CXSD6297

CXSD6297内置的软启动电路可防止输出电压过冲,并限制输入电流。为了满足低输出电压应用的要求,设计了一种高精度的0.8V温度补偿参考电压CXSD6297针对负载电流变化提供了出色的输出电压调节。CXSD6297内置了参考电压偏移功能,用于需要调整电源电压的应用。

CXSD6297电压模式固定300kHz开关频率同步降压变换器上电复位(POR)电路监测VCC电源电压以防止错误的逻辑控制

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产品简介

目录beU嘉泰姆

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

一,产品概述(General Description)     beU嘉泰姆


  The CXSD6297 is a voltage mode, fixed 300kHz switching frequency, synchronous buck converter. The CXSD6297 allows wide input voltage that is either a single 5V~12V or two supply voltage(s) for various applications. The power-on-reset (POR) circuit monitors the VCC supply voltage to prevent wrong logic controls. A built-in soft-start circuit prevents the output voltages from overshoot as well as limits the input current. An internal 0.8V tempera-ture-compensated reference voltage with high accuracy is designed to meet the requirement of low output volt-age applications. The CXSD6297 provides excellent out-put voltage regulations against load current variation.CXSD6297 is built in reference voltage offset function for applications that require adjusting supply voltage.The controller’s over-current protection monitors the out-put current by using the voltage drop across the RDS(ON) of low-side MOSFET, eliminating the need for a current sens-ing resistor that features high efficiency and low cost. In addition, the CXSD6297 also integrates excellent protec-tion functions, The over-voltage protection (OVP) , under-voltage protection (UVP) and over-temperature protec-tion (OTP). OVP circuit which monitors the FB voltage to prevent the PWM output from over voltage, and UVP cir-cuit which monitors the FB voltage to prevent the PWM output from under voltage or short circuit. OTP circuit whichbeU嘉泰姆
monitors the junction temperature to prevent over-heat-ing conditions.beU嘉泰姆
  The CXSD6297 is available in TDFN3x3-10 packagebeU嘉泰姆
二.产品特点(Features)beU嘉泰姆


1.)Wide 5V to 12V Supply VoltagebeU嘉泰姆
2.)Power-On-Reset Monitoring on VCCbeU嘉泰姆
3.)Excellent Output Voltage RegulationsbeU嘉泰姆
     - 0.8V Internal ReferencebeU嘉泰姆
     - ±1% Over Temperature Range beU嘉泰姆
4.)Integrated Soft-StartbeU嘉泰姆
5.)Voltage Mode PWM Operation with External CompensationbeU嘉泰姆
6.)Up to 90% Duty Ratio for Fast Transient ResponsebeU嘉泰姆
7.)Constant Switching FrequencybeU嘉泰姆
    - 300kHz ±10%beU嘉泰姆
8.)Integrated Bootstrap Forward P-CH MOSFETbeU嘉泰姆
9.)Drive Dual Low Cost N-MOSFETs with Adaptive Dead Time ControlbeU嘉泰姆
10.)50% Under-Voltage ProtectionbeU嘉泰姆
11.)125% Over-Voltage ProtectionbeU嘉泰姆
12.)Adjustable Over-Current Protection ThresholdbeU嘉泰姆
    - Using the RDS(ON) of Low-Side MOSFETbeU嘉泰姆
13.)Shutdown Control by COMPbeU嘉泰姆
14.)Power Good MonitoringbeU嘉泰姆
15.)TDFN3x3-10 PackagebeU嘉泰姆
16.)Lead Free and Green Devices Available (RoHS Compliant)beU嘉泰姆
三,应用范围 (Applications)beU嘉泰姆


Graphic CardsbeU嘉泰姆
DSL, Switch HUBbeU嘉泰姆
Wireless LanbeU嘉泰姆
Notebook ComputerbeU嘉泰姆
Mother BoardbeU嘉泰姆
LCD Monitor/TVbeU嘉泰姆
四.下载产品资料PDF文档 beU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beU嘉泰姆

 QQ截图20160419174301.jpgbeU嘉泰姆

 beU嘉泰姆

五,产品封装图 (Package)beU嘉泰姆


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六.电路原理图beU嘉泰姆


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七,功能概述beU嘉泰姆


Layout ConsiderationbeU嘉泰姆
In any high switching frequency converter, a correct lay-out is important to ensure proper operation of thebeU嘉泰姆
regulator. With power devices switching at 300kHz,the resulting current transient will cause voltage spike acrossbeU嘉泰姆
the interconnecting impedance and parasitic circuit elements. As an example, consider the turn-off transitionbeU嘉泰姆
of the PWM MOSFET. Before turn-off, the MOSFET is car-rying the full load current. During turn-off, current stopsbeU嘉泰姆
flowing in the MOSFET and is free-wheeling by the lower MOSFET and parasitic diode. Any parasitic inductance ofbeU嘉泰姆
the circuit generates a large voltage spike during the switching interval. In general, using short and wide printedbeU嘉泰姆
circuit traces should minimize interconnecting impedbeU嘉泰姆
Layout Consideration (Cont.)beU嘉泰姆
ances and the magnitude of voltage spike. And signal and power grounds are to be kept separate till combinedbeU嘉泰姆
using ground plane construction or single point grounding. Figure 8. illustrates the layout, with bold linesbeU嘉泰姆
indicating high current paths; these traces must be short and wide. Components along the bold lines should bebeU嘉泰姆
placed lose together. Below is a checklist for your layout:beU嘉泰姆
- Keep the switching nodes (UGATE, LGATE, and PHASE) away from sensitive small signal nodes since thesebeU嘉泰姆
nodes are fast moving signals. Therefore, keep traces to these nodes as short as possible.beU嘉泰姆
 The traces from the gate drivers to the MOSFETs (UG and LG) should be short and wide.beU嘉泰姆
- Place the source of the high-side MOSFET and the drain of the low-side MOSFET as close as possible. Minimiz-beU嘉泰姆
ing the impedance with wide layout plane between the two pads reduces the voltage bounce of the node.beU嘉泰姆
 Decoupling capacitor, compensation component, the resistor dividers, and boot capacitors should be closebeU嘉泰姆
their pins. (For example, place the decoupling ceramic capacitor near the drain of the high-side MOSFET asbeU嘉泰姆
close as possible. The bulk capacitors are also placed near the drain).beU嘉泰姆
- The input capacitor should be near the drain of the up-per MOSFET; the output capacitor should be near thebeU嘉泰姆
loads. The input capacitor GND should be close to the output capacitor GND and the lower MOSFET GND.beU嘉泰姆
- The drain of the MOSFETs (VIN and PHASE nodes) should be a large plane for heat sinking.beU嘉泰姆
The ROCSET resistance should be placed near the IC as close as possible.beU嘉泰姆

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


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8000beU嘉泰姆

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0.8beU嘉泰姆

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1beU嘉泰姆

60beU嘉泰姆

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0.6beU嘉泰姆

12beU嘉泰姆

5000beU嘉泰姆

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SOP-8beU嘉泰姆

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1beU嘉泰姆

1beU嘉泰姆

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13.2beU嘉泰姆

0.8beU嘉泰姆

5~12beU嘉泰姆

2100beU嘉泰姆

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1beU嘉泰姆

1beU嘉泰姆

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2.2beU嘉泰姆

13.2beU嘉泰姆

0.8beU嘉泰姆

5~12beU嘉泰姆

2100beU嘉泰姆

CXSD6277/A/BbeU嘉泰姆

SOP8|TSSOP8beU嘉泰姆

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1beU嘉泰姆

1beU嘉泰姆

5beU嘉泰姆

5beU嘉泰姆

13.2beU嘉泰姆

1.25|0.8beU嘉泰姆

5~12beU嘉泰姆

3000beU嘉泰姆

CXSD6278beU嘉泰姆

SOP-8beU嘉泰姆

VMbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

10beU嘉泰姆

3.3beU嘉泰姆

5.5beU嘉泰姆

0.8beU嘉泰姆

5beU嘉泰姆

2100beU嘉泰姆

CXSD6279BbeU嘉泰姆

SOP-14beU嘉泰姆

VM   beU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

10beU嘉泰姆

5beU嘉泰姆

13.2beU嘉泰姆

0.8beU嘉泰姆

12beU嘉泰姆

2000beU嘉泰姆

CXSD6280beU嘉泰姆

TSSOP-24beU嘉泰姆

|QFN5x5-32beU嘉泰姆

VMbeU嘉泰姆

1beU嘉泰姆

2beU嘉泰姆

20beU嘉泰姆

5beU嘉泰姆

13.2beU嘉泰姆

0.6beU嘉泰姆

5~12beU嘉泰姆

4000beU嘉泰姆

CXSD6281NbeU嘉泰姆

SOP14beU嘉泰姆

QSOP16beU嘉泰姆

QFN-16beU嘉泰姆

VMbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

30beU嘉泰姆

2.9beU嘉泰姆

13.2beU嘉泰姆

0.9beU嘉泰姆

12beU嘉泰姆

4000beU嘉泰姆

CXSD6282beU嘉泰姆

SOP-14beU嘉泰姆

VMbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

30beU嘉泰姆

2.2beU嘉泰姆

13.2beU嘉泰姆

0.6beU嘉泰姆

12beU嘉泰姆

5000beU嘉泰姆

CXSD6282AbeU嘉泰姆

SOP-14beU嘉泰姆

VMbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

30beU嘉泰姆

2.2beU嘉泰姆

13.2beU嘉泰姆

0.6beU嘉泰姆

12beU嘉泰姆

5000beU嘉泰姆

CXSD6283beU嘉泰姆

SOP-14beU嘉泰姆

VMbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

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2.2beU嘉泰姆

13.2beU嘉泰姆

0.8beU嘉泰姆

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CXSD6284/AbeU嘉泰姆

LQFP7x7 48beU嘉泰姆

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1beU嘉泰姆

6beU嘉泰姆

0.015beU嘉泰姆

1.4beU嘉泰姆

6.5beU嘉泰姆

-beU嘉泰姆

5beU嘉泰姆

1800beU嘉泰姆

CXSD6285beU嘉泰姆

TSSOP-24PbeU嘉泰姆

VMbeU嘉泰姆

1beU嘉泰姆

2beU嘉泰姆

20beU嘉泰姆

2.97beU嘉泰姆

5.5beU嘉泰姆

0.8beU嘉泰姆

5~12beU嘉泰姆

5000beU嘉泰姆

CXSD6286beU嘉泰姆

SOP-14beU嘉泰姆

VMbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

10beU嘉泰姆

5beU嘉泰姆

13.2beU嘉泰姆

0.8beU嘉泰姆

12beU嘉泰姆

3000beU嘉泰姆

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SOP-8-P|DIP-8beU嘉泰姆

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1beU嘉泰姆

1beU嘉泰姆

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2.9beU嘉泰姆

13.2beU嘉泰姆

1.2beU嘉泰姆

12beU嘉泰姆

3000beU嘉泰姆

CXSD6288beU嘉泰姆

SSOP28beU嘉泰姆

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5beU嘉泰姆

24beU嘉泰姆

0.9beU嘉泰姆

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1200beU嘉泰姆

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SOP-20beU嘉泰姆

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CXSD6290beU嘉泰姆

SOP8|DFN3x3-10beU嘉泰姆

VMbeU嘉泰姆

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2beU嘉泰姆

-beU嘉泰姆

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5~12beU嘉泰姆

550beU嘉泰姆

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9 ~ 24beU嘉泰姆

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3beU嘉泰姆

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1700beU嘉泰姆

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0.8beU嘉泰姆

5~12beU嘉泰姆

2500beU嘉泰姆

CXSD6296A|B|C|DbeU嘉泰姆

SOP8PbeU嘉泰姆

VMbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

25beU嘉泰姆

3beU嘉泰姆

13.2beU嘉泰姆

0.6|0.8beU嘉泰姆

5~12beU嘉泰姆

1200beU嘉泰姆

CXSD6297beU嘉泰姆

TDFN3x3-10beU嘉泰姆

VMbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

25beU嘉泰姆

4beU嘉泰姆

13.2beU嘉泰姆

0.8beU嘉泰姆

5~12beU嘉泰姆

2000beU嘉泰姆

CXSD6298beU嘉泰姆

TDFN3x3-10beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

25beU嘉泰姆

4.5beU嘉泰姆

25beU嘉泰姆

0.6beU嘉泰姆

5~12beU嘉泰姆

80beU嘉泰姆

CXSD6299|AbeU嘉泰姆

SOP-8PbeU嘉泰姆

VMbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

25beU嘉泰姆

4.5beU嘉泰姆

13.2beU嘉泰姆

0.8beU嘉泰姆

5~12beU嘉泰姆

16000beU嘉泰姆

CXSD62100beU嘉泰姆

TQFN3x3-10beU嘉泰姆

VMbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

25beU嘉泰姆

4.5beU嘉泰姆

13.2beU嘉泰姆

0.6beU嘉泰姆

5~12beU嘉泰姆

2500beU嘉泰姆

CXSD62101|LbeU嘉泰姆

TDFN3x3-10beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

30beU嘉泰姆

3beU嘉泰姆

25beU嘉泰姆

0.8beU嘉泰姆

5~12beU嘉泰姆

2000beU嘉泰姆

CXSD62102beU嘉泰姆

TQFN3x3-16beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

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1.8beU嘉泰姆

28beU嘉泰姆

0.6beU嘉泰姆

5beU嘉泰姆

600beU嘉泰姆

CXSD62102AbeU嘉泰姆

TQFN 3x3 16beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

30beU嘉泰姆

1.8beU嘉泰姆

28beU嘉泰姆

0.6beU嘉泰姆

5beU嘉泰姆

600beU嘉泰姆

CXSD62103beU嘉泰姆

QFN4x4-24beU嘉泰姆

VMbeU嘉泰姆

2beU嘉泰姆

1beU嘉泰姆

50beU嘉泰姆

4.5beU嘉泰姆

13.2beU嘉泰姆

0.6beU嘉泰姆

5~12beU嘉泰姆

5000beU嘉泰姆

CXSD62104beU嘉泰姆

TQFN4x4-24beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

2beU嘉泰姆

15beU嘉泰姆

6beU嘉泰姆

25beU嘉泰姆

2beU嘉泰姆

NbeU嘉泰姆

550beU嘉泰姆

CXSD62105beU嘉泰姆

TQFN4x4-24beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

2beU嘉泰姆

15beU嘉泰姆

6beU嘉泰姆

25beU嘉泰姆

2beU嘉泰姆

NbeU嘉泰姆

550beU嘉泰姆

CXSD62106|AbeU嘉泰姆

TQFN4x4-4beU嘉泰姆

TQFN3x3-20beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

2beU嘉泰姆

20beU嘉泰姆

3beU嘉泰姆

28beU嘉泰姆

0.75beU嘉泰姆

5beU嘉泰姆

800beU嘉泰姆

CXSD62107beU嘉泰姆

TQFN3x3-16beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

20beU嘉泰姆

1.8beU嘉泰姆

28beU嘉泰姆

0.75beU嘉泰姆

5beU嘉泰姆

400beU嘉泰姆

CXSD62108beU嘉泰姆

QFN3.5x3.5-14beU嘉泰姆

TQFN3x3-16beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

20beU嘉泰姆

1.8beU嘉泰姆

28beU嘉泰姆

0.75beU嘉泰姆

5beU嘉泰姆

400beU嘉泰姆

CXSD62109beU嘉泰姆

TQFN3x3-16beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

2beU嘉泰姆

20beU嘉泰姆

1.8beU嘉泰姆

28beU嘉泰姆

0.75beU嘉泰姆

5beU嘉泰姆

400beU嘉泰姆

CXSD62110beU嘉泰姆

QFN3x3-20beU嘉泰姆

TQFN3x3-16beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

2beU嘉泰姆

20beU嘉泰姆

3beU嘉泰姆

28beU嘉泰姆

1.8|1.5|0.5beU嘉泰姆

5beU嘉泰姆

740beU嘉泰姆

CXSD62111beU嘉泰姆

TQFN4x4-24beU嘉泰姆

|QFN3x3-20beU嘉泰姆

CMbeU嘉泰姆

1beU嘉泰姆

2beU嘉泰姆

15beU嘉泰姆

5beU嘉泰姆

28beU嘉泰姆

0.5beU嘉泰姆

NbeU嘉泰姆

3000beU嘉泰姆

CXSD62112beU嘉泰姆

TDFN3x3-10beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

20beU嘉泰姆

1.8beU嘉泰姆

28beU嘉泰姆

0.5beU嘉泰姆

5beU嘉泰姆

250beU嘉泰姆

CXSD62113|CbeU嘉泰姆

TQFN3x3-20beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

2beU嘉泰姆

15beU嘉泰姆

6beU嘉泰姆

25beU嘉泰姆

2beU嘉泰姆

NbeU嘉泰姆

550beU嘉泰姆

CXSD62113EbeU嘉泰姆

TQFN 3x3 20beU嘉泰姆

COTbeU嘉泰姆

2beU嘉泰姆

2beU嘉泰姆

11beU嘉泰姆

6beU嘉泰姆

25beU嘉泰姆

2beU嘉泰姆

NbeU嘉泰姆

550beU嘉泰姆

CXSD62114beU嘉泰姆

TQFN3x3-20beU嘉泰姆

COTbeU嘉泰姆

2beU嘉泰姆

2beU嘉泰姆

11beU嘉泰姆

5.5beU嘉泰姆

25beU嘉泰姆

2beU嘉泰姆

NbeU嘉泰姆

280beU嘉泰姆

CXSD62115beU嘉泰姆

QFN4x4-24beU嘉泰姆

VMbeU嘉泰姆

2beU嘉泰姆

1beU嘉泰姆

60beU嘉泰姆

3.1beU嘉泰姆

13.2beU嘉泰姆

0.85beU嘉泰姆

12beU嘉泰姆

5000beU嘉泰姆

CXSD62116A|B|CbeU嘉泰姆

SOP-8PbeU嘉泰姆

VMbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

20beU嘉泰姆

2.9beU嘉泰姆

13.2beU嘉泰姆

0.8beU嘉泰姆

12beU嘉泰姆

16000beU嘉泰姆

CXSD62117beU嘉泰姆

SOP-20beU嘉泰姆

VMbeU嘉泰姆

2beU嘉泰姆

2beU嘉泰姆

30beU嘉泰姆

10beU嘉泰姆

13.2beU嘉泰姆

1beU嘉泰姆

12beU嘉泰姆

5000beU嘉泰姆

CXSD62118beU嘉泰姆

TDFN3x3-10beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

1beU嘉泰姆

25beU嘉泰姆

1.8beU嘉泰姆

28beU嘉泰姆

0.7beU嘉泰姆

5beU嘉泰姆

250beU嘉泰姆

CXSD62119beU嘉泰姆

TQFN3x3-20beU嘉泰姆

COTbeU嘉泰姆

2beU嘉泰姆

1beU嘉泰姆

40beU嘉泰姆

1.8beU嘉泰姆

25beU嘉泰姆

REFIN SettingbeU嘉泰姆

5beU嘉泰姆

700beU嘉泰姆

CXSD62120beU嘉泰姆

QFN 3x3 20beU嘉泰姆

TQFN 3x3 16beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

2beU嘉泰姆

20beU嘉泰姆

3beU嘉泰姆

28beU嘉泰姆

1.8|1.5 1.35|1.2 0.5beU嘉泰姆

5beU嘉泰姆

800beU嘉泰姆

CXSD62121AbeU嘉泰姆

TQFN3x3 20beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

2beU嘉泰姆

15beU嘉泰姆

3beU嘉泰姆

28beU嘉泰姆

0.75beU嘉泰姆

5beU嘉泰姆

220beU嘉泰姆

CXSD62121BbeU嘉泰姆

TQFN3x3 20beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

2beU嘉泰姆

15beU嘉泰姆

3beU嘉泰姆

28beU嘉泰姆

0.75beU嘉泰姆

5beU嘉泰姆

220beU嘉泰姆

CXSD62121beU嘉泰姆

TQFN3x3-20beU嘉泰姆

COTbeU嘉泰姆

1beU嘉泰姆

2beU嘉泰姆

20beU嘉泰姆

3beU嘉泰姆

28beU嘉泰姆

0.75beU嘉泰姆

5beU嘉泰姆

180beU嘉泰姆

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