參數(shù)資料
型號(hào)： CS5174ED8
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)壓器
英文描述： 1.5 A 280 kHz/560 kHz Boost Regulators
中文描述： 2.4 A SWITCHING REGULATOR, 620 kHz SWITCHING FREQ-MAX, PDSO8
封裝： SOIC-8
文件頁(yè)數(shù)： 17/22頁(yè)
文件大?。?/td> 184K
代理商： CS5174ED8
CS5171, CS5172, CS5173, CS5174
http://onsemi.com
17
TJ
where:
T
J
= IC or FET junction temperature (
°
C);
T
A
= ambient temperature (
°
C);
P
D
= power dissipated by part in question (W);
JA
= junctiontoambient thermal resistance (
°
C/W).
For the CS517x,
JA
=165
°
C/W.
Once the designer has calculated T
J
, the question of
whether the CS517x can be used in an application is settled.
If T
J
exceeds 150
°
C, the absolute maximum allowable
junction temperature, the CS517x is not suitable for that
application.
If T
J
approaches 150
°
C, the designer should consider
possible means of reducing the junction temperature.
Perhaps another converter topology could be selected to
reduce the switch current. Increasing the airflow across the
surface of the chip might be considered to reduce T
A
.
TA
(PD JA)
Circuit Layout Guidelines
In any switching power supply, circuit layout is very
important for proper operation. Rapidly switching currents
combined with trace inductance generates voltage
transitions that can cause problems. Therefore the following
guidelines should be followed in the layout.
1.
In boost circuits, high AC current circulates within the
loop composed of the diode, output capacitor, and
onchip power transistor. The length of associated
traces and leads should be kept as short as possible. In
the flyback circuit, high AC current loops exist on both
sides of the transformer. On the primary side, the loop
consists of the input capacitor, transformer, and
onchip power transistor, while the transformer,
rectifier diodes, and output capacitors form another
loop on the secondary side. Just as in the boost circuit,
all traces and leads containing large AC currents
should be kept short.
Separate the low current signal grounds from the
power grounds. Use single point grounding or ground
plane construction for the best results.
Locate the voltage feedback resistors as near the IC as
possible to keep the sensitive feedback wiring short.
Connect feedback resistors to the low current analog
ground.
2.
3.
ORDERING INFORMATION
Device
CS5171ED8
CS5171EDR8
CS5172ED8
CS5172EDR8
CS5173ED8
CS5173EDR8
CS5173EDR8G
Operating Temperature Range
Package
Shipping
95 Units/Rail
2500 Tape & Reel
95 Units/Rail
2500 Tape & Reel
95 Units/Rail
2500 Tape & Reel
2500 Tape & Reel
SOIC 8
SOIC8
40
°
C < T
J
< 125
°
C
SOIC8
(PbFree)
CS5174ED8
CS5174EDR8
CS5171GD8
CS5171GDR8
CS5171GDR8G
95 Units/Rail
2500 Tape & Reel
95 Units/Rail
2500 Tape & Reel
2500 Tape & Reel
SOIC 8
SOIC8
SOIC8
(PbFree)
CS5172GD8
CS5172GDR8
CS5173GD8
CS5173GDR8
CS5174GD8
CS5174GDR8
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
0
°
C < T
J
< 125
°
C
95 Units/Rail
2500 Tape & Reel
95 Units/Rail
2500 Tape & Reel
95 Units/Rail
2500 Tape & Reel
SOIC 8
SOIC8
相關(guān)PDF資料
PDF描述
CS5174GD8 1.5 A 280 kHz/560 kHz Boost Regulators
CS5174GDR8 1.5 A 280 kHz/560 kHz Boost Regulators
CS5172GDR8 1.5 A 280 kHz/560 kHz Boost Regulators
CS5173GDR8 1.5 A 280 kHz/560 kHz Boost Regulators
CS5172(中文) 1.5 A 280 kHz/560 kHz Boost Regulators(1.5 A 280 kHz/560 kHz，升壓調(diào)整器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CS5174ED8G 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 1.5A High Efficiency Boost RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
CS5174EDR8 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 1.5A High Efficiency RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
CS5174EDR8G 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 1.5A High Efficiency Boost RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
CS5174GD8 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 1.5A High Efficiency RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
CS5174GD8G 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 1.5A High Efficiency Boost RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
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