Cxps4259 is a power switch circuit with only 100m Ω on internal resistance, which is applied to USB power supply. The built-in charge pump boosts the voltage to drive the NMOS power transistor. When it is in the off state, the reverse conduction current of the switch is eliminated by the parasitic reverse body diode. Low static power consumption (23 μ a) and small package (sot-23-5) are especially suitable for battery powered portable devices.
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[ CXPS4258 ]"
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一,产品概述(General Description) CXPS4258是一个低电压，高性能的单路功率开关，导通内阻只有70mΩ。内置电荷泵升压来驱动NMOS功率管，内部提供一个故障指示端口。为了适应不同的应用，设计了一个电流限制端口，通过外接电阻对电流限制点进行设置。保护电路包括防止上电过程中的涌入电流的软启电路，内置热关断保护电路，输出防反灌保护电路以及欠压保护电路等。可编程输出电流 输入电压：2.0V～5.5V USB 3G数据卡 需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！ 五,产品封装图 (Package)
六.电路原理图
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七,功能概述
|
Symbol |
Parameter |
Conditions |
Min. |
Typ. |
Max. |
Unit |
|
RDS(ON) |
Switch On Resistance |
IOUT = 1A |
70 |
80 |
mΩ |
|
|
ISW_ON |
Supply Current |
Switch On, VOUT = Open |
40 |
50 |
μA |
|
|
ISW_OFF |
Shutdown Current |
Switch Off, VOUT = Open |
0.1 |
1 |
μA |
|
|
VIL |
CE Threshold Logic-Low Voltage |
Switch Off |
0.8 |
V |
||
|
VIH |
CE Threshold Logic-High Voltage |
Switch On |
2.0 |
V |
||
|
ICE |
CE Input Current |
VCE = 0V to 5.5V |
10 |
pA |
||
|
ILEAKAGE |
Output Leakage Current |
VCE = 0V, RLOAD = 0Ω |
0.5 |
μA |
||
|
TON_RISE |
Output Turn-On Rise Time |
10% to 90% of VOUT rising |
1.5 |
ms |
||
|
Current Limit Factor |
ILIM × RSET |
270k |
A·Ω |
|||
|
ILIMSET |
Max. Current Limit Setting |
VIN=3.3V to 5.5V, RSET=75kΩ |
3.5 |
A |
||
|
ΔILIMSET |
Current Limit Setting Accuracy |
ILIMSET = 0.5A to 3A |
-20 |
+20 |
% |
|
|
RFLG |
FLAG Output Resistance |
ISINK = 1mA |
15 |
400 |
Ω |
|
|
IFLG_OFF |
FLAG Off Current |
VFLG = 5V |
10 |
nA |
||
|
tD |
FLAG Delay Time |
Form fault condition to FLAG |
2 |
4.6 |
8 |
ms |
|
VUVLO |
Under-Voltage Lockout |
VIN increasing |
1.3 |
1.7 |
V |
|
|
ΔVUVLO |
Under-Voltage Hysteresis |
VIN decreasing |
0.1 |
V |
||
|
TSD |
Thermal Shutdown Protection |
120 |
℃ |
|||
|
ΔTSD |
Thermal Shutdown Hysteresis |
30 |
℃ |
八,相关产品
|
产品名称 |
通道 |
工作电压(V) |
-3dB带宽(MHz) |
导通内阻(mΩ) |
最大电流(mA) |
封装形式 |
|
1 |
2.0-5.5 |
----- |
70 |
3500 |
SOT-23-5,SOP-8 |
|
|
1 |
2.2-6.0 |
----- |
100 |
1100 |
SOT-23-5 |
|
|
4 |
1.8-4.2 |
70 |
500 |
200 |
QFNWB3*3-16 |
|
|
2 |
1.8-5.5 |
30 |
500 |
300 |
MSOP-10 |
