Datasheet

LTC3245
4
3245fa
For more information www.linear.com/LTC3245
Typical perForMance characTerisTics
5V Fixed Output Voltage
vs Input Voltage (Burst Mode
Operation)
5V Fixed Output Voltage
vs Input Voltage (Low Noise
Operation)
5V Fixed Efficiency
vs Output Current
3.3V Fixed Output Voltage
vs Input Voltage (Burst Mode
Operation)
3.3V Fixed Output Voltage
vs Input Voltage (Low Noise
Operation)
3.3V Fixed Output Efficiency
vs Output Current
Input Operating Current
vs Input Voltage
Input Shutdown Current
vs Input Voltage
Oscillator Frequency
vs Temperature
T
A
= 25°C, unless otherwise noted.
V
IN
(V)
0
0
I
CC
(µA)
5
10
15
25
20
35
30
45
40
50
5 10 15 20
3245 G01
25 30 35 40
BURST = 0V
V
OUT
= 5V
V
OUT
= 3.3V
V
IN
(V)
0
0
I
SD
(µA)
2
4
6
10
8
14
12
18
16
20
5 10 15 20
3245 G02
25 30 35 40
150°C
125°C
25°C
–55°C
TEMPERATURE (°C)
–60
300
f
OSC
(kHz)
325
350
375
400
450
425
475
500
–30 0 30 60
3245 G03
90 120
150
V
IN
(V)
2
4.80
V
OUT
(V)
4.85
4.90
4.95
5.00
5.10
5.05
5.15
5.20
3 4 5 6 87 9
3245 G04
10 11 1412 13
15
I
OUT
= 0mA
I
OUT
= 150mA
I
OUT
= 250mA
V
IN
(V)
2
4.80
V
OUT
(V)
4.85
4.90
4.95
5.00
5.10
5.05
5.15
5.20
3 4 5 6 87 9
3245 G05
10 11 1412 13
15
I
OUT
= 0mA
I
OUT
= 150mA
I
OUT
= 250mA
I
OUT
(mA)
EFFICIENCY (%)
3245 G06
100
80
70
90
60
40
30
20
10
50
0
0.1 100
1000
101
Burst Mode OPERATION
LOW NOISE
V
IN
= 12V
V
IN
(V)
2
3.10
V
OUT
(V)
3.15
3.20
3.25
3.30
3.40
3.35
3.45
3.50
3 4 5 6 87 9
3245 G07
10 11 1412 13
15
I
OUT
= 0mA
I
OUT
= 150mA
I
OUT
= 250mA
V
IN
(V)
2
3.10
V
OUT
(V)
3.15
3.20
3.25
3.30
3.40
3.35
3.45
3.50
3 4 5 6 87 9
3245 G08
10 11 1412 13
15
I
OUT
= 0mA
I
OUT
= 150mA
I
OUT
= 250mA
I
OUT
(mA)
EFFICIENCY (%)
3245 G09
100
80
70
90
60
40
30
20
10
50
0
0.1 100
1000
101
Burst Mode OPERATION
LOW NOISE
V
IN
= 9V