參數(shù)資料
型號(hào): LT1933
廠商: Linear Technology Corporation
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述: 抗輻射高效,5安培開(kāi)關(guān)穩(wěn)壓器
文件頁(yè)數(shù): 4/16頁(yè)
文件大小: 629K
代理商: LT1933
4
LT1933
1933f
TYPICAL PERFOR AU
Frequency Foldback
700
T
A
= 25
°
C
Soft-Start
SHDN Pin Current
Typical Minimum Input Voltage
Typical Minimum Input Voltage
Operating Waveforms
Operating Waveforms,
Discontinuous Mode
FB PIN VOLTAGE (V)
0.0
S
600
300
100
400
500
200
0
0.5
1933 G10
1.0
1.5
SHDN PIN VOLTAGE (V)
0
S
1.4
1.2
0.6
0.2
0.8
1.0
0.4
0
1
1933 G11
2
3
4
T
= 25
°
C
DC = 30%
0
S
μ
A
200
150
50
100
0
4
SHDN PIN VOLTAGE (V)
1933 G12
8
12
16
T
A
= 25
°
C
Switch Current Limit
TEMPERATURE (
°
C)
–50
S
1.4
1.2
1.0
0.6
0
0.2
0.8
0.4
–25
0
25
1933 G15
50
75
100
125
LOAD CURRENT (mA)
5
I
6
7
8
1933 G13
4
V
OUT
= 5V
T
°
C
L = 33
μ
H
TO START
TO RUN
1
10
100
LOAD CURRENT (mA)
4.5
I
5.0
5.5
6.0
1933 G14
3.0
3.5
4.0
V
OUT
= 3.3V
T
°
C
L = 22
μ
H
TO START
TO RUN
1
10
100
V
SW
10V/DIV
I
L
200mA/DIV
V
OUT
10mV/DIV
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 400mA,
L = 22
μ
H, C
OUT
= 22
μ
F
1933 G16
V
SW
10V/DIV
I
L
200mA/DIV
V
OUT
10mV/DIV
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 20mA,
L = 22
μ
H, C
OUT
= 22
μ
F
1933 G16
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