Datasheet

LTC3447
4
3447f
POWER LOSS (mW)
SUPPLY VOLTAGE (V)
2.5
FREQUENCY (MHz)
3.5
4.5
5.5
3447 G07
1.12
1.10
1.08
1.06
1.04
1.02
1.00
0.98
0.96
0.94
0.92
TEMPERATURE (°C)
–40 –20 0 20 40 60 80 100 120
FREQUENCY (MHz)
3447 G08
TEMPERATURE (°C)
–40 –20 0 20 40 60 80 100 120
3447 G09
1.30
1.24
1.18
1.12
1.06
1.00
0.94
0.88
0.82
0.76
0.70
3447 G06
SUPPLY VOLTAGE (V)
BIAS CURRENT (µA)
350
300
250
200
150
100
50
0
2.5
3.5
4.5 5.5
LOAD CURRENT (mA)
0
V
OUTMAX
(V)
V
OUTMIN
(V)
2.00
2.05
800
3447 G05
1.95
1.90
200
400
600
1000
2.10
0.70
0.75
0.65
0.60
0.80
DAC
0
ERROR (LSB)
0.5
0.4
0.3
0.2
0.1
0
–0.1
–0.2
–0.3
–0.4
–0.5
20
40
50
3447 G04
10
30
60
INL
DNL
SHUTDOWN CURRENT (µA)
3.0
2.5
2.0
1.5
1.0
0.5
0
DAC = MAX
DAC = MIN
V
IN
= 3.6V
V
IN
= 2.5V
V
IN
= 3.6V
V
IN
= 2.5V
PULSE SKIP
BURST
BIAS CURRENT (mA)
360
310
260
210
160
BIAS CURRENT
SHUTDOWN CURRENT
V
IN
= 5.5V
V
IN
= 2.5V
V
IN
= 3.6V
V
IN
= 5.5V
V
IN
= 2.5V
V
IN
= 3.6V
LOSS
MIN
V
OUTMAX
V
OUTMIN
LOSS
MAX
LOAD CURRENT (mA)
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
10 100 1000
3447 GO1
1
LOAD CURRENT (mA)
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
10 100 1000
3447 G02
1
V
OUTMAX
V
OUTMIN
LOSS
MAX
LOSS
MIN
LOAD CURRENT (mA)
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
10 100 1000
3447 G03
1
POWER LOSS (mW)
1000
100
10
1
1000
100
10
1
V
OUTMAX
V
OUTMIN
LOSS
MAX
LOSS
MIN
POWER LOSS (mW)
1000
100
10
1
TYPICAL PERFOR A CE CHARACTERISTICS
UW
EffIciency and Power Loss vs
Load Current (V
IN
= 3.6V)DAC Nonlinearity
Output Voltage vs Load Current Bias Current vs Supply Voltage
Frequency vs Supply Voltage Frequency vs Temperature
Bias Current and Shutdown
Current vs Temperature
EffIciency and Power Loss vs
Load Current (V
IN
= 2.5V)
Effi ciency and Power Loss vs
Load Current (V
IN
= 5.5V)