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| LTC3459ES6TRMPBF Datasheet, PDF (4/12 Pages) Linear Technology – 10V Micropower Synchronous Boost Converter | |||
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LTC3459
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C, unless otherwise noted).
Minimum ROUT vs VIN
4000
3500
3000
2500
VOUT = 10V
VOUT = 7.5V
VOUT = 5V
VOUT = 3.3V
L = 22μH
2000
1500
1000
500
0
1.5 2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
3459 G01
Maximum POUT vs VIN
400
VOUT = 10V
350
VOUT = 7.5V
VOUT = 5V
300
VOUT = 3.3V
L = 22μH
250
200
150
100
50
0
1.5 2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
3459 G02
VIN and VOUT Quiescent Current
vs Temperature
16
VIN = 3.3V
14 VOUT = 5V
12
IIN
10
8
6
4
2
IOUT
0
â40 â20
0 20 40 60
TEMPERATURE (°C)
80
3459 G03
Switching Frequency
vs VIN at Various VOUTs
3.0
VOUT = 10V
VOUT = 7.5V
2.5
VOUT = 5V
VOUT = 3.3V
L = 22μH
2.0
1.5
1.0
0.5
1.5 2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
3459 G04
VOUT Regulation vs VIN and COUT
2.0
4.7μF
1.5
10μF
22μF
1.0
47μF
VOUT = 5V
0.5 L = 22μH
0
â0.5
â1.0
â1.5
â2.0
1.5 2 2.5 3 3.5 4 4.5 5 5.5
VIN (V)
3459 G05
N-Channel and P-Channel
MOSFET RDS(ON) vs Temperature
6
VOUT = 5V
5
PCH
4
NCH
3
2
1
0
â40 â20
0 20 40 60
TEMPERATURE (°C)
80
3459 G06
Shutdown Threshold Voltage
vs Temperature
1.2
Burst Cycle
Switch Pin Waveform
1.0
SHDN RISING
0.8
SHDN FALLING
0.6
0.4
SW
CURRENT
50mA/DIV
INDUCTOR
CURRENT
50mA/DIV
SW
CURRENT
50mA/DIV
INDUCTOR
CURRENT
50mA/DIV
0.2
0
â40 â20
0 20 40 60
TEMPERATURE (°C)
80
3459 G07
VIN = 3.3V
VOUT = 5V
L = 22μH
1μs/DIV
3459 G08
VIN = 3.3V
VOUT = 5V
L = 22μH
100ns/DIV
3459 G09
3459fc
4
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