100%占空比提供低损耗CXSD62125A同步降压稳压器输入电压从2.7V到6.0V

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发表时间：2020-04-25浏览次数：62

100%占空比提供低损耗CXSD62125A同步降压稳压器输入电压从2.7V到6.0V

目录CEf嘉泰姆

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

一,产品概述(General Description) CEf嘉泰姆
CXSD62125 CXSD62125A is a 1.5MHz high efficiency monolithic synchronous buck regulator.Design with current mode scheme,the CXSD62125 CXSD62125A is stable with ceramic output capacitor. Input voltage from 2.7V to 6.0V makes the CXSD62125 CXSD62125A ideally suited for single Li-Ion battery powered CEf嘉泰姆

applications. 100%duty cycle provides low dropout operation, extending battery CEf嘉泰姆

life in portable electrical devices.The internally fixed 1.5MHz operating frequencyCEf嘉泰姆

allows the using of small surface mount inductors and capacitors. The synchronous switches included inside increase the efficiency and eliminate the need of an external Schottky diode.CEf嘉泰姆

The CXSD62125 CXSD62125A is available in SOT-23-5/TSOT-23-5A packages.CEf嘉泰姆
二.产品特点(Features)CEf嘉泰姆
1A Output CurrentCEf嘉泰姆
Wide 2.7V~6.0V Input VoltageCEf嘉泰姆
Fixed 1.5MHz Switching FrequencyCEf嘉泰姆
Low Dropout Operating at 100% Duty CycleCEf嘉泰姆
25μA Quiescent CurrentCEf嘉泰姆
Integrate Synchronous RectifierCEf嘉泰姆
0.6V Reference VoltageCEf嘉泰姆
Current-Mode Operation with InternalCEf嘉泰姆
CompensationCEf嘉泰姆
- Stable with Ceramic Output CapacitorsCEf嘉泰姆
- Fast Line Transient ResponseCEf嘉泰姆
Short-Circuit ProtectionCEf嘉泰姆
Over-Temperature Protection with HysteresisCEf嘉泰姆
Available in SOT-23-5/TSOT-23-5A PackagesCEf嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)CEf嘉泰姆
三,应用范围 (Applications)CEf嘉泰姆

HD STBCEf嘉泰姆

BT MouseCEf嘉泰姆
PND InstrumentCEf嘉泰姆
Portable InstrumentCEf嘉泰姆
四.下载产品资料PDF文档 CEf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！CEf嘉泰姆

QQ截图20160419174301.jpg CEf嘉泰姆

五,产品封装图 (Package)CEf嘉泰姆

CEf嘉泰姆

六.电路原理图CEf嘉泰姆

CEf嘉泰姆

七,功能概述CEf嘉泰姆

In most applications, the CXSD62125 CXSD62125A does not dissipate much heat due to its high efficiency. But, in applications where the CXSD62125 CXSD62125A is running at high ambient tempera ture with low supply voltage and high duty cycles, the heat dissipated may exceed the maximum junction temperature of the part. If the junction temperature reaches ap-proximately 150°C, both power switches will be turned off and the SW node will become high impedance.To avoid the CXSD62125 CXSD62125A from exceeding the maximum junction temperature, the user will need to do some thermal analysis. The goal of the thermal analysis is to determine whether the power dissipated exceeds the maxi-mum junction temperature of the part. The power dissipated by the part is approximated:CEf嘉泰姆
PD ≅ IOUT2 x (RP-FET x D+RN-FET x (1-D))CEf嘉泰姆
The temperature rise is given by:CEf嘉泰姆
TR = (PD)(èJA)CEf嘉泰姆
Where PD is the power dissipated by the regulator, D isCEf嘉泰姆
duty cycle of main switchCEf嘉泰姆
D = VOUT/VINCEf嘉泰姆
The èJA is the thermal resistance from the junction of theCEf嘉泰姆
die to the ambient temperature. The junction temperature,CEf嘉泰姆
TJ, is given by:CEf嘉泰姆
TJ = TA + TRCEf嘉泰姆
Where TA is the ambient temperature.
Layout ConsiderationCEf嘉泰姆
For all switching power supplies, the layout is an important step in the design; especially at high peak currentsCEf嘉泰姆
and switching frequencies. If the layout is not carefully done, the regulator might show noise problems and dutyCEf嘉泰姆
cycle jitter.CEf嘉泰姆
1. The input capacitor should be placed close to the VIN and GND. Connecting the capacitor and VIN/GND withCEf嘉泰姆
short and wide trace without any via holes for good input voltage filtering. The distance between VIN/GNDCEf嘉泰姆
to capacitor less than 2mm respectively is recommended.CEf嘉泰姆
2. To minimize copper trace connections that can inject noise into the system, the inductor should be placedCEf嘉泰姆
as close as possible to the SW pin to minimize the noise coupling into other circuits.CEf嘉泰姆
3. The output capacitor should be place closed to converter VOUT and GND.CEf嘉泰姆
4. Since the feedback pin and network is a high impedance circuit the feedback network should be routedCEf嘉泰姆
away from the inductor. The feedback pin and feedback network should be shielded with a ground planeCEf嘉泰姆
or trace to minimize noise coupling into this circuit.CEf嘉泰姆
5. A star ground connection or ground plane minimizes ground shifts and noise is recommended.CEf嘉泰姆
八,相关产品 更多同类产品.......CEf嘉泰姆

Switching Regulator > Buck ConverterCEf嘉泰姆
Part_No CEf嘉泰姆	PackageCEf嘉泰姆	ArchitectuCEf嘉泰姆	No.ofCEf嘉泰姆 PWM CEf嘉泰姆 OutpuCEf嘉泰姆	DriveCEf嘉泰姆 LoutCEf嘉泰姆 (A) CEf嘉泰姆	Vin(V) CEf嘉泰姆		FmaxCEf嘉泰姆 Khz CEf嘉泰姆	Vref CEf嘉泰姆 (V) CEf嘉泰姆	R-Top (milohm) CEf嘉泰姆	R-Sync (milohm) CEf嘉泰姆	Iq (No load) (uA) CEf嘉泰姆
Part_No CEf嘉泰姆	PackageCEf嘉泰姆	ArchitectuCEf嘉泰姆	No.ofCEf嘉泰姆 PWM CEf嘉泰姆 OutpuCEf嘉泰姆	DriveCEf嘉泰姆 LoutCEf嘉泰姆 (A) CEf嘉泰姆	minCEf嘉泰姆	maxCEf嘉泰姆	FmaxCEf嘉泰姆 Khz CEf嘉泰姆	Vref CEf嘉泰姆 (V) CEf嘉泰姆	R-Top (milohm) CEf嘉泰姆	R-Sync (milohm) CEf嘉泰姆	Iq (No load) (uA) CEf嘉泰姆
CXSD62122CEf嘉泰姆	TQFN5x6-28CEf嘉泰姆	CMCEf嘉泰姆	1CEf嘉泰姆	5CEf嘉泰姆	4.5CEf嘉泰姆	26CEf嘉泰姆	380CEf嘉泰姆	0.8CEf嘉泰姆	50CEf嘉泰姆	20CEf嘉泰姆	1000CEf嘉泰姆
CXSD62123CEf嘉泰姆	SOP-8CEf嘉泰姆	CMCEf嘉泰姆	1CEf嘉泰姆	2CEf嘉泰姆	4.5CEf嘉泰姆	26CEf嘉泰姆	380CEf嘉泰姆	0.8CEf嘉泰姆	100CEf嘉泰姆		1000CEf嘉泰姆
CXSD62124CEf嘉泰姆	SOP-8PCEf嘉泰姆	CMCEf嘉泰姆	1CEf嘉泰姆	4CEf嘉泰姆	4.5CEf嘉泰姆	26CEf嘉泰姆	380CEf嘉泰姆	0.8CEf嘉泰姆	80CEf嘉泰姆		1000CEf嘉泰姆
CXSD62125CEf嘉泰姆	SOT23-5\|TSOT23-5CEf嘉泰姆	CMCEf嘉泰姆	1CEf嘉泰姆	1CEf嘉泰姆	2.7CEf嘉泰姆	6CEf嘉泰姆	1500CEf嘉泰姆	0.6CEf嘉泰姆	280CEf嘉泰姆	250CEf嘉泰姆	25CEf嘉泰姆
CXSD62125ACEf嘉泰姆	SOT23-5CEf嘉泰姆	CMCEf嘉泰姆	1CEf嘉泰姆	1CEf嘉泰姆	2.7CEf嘉泰姆	6CEf嘉泰姆	1500CEf嘉泰姆	0.6CEf嘉泰姆	280CEf嘉泰姆	250CEf嘉泰姆
CXSD62126CEf嘉泰姆	SOP-8CEf嘉泰姆	CMCEf嘉泰姆	1CEf嘉泰姆	3CEf嘉泰姆	4.3CEf嘉泰姆	14CEf嘉泰姆	500CEf嘉泰姆	0.8CEf嘉泰姆	70CEf嘉泰姆	70CEf嘉泰姆	500CEf嘉泰姆
CXSD62127CEf嘉泰姆	SOP-8PCEf嘉泰姆	CMCEf嘉泰姆	1CEf嘉泰姆	3CEf嘉泰姆	4.3CEf嘉泰姆	14CEf嘉泰姆	500CEf嘉泰姆	0.8CEf嘉泰姆	55CEf嘉泰姆	45CEf嘉泰姆	500CEf嘉泰姆
CXSD62128BCEf嘉泰姆	TDFN3x3-10CEf嘉泰姆			3CEf嘉泰姆	2.6CEf嘉泰姆	5.5CEf嘉泰姆	2000CEf嘉泰姆	0.8CEf嘉泰姆	110CEf嘉泰姆	110CEf嘉泰姆	460CEf嘉泰姆
CXSD62129CEf嘉泰姆	TDFN3x3-10CEf嘉泰姆	CMCEf嘉泰姆	2CEf嘉泰姆	1CEf嘉泰姆	2.7CEf嘉泰姆	6CEf嘉泰姆	1500CEf嘉泰姆	0.6CEf嘉泰姆	280CEf嘉泰姆	250CEf嘉泰姆	500CEf嘉泰姆
CXSD62129ACEf嘉泰姆	TDFN3x3-10CEf嘉泰姆	CMCEf嘉泰姆	2CEf嘉泰姆	1CEf嘉泰姆	2.7CEf嘉泰姆	6CEf嘉泰姆	1500CEf嘉泰姆	0.6CEf嘉泰姆	280CEf嘉泰姆	250CEf嘉泰姆
CXSD62130CEf嘉泰姆	TDFN2x2-6CEf嘉泰姆	CMCEf嘉泰姆	1CEf嘉泰姆	1CEf嘉泰姆	2.7CEf嘉泰姆	6CEf嘉泰姆	1500CEf嘉泰姆	0.6CEf嘉泰姆	280CEf嘉泰姆	250CEf嘉泰姆	25CEf嘉泰姆
CXSD62130ACEf嘉泰姆	TDFN2x2-6CEf嘉泰姆	CMCEf嘉泰姆	1CEf嘉泰姆	1CEf嘉泰姆	2.7CEf嘉泰姆	6CEf嘉泰姆	1500CEf嘉泰姆	0.6CEf嘉泰姆	280CEf嘉泰姆	250CEf嘉泰姆
CXSD62131CEf嘉泰姆	TDFN3x3-12CEf嘉泰姆	CMCEf嘉泰姆	2CEf嘉泰姆	1CEf嘉泰姆	2.7CEf嘉泰姆	6CEf嘉泰姆	1500CEf嘉泰姆	0.6CEf嘉泰姆	280CEf嘉泰姆	250CEf嘉泰姆	25CEf嘉泰姆
CXSD62131ACEf嘉泰姆	TDFN3x3-12CEf嘉泰姆	CMCEf嘉泰姆	2CEf嘉泰姆	1CEf嘉泰姆	2.7CEf嘉泰姆	6CEf嘉泰姆	1500CEf嘉泰姆	0.6CEf嘉泰姆	280CEf嘉泰姆	250CEf嘉泰姆
CXSD62131CCEf嘉泰姆	TDFN 3x3 12CEf嘉泰姆	CMCEf嘉泰姆	2CEf嘉泰姆	1CEf嘉泰姆	3CEf嘉泰姆	5.5CEf嘉泰姆	1500CEf嘉泰姆	0.6CEf嘉泰姆	280CEf嘉泰姆	250CEf嘉泰姆	30CEf嘉泰姆
CXSD62132CEf嘉泰姆	TQFN3x3-20CEf嘉泰姆	CMCEf嘉泰姆	3CEf嘉泰姆	2CEf嘉泰姆	2.9CEf嘉泰姆	5.5CEf嘉泰姆	1500CEf嘉泰姆	0.6CEf嘉泰姆	-CEf嘉泰姆	-CEf嘉泰姆	300CEf嘉泰姆
CXSD62133CEf嘉泰姆	TDFN2x2-8CEf嘉泰姆	CMCEf嘉泰姆	1CEf嘉泰姆	1CEf嘉泰姆	3.3CEf嘉泰姆	8CEf嘉泰姆	1500CEf嘉泰姆	0.6CEf嘉泰姆	280CEf嘉泰姆	250CEf嘉泰姆	25CEf嘉泰姆
CXSD62134CEf嘉泰姆	SOP-8CEf嘉泰姆	CMCEf嘉泰姆	1CEf嘉泰姆	2CEf嘉泰姆	4.5CEf嘉泰姆	24CEf嘉泰姆	340CEf嘉泰姆	0.925CEf嘉泰姆	110CEf嘉泰姆	110CEf嘉泰姆	1900CEf嘉泰姆
CXSD62135CEf嘉泰姆	SOP-8PCEf嘉泰姆	CMCEf嘉泰姆	1CEf嘉泰姆	3CEf嘉泰姆	4.5CEf嘉泰姆	24CEf嘉泰姆	340CEf嘉泰姆	0.925CEf嘉泰姆	110CEf嘉泰姆	110CEf嘉泰姆	1900CEf嘉泰姆
CXSD62136CEf嘉泰姆	SOP-8CEf嘉泰姆	CMCEf嘉泰姆	1CEf嘉泰姆	2CEf嘉泰姆	4.5CEf嘉泰姆	24CEf嘉泰姆	340CEf嘉泰姆	0.92CEf嘉泰姆	130CEf嘉泰姆	130CEf嘉泰姆	1900CEf嘉泰姆
CEf嘉泰姆

上一篇：CXSD62125 1.5MHz高效单片同步降压稳压器电流模式设计陶瓷输出电容稳定单锂离子电池供电

下一篇：70mΩ功率MOSFETs的3A同步整流Buck变换器CXSD62126电流模式控制方案4.3V宽输入电压转换为14V

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