CXSU63139

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F8P嘉泰姆

1.产品概述                       2.产品特点F8P嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 F8P嘉泰姆
5.产品封装图                     6.电路原理图                   F8P嘉泰姆
7.功能概述                        8.相关产品F8P嘉泰姆

一,产品概述(General Description)         F8P嘉泰姆


      The CXSU63139 is a synchronous rectifier, fixed switching frequency (1.2MHz typical), andF8P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.F8P嘉泰姆
      The CXSU63139 also includes current-limit and over-temperature shutdown to prevent damageF8P嘉泰姆
in the event of an output overload.F8P嘉泰姆
      The CXSU63139 is available in 4mmx4mm TQFN4x4-16 and DFN3x3-12 packages.F8P嘉泰姆
二.产品特点(Features)F8P嘉泰姆


1.)92% Effiicency Synchronous Boost Converter With 1000-mA Output Current FromF8P嘉泰姆
      1.8V Input
F8P嘉泰姆
2.)Stable with Low ESR Output CapacitorsF8P嘉泰姆
3.)Fixed 1.2MHz Oscillator FrequencyF8P嘉泰姆
4.)Low EMI Converter (Integrated Anti-Ringing Function)F8P嘉泰姆
5.)Low Battery OutputF8P嘉泰姆
6.)Integrated Power Save Mode Operation to Improve Light Load EfficiencyF8P嘉泰姆
7.)Load Disconnected During ShutdownF8P嘉泰姆
8.)Output Current-Limit ProtectionF8P嘉泰姆
9.)Over Temperature ProtectionF8P嘉泰姆
10.)Under Voltage ProtectionF8P嘉泰姆
11.)Enable/Shutdown FunctionF8P嘉泰姆
12.)Available in TQFN4x4-16 and DFN3x3-12 PackagesF8P嘉泰姆
13.)Lead Free and Green Devices Available (RoHS Compliant)F8P嘉泰姆
三,应用范围 (Applications)F8P嘉泰姆


Power BankF8P嘉泰姆
TabletF8P嘉泰姆
Portable EquimentF8P嘉泰姆
四.下载产品资料PDF文档 F8P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F8P嘉泰姆

 QQ截图20160419174301.jpgF8P嘉泰姆

五,产品封装图 (Package)F8P嘉泰姆


F8P嘉泰姆

PINF8P嘉泰姆

NAMEF8P嘉泰姆

FUNCTIONF8P嘉泰姆

1,15,16F8P嘉泰姆

VOUTF8P嘉泰姆

Converter Output and IC Supply Voltage.F8P嘉泰姆

2F8P嘉泰姆

NCF8P嘉泰姆

Enable in Charge DoneF8P嘉泰姆
No Internal Connection.F8P嘉泰姆

3,4F8P嘉泰姆

SWF8P嘉泰姆

Converter Switch Pin. Connect inductor here.F8P嘉泰姆

5,6,7F8P嘉泰姆

PGNDF8P嘉泰姆

Enable in Charge DoneF8P嘉泰姆
Power Ground. Connect these pins to GND.F8P嘉泰姆

8F8P嘉泰姆

VBATF8P嘉泰姆

Converter Supply Voltage.                      Enable in Charge DoneF8P嘉泰姆

9F8P嘉泰姆

LBIF8P嘉泰姆

Low Battery Indicator.F8P嘉泰姆

10F8P嘉泰姆

PSIF8P嘉泰姆

Power Saving Input. Force VPSI exceed 1V enter PFM. Left VPSI below 0.4V enter PWM mode.F8P嘉泰姆

11F8P嘉泰姆

ENF8P嘉泰姆

Device Enable Control Input. Force VEN exceed 1V enable the device. Left VEN below 0.4V toF8P嘉泰姆
shutdown.F8P嘉泰姆

12F8P嘉泰姆

LBOF8P嘉泰姆

Low Battery Output.F8P嘉泰姆

13F8P嘉泰姆

GNDF8P嘉泰姆

Signal Ground. Connect this pin to PGND.F8P嘉泰姆

14F8P嘉泰姆

FBF8P嘉泰姆

Converter Feedback Input.F8P嘉泰姆

Exposed PadF8P嘉泰姆

PGNDF8P嘉泰姆

Power Ground. Tie this pin to the ground island/plane through the lowest impedance connectionF8P嘉泰姆
available.F8P嘉泰姆

六.电路原理图F8P嘉泰姆


blob.pngF8P嘉泰姆

七,功能概述F8P嘉泰姆


Main Control LoopF8P嘉泰姆

The CXSU63139 is a constant frequency, synchronous rectifier, and current-mode switching regulator. F8P嘉泰姆

In normal operation, the internal N-channel power MOSFET is turned on each cycle when the oscillatorF8P嘉泰姆

 sets an internal RS latch and turned off when an internal comparator (ICMP) resets the latch. The peakF8P嘉泰姆

 inductor current which ICMP resets the RS latch is controlled by the voltage on the COMP node, which F8P嘉泰姆

is the output of the error amplifier (EAMP). An external resistive divider connected between VOUT and F8P嘉泰姆

ground allows the EAMP to receive an output feedback voltage VFB at FB pin. When the load current F8P嘉泰姆

increases, it causes a slightly decrease in VFB relative to the 0.5V reference, which in turn causes theF8P嘉泰姆

 COMP volt- age to increase until the average inductor current matches the new load current.F8P嘉泰姆
 Start-upF8P嘉泰姆
A start-up oscillator circuit is integrated in the CXSU63139.When the device enables, the circuit pumpsF8P嘉泰姆

 the output voltage high. Once the output voltage reaches 1.6V (typ),the main DC-DC circuitry turns onF8P嘉泰姆

 and boosts the output voltage to the final regulation voltage. F8P嘉泰姆
Automatic PFM/PWM mode SwitchF8P嘉泰姆
The CXSU63139 is a fixed frequency PWM peak current modulation control step-up converter. At lightF8P嘉泰姆

 loads, theCXSU63139 will automatically enter in pulse frequency modulation operation to reduce the F8P嘉泰姆

dominant switching losses. In PFM operation, the inductor current may reach zero or reverse on eachF8P嘉泰姆

 pulse. A zero current comparator turns off the P-channel synchronous MOSFET, forcing DCM(DiscontinuousF8P嘉泰姆

 Current Mode) operation at light load.These controls get very low quiescent current, help to maintain F8P嘉泰姆

high efficiency over the complete load range. F8P嘉泰姆
Synchronous RectificationF8P嘉泰姆
The internal synchronous rectifier eliminates the need for an external Schottky diode, thus reducing costF8P嘉泰姆

 and board space. During the cycle off-time, the P-FET turns on and shunts the FET body diode. As a F8P嘉泰姆

result, the syn-chronous rectifier significantly improves efficiency with-out the addition of an externalF8P嘉泰姆

 component. Conversion efficiency can be as high as 92%.F8P嘉泰姆
Load DisconnectF8P嘉泰姆
Driving EN to ground places the CXSU63139 in shutdown mode. When in shutdown, the internal powerF8P嘉泰姆

 MOSFET turns off, all internal circuitry shuts down and the quies-cent supply current reduces to 1μAF8P嘉泰姆

 maximum.A special circuit is applied to disconnect the load from the input during shutdown the F8P嘉泰姆

converter. In conventional syn-chronous rectifier circuits, the back-gate diode of the high-side P-FET F8P嘉泰姆

is forward biased in shutdown and allows current flowing from the battery to the output. However,thisF8P嘉泰姆

 device uses a special circuit, which takes the cath-ode of the back-gate diode of the high-side P-FETF8P嘉泰姆

 and disconnects it from the source when the regulator is shutdown. The benefit of this feature for F8P嘉泰姆

the system de-sign engineer is that the battery is not depleted during shutdown of the converter.  F8P嘉泰姆

No additional componentsmust be added to the design to make sure that the bat-tery is disconnectedF8P嘉泰姆

 from the output of the converter. F8P嘉泰姆
Current-Limit ProtectionF8P嘉泰姆
The CXSU63139 monitors the inductor current, flowing through the N-FET, and  limits the current F8P嘉泰姆

peak at current-limit level to prevent loads and the CXSU63139 from dam-ages during overloadF8P嘉泰姆

 conditions.F8P嘉泰姆
Over-Temperature Protection (OTP)F8P嘉泰姆
The over-temperature circuit limits the junction tempera-ture of the CXSU63139. When the junctionF8P嘉泰姆

 temperature ex-ceeds 150oC, a thermal sensor turns off the both N-FETand P-FET, allowing the F8P嘉泰姆

devices to cool. The thermal sensor allows the converters to start a soft-start process and regulateF8P嘉泰姆

 the output voltage again after the junction temperature cools by 30oC. The OTP is designed with F8P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.F8P嘉泰姆

八,相关产品                 更多同类产品......F8P嘉泰姆


Switching Regulator > Boost ConverterF8P嘉泰姆

 Part_No F8P嘉泰姆

PackageF8P嘉泰姆

Archi-tecture F8P嘉泰姆

Input F8P嘉泰姆

Voltage    F8P嘉泰姆

Max Adj.F8P嘉泰姆

Output F8P嘉泰姆

Voltage F8P嘉泰姆

Switch Current Limit (max) F8P嘉泰姆

Fixed F8P嘉泰姆

Output F8P嘉泰姆

Voltage  F8P嘉泰姆

Switching F8P嘉泰姆

Frequency F8P嘉泰姆

Internal Power   Switch F8P嘉泰姆

Sync. Rectifier F8P嘉泰姆

 

minF8P嘉泰姆

maxF8P嘉泰姆

minF8P嘉泰姆

maxF8P嘉泰姆

(A)F8P嘉泰姆

(V)F8P嘉泰姆

(kHz)F8P嘉泰姆

 

CXSU63133F8P嘉泰姆

SOT89F8P嘉泰姆

VM F8P嘉泰姆

0.9F8P嘉泰姆

5.5F8P嘉泰姆

2.5F8P嘉泰姆

5.5F8P嘉泰姆

0.5F8P嘉泰姆

1.8|2.6|2.8|3F8P嘉泰姆

|3.3|3.8|4.5|5F8P嘉泰姆

-F8P嘉泰姆

NoF8P嘉泰姆

YesF8P嘉泰姆

CXSU63134F8P嘉泰姆

MSOP8|TSSOP8F8P嘉泰姆

|SOP8F8P嘉泰姆

VMF8P嘉泰姆

2.5F8P嘉泰姆

5.5F8P嘉泰姆

2.5F8P嘉泰姆

-F8P嘉泰姆

-F8P嘉泰姆

-F8P嘉泰姆

200 ~ 1000F8P嘉泰姆

NoF8P嘉泰姆

NoF8P嘉泰姆

CXSU63135F8P嘉泰姆

TSSOP8|SOP-8PF8P嘉泰姆

VMF8P嘉泰姆

1F8P嘉泰姆

5.5F8P嘉泰姆

2.5F8P嘉泰姆

5F8P嘉泰姆

1F8P嘉泰姆

2.5|3.3F8P嘉泰姆

300F8P嘉泰姆

YesF8P嘉泰姆

YesF8P嘉泰姆

CXSU63136F8P嘉泰姆

SOP8F8P嘉泰姆

CMF8P嘉泰姆

3F8P嘉泰姆

40F8P嘉泰姆

1.25F8P嘉泰姆

40F8P嘉泰姆

1.5F8P嘉泰姆

-F8P嘉泰姆

33 ~ 100F8P嘉泰姆

YesF8P嘉泰姆

NoF8P嘉泰姆

CXSU63137F8P嘉泰姆

TQFN5x5-32F8P嘉泰姆

CMF8P嘉泰姆

2.5F8P嘉泰姆

6.5F8P嘉泰姆

2.5F8P嘉泰姆

18F8P嘉泰姆

3F8P嘉泰姆

NoF8P嘉泰姆

1200F8P嘉泰姆

YesF8P嘉泰姆

NoF8P嘉泰姆

CXSU63138F8P嘉泰姆

TSOT23-5F8P嘉泰姆

TDFN2x2-6F8P嘉泰姆

CMF8P嘉泰姆

2.5F8P嘉泰姆

6F8P嘉泰姆

2.5F8P嘉泰姆

20F8P嘉泰姆

2F8P嘉泰姆

-F8P嘉泰姆

1500F8P嘉泰姆

YesF8P嘉泰姆

NoF8P嘉泰姆

CXSU63139F8P嘉泰姆

TQFN4x4-6F8P嘉泰姆

TDFN3x3-12F8P嘉泰姆

CMF8P嘉泰姆

1.8F8P嘉泰姆

5.5F8P嘉泰姆

2.7F8P嘉泰姆

5.5F8P嘉泰姆

5F8P嘉泰姆

-F8P嘉泰姆

1.2F8P嘉泰姆

YesF8P嘉泰姆

YesF8P嘉泰姆

CXSU63140F8P嘉泰姆

SOT23-5F8P嘉泰姆

CMF8P嘉泰姆

2.5F8P嘉泰姆

6F8P嘉泰姆

2.5F8P嘉泰姆

32F8P嘉泰姆

1F8P嘉泰姆

-F8P嘉泰姆

1000F8P嘉泰姆

YesF8P嘉泰姆

NoF8P嘉泰姆

CXSU63141F8P嘉泰姆

TSOT-23-6 F8P嘉泰姆

TDFN2x2-8F8P嘉泰姆

CMF8P嘉泰姆

1.2F8P嘉泰姆

5.5F8P嘉泰姆

1.8F8P嘉泰姆

5.5F8P嘉泰姆

1.2F8P嘉泰姆

-F8P嘉泰姆

1.2F8P嘉泰姆

YesF8P嘉泰姆

YesF8P嘉泰姆

F8P嘉泰姆

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