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：131

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bai嘉泰姆

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

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

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

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

The CXSD62125 CXSD62125A is available in SOT-23-5/TSOT-23-5A packages.bai嘉泰姆
二.产品特点(Features)bai嘉泰姆
1A Output Currentbai嘉泰姆
Wide 2.7V~6.0V Input Voltagebai嘉泰姆
Fixed 1.5MHz Switching Frequencybai嘉泰姆
Low Dropout Operating at 100% Duty Cyclebai嘉泰姆
25μA Quiescent Currentbai嘉泰姆
Integrate Synchronous Rectifierbai嘉泰姆
0.6V Reference Voltagebai嘉泰姆
Current-Mode Operation with Internalbai嘉泰姆
Compensationbai嘉泰姆
- Stable with Ceramic Output Capacitorsbai嘉泰姆
- Fast Line Transient Responsebai嘉泰姆
Short-Circuit Protectionbai嘉泰姆
Over-Temperature Protection with Hysteresisbai嘉泰姆
Available in SOT-23-5/TSOT-23-5A Packagesbai嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)bai嘉泰姆
三,应用范围 (Applications)bai嘉泰姆

HD STBbai嘉泰姆

BT Mousebai嘉泰姆
PND Instrumentbai嘉泰姆
Portable Instrumentbai嘉泰姆
四.下载产品资料PDF文档 bai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！bai嘉泰姆

QQ截图20160419174301.jpg bai嘉泰姆

五,产品封装图 (Package)bai嘉泰姆

bai嘉泰姆

六.电路原理图bai嘉泰姆

bai嘉泰姆

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

Switching Regulator > Buck Converterbai嘉泰姆
Part_No bai嘉泰姆	Packagebai嘉泰姆	Architectubai嘉泰姆	No.ofbai嘉泰姆 PWM bai嘉泰姆 Outpubai嘉泰姆	Drivebai嘉泰姆 Loutbai嘉泰姆 (A) bai嘉泰姆	Vin(V) bai嘉泰姆		Fmaxbai嘉泰姆 Khz bai嘉泰姆	Vref bai嘉泰姆 (V) bai嘉泰姆	R-Top (milohm) bai嘉泰姆	R-Sync (milohm) bai嘉泰姆	Iq (No load) (uA) bai嘉泰姆
Part_No bai嘉泰姆	Packagebai嘉泰姆	Architectubai嘉泰姆	No.ofbai嘉泰姆 PWM bai嘉泰姆 Outpubai嘉泰姆	Drivebai嘉泰姆 Loutbai嘉泰姆 (A) bai嘉泰姆	minbai嘉泰姆	maxbai嘉泰姆	Fmaxbai嘉泰姆 Khz bai嘉泰姆	Vref bai嘉泰姆 (V) bai嘉泰姆	R-Top (milohm) bai嘉泰姆	R-Sync (milohm) bai嘉泰姆	Iq (No load) (uA) bai嘉泰姆
CXSD62122bai嘉泰姆	TQFN5x6-28bai嘉泰姆	CMbai嘉泰姆	1bai嘉泰姆	5bai嘉泰姆	4.5bai嘉泰姆	26bai嘉泰姆	380bai嘉泰姆	0.8bai嘉泰姆	50bai嘉泰姆	20bai嘉泰姆	1000bai嘉泰姆
CXSD62123bai嘉泰姆	SOP-8bai嘉泰姆	CMbai嘉泰姆	1bai嘉泰姆	2bai嘉泰姆	4.5bai嘉泰姆	26bai嘉泰姆	380bai嘉泰姆	0.8bai嘉泰姆	100bai嘉泰姆		1000bai嘉泰姆
CXSD62124bai嘉泰姆	SOP-8Pbai嘉泰姆	CMbai嘉泰姆	1bai嘉泰姆	4bai嘉泰姆	4.5bai嘉泰姆	26bai嘉泰姆	380bai嘉泰姆	0.8bai嘉泰姆	80bai嘉泰姆		1000bai嘉泰姆
CXSD62125bai嘉泰姆	SOT23-5\|TSOT23-5bai嘉泰姆	CMbai嘉泰姆	1bai嘉泰姆	1bai嘉泰姆	2.7bai嘉泰姆	6bai嘉泰姆	1500bai嘉泰姆	0.6bai嘉泰姆	280bai嘉泰姆	250bai嘉泰姆	25bai嘉泰姆
CXSD62125Abai嘉泰姆	SOT23-5bai嘉泰姆	CMbai嘉泰姆	1bai嘉泰姆	1bai嘉泰姆	2.7bai嘉泰姆	6bai嘉泰姆	1500bai嘉泰姆	0.6bai嘉泰姆	280bai嘉泰姆	250bai嘉泰姆
CXSD62126bai嘉泰姆	SOP-8bai嘉泰姆	CMbai嘉泰姆	1bai嘉泰姆	3bai嘉泰姆	4.3bai嘉泰姆	14bai嘉泰姆	500bai嘉泰姆	0.8bai嘉泰姆	70bai嘉泰姆	70bai嘉泰姆	500bai嘉泰姆
CXSD62127bai嘉泰姆	SOP-8Pbai嘉泰姆	CMbai嘉泰姆	1bai嘉泰姆	3bai嘉泰姆	4.3bai嘉泰姆	14bai嘉泰姆	500bai嘉泰姆	0.8bai嘉泰姆	55bai嘉泰姆	45bai嘉泰姆	500bai嘉泰姆
CXSD62128Bbai嘉泰姆	TDFN3x3-10bai嘉泰姆			3bai嘉泰姆	2.6bai嘉泰姆	5.5bai嘉泰姆	2000bai嘉泰姆	0.8bai嘉泰姆	110bai嘉泰姆	110bai嘉泰姆	460bai嘉泰姆
CXSD62129bai嘉泰姆	TDFN3x3-10bai嘉泰姆	CMbai嘉泰姆	2bai嘉泰姆	1bai嘉泰姆	2.7bai嘉泰姆	6bai嘉泰姆	1500bai嘉泰姆	0.6bai嘉泰姆	280bai嘉泰姆	250bai嘉泰姆	500bai嘉泰姆
CXSD62129Abai嘉泰姆	TDFN3x3-10bai嘉泰姆	CMbai嘉泰姆	2bai嘉泰姆	1bai嘉泰姆	2.7bai嘉泰姆	6bai嘉泰姆	1500bai嘉泰姆	0.6bai嘉泰姆	280bai嘉泰姆	250bai嘉泰姆
CXSD62130bai嘉泰姆	TDFN2x2-6bai嘉泰姆	CMbai嘉泰姆	1bai嘉泰姆	1bai嘉泰姆	2.7bai嘉泰姆	6bai嘉泰姆	1500bai嘉泰姆	0.6bai嘉泰姆	280bai嘉泰姆	250bai嘉泰姆	25bai嘉泰姆
CXSD62130Abai嘉泰姆	TDFN2x2-6bai嘉泰姆	CMbai嘉泰姆	1bai嘉泰姆	1bai嘉泰姆	2.7bai嘉泰姆	6bai嘉泰姆	1500bai嘉泰姆	0.6bai嘉泰姆	280bai嘉泰姆	250bai嘉泰姆
CXSD62131bai嘉泰姆	TDFN3x3-12bai嘉泰姆	CMbai嘉泰姆	2bai嘉泰姆	1bai嘉泰姆	2.7bai嘉泰姆	6bai嘉泰姆	1500bai嘉泰姆	0.6bai嘉泰姆	280bai嘉泰姆	250bai嘉泰姆	25bai嘉泰姆
CXSD62131Abai嘉泰姆	TDFN3x3-12bai嘉泰姆	CMbai嘉泰姆	2bai嘉泰姆	1bai嘉泰姆	2.7bai嘉泰姆	6bai嘉泰姆	1500bai嘉泰姆	0.6bai嘉泰姆	280bai嘉泰姆	250bai嘉泰姆
CXSD62131Cbai嘉泰姆	TDFN 3x3 12bai嘉泰姆	CMbai嘉泰姆	2bai嘉泰姆	1bai嘉泰姆	3bai嘉泰姆	5.5bai嘉泰姆	1500bai嘉泰姆	0.6bai嘉泰姆	280bai嘉泰姆	250bai嘉泰姆	30bai嘉泰姆
CXSD62132bai嘉泰姆	TQFN3x3-20bai嘉泰姆	CMbai嘉泰姆	3bai嘉泰姆	2bai嘉泰姆	2.9bai嘉泰姆	5.5bai嘉泰姆	1500bai嘉泰姆	0.6bai嘉泰姆	-bai嘉泰姆	-bai嘉泰姆	300bai嘉泰姆
CXSD62133bai嘉泰姆	TDFN2x2-8bai嘉泰姆	CMbai嘉泰姆	1bai嘉泰姆	1bai嘉泰姆	3.3bai嘉泰姆	8bai嘉泰姆	1500bai嘉泰姆	0.6bai嘉泰姆	280bai嘉泰姆	250bai嘉泰姆	25bai嘉泰姆
CXSD62134bai嘉泰姆	SOP-8bai嘉泰姆	CMbai嘉泰姆	1bai嘉泰姆	2bai嘉泰姆	4.5bai嘉泰姆	24bai嘉泰姆	340bai嘉泰姆	0.925bai嘉泰姆	110bai嘉泰姆	110bai嘉泰姆	1900bai嘉泰姆
CXSD62135bai嘉泰姆	SOP-8Pbai嘉泰姆	CMbai嘉泰姆	1bai嘉泰姆	3bai嘉泰姆	4.5bai嘉泰姆	24bai嘉泰姆	340bai嘉泰姆	0.925bai嘉泰姆	110bai嘉泰姆	110bai嘉泰姆	1900bai嘉泰姆
CXSD62136bai嘉泰姆	SOP-8bai嘉泰姆	CMbai嘉泰姆	1bai嘉泰姆	2bai嘉泰姆	4.5bai嘉泰姆	24bai嘉泰姆	340bai嘉泰姆	0.92bai嘉泰姆	130bai嘉泰姆	130bai嘉泰姆	1900bai嘉泰姆
bai嘉泰姆

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