AAT1218 Datasheet, PDF (6/15 Pages) Advanced Analogic Technologies – 1A, 1.2MHz Synchronous Boost Converter

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PRODUCT DATASHEET
AAT1218
1A, 1.2MHz Synchronous Boost Converter
Typical Characteristics
V_IN = 3.6V, V_OUT = 3.6V, C_IN = 22μF, C_OUT = 44uF; L = 2.2μH; T_A = 25°C, unless otherwise noted.
Maximum Load Current at Startup vs. V_IN
AAT1218 3.3V Output Efficiency
10000
1000
100
VOUT = 3.3V
10
VOUT = 5V
0.85 1.35 1.85 2.35 2.85 3.35 3.85 4.35 4.85
Input Voltage (V)
100
90
80
70
60
50
40
30
20
10
0
0.1
VIN = 1.2V
VIN = 1.5V
V_IN = 1.8V
VIN = 2.4V
1
10
100
1000
ILOAD (mA)
AAT1218 5.0V Output Efficiency
100
90
80
70
60
50
40
30
20
10
0
0.1
VIN = 1.2V
VIN = 1.5V
V_IN = 2.4V
1
10
100
1000
ILOAD (mA)
AAT1218 5.0V Output Efficiency
100
90
80
70
60
50
40
30
20
10
0
0.1
1
10
100
ILOAD (mA)
VIN = 3.0V
VIN = 3.3V
V_IN = 3.6V
VIN = 4.2V
1000
10000
Soft Start Waveform
(V_IN = 1.5V; V_OUT = 5V; Load = 100mA)
LX
(4V/div)
0
V_OUT
(4V/div)
0
I_IN
(0.5A/div) ₀
V_EN
(1V/div)
0
Time (200µs/div)
Anti-Ringing Operation
(V_IN = 3V; V_OUT = 5V; Load = 10mA)
V_OUT
(AC Coupled) ₀
(20mV/div)
LX
(2V/div) ₀
Time (0.2µs/div)
6
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1218.2008.10.1.1