参数资料
型号: LT1933HDCB
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: 1.05 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO6
封装: 2 X 3 MM, 0.75 MM HEIGHT, PLASTIC, MO-229, DFN-6
文件页数: 15/20页
文件大小: 357K
代理商: LT1933HDCB
LT1933
4
1933fe
TYPICAL PERFORMANCE CHARACTERISTICS
Efciency, VOUT = 5V
Efciency, VOUT = 3.3V
Switch Current Limit
Maximum Load Current
Switch Voltage Drop
Feedback Voltage
Undervoltage Lockout
Switching Frequency
LOAD CURRENT (mA)
0
80
90
100
300
400
1933 G01
70
100
200
600
500
60
EFFICIENCY
(%)
VIN = 24V
VIN = 12V
TA = 25°C
VOUT = 5V
D1 = MBRM140
L1 = Toko D53LCB 33μH
LOAD CURRENT (mA)
0
80
90
100
300
400
1933 G02
70
100
200
600
500
60
EFFICIENCY
(%)
VIN = 24V
VIN = 12V
VIN = 5V
TA = 25°C
VOUT = 3.3V
D1 = MBRM140
L1 = Toko D53LCB 22μH
DUTY CYCLE (%)
0
SWITCH
CURRENT
LIMIT
(mA)
600
800
1200
1000
80
1933 G03
400
200
0
20
40
60
100
MINIMUM
TYPICAL
TA = 25°C
INPUT VOLTAGE (V)
0
LOAD
CURRENT
(mA)
600
700
20
1933 G04
500
400
5
10
15
30
25
800
L = 22μH
L = 33μH
TA = 25°C
VOUT = 5V
INPUT VOLTAGE (V)
0
LOAD
CURRENT
(mA)
600
700
20
1933 G05
500
400
5
10
15
30
25
800
L = 22μH
L = 15μH
TA = 25°C
VOUT = 3.3V
SWITCH CURRENT (A)
0
SWITCH
VOL
TAGE
(mV)
100
200
300
400
600
500
0.2
0.4
1933 G06
0.6
0.1
0.3
0.5
TA = 85°C
TA = 25°C
TA = –40°C
TEMPERATURE (°C)
FEEDBACK
VOL
TAGE
(V)
1.260
1.255
1.250
1.240
1.230
1.245
1.235
1933 G07
–50 –25
0
25
50
75
100
150
125
TEMPERATURE (°C)
UVLO
(V)
3.8
3.6
3.4
3.2
3.0
1933 G08
–50 –25
0
25
50
75
100
150
125
TEMPERATURE (°C)
SWITCHING
FREQUENCY
(kHz)
600
550
500
450
400
1933 G09
–50 –25
0
25
50
75
100
150
125
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相关代理商/技术参数
参数描述
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