参数资料
型号: LTC3568IDD#PBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: 4 A SWITCHING REGULATOR, 4000 kHz SWITCHING FREQ-MAX, PDSO10
封装: 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10
文件页数: 13/18页
文件大小: 300K
代理商: LTC3568IDD#PBF
LTC3568
3568fa
VIN = 3.3V
VOUT = 2.5V
ILOAD = 100mA
VOUT
10mV/
DIV
IL
500mA/
DIV
SW
2V/DIV
10s/DIV
3568 G01
VIN = 3.3V
VOUT = 2.5V
ILOAD = 100mA
VOUT
10mV/
DIV
IL
200mA/
DIV
SW
2V/DIV
2s/DIV
3568 G02
VIN = 3.3V
VOUT = 2.5V
ILOAD = 100mA
VOUT
10mV/
DIV
IL
500mA/
DIV
2s/DIV
3568 G03
SW
2V/DIV
Typical perForMance characTerisTics
BurstModeOperation
PulseSkippingMode
ForcedContinuousMode
EfficiencyvsLoadCurrent
EfficiencyvsVIN
LoadStep
LOAD CURRENT (mA)
EFFICIENCY
(%)
100
95
90
85
80
75
70
1
100
1000
10000
3568 G04
10
VIN = 3.3V
VOUT = 2.5V
CIRCUIT OF FIGURE 7
Burst Mode
OPERATION
PULSE SKIP
FORCED CONTINUOUS
2.5
3.5
4.5
5.5
3.0
4.0
5.0
6.0
VIN (V)
EFFICIENCY
(%)
100
95
90
85
80
75
70
65
60
3568 G05
IOUT = 500mA
IOUT = 1.8A
VOUT = 2.5V
CIRCUIT OF FIGURE 7
VIN = 3.3V
VOUT = 2.5V
ILOAD = 180mA TO 1.8A
VOUT
100mV/
DIV
IL
1A/
DIV
50s/DIV
3568 G06
1
10
100
1000
10000
LOAD CURRENT (mA)
V OUT
ERROR
(%)
3568 G07
Burst Mode
OPERATION
PULSE SKIP
FORCED
CONTINUOUS
VIN = 3.3V
VOUT = 1.8V
0.6
0.5
0.4
0.3
0.2
0.1
–0.4
–0.3
–0.2
–0.1
0
2.0
3.0
4.0
5.0
2.5
3.5
4.5
5.5 6.0
VIN (V)
V OUT
ERROR
(%)
0.20
0.15
0.10
0.05
–0.20
–0.15
–0.10
–0.05
0
3568 G08
VOUT = 1.8V
IOUT = 1.8A
IOUT = 500mA
2
3
4
5
6
VIN (V)
FREQUENCY
VARIATION
(%)
10
8
6
4
2
0
–2
–4
–6
–8
–10
3568 G09
VOUT = 1.8V
IOUT = 1.25A
TA = 25°C
LoadRegulation
LineRegulation
FrequencyvsVIN
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