參數(shù)資料
型號: LTC3411IMS
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 2 A SWITCHING REGULATOR, 4000 kHz SWITCHING FREQ-MAX, PDSO10
封裝: PLASTIC, MSOP-10
文件頁數(shù): 20/24頁
文件大?。?/td> 247K
代理商: LTC3411IMS
LTC3411
5
3411fb
TYPICAL PERFORMANCE CHARACTERISTICS
Burst Mode Operation
Pulse Skipping Mode
Forced Continuous Mode
PIN FUNCTIONS
PIN
NAME
DESCRIPTION
NOMINAL (V)
ABSOLUTE MAX (V)
MIN
TYP
MAX
MIN
MAX
1
SHDN/RT
Shutdown/Timing Resistor
–0.3
0.8
SVIN
–0.3
SVIN + 0.3
2
SYNC/MODE
Mode Select/Sychronization Pin
0
SVIN
–0.3
SVIN + 0.3
3
SGND
Signal Ground
0
4
SW
Switch Node
0
PVIN
–0.3
PVIN + 0.3
5
PGND
Main Power Ground
0
6PVIN
Main Power Supply
–0.3
5.5
–0.3
SVIN + 0.3
7SVIN
Signal Power Supply
2.5
5.5
–0.3
6
8
PGOOD
Power Good Pin
0
SVIN
–0.3
6
9VFB
Output Feedback Pin
0
0.8
1.0
–0.3
SVIN + 0.3
10
ITH
Error Amplier Compensation and Run Pin
0
1.5
–0.3
SVIN + 0.3
2μs/DIV
VOUT
10mV/DIV
IL1
100mA/DIV
3411 G01
VIN = 3.3V
VOUT = 2.5V
ILOAD = 50mA
CIRCUIT OF FIGURE 7
2μs/DIV
VOUT
10mV/DIV
IL1
100mA/DIV
3411 G02
VIN = 3.3V
VOUT = 2.5V
ILOAD = 50mA
CIRCUIT OF FIGURE 7
2μs/DIV
VOUT
10mV/DIV
IL1
100mA/DIV
3411 G03
VIN = 3.3V
VOUT = 2.5V
ILOAD = 50mA
CIRCUIT OF FIGURE 7
Efciency vs Load Current
Efciency vs VIN
Load Step
LOAD CURRENT (mA)
EFFICIENCY
(%)
100
95
90
85
80
75
70
65
60
1
100
1000
10000
3411 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
VIN (V)
EFFICIENCY
(%)
100
95
90
85
80
75
70
65
60
3411 G05
IOUT = 400mA
IOUT = 1.25A
VOUT = 2.5V
CIRCUIT OF FIGURE 7
40μs/DIV
VOUT
100mV/DIV
IL1
0.5A/DIV
3411 G06
VIN = 3.3V
VOUT = 2.5V
ILOAD = 0.25A TO 1.25A
CIRCUIT OF FIGURE 7
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