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

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发表时间：2020-04-25浏览次数：150

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

目录D8j嘉泰姆

1.产品概述         2.产品特点D8j嘉泰姆
3.应用范围       4.下载产品资料PDF文档 D8j嘉泰姆
5.产品封装图                     6.电路原理图             D8j嘉泰姆
7.功能概述       8.相关产品D8j嘉泰姆

一,产品概述(General Description) D8j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 D8j嘉泰姆

applications. 100%duty cycle provides low dropout operation, extending battery D8j嘉泰姆

life in portable electrical devices.The internally fixed 1.5MHz operating frequencyD8j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.D8j嘉泰姆

The CXSD62125 CXSD62125A is available in SOT-23-5/TSOT-23-5A packages.D8j嘉泰姆
二.产品特点(Features)D8j嘉泰姆
1A Output CurrentD8j嘉泰姆
Wide 2.7V~6.0V Input VoltageD8j嘉泰姆
Fixed 1.5MHz Switching FrequencyD8j嘉泰姆
Low Dropout Operating at 100% Duty CycleD8j嘉泰姆
25μA Quiescent CurrentD8j嘉泰姆
Integrate Synchronous RectifierD8j嘉泰姆
0.6V Reference VoltageD8j嘉泰姆
Current-Mode Operation with InternalD8j嘉泰姆
CompensationD8j嘉泰姆
- Stable with Ceramic Output CapacitorsD8j嘉泰姆
- Fast Line Transient ResponseD8j嘉泰姆
Short-Circuit ProtectionD8j嘉泰姆
Over-Temperature Protection with HysteresisD8j嘉泰姆
Available in SOT-23-5/TSOT-23-5A PackagesD8j嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)D8j嘉泰姆
三,应用范围 (Applications)D8j嘉泰姆

HD STBD8j嘉泰姆

BT MouseD8j嘉泰姆
PND InstrumentD8j嘉泰姆
Portable InstrumentD8j嘉泰姆
四.下载产品资料PDF文档 D8j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！D8j嘉泰姆

QQ截图20160419174301.jpg D8j嘉泰姆

五,产品封装图 (Package)D8j嘉泰姆

D8j嘉泰姆

六.电路原理图D8j嘉泰姆

D8j嘉泰姆

七,功能概述D8j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:D8j嘉泰姆
PD ≅ IOUT2 x (RP-FET x D+RN-FET x (1-D))D8j嘉泰姆
The temperature rise is given by:D8j嘉泰姆
TR = (PD)(èJA)D8j嘉泰姆
Where PD is the power dissipated by the regulator, D isD8j嘉泰姆
duty cycle of main switchD8j嘉泰姆
D = VOUT/VIND8j嘉泰姆
The èJA is the thermal resistance from the junction of theD8j嘉泰姆
die to the ambient temperature. The junction temperature,D8j嘉泰姆
TJ, is given by:D8j嘉泰姆
TJ = TA + TRD8j嘉泰姆
Where TA is the ambient temperature.
Layout ConsiderationD8j嘉泰姆
For all switching power supplies, the layout is an important step in the design; especially at high peak currentsD8j嘉泰姆
and switching frequencies. If the layout is not carefully done, the regulator might show noise problems and dutyD8j嘉泰姆
cycle jitter.D8j嘉泰姆
1. The input capacitor should be placed close to the VIN and GND. Connecting the capacitor and VIN/GND withD8j嘉泰姆
short and wide trace without any via holes for good input voltage filtering. The distance between VIN/GNDD8j嘉泰姆
to capacitor less than 2mm respectively is recommended.D8j嘉泰姆
2. To minimize copper trace connections that can inject noise into the system, the inductor should be placedD8j嘉泰姆
as close as possible to the SW pin to minimize the noise coupling into other circuits.D8j嘉泰姆
3. The output capacitor should be place closed to converter VOUT and GND.D8j嘉泰姆
4. Since the feedback pin and network is a high impedance circuit the feedback network should be routedD8j嘉泰姆
away from the inductor. The feedback pin and feedback network should be shielded with a ground planeD8j嘉泰姆
or trace to minimize noise coupling into this circuit.D8j嘉泰姆
5. A star ground connection or ground plane minimizes ground shifts and noise is recommended.D8j嘉泰姆
八,相关产品 更多同类产品.......D8j嘉泰姆

Switching Regulator > Buck ConverterD8j嘉泰姆
Part_No D8j嘉泰姆	PackageD8j嘉泰姆	ArchitectuD8j嘉泰姆	No.ofD8j嘉泰姆 PWM D8j嘉泰姆 OutpuD8j嘉泰姆	DriveD8j嘉泰姆 LoutD8j嘉泰姆 (A) D8j嘉泰姆	Vin(V) D8j嘉泰姆		FmaxD8j嘉泰姆 Khz D8j嘉泰姆	Vref D8j嘉泰姆 (V) D8j嘉泰姆	R-Top (milohm) D8j嘉泰姆	R-Sync (milohm) D8j嘉泰姆	Iq (No load) (uA) D8j嘉泰姆
Part_No D8j嘉泰姆	PackageD8j嘉泰姆	ArchitectuD8j嘉泰姆	No.ofD8j嘉泰姆 PWM D8j嘉泰姆 OutpuD8j嘉泰姆	DriveD8j嘉泰姆 LoutD8j嘉泰姆 (A) D8j嘉泰姆	minD8j嘉泰姆	maxD8j嘉泰姆	FmaxD8j嘉泰姆 Khz D8j嘉泰姆	Vref D8j嘉泰姆 (V) D8j嘉泰姆	R-Top (milohm) D8j嘉泰姆	R-Sync (milohm) D8j嘉泰姆	Iq (No load) (uA) D8j嘉泰姆
CXSD62122D8j嘉泰姆	TQFN5x6-28D8j嘉泰姆	CMD8j嘉泰姆	1D8j嘉泰姆	5D8j嘉泰姆	4.5D8j嘉泰姆	26D8j嘉泰姆	380D8j嘉泰姆	0.8D8j嘉泰姆	50D8j嘉泰姆	20D8j嘉泰姆	1000D8j嘉泰姆
CXSD62123D8j嘉泰姆	SOP-8D8j嘉泰姆	CMD8j嘉泰姆	1D8j嘉泰姆	2D8j嘉泰姆	4.5D8j嘉泰姆	26D8j嘉泰姆	380D8j嘉泰姆	0.8D8j嘉泰姆	100D8j嘉泰姆		1000D8j嘉泰姆
CXSD62124D8j嘉泰姆	SOP-8PD8j嘉泰姆	CMD8j嘉泰姆	1D8j嘉泰姆	4D8j嘉泰姆	4.5D8j嘉泰姆	26D8j嘉泰姆	380D8j嘉泰姆	0.8D8j嘉泰姆	80D8j嘉泰姆		1000D8j嘉泰姆
CXSD62125D8j嘉泰姆	SOT23-5\|TSOT23-5D8j嘉泰姆	CMD8j嘉泰姆	1D8j嘉泰姆	1D8j嘉泰姆	2.7D8j嘉泰姆	6D8j嘉泰姆	1500D8j嘉泰姆	0.6D8j嘉泰姆	280D8j嘉泰姆	250D8j嘉泰姆	25D8j嘉泰姆
CXSD62125AD8j嘉泰姆	SOT23-5D8j嘉泰姆	CMD8j嘉泰姆	1D8j嘉泰姆	1D8j嘉泰姆	2.7D8j嘉泰姆	6D8j嘉泰姆	1500D8j嘉泰姆	0.6D8j嘉泰姆	280D8j嘉泰姆	250D8j嘉泰姆
CXSD62126D8j嘉泰姆	SOP-8D8j嘉泰姆	CMD8j嘉泰姆	1D8j嘉泰姆	3D8j嘉泰姆	4.3D8j嘉泰姆	14D8j嘉泰姆	500D8j嘉泰姆	0.8D8j嘉泰姆	70D8j嘉泰姆	70D8j嘉泰姆	500D8j嘉泰姆
CXSD62127D8j嘉泰姆	SOP-8PD8j嘉泰姆	CMD8j嘉泰姆	1D8j嘉泰姆	3D8j嘉泰姆	4.3D8j嘉泰姆	14D8j嘉泰姆	500D8j嘉泰姆	0.8D8j嘉泰姆	55D8j嘉泰姆	45D8j嘉泰姆	500D8j嘉泰姆
CXSD62128BD8j嘉泰姆	TDFN3x3-10D8j嘉泰姆			3D8j嘉泰姆	2.6D8j嘉泰姆	5.5D8j嘉泰姆	2000D8j嘉泰姆	0.8D8j嘉泰姆	110D8j嘉泰姆	110D8j嘉泰姆	460D8j嘉泰姆
CXSD62129D8j嘉泰姆	TDFN3x3-10D8j嘉泰姆	CMD8j嘉泰姆	2D8j嘉泰姆	1D8j嘉泰姆	2.7D8j嘉泰姆	6D8j嘉泰姆	1500D8j嘉泰姆	0.6D8j嘉泰姆	280D8j嘉泰姆	250D8j嘉泰姆	500D8j嘉泰姆
CXSD62129AD8j嘉泰姆	TDFN3x3-10D8j嘉泰姆	CMD8j嘉泰姆	2D8j嘉泰姆	1D8j嘉泰姆	2.7D8j嘉泰姆	6D8j嘉泰姆	1500D8j嘉泰姆	0.6D8j嘉泰姆	280D8j嘉泰姆	250D8j嘉泰姆
CXSD62130D8j嘉泰姆	TDFN2x2-6D8j嘉泰姆	CMD8j嘉泰姆	1D8j嘉泰姆	1D8j嘉泰姆	2.7D8j嘉泰姆	6D8j嘉泰姆	1500D8j嘉泰姆	0.6D8j嘉泰姆	280D8j嘉泰姆	250D8j嘉泰姆	25D8j嘉泰姆
CXSD62130AD8j嘉泰姆	TDFN2x2-6D8j嘉泰姆	CMD8j嘉泰姆	1D8j嘉泰姆	1D8j嘉泰姆	2.7D8j嘉泰姆	6D8j嘉泰姆	1500D8j嘉泰姆	0.6D8j嘉泰姆	280D8j嘉泰姆	250D8j嘉泰姆
CXSD62131D8j嘉泰姆	TDFN3x3-12D8j嘉泰姆	CMD8j嘉泰姆	2D8j嘉泰姆	1D8j嘉泰姆	2.7D8j嘉泰姆	6D8j嘉泰姆	1500D8j嘉泰姆	0.6D8j嘉泰姆	280D8j嘉泰姆	250D8j嘉泰姆	25D8j嘉泰姆
CXSD62131AD8j嘉泰姆	TDFN3x3-12D8j嘉泰姆	CMD8j嘉泰姆	2D8j嘉泰姆	1D8j嘉泰姆	2.7D8j嘉泰姆	6D8j嘉泰姆	1500D8j嘉泰姆	0.6D8j嘉泰姆	280D8j嘉泰姆	250D8j嘉泰姆
CXSD62131CD8j嘉泰姆	TDFN 3x3 12D8j嘉泰姆	CMD8j嘉泰姆	2D8j嘉泰姆	1D8j嘉泰姆	3D8j嘉泰姆	5.5D8j嘉泰姆	1500D8j嘉泰姆	0.6D8j嘉泰姆	280D8j嘉泰姆	250D8j嘉泰姆	30D8j嘉泰姆
CXSD62132D8j嘉泰姆	TQFN3x3-20D8j嘉泰姆	CMD8j嘉泰姆	3D8j嘉泰姆	2D8j嘉泰姆	2.9D8j嘉泰姆	5.5D8j嘉泰姆	1500D8j嘉泰姆	0.6D8j嘉泰姆	-D8j嘉泰姆	-D8j嘉泰姆	300D8j嘉泰姆
CXSD62133D8j嘉泰姆	TDFN2x2-8D8j嘉泰姆	CMD8j嘉泰姆	1D8j嘉泰姆	1D8j嘉泰姆	3.3D8j嘉泰姆	8D8j嘉泰姆	1500D8j嘉泰姆	0.6D8j嘉泰姆	280D8j嘉泰姆	250D8j嘉泰姆	25D8j嘉泰姆
CXSD62134D8j嘉泰姆	SOP-8D8j嘉泰姆	CMD8j嘉泰姆	1D8j嘉泰姆	2D8j嘉泰姆	4.5D8j嘉泰姆	24D8j嘉泰姆	340D8j嘉泰姆	0.925D8j嘉泰姆	110D8j嘉泰姆	110D8j嘉泰姆	1900D8j嘉泰姆
CXSD62135D8j嘉泰姆	SOP-8PD8j嘉泰姆	CMD8j嘉泰姆	1D8j嘉泰姆	3D8j嘉泰姆	4.5D8j嘉泰姆	24D8j嘉泰姆	340D8j嘉泰姆	0.925D8j嘉泰姆	110D8j嘉泰姆	110D8j嘉泰姆	1900D8j嘉泰姆
CXSD62136D8j嘉泰姆	SOP-8D8j嘉泰姆	CMD8j嘉泰姆	1D8j嘉泰姆	2D8j嘉泰姆	4.5D8j嘉泰姆	24D8j嘉泰姆	340D8j嘉泰姆	0.92D8j嘉泰姆	130D8j嘉泰姆	130D8j嘉泰姆	1900D8j嘉泰姆
D8j嘉泰姆

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下一篇：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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