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参数资料
| 型号： | TS2576CM5-5.0 |
| 厂商： | Taiwan Semiconductor Co., Ltd. |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 3A Step Down Switching Voltage Regulator |
| 中文描述： | 第3A降压开关稳压器 |
| 文件页数： | 6/7页 |
| 文件大小： | 141K |
| 代理商： | TS2576CM5-5.0 |
TS2576
6-7
2003/12 rev. A
Grounding
To maintain output voltage stability, the power ground
connections must be low-impedance. For the 5-lead
TO-220 and TO-263 style package, both the tab and pin
3 are ground and rather connection may be used.
Thermal Characteristics
The output ripple voltage is due mainly to the inductor
sawtooth ripple current multiplied by the ESR of the
output capacitor. The output ripple voltage of a switching
power supply will contain a sawtooth ripple voltage at the
switcher frequency, typically about 1% of the output
voltages, and may also contain short voltage spokes of
the sawtooth waveform.
Due to the fast switching action, and the parasitic
inductance of the output filter capacitor, there is voltage
spikes presenting at the peaks of the sawtooth
waveform.
Cautions
must
capacitance. Wiring inductance, and even the scope
probes used for transients evaluation. To minimize these
voltage spikes, shortening the lead length and PCB
traces is always the first thought. Further more, an
additional small LC filter (30μH & 100μF) (as shown in
Figure 3) will possibly provide a 10X reduction in output
ripple voltage and transients.
Heatsink and Thermal Consideration
be
taken
for
stray
Although the TS2576 requires only a small heatsink for
most cases, the following thermal consideration is
important for all operation. With the package thermal
resistances
ja
and
jc
, total power dissipation can be
estimated as follows:
PD= (Vin x Iq) + (Vout / Vin) (Iout x Vsat);
When no heatsink is used, the junction temperature rise
can be determined by the following:
T
J
= PD
x
ja
With the ambient temperature, the actual junction
temperature will be:
Tj
=
Tj
+ Ta
If the actual operating junction temperature is out of the
safe operating junction temperature (typically 125
o
C),
then a heatsink is required. When using a heatsink, the
junction temperature rise will be reduced by the
following :
Tj= PD
x (
jc
+
interface
+
heatsink
);
Also one can see from the above, it is important to
choose an heatsink with adequate size and thermal
resistance, such that to maintain the regulator’s junction
temperature below the maximum operating temperature.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TS2576CM550 RN | 制造商:SKMI/Taiwan 功能描述:3A / 52KHZ BUCK SWITCHING REGULATOR |
| TS2576CM5RN | 制造商:Taiwan Semiconductor 功能描述:3A Step Dn Adj Sw Volt Reg TS2576CM5 RN |
| TS2576CZ5 | 功能描述:开关变换器、稳压器与控制器 Adjustable 3.0A RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| TS2576CZ5 C0 | 制造商:SKMI/Taiwan 功能描述:Conv DC-DC Single Step Down 4.5V to 40V 5-Pin(5+Tab) TO-220 Tube 制造商:Taiwan Semiconductor 功能描述:Conv DC-DC Single Step Down 4.5V to 40V 5-Pin(5+Tab) TO-220 Tube |
| TS2576CZ5-05 | 制造商:TSC 制造商全称:Taiwan Semiconductor Company, Ltd 功能描述:3A Step Down Switching Voltage Regulator |
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