參數(shù)資料
型號(hào): LT1934IS6#TRM
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 0.49 A SWITCHING REGULATOR, PDSO6
封裝: 1 MM HEIGHT, PLASTIC, MO-193, TSOT-6
文件頁數(shù): 15/20頁
文件大小: 234K
代理商: LT1934IS6#TRM
LT1934/LT1934-1
4
1934fe
TYPICAL PERFORMANCE CHARACTERISTICS
LT1934-1 Efciency, VOUT = 3.3V
Current Limit vs Temperature
Off Time vs Temperature
Frequency Foldback
VFB vs Temperature
SHDN Bias Current
vs SHDN Voltage
LT1934 Efciency, VOUT = 5V
LT1934 Efciency, VOUT = 3.3V
LT1934-1 Efciency, VOUT = 5V
LOAD CURRENT (mA)
60
EFFICIENCY
(%)
70
80
90
100
0.1
10
100
1934 G01
50
1
LT1934
VOUT = 5V
L = 47μH
TA = 25°C
VIN = 12V
VIN = 24V
LOAD CURRENT (mA)
60
EFFICIENCY
(%)
70
80
90
100
0.1
10
100
1934 G02
50
1
LT1934
VOUT = 3.3V
L = 47μH
TA = 25°C
VIN = 24V
VIN = 5V
VIN = 12V
LOAD CURRENT (mA)
0.1
50
EFFICIENCY
(%)
80
90
100
1
10
100
1934 G03
70
60
LT1934-1
VOUT = 5V
L = 150μH
TA = 25°C
VIN = 24V
VIN = 12V
LOAD CURRENT (mA)
0.1
50
EFFICIENCY
(%)
80
90
100
1
10
100
1934 G04
70
60
LT1934-1
VOUT = 3.3V
L = 100μH
TA = 25°C
VIN = 24V
VIN = 12V
TEMPERATURE (°C)
–50
–25
0
SWITCH
CURRENT
LIMIT
(mA)
200
500
0
50
75
1934 G05
100
400
300
25
100
125
LT1934
LT1934-1
TEMPERATURE (°C)
–50
OFF
TIME
(
μ
s)
2.0
2.5
3.0
25
75
1934 G06
1.5
1.0
–25
0
50
100
125
0.5
0
FEEDBACK PIN VOLTAGE (V)
0
SWITCH
OFF
TIME
(
μ
s)
6
8
10
0.6
1.0
1934 G07
4
2
0
0.2
0.4
0.8
12
14
16
1.2
TA = 25 C
TEMPERATURE (°C)
–50
–25
1.22
FEEDBACK
VOLTAGE
(V)
1.24
1.27
0
50
75
1934 G08
1.23
1.26
1.25
25
100
125
SHDN PIN VOLTAGE (V)
0
SHDN
PIN
CURRENT
(μA)
0.5
1.0
1.5
2.0
24
6
8
1934 G09
10
12
TA = 25°C
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