronous Step-down Regulator In Thinsot
• Manufacturer: Linear Technology Corporation

(From Figure1a Except for the Resistive Divider Resistor Values)
TYPICAL PERFOR A CE CHARACTERISTICS
100
1.8
1.7
1.6
1.5
1.4
1.3
1.2
95
90
85
80
75
70
65
60
55
50
90
80
70
60
50
40
2.5
0.1
Efficiency vs Input Voltage
2
Efficiency vs Output Current
Oscillator Frequency vs
Supply Voltage
I
Burst Mode OPERATION
V
OUT
V
OUT
IN
3.0
= 4.2V
= 250mA
= 1.8V
OUTPUT CURRENT (mA)
3
1
SUPPLY VOLTAGE (V)
INPUT VOLTAGE (V)
V
3.5
IN
V
= 3.6V
IN
= 2.7V
4.0
10
4
I
OUT
I
OUT
4.5
= 0.1mA
I
I
OUT
OUT
= 1mA
100
V
5
W
OUT
= 10mA
= 100mA
5.0
= 1.3V
3405 G02
3405 G08
3405 G05
U
1000
5.5
6
0.814
0.809
0.804
0.799
0.794
0.789
0.784
1.834
1.824
1.814
1.804
1.794
1.784
1.774
100
90
80
70
60
50
40
30
20
10
0
–50
0.1
0
Efficiency vs Output Current
Output Voltage vs Load Current
Reference Voltage vs
Temperature
V
V
PULSE SKIPPING MODE
V
IN
V
IN
IN
IN
–25
= 3.6V
Burst Mode
OPERATION
= 3.6V
= 3.6V
100
= 3.6V
V
IN
OUTPUT CURRENT (mA)
1
= 4.2V
V
LOAD CURRENT (mA)
0
IN
TEMPERATURE (°C)
200
= 4.2V
25
PULSE SKIPPING MODE
Burst Mode OPERATION
300
10
50
400
75
V
100
OUT
500
100
= 1.8V
3405 G03
3405 G09
3405 G06
1000
600
125
1.70
1.65
1.60
1.55
1.50
1.45
1.40
1.35
1.30
100
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
90
80
70
60
50
40
0
–50
0.1
Efficiency vs Output Current
Oscillator Frequency vs
Temperature
R
0
V
DS(ON
IN
–25
= 3.6V
V
SYNCHRONOUS
1
IN
) vs Input Voltage
= 5.5V
OUTPUT CURRENT (mA)
1
0
TEMPERATURE (°C)
V
2
INPUT VOLTAGE (V)
SWITCH
V
IN
IN
V
= 4.2V
= 3.6V
IN
25
MAIN SWITCH
3
= 2.7V
10
LTC3405
50
4
75
100
5
V
OUT
100
= 1.8V
3405 G04
6
3405 G10
3405 G07
3405fa
3
1000
125
7