LTC3245 Datasheet, PDF (4/16 Pages) Linear Technology – Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump

LTC3245
Typical Performance Characteristics T_A = 25°C, unless otherwise noted.
Input Operating Current
vs Input Voltage
50
BURST = 0V
45
40
35
30
25
V_OUT = 5V
20
15
V_OUT = 3.3V
10
5
0
0 5 10 15 20 25 30 35 40
V_IN (V)
3245 G01
5V Fixed Output Voltage
vs Input Voltage (Burst Mode
Operation)
5.20
5.15
5.10
I_OUT = 0mA
5.05
5.00
4.95
I_OUT = 150mA
4.90
I_OUT = 250mA
4.85
4.80
2 3 4 5 6 7 8 9 10 11 12 13 14 15
V_IN (V)
3245 G04
3.3V Fixed Output Voltage
vs Input Voltage (Burst Mode
Operation)
3.50
3.45
3.40
3.35
I_OUT = 0mA
3.30
3.25
3.20
I_OUT = 250mA ^{IOUT = 150mA}
3.15
3.10
2 3 4 5 6 7 8 9 10 11 12 13 14 15
V_IN (V)
3245 G07
Input Shutdown Current
vs Input Voltage
20
18
16
14
150°C
12
10
125°C
8
6
25°C
4
–55°C
2
0
0 5 10 15 20 25 30 35 40
V_IN (V)
3245 G02
5V Fixed Output Voltage
vs Input Voltage (Low Noise
Operation)
5.20
5.15
5.10
5.05
I_OUT = 0mA
5.00
I_OUT = 150mA
4.95
I_OUT = 250mA
4.90
4.85
4.80
2 3 4 5 6 7 8 9 10 11 12 13 14 15
V_IN (V)
3245 G05
3.3V Fixed Output Voltage
vs Input Voltage (Low Noise
Operation)
3.50
3.45
3.40
3.35
I_OUT = 0mA
3.30
I_OUT = 150mA
3.25
I_OUT = 250mA
3.20
3.15
3.10
2 3 4 5 6 7 8 9 10 11 12 13 14 15
V_IN (V)
3245 G08
4
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Oscillator Frequency
vs Temperature
500
475
450
425
400
375
350
325
300
–60 –30
0 30 60 90
TEMPERATURE (°C)
120 150
3245 G03
5V Fixed Efficiency
vs Output Current
100
V_IN = 12V
90
Burst Mode OPERATION
80
70
60
LOW NOISE
50
40
30
20
10
0
0.1
1
10
100
1000
I_OUT (mA)
3245 G06
3.3V Fixed Output Efficiency
vs Output Current
100
V_IN = 9V
90
80
Burst Mode OPERATION
70
60
LOW NOISE
50
40
30
20
10
0
0.1
1
10
100
1000
I_OUT (mA)
3245 G09
3245f