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參數(shù)資料
| 型號： | LT1932ES6#TRM |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.78 A SWITCHING REGULATOR, 1600 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | PLASTIC, SOT-23, 6 PIN |
| 文件頁數(shù)： | 16/16頁 |
| 文件大小： | 235K |
| 代理商： | LT1932ES6#TRM |
9
LT1932
APPLICATIO S I FOR ATIO
WU
UU
TYPICAL APPLICATIO S
U
Figure 7. Recommended Component Placement
C1
L1
D1
GND
C2
RSET
1932 F07
1
2
3
6
5
4
DIMMING
CONTROL
SHDN
VIN
Board Layout Considerations
As with all switching regulators, careful attention must be
paid to the PCB board layout and component placement.
To maximize efficiency, switch rise and fall times are made
as short as possible. To prevent radiation and high fre-
quency resonance problems, proper layout of the high
frequency switching path is essential. Minimize the length
and area of all traces connected to the SW pin and always
use a ground plane under the switching regulator to
minimize interplane coupling. The signal path including
the switch, output diode D1 and output capacitor C2,
contains nanosecond rise and fall times and should be
kept as short as possible. In addition, the ground connec-
tion for the RSET resistor should be tied directly to the GND
pin and not be shared with any other component, ensuring
a clean, noise-free connection. Recommended compo-
nent placement is shown in Figure 7.
5V Driver for 16 White LEDs
VIN
SW
D1
30mA
1932 TA14a
L1
10
H
VIN
5V
LT1932
SHDN
C1: TAIYO YUDEN JMK212BJ475
(408) 573-4150
C2: TAIYO YUDEN GMK325BJ225
(408) 573-4150
D1: ZETEX ZHCS400
(631) 543-7100
L1: MURATA LQH3C100M24
(814) 237-1431
61
4
RSET
750
5V DC
DIMMING
CONTROL
C1
4.7
F
C2
2.2
F
51.1k
2
3
100
5
LED
RSET
GND
100
Efficiency
LED CURRENT (mA)
0
50
EFFICIENCY
(%)
55
60
65
70
75
80
10
20
30
515
25
1932 TA14b
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| LT1933HS6 | 1.05 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO6 |
| LT1933IDCB#PBF | 1.05 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO6 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LT1932ES6TRMPBF | 制造商:Linear Technology 功能描述:LED Driver 8-Seg 1.8/2.5/3.3/5/9V TSOT23 |
| LT1933 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.4A, 500kHz Step-Down Switching Regulator |
| LT1933_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:600mA, 500kHz Step-Down Switching Regulator in SOT-23 and DFN Packages |
| LT1933ES6 | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 3.6V to 36V 6-Pin TSOT-23 |
| LT1933ES6#PBF | 制造商:Linear Technology 功能描述:IC STEP-DOWN REGULATOR 6-TSOT-23 |
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