參數(shù)資料
型號(hào): LT1912EMSE#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 4.2 A SWITCHING REGULATOR, 240 kHz SWITCHING FREQ-MAX, PDSO10
封裝: LEAD FREE, PLASTIC, MSOP-10
文件頁(yè)數(shù): 19/24頁(yè)
文件大?。?/td> 365K
代理商: LT1912EMSE#PBF
LT1912
4
1912fa
TYPICAL PERFORMANCE CHARACTERISTICS T
A = 25°C, unless otherwise noted.
SWITCH CURRENT (mA)
0
BOOST
PIN
CURRENT
(mA)
10
30
40
50
80
1912 G08
20
60
70
0
1500
500
1000
2000
2500
LOAD CURRENT (A)
0
50
EFFICIENCY
(%)
100
0.2 0.4 0.6 0.8
1.2 1.4 1.6 1.8 2.0
1.0
1912 G01
60
90
80
70
VIN = 24V
VIN = 34V
VIN = 12V
L: NEC PLC-0745-5R6
f: 500kHz
VOUT = 5V
0 0.2 0.4 0.6 0.8
1.2 1.4 1.6 1.8 2.0
1.0
LOAD CURRENT (A)
50
EFFICIENCY
(%)
90
1912 G02
60
65
55
85
80
70
75
VIN = 12V
VIN = 7V
L: NEC PLC-0745-5R6
f: 500kHz
VIN = 24V
VIN = 34V
VOUT = 3.3V
INPUT VOLTAGE (V)
5
LOAD
CURRENT
(A)
15
1912 G03
2.5
10
20
1.5
1.0
4.0
3.5
3.0
2.0
25
30
TYPICAL
MINIMUM
VOUT = 3.3V
L = 4.7H
f = 500kHz
SWITCH CURRENT (mA)
0
400
500
700
1500
1912 G07
300
200
500
1000
2000
2500
100
0
600
VOL
TAGE
DROP
(mV)
Efficiency
Boost Pin Current
Switch Voltage Drop
Maximum Load Current
DUTY CYCLE (%)
0
SWITCH
CURRENT
LIMIT(A)
40
1912 G05
2.5
20
60
1.5
1.0
4.0
3.5
3.0
2.0
80
100
INPUT VOLTAGE (V)
5
LOAD
CURRENT
(A)
15
1912 G04
2.5
10
20
1.5
1.0
3.5
3.0
2.0
25
30
TYPICAL
MINIMUM
VOUT = 5V
L = 4.7H
f = 500kHz
TEMPERATURE (°C)
SWITCH
CURRENT
LIMIT
(A)
2.0
2.5
3.5
3.0
1912 G06
1.5
1.0
0
0.5
4.5
4.0
DUTY CYCLE = 10 %
DUTY CYCLE = 90 %
–50
25
–25
0
50
75 100
150
125
Switch Current Limit
Maximum Load Current
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