CXSD62366是一个8A同步DC/DC降压转换器，集成了20mΩN沟道高侧MOSFET和20mΩN沟道低侧MOSFET。它使用恒定的实时控制方案来轻松处理宽的输入/输出电压比，并在保持相对恒定的开关频率的同时，提供对负载瞬变的100ns“瞬时通电”响应。
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产品概述 返回TOP
产品特点 返回TOP
„ Ultra-High Efficiency
„ Integrated 20mΩ at Vcc=5V N-Channel MOSFET for Low Side
„ Integrated 20mΩ at Vcc=5V N-Channel MOSFET for High Side
„ No Current-Sense Resistor (Lossless ILIMIT)
„ Quasi-PWM with 100ns Load-Step Response
„ 1% VOUT Accuracy Over Line and Load
„ Programmable Switching Frequency
„ Adjustable Output Range from 0.75V
„ 4.5V to 28V Adapter or Battery Input Range
„ Integrated Boost Switch
„ OVP & UVP
„ Over Temperature Protection (non-latch)
„ 3.3ms Soft-Start
„ Power-Good Indicator
„ Fixed 5V, 20mA Linear Regulator
应用范围 返回TOP
„ LCD Monitor/LCD TV
„ Notebook Computers
„ I/O Supply
„ Chipset/RAM Supply as Low as 0.75V
„ Networking Power Supply
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电路原理图 返回TOP
|
Point Of Load(Synchronous Quasi-PWM Step Down Converter) |
|||||||||
|
Part NO. |
Vin(V) min. |
Vin(V) max. |
Ilimit (V) |
FSW (kHz) |
FB(V) |
HSRON (mohm) |
LSRON (mohm) |
Note |
Package |
|
4.5 |
28 |
10 |
ADJ |
0.75 |
20 |
8.5 |
With 5V Supply, EN, PGOOD |
QFN4X4-28 QFN5X5-32 |
|
|
4.5 |
28 |
10 |
ADJ |
0.75 |
20 |
8.5 |
EN, PGOOD, ILMIT set by R |
QFN4X4-28 |
|
|
4.5 |
28 |
8 |
ADJ |
0.75 |
20 |
20 |
With 5V Supply, EN, PGOOD |
QFN4X4-28 QFN5X5-32 |
|
|
4.5 |
28 |
6 |
ADJ |
0.75 |
20 |
20 |
EN, PGOOD, ILMIT set by R |
QFN4X4-28 |
|
|
4.5 |
28 |
8 |
ADJ |
0.9 |
30 |
15 |
With 5V Supply, EN, PGOOD, Low Iq |
QFN3X3-21 |
|
|
4.5 |
28 |
4 |
ADJ |
0.9 |
30 |
30 |
With 5V Supply, EN, PGOOD, Low Iq |
QFN3X3-21 |
|
|
4.5 |
28 |
10 |
ADJ |
0.8 |
20 |
8.5 |
EN, PGOOD, MLCC, Soft Start adjustable |
QFN4X4-23 2 Thermal Pads |
|
|
5.5 |
28 |
8 |
ADJ |
5.05 |
20 |
17 |
5V System Power Rail,LDO5 Switchover5V,ON5, ENL,PGOOD,Low Iq,MLCC,Ultrasonic with VCLK |
QFN4X4-28 2 Thermal Pads |
|
|
5.5 |
28 |
10 |
ADJ |
5.05 |
20 |
8.5 |
5V System Power Rail, LDO5 Switchover5V, ON5 ENL,PGOOD,Low Iq,MLCC,Ultrasonic with VCLK |
QFN4X4-28, 2 Thermal Pads |
|
|
5.5 |
28 |
8 |
ADJ |
3.33 |
20 |
17 |
3V System Power Rail, LDO3 Switchover3V, ON3, ENL,PGOOD,Low Iq,MLCC,Ultrasonic with VCLK |
QFN4X4-28 2 Thermal Pads |
|
|
3 |
28 |
8 |
ADJ |
0.75 |
30 |
15 |
EN, PGOOD, Low Iq, MLCC |
QFN3X3-24 2 Thermal Pads |
|
|
5.5 |
28 |
8 |
ADJ |
0.9 |
30 |
15 |
With 5V Supply, EN, PGOOD, Low Iq, MLCC |
QFN3X3-24 2 Thermal Pads |
|
|
5.5 |
28 |
4 |
ADJ |
0.9 |
30 |
30 |
With 5V Supply, EN, PGOOD, Low Iq, MLCC |
QFN3X3-24 2 Thermal Pads |
|
|
3 |
28 |
10 |
ADJ |
0.75 |
20 |
8.5 |
EN, PGOOD, Low Iq, MLCC |
QFN4X4-28 2 Thermal Pads |
|
|
3 |
28 |
8 |
ADJ |
0.75 |
30 |
15 |
EN, PGOOD, Low Iq, MLCC |
QFN4X4-28 2 Thermal Pads |
|
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