目录Qwx嘉泰姆

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

一,产品概述(General Description)         Qwx嘉泰姆
        The CXSD62116A/B/C is a voltage mode, fixed 300kHz-switching frequency,Qwx嘉泰姆
and synchronous buck controller. The CXSD62116A/B/C allows wide input voltageQwx嘉泰姆
that is either a single 5~12V or two supply voltage(s) for various applications.Qwx嘉泰姆
A power-on-reset (POR) circuit monitors the VCC supply voltage to preventQwx嘉泰姆
wrong logic controls. A built-in digital soft-start circuit prevents the outputQwx嘉泰姆
voltages from overshoot as well as limits the input current. An internalQwx嘉泰姆
0.6V temperature-compensated reference voltage with high accuracy isQwx嘉泰姆
designed to meet the requirement of low output voltage applications.Qwx嘉泰姆
The CXSD62116A/B/C provides excellent output voltage regulations againstQwx嘉泰姆
load current variation.Qwx嘉泰姆
     The controller’s over-current protection monitors the output currentQwx嘉泰姆
by using the voltage drops across the RDS(ON)of low-side MOSFET,Qwx嘉泰姆
eliminating the need for a current sensing resistor that features highQwx嘉泰姆
efficiency and low cost.Qwx嘉泰姆
     The CXSD62116A/B/C also integrates over-voltage protection (OVP) andQwx嘉泰姆
under-voltage protection circuit which moni-tors the FB voltage to preventQwx嘉泰姆
the PWM output from over and under voltage.Qwx嘉泰姆
     The CXSD62116A/B/C is available in a simple SOP-8P package.Qwx嘉泰姆
二.产品特点(Features)Qwx嘉泰姆
Wide Operation Supply Voltage from 5V to 12VQwx嘉泰姆
Power-On-Reset Monitoring on VCC Qwx嘉泰姆
Excellent Reference Voltage RegulationsQwx嘉泰姆
- 0.6V Internal ReferenceQwx嘉泰姆
- ±1% Over Temperature RangeQwx嘉泰姆
Integrated Soft-StartQwx嘉泰姆
Automatic PSM/PWM ModesQwx嘉泰姆
Voltage Mode PWM Operation with 90% (Max.) Duty CycleQwx嘉泰姆
Under-Voltage ProtectionQwx嘉泰姆
Adjustable Over-Current Protection ThresholdQwx嘉泰姆
- Sensing the RDS(ON) of Low-Side MOSFETQwx嘉泰姆
Over-Voltage ProtectionQwx嘉泰姆
Under-Voltage ProtectionQwx嘉泰姆
Simple SOP-8P PackageQwx嘉泰姆
Lead Free and Green Devices AvailableQwx嘉泰姆
(RoHS Compliant)Qwx嘉泰姆
三,应用范围 (Applications)Qwx嘉泰姆
Graphic CardsQwx嘉泰姆
DSL, Switch HUBQwx嘉泰姆
Wireless LanQwx嘉泰姆
Notebook ComputerQwx嘉泰姆
Mother BoardQwx嘉泰姆
LCD Monitor/TVQwx嘉泰姆

四.下载产品资料PDF文档 Qwx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！Qwx嘉泰姆

 Qwx嘉泰姆

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

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

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

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

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

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

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

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

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

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

Switching Regulator >   Buck ControllerQwx嘉泰姆

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tectuQwx嘉泰姆

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1   Qwx嘉泰姆

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30Qwx嘉泰姆

2.9    Qwx嘉泰姆

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1Qwx嘉泰姆

20Qwx嘉泰姆

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0.8Qwx嘉泰姆

12Qwx嘉泰姆

5000Qwx嘉泰姆

CXSD6274CQwx嘉泰姆

SOP-8Qwx嘉泰姆

VMQwx嘉泰姆

1Qwx嘉泰姆

1Qwx嘉泰姆

20Qwx嘉泰姆

2.9Qwx嘉泰姆

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0.8Qwx嘉泰姆

12Qwx嘉泰姆

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VMQwx嘉泰姆

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60Qwx嘉泰姆

3.1Qwx嘉泰姆

13.2Qwx嘉泰姆

0.6Qwx嘉泰姆

12Qwx嘉泰姆

5000Qwx嘉泰姆

CXSD6276Qwx嘉泰姆

SOP-8Qwx嘉泰姆

VMQwx嘉泰姆

1Qwx嘉泰姆

1Qwx嘉泰姆

20Qwx嘉泰姆

2.2Qwx嘉泰姆

13.2Qwx嘉泰姆

0.8Qwx嘉泰姆

5~12Qwx嘉泰姆

2100Qwx嘉泰姆

CXSD6276AQwx嘉泰姆

SOP-8Qwx嘉泰姆

VMQwx嘉泰姆

1Qwx嘉泰姆

1Qwx嘉泰姆

20Qwx嘉泰姆

2.2Qwx嘉泰姆

13.2Qwx嘉泰姆

0.8Qwx嘉泰姆

5~12Qwx嘉泰姆

2100Qwx嘉泰姆

CXSD6277/A/BQwx嘉泰姆

SOP8|TSSOP8Qwx嘉泰姆

VMQwx嘉泰姆

1Qwx嘉泰姆

1Qwx嘉泰姆

5Qwx嘉泰姆

5Qwx嘉泰姆

13.2Qwx嘉泰姆

1.25|0.8Qwx嘉泰姆

5~12Qwx嘉泰姆

3000Qwx嘉泰姆

CXSD6278Qwx嘉泰姆

SOP-8Qwx嘉泰姆

VMQwx嘉泰姆

1Qwx嘉泰姆

1Qwx嘉泰姆

10Qwx嘉泰姆

3.3Qwx嘉泰姆

5.5Qwx嘉泰姆

0.8Qwx嘉泰姆

5Qwx嘉泰姆

2100Qwx嘉泰姆

CXSD6279BQwx嘉泰姆

SOP-14Qwx嘉泰姆

VM   Qwx嘉泰姆

1Qwx嘉泰姆

1Qwx嘉泰姆

10Qwx嘉泰姆

5Qwx嘉泰姆

13.2Qwx嘉泰姆

0.8Qwx嘉泰姆

12Qwx嘉泰姆

2000Qwx嘉泰姆

CXSD6280Qwx嘉泰姆

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1Qwx嘉泰姆

2Qwx嘉泰姆

20Qwx嘉泰姆

5Qwx嘉泰姆

13.2Qwx嘉泰姆

0.6Qwx嘉泰姆

5~12Qwx嘉泰姆

4000Qwx嘉泰姆

CXSD6281NQwx嘉泰姆

SOP14Qwx嘉泰姆

QSOP16Qwx嘉泰姆

QFN-16Qwx嘉泰姆

VMQwx嘉泰姆

1Qwx嘉泰姆

1Qwx嘉泰姆

30Qwx嘉泰姆

2.9Qwx嘉泰姆

13.2Qwx嘉泰姆

0.9Qwx嘉泰姆

12Qwx嘉泰姆

4000Qwx嘉泰姆

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1Qwx嘉泰姆

1Qwx嘉泰姆

30Qwx嘉泰姆

2.2Qwx嘉泰姆

13.2Qwx嘉泰姆

0.6Qwx嘉泰姆

12Qwx嘉泰姆

5000Qwx嘉泰姆

CXSD6282AQwx嘉泰姆

SOP-14Qwx嘉泰姆

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1Qwx嘉泰姆

1Qwx嘉泰姆

30Qwx嘉泰姆

2.2Qwx嘉泰姆

13.2Qwx嘉泰姆

0.6Qwx嘉泰姆

12Qwx嘉泰姆

5000Qwx嘉泰姆

CXSD6283Qwx嘉泰姆

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1Qwx嘉泰姆

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13.2Qwx嘉泰姆

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1Qwx嘉泰姆

6Qwx嘉泰姆

0.015Qwx嘉泰姆

1.4Qwx嘉泰姆

6.5Qwx嘉泰姆

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5Qwx嘉泰姆

1800Qwx嘉泰姆

CXSD6285Qwx嘉泰姆

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VMQwx嘉泰姆

1Qwx嘉泰姆

2Qwx嘉泰姆

20Qwx嘉泰姆

2.97Qwx嘉泰姆

5.5Qwx嘉泰姆

0.8Qwx嘉泰姆

5~12Qwx嘉泰姆

5000Qwx嘉泰姆

CXSD6286Qwx嘉泰姆

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1Qwx嘉泰姆

1Qwx嘉泰姆

10Qwx嘉泰姆

5Qwx嘉泰姆

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12Qwx嘉泰姆

3000Qwx嘉泰姆

CXSD6287Qwx嘉泰姆

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1Qwx嘉泰姆

1Qwx嘉泰姆

30Qwx嘉泰姆

2.9Qwx嘉泰姆

13.2Qwx嘉泰姆

1.2Qwx嘉泰姆

12Qwx嘉泰姆

3000Qwx嘉泰姆

CXSD6288Qwx嘉泰姆

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QFN4x4-24Qwx嘉泰姆

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1Qwx嘉泰姆

2Qwx嘉泰姆

20Qwx嘉泰姆

5Qwx嘉泰姆

24Qwx嘉泰姆

0.9Qwx嘉泰姆

5Qwx嘉泰姆

1200Qwx嘉泰姆

CXSD6289Qwx嘉泰姆

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1Qwx嘉泰姆

2Qwx嘉泰姆

20Qwx嘉泰姆

2.2Qwx嘉泰姆

13.2Qwx嘉泰姆

0.6Qwx嘉泰姆

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4000Qwx嘉泰姆

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