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：154

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dUG嘉泰姆

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

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

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

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

The CXSD62125 CXSD62125A is available in SOT-23-5/TSOT-23-5A packages.dUG嘉泰姆
二.产品特点(Features)dUG嘉泰姆
1A Output CurrentdUG嘉泰姆
Wide 2.7V~6.0V Input VoltagedUG嘉泰姆
Fixed 1.5MHz Switching FrequencydUG嘉泰姆
Low Dropout Operating at 100% Duty CycledUG嘉泰姆
25μA Quiescent CurrentdUG嘉泰姆
Integrate Synchronous RectifierdUG嘉泰姆
0.6V Reference VoltagedUG嘉泰姆
Current-Mode Operation with InternaldUG嘉泰姆
CompensationdUG嘉泰姆
- Stable with Ceramic Output CapacitorsdUG嘉泰姆
- Fast Line Transient ResponsedUG嘉泰姆
Short-Circuit ProtectiondUG嘉泰姆
Over-Temperature Protection with HysteresisdUG嘉泰姆
Available in SOT-23-5/TSOT-23-5A PackagesdUG嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)dUG嘉泰姆
三,应用范围 (Applications)dUG嘉泰姆

HD STBdUG嘉泰姆

BT MousedUG嘉泰姆
PND InstrumentdUG嘉泰姆
Portable InstrumentdUG嘉泰姆
四.下载产品资料PDF文档 dUG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！dUG嘉泰姆

QQ截图20160419174301.jpg dUG嘉泰姆

五,产品封装图 (Package)dUG嘉泰姆

dUG嘉泰姆

六.电路原理图dUG嘉泰姆

dUG嘉泰姆

七,功能概述dUG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:dUG嘉泰姆
PD ≅ IOUT2 x (RP-FET x D+RN-FET x (1-D))dUG嘉泰姆
The temperature rise is given by:dUG嘉泰姆
TR = (PD)(èJA)dUG嘉泰姆
Where PD is the power dissipated by the regulator, D isdUG嘉泰姆
duty cycle of main switchdUG嘉泰姆
D = VOUT/VINdUG嘉泰姆
The èJA is the thermal resistance from the junction of thedUG嘉泰姆
die to the ambient temperature. The junction temperature,dUG嘉泰姆
TJ, is given by:dUG嘉泰姆
TJ = TA + TRdUG嘉泰姆
Where TA is the ambient temperature.
Layout ConsiderationdUG嘉泰姆
For all switching power supplies, the layout is an important step in the design; especially at high peak currentsdUG嘉泰姆
and switching frequencies. If the layout is not carefully done, the regulator might show noise problems and dutydUG嘉泰姆
cycle jitter.dUG嘉泰姆
1. The input capacitor should be placed close to the VIN and GND. Connecting the capacitor and VIN/GND withdUG嘉泰姆
short and wide trace without any via holes for good input voltage filtering. The distance between VIN/GNDdUG嘉泰姆
to capacitor less than 2mm respectively is recommended.dUG嘉泰姆
2. To minimize copper trace connections that can inject noise into the system, the inductor should be placeddUG嘉泰姆
as close as possible to the SW pin to minimize the noise coupling into other circuits.dUG嘉泰姆
3. The output capacitor should be place closed to converter VOUT and GND.dUG嘉泰姆
4. Since the feedback pin and network is a high impedance circuit the feedback network should be routeddUG嘉泰姆
away from the inductor. The feedback pin and feedback network should be shielded with a ground planedUG嘉泰姆
or trace to minimize noise coupling into this circuit.dUG嘉泰姆
5. A star ground connection or ground plane minimizes ground shifts and noise is recommended.dUG嘉泰姆
八,相关产品 更多同类产品.......dUG嘉泰姆

Switching Regulator > Buck ConverterdUG嘉泰姆
Part_No dUG嘉泰姆	PackagedUG嘉泰姆	ArchitectudUG嘉泰姆	No.ofdUG嘉泰姆 PWM dUG嘉泰姆 OutpudUG嘉泰姆	DrivedUG嘉泰姆 LoutdUG嘉泰姆 (A) dUG嘉泰姆	Vin(V) dUG嘉泰姆		FmaxdUG嘉泰姆 Khz dUG嘉泰姆	Vref dUG嘉泰姆 (V) dUG嘉泰姆	R-Top (milohm) dUG嘉泰姆	R-Sync (milohm) dUG嘉泰姆	Iq (No load) (uA) dUG嘉泰姆
Part_No dUG嘉泰姆	PackagedUG嘉泰姆	ArchitectudUG嘉泰姆	No.ofdUG嘉泰姆 PWM dUG嘉泰姆 OutpudUG嘉泰姆	DrivedUG嘉泰姆 LoutdUG嘉泰姆 (A) dUG嘉泰姆	mindUG嘉泰姆	maxdUG嘉泰姆	FmaxdUG嘉泰姆 Khz dUG嘉泰姆	Vref dUG嘉泰姆 (V) dUG嘉泰姆	R-Top (milohm) dUG嘉泰姆	R-Sync (milohm) dUG嘉泰姆	Iq (No load) (uA) dUG嘉泰姆
CXSD62122dUG嘉泰姆	TQFN5x6-28dUG嘉泰姆	CMdUG嘉泰姆	1dUG嘉泰姆	5dUG嘉泰姆	4.5dUG嘉泰姆	26dUG嘉泰姆	380dUG嘉泰姆	0.8dUG嘉泰姆	50dUG嘉泰姆	20dUG嘉泰姆	1000dUG嘉泰姆
CXSD62123dUG嘉泰姆	SOP-8dUG嘉泰姆	CMdUG嘉泰姆	1dUG嘉泰姆	2dUG嘉泰姆	4.5dUG嘉泰姆	26dUG嘉泰姆	380dUG嘉泰姆	0.8dUG嘉泰姆	100dUG嘉泰姆		1000dUG嘉泰姆
CXSD62124dUG嘉泰姆	SOP-8PdUG嘉泰姆	CMdUG嘉泰姆	1dUG嘉泰姆	4dUG嘉泰姆	4.5dUG嘉泰姆	26dUG嘉泰姆	380dUG嘉泰姆	0.8dUG嘉泰姆	80dUG嘉泰姆		1000dUG嘉泰姆
CXSD62125dUG嘉泰姆	SOT23-5\|TSOT23-5dUG嘉泰姆	CMdUG嘉泰姆	1dUG嘉泰姆	1dUG嘉泰姆	2.7dUG嘉泰姆	6dUG嘉泰姆	1500dUG嘉泰姆	0.6dUG嘉泰姆	280dUG嘉泰姆	250dUG嘉泰姆	25dUG嘉泰姆
CXSD62125AdUG嘉泰姆	SOT23-5dUG嘉泰姆	CMdUG嘉泰姆	1dUG嘉泰姆	1dUG嘉泰姆	2.7dUG嘉泰姆	6dUG嘉泰姆	1500dUG嘉泰姆	0.6dUG嘉泰姆	280dUG嘉泰姆	250dUG嘉泰姆
CXSD62126dUG嘉泰姆	SOP-8dUG嘉泰姆	CMdUG嘉泰姆	1dUG嘉泰姆	3dUG嘉泰姆	4.3dUG嘉泰姆	14dUG嘉泰姆	500dUG嘉泰姆	0.8dUG嘉泰姆	70dUG嘉泰姆	70dUG嘉泰姆	500dUG嘉泰姆
CXSD62127dUG嘉泰姆	SOP-8PdUG嘉泰姆	CMdUG嘉泰姆	1dUG嘉泰姆	3dUG嘉泰姆	4.3dUG嘉泰姆	14dUG嘉泰姆	500dUG嘉泰姆	0.8dUG嘉泰姆	55dUG嘉泰姆	45dUG嘉泰姆	500dUG嘉泰姆
CXSD62128BdUG嘉泰姆	TDFN3x3-10dUG嘉泰姆			3dUG嘉泰姆	2.6dUG嘉泰姆	5.5dUG嘉泰姆	2000dUG嘉泰姆	0.8dUG嘉泰姆	110dUG嘉泰姆	110dUG嘉泰姆	460dUG嘉泰姆
CXSD62129dUG嘉泰姆	TDFN3x3-10dUG嘉泰姆	CMdUG嘉泰姆	2dUG嘉泰姆	1dUG嘉泰姆	2.7dUG嘉泰姆	6dUG嘉泰姆	1500dUG嘉泰姆	0.6dUG嘉泰姆	280dUG嘉泰姆	250dUG嘉泰姆	500dUG嘉泰姆
CXSD62129AdUG嘉泰姆	TDFN3x3-10dUG嘉泰姆	CMdUG嘉泰姆	2dUG嘉泰姆	1dUG嘉泰姆	2.7dUG嘉泰姆	6dUG嘉泰姆	1500dUG嘉泰姆	0.6dUG嘉泰姆	280dUG嘉泰姆	250dUG嘉泰姆
CXSD62130dUG嘉泰姆	TDFN2x2-6dUG嘉泰姆	CMdUG嘉泰姆	1dUG嘉泰姆	1dUG嘉泰姆	2.7dUG嘉泰姆	6dUG嘉泰姆	1500dUG嘉泰姆	0.6dUG嘉泰姆	280dUG嘉泰姆	250dUG嘉泰姆	25dUG嘉泰姆
CXSD62130AdUG嘉泰姆	TDFN2x2-6dUG嘉泰姆	CMdUG嘉泰姆	1dUG嘉泰姆	1dUG嘉泰姆	2.7dUG嘉泰姆	6dUG嘉泰姆	1500dUG嘉泰姆	0.6dUG嘉泰姆	280dUG嘉泰姆	250dUG嘉泰姆
CXSD62131dUG嘉泰姆	TDFN3x3-12dUG嘉泰姆	CMdUG嘉泰姆	2dUG嘉泰姆	1dUG嘉泰姆	2.7dUG嘉泰姆	6dUG嘉泰姆	1500dUG嘉泰姆	0.6dUG嘉泰姆	280dUG嘉泰姆	250dUG嘉泰姆	25dUG嘉泰姆
CXSD62131AdUG嘉泰姆	TDFN3x3-12dUG嘉泰姆	CMdUG嘉泰姆	2dUG嘉泰姆	1dUG嘉泰姆	2.7dUG嘉泰姆	6dUG嘉泰姆	1500dUG嘉泰姆	0.6dUG嘉泰姆	280dUG嘉泰姆	250dUG嘉泰姆
CXSD62131CdUG嘉泰姆	TDFN 3x3 12dUG嘉泰姆	CMdUG嘉泰姆	2dUG嘉泰姆	1dUG嘉泰姆	3dUG嘉泰姆	5.5dUG嘉泰姆	1500dUG嘉泰姆	0.6dUG嘉泰姆	280dUG嘉泰姆	250dUG嘉泰姆	30dUG嘉泰姆
CXSD62132dUG嘉泰姆	TQFN3x3-20dUG嘉泰姆	CMdUG嘉泰姆	3dUG嘉泰姆	2dUG嘉泰姆	2.9dUG嘉泰姆	5.5dUG嘉泰姆	1500dUG嘉泰姆	0.6dUG嘉泰姆	-dUG嘉泰姆	-dUG嘉泰姆	300dUG嘉泰姆
CXSD62133dUG嘉泰姆	TDFN2x2-8dUG嘉泰姆	CMdUG嘉泰姆	1dUG嘉泰姆	1dUG嘉泰姆	3.3dUG嘉泰姆	8dUG嘉泰姆	1500dUG嘉泰姆	0.6dUG嘉泰姆	280dUG嘉泰姆	250dUG嘉泰姆	25dUG嘉泰姆
CXSD62134dUG嘉泰姆	SOP-8dUG嘉泰姆	CMdUG嘉泰姆	1dUG嘉泰姆	2dUG嘉泰姆	4.5dUG嘉泰姆	24dUG嘉泰姆	340dUG嘉泰姆	0.925dUG嘉泰姆	110dUG嘉泰姆	110dUG嘉泰姆	1900dUG嘉泰姆
CXSD62135dUG嘉泰姆	SOP-8PdUG嘉泰姆	CMdUG嘉泰姆	1dUG嘉泰姆	3dUG嘉泰姆	4.5dUG嘉泰姆	24dUG嘉泰姆	340dUG嘉泰姆	0.925dUG嘉泰姆	110dUG嘉泰姆	110dUG嘉泰姆	1900dUG嘉泰姆
CXSD62136dUG嘉泰姆	SOP-8dUG嘉泰姆	CMdUG嘉泰姆	1dUG嘉泰姆	2dUG嘉泰姆	4.5dUG嘉泰姆	24dUG嘉泰姆	340dUG嘉泰姆	0.92dUG嘉泰姆	130dUG嘉泰姆	130dUG嘉泰姆	1900dUG嘉泰姆
dUG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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