Datasheet

4
LTC3564
3564f
Efficiency vs Input Voltage
Efficiency vs Output Current
Efficiency vs Output Current
Reference Voltage vs
Temperature
Oscillator Frequency vs
Temperature
T
A
= 25°C, V
IN
= 3.6V, unless otherwise specified.
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Frequency Variation vs V
IN
Load Regulation
Line Regulation
R
DS(ON
) vs Input Voltage
INPUT VOLTAGE (V)
2.5
40
EFFICIENCY (%)
50
60
70
80
100
3.0
3.5 4.0 4.5
3564 G01
5.0 5.5
90
I
OUT
= 100mA
V
OUT
= 1.8V
I
OUT
= 1.25A
I
OUT
= 10mA
I
OUT
= 1mA
I
OUT
= 0.1mA
OUTPUT CURRENT (mA)
0.1
40
EFFICIENCY (%)
50
60
70
80
1 10 100 1000 10000
3564 G02
30
20
10
0
90
100
V
OUT
= 1.2V
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
OUTPUT CURRENT (mA)
0.1
40
EFFICIENCY (%)
50
60
70
80
1 10 100 1000 10000
3564 G04
30
20
10
0
90
100
V
OUT
= 1.5V
V
IN
= 2.7V
V
IN
= 3.6V
V
IN
= 4.2V
TEMPERATURE (°C)
–50
REFERENCE VOLTAGE (mV)
605
610
615
25 75
3564 G04
600
595
–25 0
50 100 125
590
585
TEMPERATURE (°C)
–50
OSCILLATOR FREQUENCY (MHz)
2.35
25
3564 G05
2.20
2.10
–25 0 50
2.05
2.00
2.40
2.30
2.25
2.15
75 100 125
V
IN
(V)
2.5
6
4
2
0
–2
–4
–6
–8
4.0 5.0
3564 G06
3.0 3.5
4.5 5.5
FREQUENCY VARIATION (%)
OUTPUT CURRENT (mA)
0
V
OUT
ERROR (%)
0.50
0.75
1.00
600 1000
3564 G07
0.25
0
200 400
800 1200 1400
–0.25
–0.50
V
OUT
= 1.8V
INPUT VOLTAGE (V)
2.5
–0.6
V
OUT
ERROR (%)
–0.4
–0.2
0
0.2
0.6
3.0
3.5 4.0 4.5
3564 G08
5.0 5.5
0.4
V
OUT
= 1.8V
I
LOAD
= 400mA
INPUT VOLTAGE (V)
2.5
0
R
DS(ON)
(Ω)
0.05
0.10
0.15
0.20
0.25
3.0
3.5 4.0 4.5
3564 G09
5.0 5.5
MAIN SWITCH
SYNCHRONOUS SWITCH