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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 >CXSD62106|A 同步buck-PWM控制器来产生VDDQ源极和陷极LDO线性调节器来产生VTT DDR2和DDR3内存提供完整的电源
CXSD62106|A 同步buck-PWM控制器来产生VDDQ源极和陷极LDO线性调节器来产生VTT DDR2和DDR3内存提供完整的电源
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CXSD62106|A集成了一个同步buck-PWM控制器来产生VDDQ,一种产生VTT的源极和陷极LDO线性调节器。它提供了DDR2和DDR3存储系统的完整电源。它提供最低的在空间处于溢价的系统中的解决方案总成本。CXSD62106/A提供出色的瞬态响应和准确的直流电PFM或PWM模式下的电压输出。在脉冲频率模式(PFM)中,CXSD62106/A通过加载调制开关频率在轻到重负载上提供非常高的效率

CXSD62106|A 同步buck-PWM控制器来产生VDDQ源极和陷极LDO线性调节器来产生VTT DDR2和DDR3内存提供完整的电源
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产品简介

目录A1c嘉泰姆

1.产品概述                       2.产品特点A1c嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 A1c嘉泰姆
5.产品封装图                     6.电路原理图                   A1c嘉泰姆
7.功能概述                        8.相关产品A1c嘉泰姆

一,产品概述(General Description)         A1c嘉泰姆
      The CXSD62106/A integrates a synchronous buck PWM controller to generateA1c嘉泰姆
VDDQ, a sourcing and sinking LDO linear regulator to generate VTT. It providesA1c嘉泰姆
a complete power supply for DDR2 and DDR3 memory system. It offers the lowestA1c嘉泰姆
total solution cost in system where space is at a premium.A1c嘉泰姆
      The CXSD62106/A provides excellent transient response  and accurate DC A1c嘉泰姆

voltage output in either PFM or PWM Mode. In Pulse Frequency Mode (PFM), the CXSD62106/A provides very high efficiency over light to heavy loads with loading-modulated switching frequencies. On TQFN4x4- 24A package, the Forced PWM A1c嘉泰姆

Mode works nearly at con-stant frequency for low-noise requirements.A1c嘉泰姆
The CXSD62106/A is equipped with accurate current-limit,output under-voltage,A1c嘉泰姆

and output over-voltage protections.A Power-On-Reset function monitors the A1c嘉泰姆

voltage on VCC prevents wrong operation during power on.The LDO is designed A1c嘉泰姆

to provide a regulated voltage with bi-directional output current for DDR-SDRAM termination.The device integrates two power transistors to source or sink current A1c嘉泰姆

up to 1.5A. It also incorporates current-limit and thermal shutdown protection.A1c嘉泰姆

The output voltage of LDO tracks the voltage at VTTREF pin. An internal resistorA1c嘉泰姆

divider is used to provide a half voltage of VDDQ for VTTREF and VTT Voltage. A1c嘉泰姆

The VTT output voltage is only requiring 20μF of ceramic output capacitance forA1c嘉泰姆

 stability and fast transient response. The S3 and S5 pins provide the sleep stateA1c嘉泰姆

 for VTT (S3 state)and suspend state (S4/S5 state) for device, when S5 andA1c嘉泰姆
S3 are both pulled low the device provides the soft-off for VTT and VTTREF.A1c嘉泰姆
The CXSD62106/A is available in 4mmx4mm 24-pin TQFN package, and the A1c嘉泰姆

CXSD62106A is available in 3mmx3mm 20-pin TQFN package.A1c嘉泰姆
二.产品特点(Features)A1c嘉泰姆
Buck Controller (VDDQ)A1c嘉泰姆
·  High Input Voltages Range from 3V to 28V Input PowerA1c嘉泰姆
Provide 1.8V (DDR2), 1.5V (DDR3) or AdjustableA1c嘉泰姆
Output Voltage from 0.75V to 5.5VA1c嘉泰姆
- ±1% Accuracy Over-TemperatureA1c嘉泰姆
Integrated MOSFET Drivers and Bootstrap DiodeA1c嘉泰姆
Excellent Line and Load Transient ResponsesA1c嘉泰姆
PFM Mode for Increased Light Load EfficiencyA1c嘉泰姆
Constant-On-Time Controller SchemeA1c嘉泰姆
- Switching Frequency Compensation for PWMModeA1c嘉泰姆
- Adjustable Switching Frequency from 100kHzA1c嘉泰姆
to 550kHz in PWM Mode with DC Output CurrentA1c嘉泰姆
Integrated MOSFET Drivers and Bootstrap DiodeA1c嘉泰姆
S3 and S5 Pins Control The Device in S0, S3, or S4/S5 StateA1c嘉泰姆
Power Good MonitoringA1c嘉泰姆
70% Under-Voltage Protection (UVP)A1c嘉泰姆
125% Over-Voltage Protection (OVP)A1c嘉泰姆
Adjustable Current-Limit ProtectionA1c嘉泰姆
Using Sense Low-Side MOSFET RDS(ON)A1c嘉泰姆
±1.5A LDO Section (VTT)A1c嘉泰姆
Souring or Sinking Current up to 1.5AA1c嘉泰姆
Fast Transient Response for Output VoltageA1c嘉泰姆
Output Ceramic Capacitors Support at Least 10μF MLCCA1c嘉泰姆
VTT and VTTREF Track at Half the VDDQSNS by Internal DividerA1c嘉泰姆
±20mV Accuracy for VTT and VTTREFA1c嘉泰姆

Independent Over-Current-Limit (OCL) A1c嘉泰姆

Thermal Shutdown ProtectionA1c嘉泰姆

QFN-24 4mmx4mm Thin Package (TQFN4x4-24A)A1c嘉泰姆
for CXSD62106 and QFN-20 3mmx3mm ThinA1c嘉泰姆
Package (TQFN3x3-20) for CXSD62106AA1c嘉泰姆
Lead Free and Green Devices Available
A1c嘉泰姆

三,应用范围 (Applications)A1c嘉泰姆


DDR2, and DDR3 Memory Power SuppliesA1c嘉泰姆
SSTL-2 SSTL-18 and HSTL TerminationA1c嘉泰姆
四.下载产品资料PDF文档 A1c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A1c嘉泰姆

 QQ截图20160419174301.jpgA1c嘉泰姆

五,产品封装图 (Package)A1c嘉泰姆


blob.pngblob.pngA1c嘉泰姆

六.电路原理图A1c嘉泰姆


blob.pngA1c嘉泰姆

七,功能概述A1c嘉泰姆


Layout Consideration (Cont.)A1c嘉泰姆

· Keep the switching nodes (UGATE, LGATE, BOOT, and PHASE) away from sensitive small signal nodesA1c嘉泰姆
(VDDQSET, VTTREF, CS, and MODE) since these nodes are fast mov ing signals. Therefore, keep tracesA1c嘉泰姆
to these nodes as short as possible and there should be no other weak signal traces in parallel with thesesA1c嘉泰姆
traces on any layer.A1c嘉泰姆
 The signals going through theses traces have both high dv/dt and high di/dt, with high peak charging andA1c嘉泰姆
discharging current. The traces from the gate drivers to the MOSFETs (UGATE and LGATE) should be shortA1c嘉泰姆
and wide.A1c嘉泰姆
Place the source of the high-side MOSFET and the drain of the low-side MOSFET as close as possible. Mini-A1c嘉泰姆
mizing the impedance with wide layout plane between the two pads reduces the voltage bounce of the node.
ceramic capacitor near the drain of the high-side MOSFET as close as possible. The bulk capacitors areA1c嘉泰姆
also placednear the drain).A1c嘉泰姆
The input capacitor should be near the drain of the up per MOSFET; the high quality ceramic decoupling ca-A1c嘉泰姆
pacitor can be put close to the VCC and GND pins; the VTTREF decoupling capasitor should be close to theA1c嘉泰姆
VTTREF pin and GND; the VDDQ and VTT output ca-pacitors should be located right across their output pinA1c嘉泰姆
as clase as possible to the part to minimize parasitics.A1c嘉泰姆
The input capacitor GND should be close to the output capacitor GND and the lower MOSFET GND.A1c嘉泰姆
· The drain of the MOSFETs (VIN and PHASE nodes) should be a large plane for heat sinking. And PHASEA1c嘉泰姆
pin traces are also the return path for UGATE. Connect this pin to the converter’s upper MOSFET source.A1c嘉泰姆
· The CXSD62106/A used ripple mode control. Build the resistor divider close to the VDDQSET pin so that theA1c嘉泰姆
high imped ance trace is shorter when the output volt-age is in ad justable mode. And the VDDQSET pinA1c嘉泰姆
traces can’t be closed to the switching signal traces (UGATE, LGATE, BOOT, and PHASE)A1c嘉泰姆
 The PGND trace should be a separate trace, and inde pendently go to the source of the low-side MOSFETsA1c嘉泰姆
for current limit accuracy.Decoupling capacitor, the resistor dividers, boot capacitors, and current limit stetting resistor should be close their pins. (For example, place the decouplingA1c嘉泰姆

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0.6|0.8A1c嘉泰姆

5~12A1c嘉泰姆

1200A1c嘉泰姆

CXSD6297A1c嘉泰姆

TDFN3x3-10A1c嘉泰姆

VMA1c嘉泰姆

1A1c嘉泰姆

1A1c嘉泰姆

25A1c嘉泰姆

4A1c嘉泰姆

13.2A1c嘉泰姆

0.8A1c嘉泰姆

5~12A1c嘉泰姆

2000A1c嘉泰姆

CXSD6298A1c嘉泰姆

TDFN3x3-10A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

1A1c嘉泰姆

25A1c嘉泰姆

4.5A1c嘉泰姆

25A1c嘉泰姆

0.6A1c嘉泰姆

5~12A1c嘉泰姆

80A1c嘉泰姆

CXSD6299|AA1c嘉泰姆

SOP-8PA1c嘉泰姆

VMA1c嘉泰姆

1A1c嘉泰姆

1A1c嘉泰姆

25A1c嘉泰姆

4.5A1c嘉泰姆

13.2A1c嘉泰姆

0.8A1c嘉泰姆

5~12A1c嘉泰姆

16000A1c嘉泰姆

CXSD62100A1c嘉泰姆

TQFN3x3-10A1c嘉泰姆

VMA1c嘉泰姆

1A1c嘉泰姆

1A1c嘉泰姆

25A1c嘉泰姆

4.5A1c嘉泰姆

13.2A1c嘉泰姆

0.6A1c嘉泰姆

5~12A1c嘉泰姆

2500A1c嘉泰姆

CXSD62101|LA1c嘉泰姆

TDFN3x3-10A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

1A1c嘉泰姆

30A1c嘉泰姆

3A1c嘉泰姆

25A1c嘉泰姆

0.8A1c嘉泰姆

5~12A1c嘉泰姆

2000A1c嘉泰姆

CXSD62102A1c嘉泰姆

TQFN3x3-16A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

1A1c嘉泰姆

30A1c嘉泰姆

1.8A1c嘉泰姆

28A1c嘉泰姆

0.6A1c嘉泰姆

5A1c嘉泰姆

600A1c嘉泰姆

CXSD62102AA1c嘉泰姆

TQFN 3x3 16A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

1A1c嘉泰姆

30A1c嘉泰姆

1.8A1c嘉泰姆

28A1c嘉泰姆

0.6A1c嘉泰姆

5A1c嘉泰姆

600A1c嘉泰姆

CXSD62103A1c嘉泰姆

QFN4x4-24A1c嘉泰姆

VMA1c嘉泰姆

2A1c嘉泰姆

1A1c嘉泰姆

50A1c嘉泰姆

4.5A1c嘉泰姆

13.2A1c嘉泰姆

0.6A1c嘉泰姆

5~12A1c嘉泰姆

5000A1c嘉泰姆

CXSD62104A1c嘉泰姆

TQFN4x4-24A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

2A1c嘉泰姆

15A1c嘉泰姆

6A1c嘉泰姆

25A1c嘉泰姆

2A1c嘉泰姆

NA1c嘉泰姆

550A1c嘉泰姆

CXSD62105A1c嘉泰姆

TQFN4x4-24A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

2A1c嘉泰姆

15A1c嘉泰姆

6A1c嘉泰姆

25A1c嘉泰姆

2A1c嘉泰姆

NA1c嘉泰姆

550A1c嘉泰姆

CXSD62106|AA1c嘉泰姆

TQFN4x4-4A1c嘉泰姆

TQFN3x3-20A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

2A1c嘉泰姆

20A1c嘉泰姆

3A1c嘉泰姆

28A1c嘉泰姆

0.75A1c嘉泰姆

5A1c嘉泰姆

800A1c嘉泰姆

CXSD62107A1c嘉泰姆

TQFN3x3-16A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

1A1c嘉泰姆

20A1c嘉泰姆

1.8A1c嘉泰姆

28A1c嘉泰姆

0.75A1c嘉泰姆

5A1c嘉泰姆

400A1c嘉泰姆

CXSD62108A1c嘉泰姆

QFN3.5x3.5-14A1c嘉泰姆

TQFN3x3-16A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

1A1c嘉泰姆

20A1c嘉泰姆

1.8A1c嘉泰姆

28A1c嘉泰姆

0.75A1c嘉泰姆

5A1c嘉泰姆

400A1c嘉泰姆

CXSD62109A1c嘉泰姆

TQFN3x3-16A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

2A1c嘉泰姆

20A1c嘉泰姆

1.8A1c嘉泰姆

28A1c嘉泰姆

0.75A1c嘉泰姆

5A1c嘉泰姆

400A1c嘉泰姆

CXSD62110A1c嘉泰姆

QFN3x3-20A1c嘉泰姆

TQFN3x3-16A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

2A1c嘉泰姆

20A1c嘉泰姆

3A1c嘉泰姆

28A1c嘉泰姆

1.8|1.5|0.5A1c嘉泰姆

5A1c嘉泰姆

740A1c嘉泰姆

CXSD62111A1c嘉泰姆

TQFN4x4-24A1c嘉泰姆

|QFN3x3-20A1c嘉泰姆

CMA1c嘉泰姆

1A1c嘉泰姆

2A1c嘉泰姆

15A1c嘉泰姆

5A1c嘉泰姆

28A1c嘉泰姆

0.5A1c嘉泰姆

NA1c嘉泰姆

3000A1c嘉泰姆

CXSD62112A1c嘉泰姆

TDFN3x3-10A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

1A1c嘉泰姆

20A1c嘉泰姆

1.8A1c嘉泰姆

28A1c嘉泰姆

0.5A1c嘉泰姆

5A1c嘉泰姆

250A1c嘉泰姆

CXSD62113|CA1c嘉泰姆

TQFN3x3-20A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

2A1c嘉泰姆

15A1c嘉泰姆

6A1c嘉泰姆

25A1c嘉泰姆

2A1c嘉泰姆

NA1c嘉泰姆

550A1c嘉泰姆

CXSD62113EA1c嘉泰姆

TQFN 3x3 20A1c嘉泰姆

COTA1c嘉泰姆

2A1c嘉泰姆

2A1c嘉泰姆

11A1c嘉泰姆

6A1c嘉泰姆

25A1c嘉泰姆

2A1c嘉泰姆

NA1c嘉泰姆

550A1c嘉泰姆

CXSD62114A1c嘉泰姆

TQFN3x3-20A1c嘉泰姆

COTA1c嘉泰姆

2A1c嘉泰姆

2A1c嘉泰姆

11A1c嘉泰姆

5.5A1c嘉泰姆

25A1c嘉泰姆

2A1c嘉泰姆

NA1c嘉泰姆

280A1c嘉泰姆

CXSD62115A1c嘉泰姆

QFN4x4-24A1c嘉泰姆

VMA1c嘉泰姆

2A1c嘉泰姆

1A1c嘉泰姆

60A1c嘉泰姆

3.1A1c嘉泰姆

13.2A1c嘉泰姆

0.85A1c嘉泰姆

12A1c嘉泰姆

5000A1c嘉泰姆

CXSD62116A|B|CA1c嘉泰姆

SOP-8PA1c嘉泰姆

VMA1c嘉泰姆

1A1c嘉泰姆

1A1c嘉泰姆

20A1c嘉泰姆

2.9A1c嘉泰姆

13.2A1c嘉泰姆

0.8A1c嘉泰姆

12A1c嘉泰姆

16000A1c嘉泰姆

CXSD62117A1c嘉泰姆

SOP-20A1c嘉泰姆

VMA1c嘉泰姆

2A1c嘉泰姆

2A1c嘉泰姆

30A1c嘉泰姆

10A1c嘉泰姆

13.2A1c嘉泰姆

1A1c嘉泰姆

12A1c嘉泰姆

5000A1c嘉泰姆

CXSD62118A1c嘉泰姆

TDFN3x3-10A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

1A1c嘉泰姆

25A1c嘉泰姆

1.8A1c嘉泰姆

28A1c嘉泰姆

0.7A1c嘉泰姆

5A1c嘉泰姆

250A1c嘉泰姆

CXSD62119A1c嘉泰姆

TQFN3x3-20A1c嘉泰姆

COTA1c嘉泰姆

2A1c嘉泰姆

1A1c嘉泰姆

40A1c嘉泰姆

1.8A1c嘉泰姆

25A1c嘉泰姆

REFIN SettingA1c嘉泰姆

5A1c嘉泰姆

700A1c嘉泰姆

CXSD62120A1c嘉泰姆

QFN 3x3 20A1c嘉泰姆

TQFN 3x3 16A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

2A1c嘉泰姆

20A1c嘉泰姆

3A1c嘉泰姆

28A1c嘉泰姆

1.8|1.5 1.35|1.2 0.5A1c嘉泰姆

5A1c嘉泰姆

800A1c嘉泰姆

CXSD62121AA1c嘉泰姆

TQFN3x3 20A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

2A1c嘉泰姆

15A1c嘉泰姆

3A1c嘉泰姆

28A1c嘉泰姆

0.75A1c嘉泰姆

5A1c嘉泰姆

220A1c嘉泰姆

CXSD62121BA1c嘉泰姆

TQFN3x3 20A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

2A1c嘉泰姆

15A1c嘉泰姆

3A1c嘉泰姆

28A1c嘉泰姆

0.75A1c嘉泰姆

5A1c嘉泰姆

220A1c嘉泰姆

CXSD62121A1c嘉泰姆

TQFN3x3-20A1c嘉泰姆

COTA1c嘉泰姆

1A1c嘉泰姆

2A1c嘉泰姆

20A1c嘉泰姆

3A1c嘉泰姆

28A1c嘉泰姆

0.75A1c嘉泰姆

5A1c嘉泰姆

180A1c嘉泰姆

 A1c嘉泰姆

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