Linear Technology LTC1736 Datasheet page 4

LTC1736
TYPICAL PERFOR A CE CHARACTERISTICS
Efficiency vs Load Current
(3 Operating Modes)
100
EXTV OPEN
CC
90
BURST
80
SYNC
70
CONT
60
50
40
30
20
0.001 0.1
0.01
LOAD CURRENT (A)
Efficiency vs Input Voltage
100
EXTV OPEN
CC
V = 1.6V
OUT
95
FIGURE 1
90
85
I = 0.5A
OUT
80
75
70
0 10 15 20
5
INPUT VOLTAGE (V)
Input and Shutdown Currents
vs Input Voltage
500
ALL VID BITS OPEN
400
EXTV OPEN
CC
300
200
SHUTDOWN
100
EXTV = 5V
CC
0
0 5 10 15 20
INPUT VOLTAGE (V)
4
Efficiency vs Load Current
100
EXTV
CC
90
V
IN
80
70
60
V = 5V
IN
V = 1.6V 50
OUT
R = 0.01Ω
S
f = 300kHz
O
40
10
1 10mA
1736 G01
Load Regulation
0
–0.1
I = 5A
OUT
–0.2
–0.3
–0.4
25 30 2
0
1736 G04
INTV
100
6
1mA LOAD
5
80
4
60
3
40
2
20
1
0 0
25 30 35 0
1736 G07
= 5V
= 5V
V = 15V
IN
V = 24V
IN
100mA 1A 10A
LOAD CURRENT (A)
1736 G02
FCB = 0V
V = 15V
IN
FIGURE 1
6
4 8 10 12
LOAD CURRENT (A)
1736 G05
Line Regulation
CC
5 10 15 20 25 30
INPUT VOLTAGE (V)
1736 G08
Efficiency vs Input Voltage
100
EXTV = 5V
CC
V = 1.6V
OUT
95
FIGURE 1
90
85
80
75
70
0 10 15
5
INPUT VOLTAGE (V)
I Voltage vs Load Current
TH
2.5
V = 5V
IN
V = 1.6V
OUT
R = 0.01Ω
SENSE
2.0
f = 300kHz
O
CONTINUOUS
1.5
MODE
SYNCHRONIZED f = f
1.0
Burst Mode
OPERATION
0.5
0
0 1 2 3
LOAD CURRENT (A)
EXTV Switch Drop
CC
vs INTV Load Current
CC
500
400
300
200
100
0
35 0 10 20
INTV LOAD CURRENT (mA)
CC
I = 5A
OUT
I = 0.5A
OUT
20 25 30
1736 G03
O
4 5 6
1736 G06
30 40 50
1736 G09