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首页 > 产品中心 > 电源管理 > DC升压型转换器 > DC升压转换 >2.5V至6V输入电压0.6ΩN沟道MOSFET内置软启动CXSU63140固定开关频率电流模式升压集成N沟道MOSFET的稳压器
2.5V至6V输入电压0.6ΩN沟道MOSFET内置软启动CXSU63140固定开关频率电流模式升压集成N沟道MOSFET的稳压器
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CXSU63140是一种固定开关频率(典型为1MHz)、电流模式、升压集成N沟道MOSFET的稳压器。该设备允许使用便携式设备用电感器和输出电容器。当前模式控制方案提供快速的瞬态响应和良好的输出电压精度欠压闭锁、限流、超温停堆-输出过载时的老化

2.5V至6V输入电压0.6ΩN沟道MOSFET内置软启动CXSU63140固定开关频率电流模式升压集成N沟道MOSFET的稳压器
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产品简介

目录2wQ嘉泰姆

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

一,产品概述(General Description)  2wQ嘉泰姆


           The CXSU63140 is a fixed switching frequency (1MHz typical), current-mode, step-up2wQ嘉泰姆
regulator with an inte-grated N-channel MOSFET. The device allows the usage of small2wQ嘉泰姆
inductors and output capacitors for portable devices. The current-mode control scheme2wQ嘉泰姆
provides fast transient response and good output voltage accuracy.The CXSU63140 includes2wQ嘉泰姆
under-voltage lockout, current-limit, and over-temperature shutdown preventing dam-2wQ嘉泰姆
age in the event of an output overload2wQ嘉泰姆
二.产品特点(Features)2wQ嘉泰姆


1.)Wide 2.5V to 6V Input Voltage Range2wQ嘉泰姆
2.)Built-in 0.6 N-Channel MOSFET2wQ嘉泰姆
3.)Built-in Soft-Start2wQ嘉泰姆
4.)High Efficiency up to 90%2wQ嘉泰姆
5.)<1μA Quiescent Current During Shutdown2wQ嘉泰姆
6.)Current-Mode Operation2wQ嘉泰姆
    Stable with Ceramic Output Capacitors2wQ嘉泰姆
    Fast Transient Response2wQ嘉泰姆
7.)Current-Limit Protection2wQ嘉泰姆
8.)Over-Temperature Protection with Hysteresis2wQ嘉泰姆
9.)Available in a Tiny 5-Pin SOT-23 and TSOT-23Packages2wQ嘉泰姆
10.)Lead Free and Green Devices Available(RoHS Compliant)2wQ嘉泰姆
三,应用范围 (Applications)2wQ嘉泰姆


Cell Phone and Smart Phone2wQ嘉泰姆
PDA, PMP, MP32wQ嘉泰姆
Digital Camera2wQ嘉泰姆
Boost Regulators2wQ嘉泰姆
四.下载产品资料PDF文档 2wQ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2wQ嘉泰姆

 QQ截图20160419174301.jpg2wQ嘉泰姆

五,产品封装图 (Package)2wQ嘉泰姆


blob.png2wQ嘉泰姆

PIN.2wQ嘉泰姆

FUNCTION2wQ嘉泰姆

NO2wQ嘉泰姆

NAME2wQ嘉泰姆

12wQ嘉泰姆

LX2wQ嘉泰姆

Switch pin. Connect this pin to inductor/diode here.2wQ嘉泰姆

22wQ嘉泰姆

GND2wQ嘉泰姆

Power and signal ground pin.2wQ嘉泰姆

32wQ嘉泰姆

FB2wQ嘉泰姆

Feedback Input. The device senses feedback voltage via FB and regulate the voltage at 1.23V.2wQ嘉泰姆
Connecting FB with a resistor-divider from the output that sets the output voltage in the range from2wQ嘉泰姆
VIN to 30V.2wQ嘉泰姆

42wQ嘉泰姆

EN2wQ嘉泰姆

Enable Control Input. Forcing this pin above 1.0V enables the device. Forcing this pin below 0.4V to2wQ嘉泰姆
shut it down. In shutdown, all functions are disabled to decrease the supply current below 1μA. Do2wQ嘉泰姆
not left this pin floating.2wQ嘉泰姆

52wQ嘉泰姆

VIN2wQ嘉泰姆

Main Supply Pin. Must be closely decoupled to GND with a 2.2μF or greater ceramic capacitor.2wQ嘉泰姆

六.电路原理图2wQ嘉泰姆


blob.png2wQ嘉泰姆
blob.png2wQ嘉泰姆

 2wQ嘉泰姆

七,功能概述2wQ嘉泰姆


Main Control Loop2wQ嘉泰姆
The CXSU63140 is a constant frequency and current-mode switching regulator. In normal operation, 2wQ嘉泰姆

the internal N-channel power MOSFET is turned on each cycle when the oscillator sets an internal2wQ嘉泰姆

 RS latch, and then turned off when an internal comparator (ICMP) resets the latch. The peak inductor2wQ嘉泰姆

 current at which ICMP resets the RS latch is controlled by the voltage on the COMP node which is the2wQ嘉泰姆

 output of the error amplifier (EAMP). An external resis-tive divider connected between VOUT and 2wQ嘉泰姆

ground allows the EAMP to receive an output feedback voltage VFB at FB pin. When the load current2wQ嘉泰姆

 increases, it causes a slightly to decrease in VFB associated with the 1.23V reference,which in turn, 2wQ嘉泰姆

it causes the COMP voltage to increase until the average inductor current matches the new load current. 2wQ嘉泰姆
VIN Under-Voltage Lockout (UVLO)2wQ嘉泰姆
The Under-Voltage Lockout (UVLO) circuit compares the input voltage at VIN with the UVLO threshold 2wQ嘉泰姆

to ensure the input voltage is high enough for reliable operation.The 100mV (typ) hysteresis prevents2wQ嘉泰姆

 supply transients from causing a restart. Once the input voltage exceeds the UVLO rising threshold,2wQ嘉泰姆

 startup begins. When the in-put voltage falls below the UVLO falling threshold, the controller turns2wQ嘉泰姆

 off the converter.2wQ嘉泰姆
Soft-Start2wQ嘉泰姆
The CXSU63140 has a built-in soft-start to control the output voltage rise during start-up. During 2wQ嘉泰姆

soft-start, an internal ramp voltage, connected to the one of the positive inputs of the error 2wQ嘉泰姆

amplifier, raises up to replace the reference voltage (1.23V typical) until the ramp voltage 2wQ嘉泰姆

reaches the reference voltage.2wQ嘉泰姆
Current-Limit Protection2wQ嘉泰姆
The CXSU63140 monitors the inductor current, flows through the N-channel MOSFET, and 2wQ嘉泰姆

limits the current peak at current-limit level to prevent loads and the CXSU63140 from 2wQ嘉泰姆

damaging during overload or short-circuit conditions.2wQ嘉泰姆
Over-Temperature Protection (OTP)2wQ嘉泰姆
The over-temperature circuit limits the junction tempera-ture of the CXSU63140. When 2wQ嘉泰姆

the junction temperature ex-ceeds 150 oC, a thermal sensor turns off the power MOSFET2wQ嘉泰姆

 allowing the devices to cool. The thermal sen-sor allows the converters to start a soft-start2wQ嘉泰姆

 process and regulates the output voltage again after the junction tem-perature cools by 40oC. 2wQ嘉泰姆

The OTP is designed with a 40oC hysteresis to lower the average Junction Temperature2wQ嘉泰姆
(TJ) during continuous thermal overload conditions in-creasing the lifetime of the device.2wQ嘉泰姆
Enable/Shutdown2wQ嘉泰姆
Driving EN to the ground places the CXSU63140 in shut- down mode. When in shutdown, 2wQ嘉泰姆

the internal power MOSFET turns off, all internal circuitry shuts down, andthe quiescent 2wQ嘉泰姆

supply current reduces to 1μA maximum.2wQ嘉泰姆
八,相关产品                    更多同类产品......2wQ嘉泰姆


Switching Regulator > Boost Converter2wQ嘉泰姆

 Part_No 2wQ嘉泰姆

Package2wQ嘉泰姆

Archi-tecture 2wQ嘉泰姆

Input 2wQ嘉泰姆

Voltage    2wQ嘉泰姆

Max Adj.2wQ嘉泰姆

Output 2wQ嘉泰姆

Voltage 2wQ嘉泰姆

Switch Current Limit (max) 2wQ嘉泰姆

Fixed 2wQ嘉泰姆

Output 2wQ嘉泰姆

Voltage  2wQ嘉泰姆

Switching 2wQ嘉泰姆

Frequency 2wQ嘉泰姆

Internal Power   Switch 2wQ嘉泰姆

Sync. Rectifier 2wQ嘉泰姆

 

min2wQ嘉泰姆

max2wQ嘉泰姆

min2wQ嘉泰姆

max2wQ嘉泰姆

(A)2wQ嘉泰姆

(V)2wQ嘉泰姆

(kHz)2wQ嘉泰姆

 

CXSU631332wQ嘉泰姆

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VM 2wQ嘉泰姆

0.92wQ嘉泰姆

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1.8|2.6|2.8|32wQ嘉泰姆

|3.3|3.8|4.5|52wQ嘉泰姆

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MSOP8|TSSOP82wQ嘉泰姆

|SOP82wQ嘉泰姆

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5.52wQ嘉泰姆

2.52wQ嘉泰姆

-2wQ嘉泰姆

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-2wQ嘉泰姆

200 ~ 10002wQ嘉泰姆

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CXSU631352wQ嘉泰姆

TSSOP8|SOP-8P2wQ嘉泰姆

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2.5|3.32wQ嘉泰姆

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402wQ嘉泰姆

1.252wQ嘉泰姆

402wQ嘉泰姆

1.52wQ嘉泰姆

-2wQ嘉泰姆

33 ~ 1002wQ嘉泰姆

Yes2wQ嘉泰姆

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CXSU631372wQ嘉泰姆

TQFN5x5-322wQ嘉泰姆

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SOT23-52wQ嘉泰姆

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