音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

LT1533C Datasheet

  • LT1533C

  • Linear Technology [Ultralow Noise 1A Switching Regulator]

  • LINER

掃碼查看芯片數(shù)據(jù)手冊(cè)

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

LT1533
APPLICATIONS INFORMATION
Output ripple current at maximum input (DC = 34.7%) is:
鈭咺
OUT
=
12 1
鈭?/div>
2
鈥?/div>
34
.
7
%
800
碌
H
鈥?/div>
50kHz
(
)
=
92mA
The maximum inductor current is:
I
LMAX
=
150mA
+
92mA
=
196mA
2
Primary inductance should be greater than:
L
PRI
=
5
鈥?/div>
800
碌
H
3
.
6
2
=
309
碌
H
The magnetizing ripple current is approximately:
12
+
0
.
5
鈭咺
MAG
=
=
225mA
3
.
6
鈥?/div>
309
碌
H
鈥?/div>
50kHz
Peak switch current is:
I
SW(PEAK)
= 3.6 鈥?196mA + 225mA = 930mA
which is less than the 1A maximum switch current.
Note that you can discern your magnetizing ripple by
looking at the reflected inductance ripple and subtracting
the switch current ripple.
鈭咺
MAG
= N 鈥?/div>
鈭咺
L
鈥?/div>
鈭咺
SW
With knowledge of turns ratio and primary inductance
along with volt/sec requirements (to prevent saturation)
the transformer can be designed.
Transformers are available from Coiltronics for some
standard applications. Figure 5 lists them. Variations are
available from Coiltronics at 561-241-7876. Also, see
Linear Technology鈥檚 Application Notes AN19, AN44 and
AN70 for further information about magnetics.
Capacitors
Correct choice of input and output capacitors can be very
important to low noise switcher performance. Push-pull
topologies and other low noise topologies will in general
have continuous currents which reduce the requirements
U
W
U
U
NOMINAL
INPUT
VOLTAGE
5V
5V
5V
5V
5V
5V
NOMINAL
OUTPUT VOLTAGE
AFTER LINEAR
REGULATOR
12V
12V
鹵15V
鹵15V
12V
12V
A
OUTPUT
POWER
1.5W
3.0W
1.5W
3.0W
1.5W
10W
COILTRONICS
PART
NUMBER
CTX02-13716-X1
CTX02-13665-X1
CTX02-13713-X1
CTX02-13664-X1
CTX02-13834-X3*
CTX02-13949-X1
B
CONNECTION
DIAGRAM
A
A
B
B
A
A
2
PRIMARY A
3
4
PRIMARY B
5
12
SECTION A
10
9
SECTION B
7
2
PRIMARY A
3
4
PRIMARY B
5
12
SECTION A
10
9
SECTION B
7
TIE OUTPUT
COMMON TO
THIS POINT
= TIED TOGETHER
*=HIGH TURNS RATIO VERSION OF CTX-02-13716-X1.
ACCOMMODATES LOW SUPPLY VOLTAGES OR
HIGH DROPOUT REGULATORS
1533 F05
Figure 5. Transformers for Typical Applications
for capacitance. However, noise depends more on the ESR
of the capacitors.
Input capacitors must also withstand surges that occur
during the switching of some types of loads. Some solid
tantalum capacitors can fail under these surge conditions.
Design Note 95 offers more information but the following
is a brief summary of capacitor types and attributes.
Aluminum Electrolytic: Low cost and higher voltage but in
general don鈥檛 use with this part because of high ESR and
poor high frequency performance.
Specialty Polymer Aluminum: Panasonic has come out
with their series CD capacitors. While they are only avail-
able for voltages below 16V, they have very low ESR and
good surge capability.
Solid Tantalum: Small size and low impedance. Typically
available for voltages below 50V. Possible problem with
surge currents (AVX TPS line addresses this issue).
OS-CON: Lower impedance than aluminum but only avail-
able for 25V or less. Form factor may be a problem.
Sometimes their very low ESR can cause loop stability
problems.
13

LT1533C相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
    版本
    描述
    廠商
    下載
  • 英文版
    Seoul Semiconductor [Infrared LAMP LED]
    SEOUL
  • 英文版
    Adaptive-Frequency Current Mode Switching Regulators
    LINER
  • 英文版
    Adaptive-Frequency Current Mode Switching Regulators
    Linear
  • 英文版
    Adaptive-Frequency Current Mode Switching Regulators
    LINER
  • 英文版
    Adaptive-Frequency Current Mode Switching Regulators
    Linear
  • 英文版
    Constant-Current/Voltage High Efficiency Battery Charger
    LINER
  • 英文版
    Constant-Current/Voltage High Efficiency Battery Charger
    Linear
  • 英文版
    4.5A, 500kHz Step-Down Switching Regulator
    LINER
  • 英文版
    4.5A, 500kHz Step-Down Switching Regulator
    Linear
  • 英文版
    4.5A, 500kHz Step-Down Switching Regulator
    Linear
  • 英文版
    500kHz Monolithic Buck Mode Switching Regulator
    LINER
  • 英文版
    500kHz Monolithic Buck Mode Switching Regulator
    Linear
  • 英文版
    Power Factor and PWM Controller(Voltage Mode)
    LINER
  • 英文版
    Power Factor and PWM Controller (Voltage Mode)
    Linear
  • 英文版
    Power Factor and PWM Controller (Voltage Mode)
    Linear
  • 英文版
    Power Factor and PWM Controller
    LINER
  • 英文版
    Power Factor and PWM Controller
    Linear
  • 英文版
    3 Amp Positive Adjustable Regulator
    Linear
  • 英文版
    Seoul Semiconductor [GREEN OVAL LAMP LED]
    SEOUL
  • 英文版
    Constant-Voltage/ Constant-Current Battery Charger
    LINER

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時(shí)間周一至周五
9:00-17:30

關(guān)注官方微信號(hào)，
第一時(shí)間獲取資訊。

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動(dòng)力！意見一經(jīng)采納，將有感恩紅包奉上哦！