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：80

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Xr5嘉泰姆

1.产品概述         2.产品特点Xr5嘉泰姆
3.应用范围       4.下载产品资料PDF文档 Xr5嘉泰姆
5.产品封装图                     6.电路原理图             Xr5嘉泰姆
7.功能概述       8.相关产品Xr5嘉泰姆

一,产品概述(General Description) Xr5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 Xr5嘉泰姆

applications. 100%duty cycle provides low dropout operation, extending battery Xr5嘉泰姆

life in portable electrical devices.The internally fixed 1.5MHz operating frequencyXr5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.Xr5嘉泰姆

The CXSD62125 CXSD62125A is available in SOT-23-5/TSOT-23-5A packages.Xr5嘉泰姆
二.产品特点(Features)Xr5嘉泰姆
1A Output CurrentXr5嘉泰姆
Wide 2.7V~6.0V Input VoltageXr5嘉泰姆
Fixed 1.5MHz Switching FrequencyXr5嘉泰姆
Low Dropout Operating at 100% Duty CycleXr5嘉泰姆
25μA Quiescent CurrentXr5嘉泰姆
Integrate Synchronous RectifierXr5嘉泰姆
0.6V Reference VoltageXr5嘉泰姆
Current-Mode Operation with InternalXr5嘉泰姆
CompensationXr5嘉泰姆
- Stable with Ceramic Output CapacitorsXr5嘉泰姆
- Fast Line Transient ResponseXr5嘉泰姆
Short-Circuit ProtectionXr5嘉泰姆
Over-Temperature Protection with HysteresisXr5嘉泰姆
Available in SOT-23-5/TSOT-23-5A PackagesXr5嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)Xr5嘉泰姆
三,应用范围 (Applications)Xr5嘉泰姆

HD STBXr5嘉泰姆

BT MouseXr5嘉泰姆
PND InstrumentXr5嘉泰姆
Portable InstrumentXr5嘉泰姆
四.下载产品资料PDF文档 Xr5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！Xr5嘉泰姆

QQ截图20160419174301.jpg Xr5嘉泰姆

五,产品封装图 (Package)Xr5嘉泰姆

Xr5嘉泰姆

六.电路原理图Xr5嘉泰姆

Xr5嘉泰姆

七,功能概述Xr5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:Xr5嘉泰姆
PD ≅ IOUT2 x (RP-FET x D+RN-FET x (1-D))Xr5嘉泰姆
The temperature rise is given by:Xr5嘉泰姆
TR = (PD)(èJA)Xr5嘉泰姆
Where PD is the power dissipated by the regulator, D isXr5嘉泰姆
duty cycle of main switchXr5嘉泰姆
D = VOUT/VINXr5嘉泰姆
The èJA is the thermal resistance from the junction of theXr5嘉泰姆
die to the ambient temperature. The junction temperature,Xr5嘉泰姆
TJ, is given by:Xr5嘉泰姆
TJ = TA + TRXr5嘉泰姆
Where TA is the ambient temperature.
Layout ConsiderationXr5嘉泰姆
For all switching power supplies, the layout is an important step in the design; especially at high peak currentsXr5嘉泰姆
and switching frequencies. If the layout is not carefully done, the regulator might show noise problems and dutyXr5嘉泰姆
cycle jitter.Xr5嘉泰姆
1. The input capacitor should be placed close to the VIN and GND. Connecting the capacitor and VIN/GND withXr5嘉泰姆
short and wide trace without any via holes for good input voltage filtering. The distance between VIN/GNDXr5嘉泰姆
to capacitor less than 2mm respectively is recommended.Xr5嘉泰姆
2. To minimize copper trace connections that can inject noise into the system, the inductor should be placedXr5嘉泰姆
as close as possible to the SW pin to minimize the noise coupling into other circuits.Xr5嘉泰姆
3. The output capacitor should be place closed to converter VOUT and GND.Xr5嘉泰姆
4. Since the feedback pin and network is a high impedance circuit the feedback network should be routedXr5嘉泰姆
away from the inductor. The feedback pin and feedback network should be shielded with a ground planeXr5嘉泰姆
or trace to minimize noise coupling into this circuit.Xr5嘉泰姆
5. A star ground connection or ground plane minimizes ground shifts and noise is recommended.Xr5嘉泰姆
八,相关产品 更多同类产品.......Xr5嘉泰姆

Switching Regulator > Buck ConverterXr5嘉泰姆
Part_No Xr5嘉泰姆	PackageXr5嘉泰姆	ArchitectuXr5嘉泰姆	No.ofXr5嘉泰姆 PWM Xr5嘉泰姆 OutpuXr5嘉泰姆	DriveXr5嘉泰姆 LoutXr5嘉泰姆 (A) Xr5嘉泰姆	Vin(V) Xr5嘉泰姆		FmaxXr5嘉泰姆 Khz Xr5嘉泰姆	Vref Xr5嘉泰姆 (V) Xr5嘉泰姆	R-Top (milohm) Xr5嘉泰姆	R-Sync (milohm) Xr5嘉泰姆	Iq (No load) (uA) Xr5嘉泰姆
Part_No Xr5嘉泰姆	PackageXr5嘉泰姆	ArchitectuXr5嘉泰姆	No.ofXr5嘉泰姆 PWM Xr5嘉泰姆 OutpuXr5嘉泰姆	DriveXr5嘉泰姆 LoutXr5嘉泰姆 (A) Xr5嘉泰姆	minXr5嘉泰姆	maxXr5嘉泰姆	FmaxXr5嘉泰姆 Khz Xr5嘉泰姆	Vref Xr5嘉泰姆 (V) Xr5嘉泰姆	R-Top (milohm) Xr5嘉泰姆	R-Sync (milohm) Xr5嘉泰姆	Iq (No load) (uA) Xr5嘉泰姆
CXSD62122Xr5嘉泰姆	TQFN5x6-28Xr5嘉泰姆	CMXr5嘉泰姆	1Xr5嘉泰姆	5Xr5嘉泰姆	4.5Xr5嘉泰姆	26Xr5嘉泰姆	380Xr5嘉泰姆	0.8Xr5嘉泰姆	50Xr5嘉泰姆	20Xr5嘉泰姆	1000Xr5嘉泰姆
CXSD62123Xr5嘉泰姆	SOP-8Xr5嘉泰姆	CMXr5嘉泰姆	1Xr5嘉泰姆	2Xr5嘉泰姆	4.5Xr5嘉泰姆	26Xr5嘉泰姆	380Xr5嘉泰姆	0.8Xr5嘉泰姆	100Xr5嘉泰姆		1000Xr5嘉泰姆
CXSD62124Xr5嘉泰姆	SOP-8PXr5嘉泰姆	CMXr5嘉泰姆	1Xr5嘉泰姆	4Xr5嘉泰姆	4.5Xr5嘉泰姆	26Xr5嘉泰姆	380Xr5嘉泰姆	0.8Xr5嘉泰姆	80Xr5嘉泰姆		1000Xr5嘉泰姆
CXSD62125Xr5嘉泰姆	SOT23-5\|TSOT23-5Xr5嘉泰姆	CMXr5嘉泰姆	1Xr5嘉泰姆	1Xr5嘉泰姆	2.7Xr5嘉泰姆	6Xr5嘉泰姆	1500Xr5嘉泰姆	0.6Xr5嘉泰姆	280Xr5嘉泰姆	250Xr5嘉泰姆	25Xr5嘉泰姆
CXSD62125AXr5嘉泰姆	SOT23-5Xr5嘉泰姆	CMXr5嘉泰姆	1Xr5嘉泰姆	1Xr5嘉泰姆	2.7Xr5嘉泰姆	6Xr5嘉泰姆	1500Xr5嘉泰姆	0.6Xr5嘉泰姆	280Xr5嘉泰姆	250Xr5嘉泰姆
CXSD62126Xr5嘉泰姆	SOP-8Xr5嘉泰姆	CMXr5嘉泰姆	1Xr5嘉泰姆	3Xr5嘉泰姆	4.3Xr5嘉泰姆	14Xr5嘉泰姆	500Xr5嘉泰姆	0.8Xr5嘉泰姆	70Xr5嘉泰姆	70Xr5嘉泰姆	500Xr5嘉泰姆
CXSD62127Xr5嘉泰姆	SOP-8PXr5嘉泰姆	CMXr5嘉泰姆	1Xr5嘉泰姆	3Xr5嘉泰姆	4.3Xr5嘉泰姆	14Xr5嘉泰姆	500Xr5嘉泰姆	0.8Xr5嘉泰姆	55Xr5嘉泰姆	45Xr5嘉泰姆	500Xr5嘉泰姆
CXSD62128BXr5嘉泰姆	TDFN3x3-10Xr5嘉泰姆			3Xr5嘉泰姆	2.6Xr5嘉泰姆	5.5Xr5嘉泰姆	2000Xr5嘉泰姆	0.8Xr5嘉泰姆	110Xr5嘉泰姆	110Xr5嘉泰姆	460Xr5嘉泰姆
CXSD62129Xr5嘉泰姆	TDFN3x3-10Xr5嘉泰姆	CMXr5嘉泰姆	2Xr5嘉泰姆	1Xr5嘉泰姆	2.7Xr5嘉泰姆	6Xr5嘉泰姆	1500Xr5嘉泰姆	0.6Xr5嘉泰姆	280Xr5嘉泰姆	250Xr5嘉泰姆	500Xr5嘉泰姆
CXSD62129AXr5嘉泰姆	TDFN3x3-10Xr5嘉泰姆	CMXr5嘉泰姆	2Xr5嘉泰姆	1Xr5嘉泰姆	2.7Xr5嘉泰姆	6Xr5嘉泰姆	1500Xr5嘉泰姆	0.6Xr5嘉泰姆	280Xr5嘉泰姆	250Xr5嘉泰姆
CXSD62130Xr5嘉泰姆	TDFN2x2-6Xr5嘉泰姆	CMXr5嘉泰姆	1Xr5嘉泰姆	1Xr5嘉泰姆	2.7Xr5嘉泰姆	6Xr5嘉泰姆	1500Xr5嘉泰姆	0.6Xr5嘉泰姆	280Xr5嘉泰姆	250Xr5嘉泰姆	25Xr5嘉泰姆
CXSD62130AXr5嘉泰姆	TDFN2x2-6Xr5嘉泰姆	CMXr5嘉泰姆	1Xr5嘉泰姆	1Xr5嘉泰姆	2.7Xr5嘉泰姆	6Xr5嘉泰姆	1500Xr5嘉泰姆	0.6Xr5嘉泰姆	280Xr5嘉泰姆	250Xr5嘉泰姆
CXSD62131Xr5嘉泰姆	TDFN3x3-12Xr5嘉泰姆	CMXr5嘉泰姆	2Xr5嘉泰姆	1Xr5嘉泰姆	2.7Xr5嘉泰姆	6Xr5嘉泰姆	1500Xr5嘉泰姆	0.6Xr5嘉泰姆	280Xr5嘉泰姆	250Xr5嘉泰姆	25Xr5嘉泰姆
CXSD62131AXr5嘉泰姆	TDFN3x3-12Xr5嘉泰姆	CMXr5嘉泰姆	2Xr5嘉泰姆	1Xr5嘉泰姆	2.7Xr5嘉泰姆	6Xr5嘉泰姆	1500Xr5嘉泰姆	0.6Xr5嘉泰姆	280Xr5嘉泰姆	250Xr5嘉泰姆
CXSD62131CXr5嘉泰姆	TDFN 3x3 12Xr5嘉泰姆	CMXr5嘉泰姆	2Xr5嘉泰姆	1Xr5嘉泰姆	3Xr5嘉泰姆	5.5Xr5嘉泰姆	1500Xr5嘉泰姆	0.6Xr5嘉泰姆	280Xr5嘉泰姆	250Xr5嘉泰姆	30Xr5嘉泰姆
CXSD62132Xr5嘉泰姆	TQFN3x3-20Xr5嘉泰姆	CMXr5嘉泰姆	3Xr5嘉泰姆	2Xr5嘉泰姆	2.9Xr5嘉泰姆	5.5Xr5嘉泰姆	1500Xr5嘉泰姆	0.6Xr5嘉泰姆	-Xr5嘉泰姆	-Xr5嘉泰姆	300Xr5嘉泰姆
CXSD62133Xr5嘉泰姆	TDFN2x2-8Xr5嘉泰姆	CMXr5嘉泰姆	1Xr5嘉泰姆	1Xr5嘉泰姆	3.3Xr5嘉泰姆	8Xr5嘉泰姆	1500Xr5嘉泰姆	0.6Xr5嘉泰姆	280Xr5嘉泰姆	250Xr5嘉泰姆	25Xr5嘉泰姆
CXSD62134Xr5嘉泰姆	SOP-8Xr5嘉泰姆	CMXr5嘉泰姆	1Xr5嘉泰姆	2Xr5嘉泰姆	4.5Xr5嘉泰姆	24Xr5嘉泰姆	340Xr5嘉泰姆	0.925Xr5嘉泰姆	110Xr5嘉泰姆	110Xr5嘉泰姆	1900Xr5嘉泰姆
CXSD62135Xr5嘉泰姆	SOP-8PXr5嘉泰姆	CMXr5嘉泰姆	1Xr5嘉泰姆	3Xr5嘉泰姆	4.5Xr5嘉泰姆	24Xr5嘉泰姆	340Xr5嘉泰姆	0.925Xr5嘉泰姆	110Xr5嘉泰姆	110Xr5嘉泰姆	1900Xr5嘉泰姆
CXSD62136Xr5嘉泰姆	SOP-8Xr5嘉泰姆	CMXr5嘉泰姆	1Xr5嘉泰姆	2Xr5嘉泰姆	4.5Xr5嘉泰姆	24Xr5嘉泰姆	340Xr5嘉泰姆	0.92Xr5嘉泰姆	130Xr5嘉泰姆	130Xr5嘉泰姆	1900Xr5嘉泰姆
Xr5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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