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XC9237A29CEL-G

更新时间： 2024-11-01 18:49:39
品牌 Logo 应用领域
特瑞仕 - TOREX /
页数 文件大小 规格书
32页 864K
描述
Switching Regulator/Controller

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中文翻译

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XC9237A29CEL-G 技术参数

是否Rohs认证： 符合生命周期：Active
包装说明：,Reach Compliance Code：compliant
风险等级：5.77湿度敏感等级：1
Base Number Matches：1

XC9237A29CEL-G 数据手册

 浏览型号XC9237A29CEL-G的Datasheet PDF文件第2页浏览型号XC9237A29CEL-G的Datasheet PDF文件第3页浏览型号XC9237A29CEL-G的Datasheet PDF文件第4页浏览型号XC9237A29CEL-G的Datasheet PDF文件第5页浏览型号XC9237A29CEL-G的Datasheet PDF文件第6页浏览型号XC9237A29CEL-G的Datasheet PDF文件第7页 
XC9235/XC9236/XC9237Series  
ETR0514-009  
600mA Driver Tr. Built-In, Synchronous Step-Down DC/DC Converters  
☆GreenOperation Compatible  
■GENERAL DESCRIPTION  
The XC9235/XC9236/XC9237 series is a group of synchronous-rectification type DC/DC converters with a built-in 0.42Ω  
P-channel driver transistor and 0.52ΩN-channel switching transistor, designed to allow the use of ceramic capacitors. Operating  
voltage range is from 2.0V to 6.0V (A～C types), 1.8V to 6.0V (D～G types). For the D/F types which have a reference voltage  
of 0.8V (accuracy: ±2.0%), the output voltage can be set from 0.9V by using two external resistors. The A/B/C/E/G types have  
a fixed output voltage from 0.8V to 4.0V in increments of 0.05V (accuracy: ±2.0%). The device provides a high efficiency, stable  
power supply with an output current of 600mA to be configured using only a coil and two capacitors connected externally.  
With the built-in oscillator, ether 1.2MHz or 3.0MHz can be selected for suiting to your particular application. As for operation  
mode, the XC9235 series is PWM control, the XC9236 series is automatic PWM/PFM switching control and the XC9237 series  
can be manually switched between the PWM control mode and the automatic PWM/PFM switching control mode, allowing fast  
response, low ripple and high efficiency over the full range of loads (from light load to heavy load).  
The soft start and current control functions are internally optimized. During stand-by, all circuits are shutdown to reduce current  
consumption to as low as 1.0μA or less. The B/F/G types have a high speed soft-start as fast as 0.25ms in typical for quick  
turn-on. With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel driver transistor is forced OFF when  
input voltage becomes 1.4V or lower.  
The B to G types integrate CL auto discharge function which enables the electric charge at the output capacitor CL to be  
discharged via the internal auto-discharge switch located between the LX and VSS pins. When the devices enter stand-by mode,  
output voltage quickly returns to the VSS level as a result of this function.  
Two types of package SOT-25 (A/B/C types only) and USP-6C are available.  
■FEATURES  
■APPLICATIONS  
●Mobile phones, Smart phones  
●Bluetooth headsets  
P-ch Driver Transistor Built-In : ON resistance 0.42Ω  
N-ch Driver Transistor Built-In : ON resistance 0.52Ω  
Input Voltage  
: 2.0V ~ 6.0V (A/B/C types)  
: 1.8V ~ 6.0V (D/E/F/G types)  
: 0.8V ~ 4.0V  
●Mobile WiMAX PDAs, MIDs, UMPCs  
●Portable game consoles  
Output Voltage  
●Digital cameras, Camcorders  
●MP3 Players, Portable Media Players  
●Notebook computers  
High Efficiency  
: 92% (TYP.)  
Output Current  
: 600mA  
Oscillation Frequency  
Maximum Duty Cycle  
Control Methods  
: 1.2MHz, 3.0MHz (+15%)  
: 100%  
: PWM (XC9235)  
PWM/PFM Auto (XC9236)  
PWM/PFM Manual (XC9237)  
■TYPICAL APPLICATION CIRCUIT  
Soft-Start Circuit Built-In  
Current Limiter Circuit Built-In (Constant Current & Latching)  
Low ESR Ceramic Capacitor Compatible  
●XC9235/XC9236/XC9237  
A/B/C/E/G types (Output Voltage Fixed)  
Packages  
: SOT-25 (A/B/C types only), USP-6C  
: B/C/D/E/F/G types  
CL High Speed Discharge  
High Speed Soft Start  
: B/F/G types  
* Performance depends on external components and wiring on the PCB.  
■TYPICAL PERFORMANCE  
CHARACTERISTICS  
●Efficiency vs. Output Current（fOSC=1.2MHz, VOUT=1.8V）  
●XC9235/XC9236/XC9237  
PWM/PFM A utomatic Sw itc hing Control  
100  
D/F types (Output Voltage Externally Set)  
90  
80  
VIN= 4.2V  
70  
PWM Control  
VIN= 4.2V  
3.6V  
2.4V  
3.6V  
2.4V  
60  
50  
40  
30  
20  
10  
0
0.1  
1
10  
100  
1000  
Output Current:IOUT(mA)  
1/32  
1234567...32

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