CXSD62396是一个宽输入范围的固定频率的PWM控制器，带有集成MOSFET驱动器，用于单电源轨道同步单相buck变换器。CXSD62396采用带内部补偿和内部0.8V参考电压的电压模式控制来实现转换器设计。开关频率固定在400kHz，以减小外部无源元件的尺寸，使电路板紧凑
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产品概述 返回TOP
The CXSD62396 is a wide input range and fixed-frequency PWM controller with integrated MOSFET drivers for single power rail synchronous single-phase buck converter. CXSD62396 utilizes voltage-mode control with internal compensation and an internal 0.8V reference voltage to implement the converter design. The switching frequency is fixed at 400kHz to reduce the external passive component size and make the board compact. The CXSD62396provides under voltage protection, current limit, over current protection and over temperature protection. For the over current protection function, the low-side MOSFET RDS(ON) is used to sense the inductor current.
产品特点 返回TOP
„ 10V to 28V Wide Input Voltage Range
„ 0.8V Internal Reference
„ Fixed 400kHz Switching Frequency
„ Internal Soft Start function
„ High DC Gain
„ Voltage Mode PWM Controller
„ Fast Transient Response
„ 0 to 80% Duty Cycle
„ Over Current Protection
„ Under Voltage Protection
„ Over Temperature Protection
„ Compact Package TSOT-23-8
„ RoHS Compliant and Halogen Free
应用范围 返回TOP
„ Set-Top Box Power Supplies
„ PC Subsystem Power Supplies
„ Cable Modems, DSL Modems
„ DSP and Core Communication Processor Power Supplies
„ Memory Power Supplies
„ Personal Computer Peripherals
„ Industrial Power Supplies
„ Low Voltage Distributed Power Supplies
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产品封装图 返回TOP
电路原理图 返回TOP
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Synchronous Step Down Controller |
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|
Part NO. |
Vin(V) min |
Vin(V) max |
IOUT (A) |
FSW (kHz) |
FB (V) |
Duty max(%) |
VOUT (ms) |
Note |
Package |
|
2.5 |
5.5 |
-- |
300 |
1 |
100 |
15 |
EXT, VDD, GND, CE, FB, Voltage Mode |
SOT-23-5 |
|
|
5 |
12 |
OCSET |
300 |
0.8 |
-- |
14 |
BST, DH, GND, DL, VCC, FB, OC, LX |
SOP-8 |
|
|
-- |
24 |
OCSET |
300 |
0.8 |
-- |
8 |
BST, DH, GND, DL, VCC, FB, OC, LX |
SOP-8 |
|
|
10 |
28 |
-- |
400 |
0.8 |
80 |
3 |
VCC, DL, GND, DH, BST, LX, VIN, FB |
TSOT-23-8 |
|
|
5 |
23 |
OCSET |
400 |
0.8 |
80 |
8 |
DH, LX, DL, GND, FB, OC, VCC, BST |
SOP-8 |
|
|
4.5 |
27 |
RSENSE |
ADJ |
0.7 |
93 |
ADJ |
Asynchronous Voltage Mode Controller |
MSOP-10(FD) |
|
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