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首页 > 产品中心 > 电源管理 > DC降压型芯片 > Buck降压型芯片 >CXSD62116A|B|C电压模式固定300kHz开关频率和同步降压控制器两个电源电压模式
CXSD62116A|B|C电压模式固定300kHz开关频率和同步降压控制器两个电源电压模式
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CXSD62116A|B|C允许宽输入电压它可以是一个5~12V的电源电压,也可以是两个不同应用的电源电压。上电复位(POR)电路监测VCC电源电压以防止逻辑控制错误。内置数字软启动电路防止输出电压过冲以及限制输入电流。内线0.6V高精度温度补偿参考电压设计满足低输出电压应用的要求

CXSD62116A|B|C电压模式固定300kHz开关频率和同步降压控制器两个电源电压模式
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目录dcU嘉泰姆

1.产品概述                       2.产品特点dcU嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 dcU嘉泰姆
5.产品封装图                     6.电路原理图                   dcU嘉泰姆
7.功能概述                        8.相关产品dcU嘉泰姆

一,产品概述(General Description)         dcU嘉泰姆
        The CXSD62116A/B/C is a voltage mode, fixed 300kHz-switching frequency,dcU嘉泰姆
and synchronous buck controller. The CXSD62116A/B/C allows wide input voltagedcU嘉泰姆
that is either a single 5~12V or two supply voltage(s) for various applications.dcU嘉泰姆
A power-on-reset (POR) circuit monitors the VCC supply voltage to preventdcU嘉泰姆
wrong logic controls. A built-in digital soft-start circuit prevents the outputdcU嘉泰姆
voltages from overshoot as well as limits the input current. An internaldcU嘉泰姆
0.6V temperature-compensated reference voltage with high accuracy isdcU嘉泰姆
designed to meet the requirement of low output voltage applications.dcU嘉泰姆
The CXSD62116A/B/C provides excellent output voltage regulations againstdcU嘉泰姆
load current variation.dcU嘉泰姆
     The controller’s over-current protection monitors the output currentdcU嘉泰姆
by using the voltage drops across the RDS(ON)of low-side MOSFET,dcU嘉泰姆
eliminating the need for a current sensing resistor that features highdcU嘉泰姆
efficiency and low cost.dcU嘉泰姆
     The CXSD62116A/B/C also integrates over-voltage protection (OVP) anddcU嘉泰姆
under-voltage protection circuit which moni-tors the FB voltage to preventdcU嘉泰姆
the PWM output from over and under voltage.dcU嘉泰姆
     The CXSD62116A/B/C is available in a simple SOP-8P package.dcU嘉泰姆
二.产品特点(Features)dcU嘉泰姆
Wide Operation Supply Voltage from 5V to 12VdcU嘉泰姆
Power-On-Reset Monitoring on VCC dcU嘉泰姆
Excellent Reference Voltage RegulationsdcU嘉泰姆
- 0.6V Internal ReferencedcU嘉泰姆
- ±1% Over Temperature RangedcU嘉泰姆
Integrated Soft-StartdcU嘉泰姆
Automatic PSM/PWM ModesdcU嘉泰姆
Voltage Mode PWM Operation with 90% (Max.) Duty CycledcU嘉泰姆
Under-Voltage ProtectiondcU嘉泰姆
Adjustable Over-Current Protection ThresholddcU嘉泰姆
- Sensing the RDS(ON) of Low-Side MOSFETdcU嘉泰姆
Over-Voltage ProtectiondcU嘉泰姆
Under-Voltage ProtectiondcU嘉泰姆
Simple SOP-8P PackagedcU嘉泰姆
Lead Free and Green Devices AvailabledcU嘉泰姆
(RoHS Compliant)dcU嘉泰姆
三,应用范围 (Applications)dcU嘉泰姆
Graphic CardsdcU嘉泰姆
DSL, Switch HUBdcU嘉泰姆
Wireless LandcU嘉泰姆
Notebook ComputerdcU嘉泰姆
Mother BoarddcU嘉泰姆
LCD Monitor/TVdcU嘉泰姆

四.下载产品资料PDF文档 dcU嘉泰姆

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dcU嘉泰姆

 QQ截图20160419174301.jpgdcU嘉泰姆

五,产品封装图 (Package)dcU嘉泰姆
dcU嘉泰姆
六.电路原理图dcU嘉泰姆

blob.pngdcU嘉泰姆
七,功能概述dcU嘉泰姆
Layout ConsiderationdcU嘉泰姆
In any high switching frequency converter, a correct lay-out is important to ensure proper operation of thedcU嘉泰姆
regulator. With power devices switching at 300kHz,the resulting current transient will cause voltage spike acrossdcU嘉泰姆
the interconnecting impedance and parasitic circuit elements. As an example, consider the turn-off transitiondcU嘉泰姆
of the PWM MOSFET. Before turn-off, the MOSFET is car rying the full load current. During turn-off, current stopsdcU嘉泰姆
flowing in the MOSFET and is free-wheeling by the lower MOSFET and parasitic diode. Any parasitic inductance ofdcU嘉泰姆
the circuit generates a large voltage spike during the switching interval. In general, using short and wide printeddcU嘉泰姆
circuit traces should minimize interconnecting imped-dcU嘉泰姆

Layout Consideration (Cont.)dcU嘉泰姆
ances and the magnitude of voltage spike. And signal and power grounds are to be kept separate till combineddcU嘉泰姆

using ground plane construction or single point grounding. Figure 8. illustrates the layout, with bold linesdcU嘉泰姆
indicating high current paths; these traces must be short and wide. Components along the bold lines should bedcU嘉泰姆

placed lose together. Below is a checklist for your layout:dcU嘉泰姆

- Keep the switching nodes (UGATE, LGATE, and PHASE) away from sensitive small signal nodes since thesedcU嘉泰姆

nodes are fast moving signals. Therefore, keep traces to these nodes as short as possible.dcU嘉泰姆

- The traces from the gate drivers to the MOSFETs (UG and LG) should be short and wide.dcU嘉泰姆

- Place the source of the high-side MOSFET and the drain of the low-side MOSFET as close as possible. Minimiz-dcU嘉泰姆
ing the impedance with wide layout plane between the two pads reduces the voltage bounce of the node.dcU嘉泰姆
- Decoupling capacitor, compensation component, the resistor dividers, and boot capacitors should be closedcU嘉泰姆
their pins. (For example, place the decoupling ceramic capacitor near the drain of the high-side MOSFET asdcU嘉泰姆
close as possible. The bulk capacitors are also placed near the drain).dcU嘉泰姆
- The input capacitor should be near the drain of the up-per MOSFET; the output capacitor should be near thedcU嘉泰姆
loads. The input capacitor GND should be close to the output capacitor GND and the lower MOSFET GND.dcU嘉泰姆
- The drain of the MOSFETs (VIN and PHASE nodes) should be a large plane for heat sinking.dcU嘉泰姆
- The ROCSET resistance should be placed near the IC as close as possible.Close to ICdcU嘉泰姆
Figure 8. Layout GuidelinesdcU嘉泰姆

八,相关产品                     更多同类产品...... dcU嘉泰姆

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600dcU嘉泰姆

CXSD62103dcU嘉泰姆

QFN4x4-24dcU嘉泰姆

VMdcU嘉泰姆

2dcU嘉泰姆

1dcU嘉泰姆

50dcU嘉泰姆

4.5dcU嘉泰姆

13.2dcU嘉泰姆

0.6dcU嘉泰姆

5~12dcU嘉泰姆

5000dcU嘉泰姆

CXSD62104dcU嘉泰姆

TQFN4x4-24dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

2dcU嘉泰姆

15dcU嘉泰姆

6dcU嘉泰姆

25dcU嘉泰姆

2dcU嘉泰姆

NdcU嘉泰姆

550dcU嘉泰姆

CXSD62105dcU嘉泰姆

TQFN4x4-24dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

2dcU嘉泰姆

15dcU嘉泰姆

6dcU嘉泰姆

25dcU嘉泰姆

2dcU嘉泰姆

NdcU嘉泰姆

550dcU嘉泰姆

CXSD62106|AdcU嘉泰姆

TQFN4x4-4dcU嘉泰姆

TQFN3x3-20dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

2dcU嘉泰姆

20dcU嘉泰姆

3dcU嘉泰姆

28dcU嘉泰姆

0.75dcU嘉泰姆

5dcU嘉泰姆

800dcU嘉泰姆

CXSD62107dcU嘉泰姆

TQFN3x3-16dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

1dcU嘉泰姆

20dcU嘉泰姆

1.8dcU嘉泰姆

28dcU嘉泰姆

0.75dcU嘉泰姆

5dcU嘉泰姆

400dcU嘉泰姆

CXSD62108dcU嘉泰姆

QFN3.5x3.5-14dcU嘉泰姆

TQFN3x3-16dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

1dcU嘉泰姆

20dcU嘉泰姆

1.8dcU嘉泰姆

28dcU嘉泰姆

0.75dcU嘉泰姆

5dcU嘉泰姆

400dcU嘉泰姆

CXSD62109dcU嘉泰姆

TQFN3x3-16dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

2dcU嘉泰姆

20dcU嘉泰姆

1.8dcU嘉泰姆

28dcU嘉泰姆

0.75dcU嘉泰姆

5dcU嘉泰姆

400dcU嘉泰姆

CXSD62110dcU嘉泰姆

QFN3x3-20dcU嘉泰姆

TQFN3x3-16dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

2dcU嘉泰姆

20dcU嘉泰姆

3dcU嘉泰姆

28dcU嘉泰姆

1.8|1.5|0.5dcU嘉泰姆

5dcU嘉泰姆

740dcU嘉泰姆

CXSD62111dcU嘉泰姆

TQFN4x4-24dcU嘉泰姆

|QFN3x3-20dcU嘉泰姆

CMdcU嘉泰姆

1dcU嘉泰姆

2dcU嘉泰姆

15dcU嘉泰姆

5dcU嘉泰姆

28dcU嘉泰姆

0.5dcU嘉泰姆

NdcU嘉泰姆

3000dcU嘉泰姆

CXSD62112dcU嘉泰姆

TDFN3x3-10dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

1dcU嘉泰姆

20dcU嘉泰姆

1.8dcU嘉泰姆

28dcU嘉泰姆

0.5dcU嘉泰姆

5dcU嘉泰姆

250dcU嘉泰姆

CXSD62113|CdcU嘉泰姆

TQFN3x3-20dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

2dcU嘉泰姆

15dcU嘉泰姆

6dcU嘉泰姆

25dcU嘉泰姆

2dcU嘉泰姆

NdcU嘉泰姆

550dcU嘉泰姆

CXSD62113EdcU嘉泰姆

TQFN 3x3 20dcU嘉泰姆

COTdcU嘉泰姆

2dcU嘉泰姆

2dcU嘉泰姆

11dcU嘉泰姆

6dcU嘉泰姆

25dcU嘉泰姆

2dcU嘉泰姆

NdcU嘉泰姆

550dcU嘉泰姆

CXSD62114dcU嘉泰姆

TQFN3x3-20dcU嘉泰姆

COTdcU嘉泰姆

2dcU嘉泰姆

2dcU嘉泰姆

11dcU嘉泰姆

5.5dcU嘉泰姆

25dcU嘉泰姆

2dcU嘉泰姆

NdcU嘉泰姆

280dcU嘉泰姆

CXSD62115dcU嘉泰姆

QFN4x4-24dcU嘉泰姆

VMdcU嘉泰姆

2dcU嘉泰姆

1dcU嘉泰姆

60dcU嘉泰姆

3.1dcU嘉泰姆

13.2dcU嘉泰姆

0.85dcU嘉泰姆

12dcU嘉泰姆

5000dcU嘉泰姆

CXSD62116A|B|CdcU嘉泰姆

SOP-8PdcU嘉泰姆

VMdcU嘉泰姆

1dcU嘉泰姆

1dcU嘉泰姆

20dcU嘉泰姆

2.9dcU嘉泰姆

13.2dcU嘉泰姆

0.8dcU嘉泰姆

12dcU嘉泰姆

16000dcU嘉泰姆

CXSD62117dcU嘉泰姆

SOP-20dcU嘉泰姆

VMdcU嘉泰姆

2dcU嘉泰姆

2dcU嘉泰姆

30dcU嘉泰姆

10dcU嘉泰姆

13.2dcU嘉泰姆

1dcU嘉泰姆

12dcU嘉泰姆

5000dcU嘉泰姆

CXSD62118dcU嘉泰姆

TDFN3x3-10dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

1dcU嘉泰姆

25dcU嘉泰姆

1.8dcU嘉泰姆

28dcU嘉泰姆

0.7dcU嘉泰姆

5dcU嘉泰姆

250dcU嘉泰姆

CXSD62119dcU嘉泰姆

TQFN3x3-20dcU嘉泰姆

COTdcU嘉泰姆

2dcU嘉泰姆

1dcU嘉泰姆

40dcU嘉泰姆

1.8dcU嘉泰姆

25dcU嘉泰姆

REFIN SettingdcU嘉泰姆

5dcU嘉泰姆

700dcU嘉泰姆

CXSD62120dcU嘉泰姆

QFN 3x3 20dcU嘉泰姆

TQFN 3x3 16dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

2dcU嘉泰姆

20dcU嘉泰姆

3dcU嘉泰姆

28dcU嘉泰姆

1.8|1.5 1.35|1.2 0.5dcU嘉泰姆

5dcU嘉泰姆

800dcU嘉泰姆

CXSD62121AdcU嘉泰姆

TQFN3x3 20dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

2dcU嘉泰姆

15dcU嘉泰姆

3dcU嘉泰姆

28dcU嘉泰姆

0.75dcU嘉泰姆

5dcU嘉泰姆

220dcU嘉泰姆

CXSD62121BdcU嘉泰姆

TQFN3x3 20dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

2dcU嘉泰姆

15dcU嘉泰姆

3dcU嘉泰姆

28dcU嘉泰姆

0.75dcU嘉泰姆

5dcU嘉泰姆

220dcU嘉泰姆

CXSD62121dcU嘉泰姆

TQFN3x3-20dcU嘉泰姆

COTdcU嘉泰姆

1dcU嘉泰姆

2dcU嘉泰姆

20dcU嘉泰姆

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28dcU嘉泰姆

0.75dcU嘉泰姆

5dcU嘉泰姆

180dcU嘉泰姆

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