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：309

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giN嘉泰姆

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

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

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

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

The CXSD62125 CXSD62125A is available in SOT-23-5/TSOT-23-5A packages.giN嘉泰姆
二.产品特点(Features)giN嘉泰姆
1A Output CurrentgiN嘉泰姆
Wide 2.7V~6.0V Input VoltagegiN嘉泰姆
Fixed 1.5MHz Switching FrequencygiN嘉泰姆
Low Dropout Operating at 100% Duty CyclegiN嘉泰姆
25μA Quiescent CurrentgiN嘉泰姆
Integrate Synchronous RectifiergiN嘉泰姆
0.6V Reference VoltagegiN嘉泰姆
Current-Mode Operation with InternalgiN嘉泰姆
CompensationgiN嘉泰姆
- Stable with Ceramic Output CapacitorsgiN嘉泰姆
- Fast Line Transient ResponsegiN嘉泰姆
Short-Circuit ProtectiongiN嘉泰姆
Over-Temperature Protection with HysteresisgiN嘉泰姆
Available in SOT-23-5/TSOT-23-5A PackagesgiN嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)giN嘉泰姆
三,应用范围 (Applications)giN嘉泰姆

HD STBgiN嘉泰姆

BT MousegiN嘉泰姆
PND InstrumentgiN嘉泰姆
Portable InstrumentgiN嘉泰姆
四.下载产品资料PDF文档 giN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！giN嘉泰姆

QQ截图20160419174301.jpg giN嘉泰姆

五,产品封装图 (Package)giN嘉泰姆

giN嘉泰姆

六.电路原理图giN嘉泰姆

giN嘉泰姆

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

Switching Regulator > Buck ConvertergiN嘉泰姆
Part_No giN嘉泰姆	PackagegiN嘉泰姆	ArchitectugiN嘉泰姆	No.ofgiN嘉泰姆 PWM giN嘉泰姆 OutpugiN嘉泰姆	DrivegiN嘉泰姆 LoutgiN嘉泰姆 (A) giN嘉泰姆	Vin(V) giN嘉泰姆		FmaxgiN嘉泰姆 Khz giN嘉泰姆	Vref giN嘉泰姆 (V) giN嘉泰姆	R-Top (milohm) giN嘉泰姆	R-Sync (milohm) giN嘉泰姆	Iq (No load) (uA) giN嘉泰姆
Part_No giN嘉泰姆	PackagegiN嘉泰姆	ArchitectugiN嘉泰姆	No.ofgiN嘉泰姆 PWM giN嘉泰姆 OutpugiN嘉泰姆	DrivegiN嘉泰姆 LoutgiN嘉泰姆 (A) giN嘉泰姆	mingiN嘉泰姆	maxgiN嘉泰姆	FmaxgiN嘉泰姆 Khz giN嘉泰姆	Vref giN嘉泰姆 (V) giN嘉泰姆	R-Top (milohm) giN嘉泰姆	R-Sync (milohm) giN嘉泰姆	Iq (No load) (uA) giN嘉泰姆
CXSD62122giN嘉泰姆	TQFN5x6-28giN嘉泰姆	CMgiN嘉泰姆	1giN嘉泰姆	5giN嘉泰姆	4.5giN嘉泰姆	26giN嘉泰姆	380giN嘉泰姆	0.8giN嘉泰姆	50giN嘉泰姆	20giN嘉泰姆	1000giN嘉泰姆
CXSD62123giN嘉泰姆	SOP-8giN嘉泰姆	CMgiN嘉泰姆	1giN嘉泰姆	2giN嘉泰姆	4.5giN嘉泰姆	26giN嘉泰姆	380giN嘉泰姆	0.8giN嘉泰姆	100giN嘉泰姆		1000giN嘉泰姆
CXSD62124giN嘉泰姆	SOP-8PgiN嘉泰姆	CMgiN嘉泰姆	1giN嘉泰姆	4giN嘉泰姆	4.5giN嘉泰姆	26giN嘉泰姆	380giN嘉泰姆	0.8giN嘉泰姆	80giN嘉泰姆		1000giN嘉泰姆
CXSD62125giN嘉泰姆	SOT23-5\|TSOT23-5giN嘉泰姆	CMgiN嘉泰姆	1giN嘉泰姆	1giN嘉泰姆	2.7giN嘉泰姆	6giN嘉泰姆	1500giN嘉泰姆	0.6giN嘉泰姆	280giN嘉泰姆	250giN嘉泰姆	25giN嘉泰姆
CXSD62125AgiN嘉泰姆	SOT23-5giN嘉泰姆	CMgiN嘉泰姆	1giN嘉泰姆	1giN嘉泰姆	2.7giN嘉泰姆	6giN嘉泰姆	1500giN嘉泰姆	0.6giN嘉泰姆	280giN嘉泰姆	250giN嘉泰姆
CXSD62126giN嘉泰姆	SOP-8giN嘉泰姆	CMgiN嘉泰姆	1giN嘉泰姆	3giN嘉泰姆	4.3giN嘉泰姆	14giN嘉泰姆	500giN嘉泰姆	0.8giN嘉泰姆	70giN嘉泰姆	70giN嘉泰姆	500giN嘉泰姆
CXSD62127giN嘉泰姆	SOP-8PgiN嘉泰姆	CMgiN嘉泰姆	1giN嘉泰姆	3giN嘉泰姆	4.3giN嘉泰姆	14giN嘉泰姆	500giN嘉泰姆	0.8giN嘉泰姆	55giN嘉泰姆	45giN嘉泰姆	500giN嘉泰姆
CXSD62128BgiN嘉泰姆	TDFN3x3-10giN嘉泰姆			3giN嘉泰姆	2.6giN嘉泰姆	5.5giN嘉泰姆	2000giN嘉泰姆	0.8giN嘉泰姆	110giN嘉泰姆	110giN嘉泰姆	460giN嘉泰姆
CXSD62129giN嘉泰姆	TDFN3x3-10giN嘉泰姆	CMgiN嘉泰姆	2giN嘉泰姆	1giN嘉泰姆	2.7giN嘉泰姆	6giN嘉泰姆	1500giN嘉泰姆	0.6giN嘉泰姆	280giN嘉泰姆	250giN嘉泰姆	500giN嘉泰姆
CXSD62129AgiN嘉泰姆	TDFN3x3-10giN嘉泰姆	CMgiN嘉泰姆	2giN嘉泰姆	1giN嘉泰姆	2.7giN嘉泰姆	6giN嘉泰姆	1500giN嘉泰姆	0.6giN嘉泰姆	280giN嘉泰姆	250giN嘉泰姆
CXSD62130giN嘉泰姆	TDFN2x2-6giN嘉泰姆	CMgiN嘉泰姆	1giN嘉泰姆	1giN嘉泰姆	2.7giN嘉泰姆	6giN嘉泰姆	1500giN嘉泰姆	0.6giN嘉泰姆	280giN嘉泰姆	250giN嘉泰姆	25giN嘉泰姆
CXSD62130AgiN嘉泰姆	TDFN2x2-6giN嘉泰姆	CMgiN嘉泰姆	1giN嘉泰姆	1giN嘉泰姆	2.7giN嘉泰姆	6giN嘉泰姆	1500giN嘉泰姆	0.6giN嘉泰姆	280giN嘉泰姆	250giN嘉泰姆
CXSD62131giN嘉泰姆	TDFN3x3-12giN嘉泰姆	CMgiN嘉泰姆	2giN嘉泰姆	1giN嘉泰姆	2.7giN嘉泰姆	6giN嘉泰姆	1500giN嘉泰姆	0.6giN嘉泰姆	280giN嘉泰姆	250giN嘉泰姆	25giN嘉泰姆
CXSD62131AgiN嘉泰姆	TDFN3x3-12giN嘉泰姆	CMgiN嘉泰姆	2giN嘉泰姆	1giN嘉泰姆	2.7giN嘉泰姆	6giN嘉泰姆	1500giN嘉泰姆	0.6giN嘉泰姆	280giN嘉泰姆	250giN嘉泰姆
CXSD62131CgiN嘉泰姆	TDFN 3x3 12giN嘉泰姆	CMgiN嘉泰姆	2giN嘉泰姆	1giN嘉泰姆	3giN嘉泰姆	5.5giN嘉泰姆	1500giN嘉泰姆	0.6giN嘉泰姆	280giN嘉泰姆	250giN嘉泰姆	30giN嘉泰姆
CXSD62132giN嘉泰姆	TQFN3x3-20giN嘉泰姆	CMgiN嘉泰姆	3giN嘉泰姆	2giN嘉泰姆	2.9giN嘉泰姆	5.5giN嘉泰姆	1500giN嘉泰姆	0.6giN嘉泰姆	-giN嘉泰姆	-giN嘉泰姆	300giN嘉泰姆
CXSD62133giN嘉泰姆	TDFN2x2-8giN嘉泰姆	CMgiN嘉泰姆	1giN嘉泰姆	1giN嘉泰姆	3.3giN嘉泰姆	8giN嘉泰姆	1500giN嘉泰姆	0.6giN嘉泰姆	280giN嘉泰姆	250giN嘉泰姆	25giN嘉泰姆
CXSD62134giN嘉泰姆	SOP-8giN嘉泰姆	CMgiN嘉泰姆	1giN嘉泰姆	2giN嘉泰姆	4.5giN嘉泰姆	24giN嘉泰姆	340giN嘉泰姆	0.925giN嘉泰姆	110giN嘉泰姆	110giN嘉泰姆	1900giN嘉泰姆
CXSD62135giN嘉泰姆	SOP-8PgiN嘉泰姆	CMgiN嘉泰姆	1giN嘉泰姆	3giN嘉泰姆	4.5giN嘉泰姆	24giN嘉泰姆	340giN嘉泰姆	0.925giN嘉泰姆	110giN嘉泰姆	110giN嘉泰姆	1900giN嘉泰姆
CXSD62136giN嘉泰姆	SOP-8giN嘉泰姆	CMgiN嘉泰姆	1giN嘉泰姆	2giN嘉泰姆	4.5giN嘉泰姆	24giN嘉泰姆	340giN嘉泰姆	0.92giN嘉泰姆	130giN嘉泰姆	130giN嘉泰姆	1900giN嘉泰姆
giN嘉泰姆

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