LTC3544EUD-PBF 查看數據表（PDF） - Linear Technology
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LTC3544EUD-PBF
Linear Technology
LTC3544EUD-PBF Datasheet PDF : 16 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LTC3544
Efficiency vs Load Current 300mA
Channel. All Other Channels Off
100
90
80
70
60
50
40
30
20
10
0
0.0001
VIN = 2.25V
VIN = 3.6V
VIN = 4.2V
VOUT = 1.8V
TA = 25°C
ALL OTHER
CHANNELS OFF
0.001
0.01
0.1
1
LOAD CURRENT (A)
3544 G07
Efficiency vs Load Current 200mA
Channel A. All Other Channels Off
100
VIN = 2.25V
90
VIN = 3.6V
80
VIN = 4.2V
70
60
50
40
30
20
10
0
0.0001
VOUT = 0.8V
TA = 25°C
ALL OTHER CHANNELS OFF
0.001
0.01
0.1
1
LOAD CURRENT (A)
3544 G08
Efficiency vs Load Current 200mA
Channel B. All Other Channels Off
100
90
80
70
60
50
40
30
20
10
0
0.0001
VIN = 2.25V
VIN = 3.6V
VIN = 4.2V
VOUT = 1.5V
TA = 25°C
ALL OTHER
CHANNELS OFF
0.001
0.01
0.1
1
LOAD CURRENT (A)
3544 G09
Efficiency vs Load Current 100mA
Channel. All Other Channels Off
100
90
80
70
60
50
40
30
20
10
0
0.0001
VIN = 2.25V
VIN = 3.6V
VIN = 4.2V
VOUT = 1.2V
TA = 25°C
ALL OTHER
CHANNELS OFF
0.001
0.01
0.1
1
LOAD CURRENT (A)
3544 G10
Load Regulation
All Channels
1.2
100mA = 1.2V
1.0
200mA (A) = 0.8V
200mA (B) = 1.5V
300mA = 1.8V
0.8
VIN = 3.6V
TA = 25°C
0.6
Burst Mode OPERATION
0.4
RIPPLE
0.2
0
–0.2
0
100
200
300
400
LOAD (mA)
3544 G11
Start-Up Curves
All Channels
VOUT100
VOUT200A
VOUT200B
VOUT300
RUNx
VIN = 3.6V
200μs/DIV
TA = 25°C
ALL CHANNELS UNLOADED
Load Step Response
300mA Channel
VOUT300
100mV/DIV
AC
COUPLED
IL
250mA/DIV
ILOAD
250mA/DIV
VIN = 3.6V
20μs/DIV
VOUT = 1.8V
TA = 25°C
ILOAD = 600μA TO 300mA
Load Step Response
200mA Channel A
VOUT200A
50mV/DIV
AC
COUPLED
IL
250mA/DIV
ILOAD
250mA/DIV
3544 G13
VIN = 3.6V
20μs/DIV
VOUT = 0.8V
TA = 25°C
ILOAD = 600μA TO 200mA
Load Step Response
200mA Channel B
VOUT200B
50mV/DIV
AC COUPLED
IL
250mA/DIV
ILOAD
250mA/DIV
3544 G14
VIN = 3.6V
20μs/DIV
VOUT = 1.5V
TA = 25°C
ILOAD = 600μA TO 200mA
3544 G12
3544 G15
3544fa
5
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