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| LTC3400B_15 Datasheet, PDF (3/12 Pages) Linear Technology – 600mA, 1.2MHz Micropower Synchronous Boost Converter in ThinSOT | |||
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LTC3400/LTC3400B
TYPICAL PERFOR A CE CHARACTERISTICS
Output Load Burst Mode Threshold
vs VIN
L = 4.7µH
TA = 25°C
20
VOUT = 3.3V VOUT = 5V
10
0
0.9 1.5 2.1 2.7 3.3 3.9 4.5
VIN (V)
3400 G01
No Load Battery Current vs VBATT
1000
VOUT = 3.3V
TA = 25°C
100
10
0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
BATTERY VOLTAGE (V)
3400 G04
SW Pin Fixed Frequency,
Continuous Inductor Current
Operation
VOUT vs Temperature
3.36
FIGURE 1 CIRCUIT
IO = 10mA
3.34
3.32
3.30
3.28
3.26
3.24
â60 â30 0
30 60
TEMPERATURE (°C)
90 120
3400 G02
Normalized Oscillator Frequency
vs Temperature
1.01
1.00
0.99
0.98
0.97
0.96
0.95
â50 â30
â10 10 30 50
TEMPERATURE (°C)
70 90
3400 G05
Minimum Start-Up Voltage
vs Load Current
1.4
TA = 25°C
1.3
1.2
1.1
1.0
0.9
0.8
0.1
1
10
100
IOUT (mA) CURRENT SOURCE LOAD
3400 G03
SW Pin Antiringing Operation
VSW
1V/DIV
0V
VIN = 1.3V
VOUT = 3.3V
IOUT = 10mA
L = 6.8µH
COUT = 4.7µF
100ns/DIV
3400 G06
Fixed Frequency and Burst Mode
Operation
VOUT Transient Response
VSW
1V/DIV
0V
VIN = 1.3V
VOUT = 3.3V
IOUT = 50mA
L = 6.8µH
COUT = 4.7µF
100ns/DIV
VOUT(AC)
100mV/DIV
60mA
IOUT
10µA
3400 G07
VIN = 1.3V
10ms/DIV
VOUT = 3.3V
IOUT = 60mA TO 10µA
L = 6.8µH
COUT = 4.7µF
VOUT(AC)
100mV/DIV
3400 G08
100mA
IOUT
40mA
VIN = 1.3V
100µs/DIV
VOUT = 3.3V
IOUT = 40mA TO 100mA
L = 6.8µH
COUT = 4.7µF
3400 G09
3400fa
3
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