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首页 > 产品中心 > 电源管理 > 同异步升降压DC转换器 > 同步DC-DC升压IC >固定1.2兆赫振荡器频率同步整流器CXSU63139低ESR输出电容稳定电流模式升压调节器92%效率
固定1.2兆赫振荡器频率同步整流器CXSU63139低ESR输出电容稳定电流模式升压调节器92%效率
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CXSU63139是同步整流器,固定开关频率(典型为1.2兆赫),以及电流模式升压调节器。该设备允许使用USB设备的小电感和输出电容器。电流模式控制方案具有快速的瞬态响应和良好的输出电压精度,在轻负载时,CXSU63139将自动进入脉冲频率调制(PFM)操作,以降低主开关损耗

固定1.2兆赫振荡器频率同步整流器CXSU63139低ESR输出电容稳定电流模式升压调节器92%效率
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产品简介

目录RnA嘉泰姆

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

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


      The CXSU63139 is a synchronous rectifier, fixed switching frequency (1.2MHz typical), andRnA嘉泰姆
current-mode step-up regulator. The device allows use of small inductors and output capacitors for USB devices. The current-mode control scheme provides fast transient response and good output voltage accuracy.At light loads, the CXSU63139 will automatically enter in Pulse Frequency Modulation (PFM) operation to reduce the dominant switching losses. During PFM operation,the IC consumes very low quiescent current and maintains high efficiency over the complete load range.RnA嘉泰姆
      The CXSU63139 also includes current-limit and over-temperature shutdown to prevent damageRnA嘉泰姆
in the event of an output overload.RnA嘉泰姆
      The CXSU63139 is available in 4mmx4mm TQFN4x4-16 and DFN3x3-12 packages.RnA嘉泰姆
二.产品特点(Features)RnA嘉泰姆


1.)92% Effiicency Synchronous Boost Converter With 1000-mA Output Current FromRnA嘉泰姆
      1.8V Input
RnA嘉泰姆
2.)Stable with Low ESR Output CapacitorsRnA嘉泰姆
3.)Fixed 1.2MHz Oscillator FrequencyRnA嘉泰姆
4.)Low EMI Converter (Integrated Anti-Ringing Function)RnA嘉泰姆
5.)Low Battery OutputRnA嘉泰姆
6.)Integrated Power Save Mode Operation to Improve Light Load EfficiencyRnA嘉泰姆
7.)Load Disconnected During ShutdownRnA嘉泰姆
8.)Output Current-Limit ProtectionRnA嘉泰姆
9.)Over Temperature ProtectionRnA嘉泰姆
10.)Under Voltage ProtectionRnA嘉泰姆
11.)Enable/Shutdown FunctionRnA嘉泰姆
12.)Available in TQFN4x4-16 and DFN3x3-12 PackagesRnA嘉泰姆
13.)Lead Free and Green Devices Available (RoHS Compliant)RnA嘉泰姆
三,应用范围 (Applications)RnA嘉泰姆


Power BankRnA嘉泰姆
TabletRnA嘉泰姆
Portable EquimentRnA嘉泰姆
四.下载产品资料PDF文档 RnA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RnA嘉泰姆

 QQ截图20160419174301.jpgRnA嘉泰姆

五,产品封装图 (Package)RnA嘉泰姆


RnA嘉泰姆

PINRnA嘉泰姆

NAMERnA嘉泰姆

FUNCTIONRnA嘉泰姆

1,15,16RnA嘉泰姆

VOUTRnA嘉泰姆

Converter Output and IC Supply Voltage.RnA嘉泰姆

2RnA嘉泰姆

NCRnA嘉泰姆

Enable in Charge DoneRnA嘉泰姆
No Internal Connection.RnA嘉泰姆

3,4RnA嘉泰姆

SWRnA嘉泰姆

Converter Switch Pin. Connect inductor here.RnA嘉泰姆

5,6,7RnA嘉泰姆

PGNDRnA嘉泰姆

Enable in Charge DoneRnA嘉泰姆
Power Ground. Connect these pins to GND.RnA嘉泰姆

8RnA嘉泰姆

VBATRnA嘉泰姆

Converter Supply Voltage.                      Enable in Charge DoneRnA嘉泰姆

9RnA嘉泰姆

LBIRnA嘉泰姆

Low Battery Indicator.RnA嘉泰姆

10RnA嘉泰姆

PSIRnA嘉泰姆

Power Saving Input. Force VPSI exceed 1V enter PFM. Left VPSI below 0.4V enter PWM mode.RnA嘉泰姆

11RnA嘉泰姆

ENRnA嘉泰姆

Device Enable Control Input. Force VEN exceed 1V enable the device. Left VEN below 0.4V toRnA嘉泰姆
shutdown.RnA嘉泰姆

12RnA嘉泰姆

LBORnA嘉泰姆

Low Battery Output.RnA嘉泰姆

13RnA嘉泰姆

GNDRnA嘉泰姆

Signal Ground. Connect this pin to PGND.RnA嘉泰姆

14RnA嘉泰姆

FBRnA嘉泰姆

Converter Feedback Input.RnA嘉泰姆

Exposed PadRnA嘉泰姆

PGNDRnA嘉泰姆

Power Ground. Tie this pin to the ground island/plane through the lowest impedance connectionRnA嘉泰姆
available.RnA嘉泰姆

六.电路原理图RnA嘉泰姆


blob.pngRnA嘉泰姆

七,功能概述RnA嘉泰姆


Main Control LoopRnA嘉泰姆

The CXSU63139 is a constant frequency, synchronous rectifier, and current-mode switching regulator. RnA嘉泰姆

In normal operation, the internal N-channel power MOSFET is turned on each cycle when the oscillatorRnA嘉泰姆

 sets an internal RS latch and turned off when an internal comparator (ICMP) resets the latch. The peakRnA嘉泰姆

 inductor current which ICMP resets the RS latch is controlled by the voltage on the COMP node, which RnA嘉泰姆

is the output of the error amplifier (EAMP). An external resistive divider connected between VOUT and RnA嘉泰姆

ground allows the EAMP to receive an output feedback voltage VFB at FB pin. When the load current RnA嘉泰姆

increases, it causes a slightly decrease in VFB relative to the 0.5V reference, which in turn causes theRnA嘉泰姆

 COMP volt- age to increase until the average inductor current matches the new load current.RnA嘉泰姆
 Start-upRnA嘉泰姆
A start-up oscillator circuit is integrated in the CXSU63139.When the device enables, the circuit pumpsRnA嘉泰姆

 the output voltage high. Once the output voltage reaches 1.6V (typ),the main DC-DC circuitry turns onRnA嘉泰姆

 and boosts the output voltage to the final regulation voltage. RnA嘉泰姆
Automatic PFM/PWM mode SwitchRnA嘉泰姆
The CXSU63139 is a fixed frequency PWM peak current modulation control step-up converter. At lightRnA嘉泰姆

 loads, theCXSU63139 will automatically enter in pulse frequency modulation operation to reduce the RnA嘉泰姆

dominant switching losses. In PFM operation, the inductor current may reach zero or reverse on eachRnA嘉泰姆

 pulse. A zero current comparator turns off the P-channel synchronous MOSFET, forcing DCM(DiscontinuousRnA嘉泰姆

 Current Mode) operation at light load.These controls get very low quiescent current, help to maintain RnA嘉泰姆

high efficiency over the complete load range. RnA嘉泰姆
Synchronous RectificationRnA嘉泰姆
The internal synchronous rectifier eliminates the need for an external Schottky diode, thus reducing costRnA嘉泰姆

 and board space. During the cycle off-time, the P-FET turns on and shunts the FET body diode. As a RnA嘉泰姆

result, the syn-chronous rectifier significantly improves efficiency with-out the addition of an externalRnA嘉泰姆

 component. Conversion efficiency can be as high as 92%.RnA嘉泰姆
Load DisconnectRnA嘉泰姆
Driving EN to ground places the CXSU63139 in shutdown mode. When in shutdown, the internal powerRnA嘉泰姆

 MOSFET turns off, all internal circuitry shuts down and the quies-cent supply current reduces to 1μARnA嘉泰姆

 maximum.A special circuit is applied to disconnect the load from the input during shutdown the RnA嘉泰姆

converter. In conventional syn-chronous rectifier circuits, the back-gate diode of the high-side P-FET RnA嘉泰姆

is forward biased in shutdown and allows current flowing from the battery to the output. However,thisRnA嘉泰姆

 device uses a special circuit, which takes the cath-ode of the back-gate diode of the high-side P-FETRnA嘉泰姆

 and disconnects it from the source when the regulator is shutdown. The benefit of this feature for RnA嘉泰姆

the system de-sign engineer is that the battery is not depleted during shutdown of the converter.  RnA嘉泰姆

No additional componentsmust be added to the design to make sure that the bat-tery is disconnectedRnA嘉泰姆

 from the output of the converter. RnA嘉泰姆
Current-Limit ProtectionRnA嘉泰姆
The CXSU63139 monitors the inductor current, flowing through the N-FET, and  limits the current RnA嘉泰姆

peak at current-limit level to prevent loads and the CXSU63139 from dam-ages during overloadRnA嘉泰姆

 conditions.RnA嘉泰姆
Over-Temperature Protection (OTP)RnA嘉泰姆
The over-temperature circuit limits the junction tempera-ture of the CXSU63139. When the junctionRnA嘉泰姆

 temperature ex-ceeds 150oC, a thermal sensor turns off the both N-FETand P-FET, allowing the RnA嘉泰姆

devices to cool. The thermal sensor allows the converters to start a soft-start process and regulateRnA嘉泰姆

 the output voltage again after the junction temperature cools by 30oC. The OTP is designed with RnA嘉泰姆

a 30oC hysteresis to lower the average Junction Tempera-ture (TJ) during continuous thermal overload conditions,increasing the lifetime of the device.RnA嘉泰姆

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


Switching Regulator > Boost ConverterRnA嘉泰姆

 Part_No RnA嘉泰姆

PackageRnA嘉泰姆

Archi-tecture RnA嘉泰姆

Input RnA嘉泰姆

Voltage    RnA嘉泰姆

Max Adj.RnA嘉泰姆

Output RnA嘉泰姆

Voltage RnA嘉泰姆

Switch Current Limit (max) RnA嘉泰姆

Fixed RnA嘉泰姆

Output RnA嘉泰姆

Voltage  RnA嘉泰姆

Switching RnA嘉泰姆

Frequency RnA嘉泰姆

Internal Power   Switch RnA嘉泰姆

Sync. Rectifier RnA嘉泰姆

 

minRnA嘉泰姆

maxRnA嘉泰姆

minRnA嘉泰姆

maxRnA嘉泰姆

(A)RnA嘉泰姆

(V)RnA嘉泰姆

(kHz)RnA嘉泰姆

 

CXSU63133RnA嘉泰姆

SOT89RnA嘉泰姆

VM RnA嘉泰姆

0.9RnA嘉泰姆

5.5RnA嘉泰姆

2.5RnA嘉泰姆

5.5RnA嘉泰姆

0.5RnA嘉泰姆

1.8|2.6|2.8|3RnA嘉泰姆

|3.3|3.8|4.5|5RnA嘉泰姆

-RnA嘉泰姆

NoRnA嘉泰姆

YesRnA嘉泰姆

CXSU63134RnA嘉泰姆

MSOP8|TSSOP8RnA嘉泰姆

|SOP8RnA嘉泰姆

VMRnA嘉泰姆

2.5RnA嘉泰姆

5.5RnA嘉泰姆

2.5RnA嘉泰姆

-RnA嘉泰姆

-RnA嘉泰姆

-RnA嘉泰姆

200 ~ 1000RnA嘉泰姆

NoRnA嘉泰姆

NoRnA嘉泰姆

CXSU63135RnA嘉泰姆

TSSOP8|SOP-8PRnA嘉泰姆

VMRnA嘉泰姆

1RnA嘉泰姆

5.5RnA嘉泰姆

2.5RnA嘉泰姆

5RnA嘉泰姆

1RnA嘉泰姆

2.5|3.3RnA嘉泰姆

300RnA嘉泰姆

YesRnA嘉泰姆

YesRnA嘉泰姆

CXSU63136RnA嘉泰姆

SOP8RnA嘉泰姆

CMRnA嘉泰姆

3RnA嘉泰姆

40RnA嘉泰姆

1.25RnA嘉泰姆

40RnA嘉泰姆

1.5RnA嘉泰姆

-RnA嘉泰姆

33 ~ 100RnA嘉泰姆

YesRnA嘉泰姆

NoRnA嘉泰姆

CXSU63137RnA嘉泰姆

TQFN5x5-32RnA嘉泰姆

CMRnA嘉泰姆

2.5RnA嘉泰姆

6.5RnA嘉泰姆

2.5RnA嘉泰姆

18RnA嘉泰姆

3RnA嘉泰姆

NoRnA嘉泰姆

1200RnA嘉泰姆

YesRnA嘉泰姆

NoRnA嘉泰姆

CXSU63138RnA嘉泰姆

TSOT23-5RnA嘉泰姆

TDFN2x2-6RnA嘉泰姆

CMRnA嘉泰姆

2.5RnA嘉泰姆

6RnA嘉泰姆

2.5RnA嘉泰姆

20RnA嘉泰姆

2RnA嘉泰姆

-RnA嘉泰姆

1500RnA嘉泰姆

YesRnA嘉泰姆

NoRnA嘉泰姆

CXSU63139RnA嘉泰姆

TQFN4x4-6RnA嘉泰姆

TDFN3x3-12RnA嘉泰姆

CMRnA嘉泰姆

1.8RnA嘉泰姆

5.5RnA嘉泰姆

2.7RnA嘉泰姆

5.5RnA嘉泰姆

5RnA嘉泰姆

-RnA嘉泰姆

1.2RnA嘉泰姆

YesRnA嘉泰姆

YesRnA嘉泰姆

CXSU63140RnA嘉泰姆

SOT23-5RnA嘉泰姆

CMRnA嘉泰姆

2.5RnA嘉泰姆

6RnA嘉泰姆

2.5RnA嘉泰姆

32RnA嘉泰姆

1RnA嘉泰姆

-RnA嘉泰姆

1000RnA嘉泰姆

YesRnA嘉泰姆

NoRnA嘉泰姆

CXSU63141RnA嘉泰姆

TSOT-23-6 RnA嘉泰姆

TDFN2x2-8RnA嘉泰姆

CMRnA嘉泰姆

1.2RnA嘉泰姆

5.5RnA嘉泰姆

1.8RnA嘉泰姆

5.5RnA嘉泰姆

1.2RnA嘉泰姆

-RnA嘉泰姆

1.2RnA嘉泰姆

YesRnA嘉泰姆

YesRnA嘉泰姆

RnA嘉泰姆

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