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LT1932 датащи(PDF) 3 Page - Linear Technology

номер детали LT1932
подробное описание детали  Constant-Current DC/DC LED Driver in ThinSOT
PDF  16 Pages
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производитель  LINER [Linear Technology]
домашняя страница  http://www.linear.com
Logo LINER - Linear Technology

LT1932 датащи(HTML) 3 Page - Linear Technology

  LT1932 Datasheet HTML 1Page - Linear Technology LT1932 Datasheet HTML 2Page - Linear Technology LT1932 Datasheet HTML 3Page - Linear Technology LT1932 Datasheet HTML 4Page - Linear Technology LT1932 Datasheet HTML 5Page - Linear Technology LT1932 Datasheet HTML 6Page - Linear Technology LT1932 Datasheet HTML 7Page - Linear Technology LT1932 Datasheet HTML 8Page - Linear Technology LT1932 Datasheet HTML 9Page - Linear Technology Next Button
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LT1932
TYPICAL PERFOR A CE CHARACTERISTICS
Switch Saturation Voltage (VCESAT)
SWITCH CURRENT (mA)
0
150
200
250
300
500
1932 G01
100
50
0
100
200
400
300
350
400
600
TJ = 125°C
TJ = –50°C
TJ = 25°C
TEMPERATURE (
°C)
–50
400
500
700
25
75
1932 G02
300
200
–25
0
50
100
125
100
0
600
VIN = 1.2V
VIN = 10V
TEMPERATURE (
°C)
–50
0
0.2
0.6
0.8
1.0
2.0
1.4
0
50
75
1932 G03
0.4
1.6
1.8
1.2
–25
25
100
125
VIN = 1.2V
VIN = 10V
Switch Current Limit
Switching Frequency
LED Pin Voltage
LED Current
LED CURRENT (mA)
0
150
200
250
15
25
1932 G04
100
50
0
510
20
300
350
400
40
30
35
TJ = 125°C
TJ = 25°C
TJ = –50°C
TEMPERATURE (
°C)
–50
35
25
1932 G05
20
10
–25
0
50
5
0
40
45
50
30
25
15
75
100
125
RSET = 750Ω
RSET = 562Ω
RSET = 1.50k
RSET = 4.53k
Quiescent Current
SHDN Pin Current
LED Current
INPUT VOLTAGE (V)
0
35
6
1932 G06
20
10
24
5
0
40
45
50
30
25
15
810
RSET = 750Ω
RSET = 562Ω
RSET = 1.50k
RSET = 4.53k
TEMPERATURE (
°C)
–50
1.75
25
1932 G07
1.00
0.50
–25
0
50
0.25
0
2.00
1.50
1.25
0.75
75
100
125
VIN = 1.2V
VIN = 10V
SHDN PIN VOLTAGE (V)
0
30
40
50
8
1932 G08
20
10
25
35
45
15
5
0
2
4
6
10
TJ = 125°C
TJ = 25°C
TJ = –50°C
Switching Waveforms
VSW
10V/DIV
IL1
200mA/DIV
VOUT
20mV/DIV
AC COUPLED
ILED
10mA/DIV
VIN = 3V
0.5
µs/DIV
1093 G09
4 WHITE LEDs
ILED = 15mA
CIRCUIT ON FIRST PAGE
OF THIS DATA SHEET



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