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：183

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4Xs嘉泰姆

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

一,产品概述(General Description) 4Xs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 4Xs嘉泰姆

applications. 100%duty cycle provides low dropout operation, extending battery 4Xs嘉泰姆

life in portable electrical devices.The internally fixed 1.5MHz operating frequency4Xs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.4Xs嘉泰姆

The CXSD62125 CXSD62125A is available in SOT-23-5/TSOT-23-5A packages.4Xs嘉泰姆
二.产品特点(Features)4Xs嘉泰姆
1A Output Current4Xs嘉泰姆
Wide 2.7V~6.0V Input Voltage4Xs嘉泰姆
Fixed 1.5MHz Switching Frequency4Xs嘉泰姆
Low Dropout Operating at 100% Duty Cycle4Xs嘉泰姆
25μA Quiescent Current4Xs嘉泰姆
Integrate Synchronous Rectifier4Xs嘉泰姆
0.6V Reference Voltage4Xs嘉泰姆
Current-Mode Operation with Internal4Xs嘉泰姆
Compensation4Xs嘉泰姆
- Stable with Ceramic Output Capacitors4Xs嘉泰姆
- Fast Line Transient Response4Xs嘉泰姆
Short-Circuit Protection4Xs嘉泰姆
Over-Temperature Protection with Hysteresis4Xs嘉泰姆
Available in SOT-23-5/TSOT-23-5A Packages4Xs嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)4Xs嘉泰姆
三,应用范围 (Applications)4Xs嘉泰姆

HD STB4Xs嘉泰姆

BT Mouse4Xs嘉泰姆
PND Instrument4Xs嘉泰姆
Portable Instrument4Xs嘉泰姆
四.下载产品资料PDF文档 4Xs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！4Xs嘉泰姆

QQ截图20160419174301.jpg 4Xs嘉泰姆

五,产品封装图 (Package)4Xs嘉泰姆

4Xs嘉泰姆

六.电路原理图4Xs嘉泰姆

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七,功能概述4Xs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:4Xs嘉泰姆
PD ≅ IOUT2 x (RP-FET x D+RN-FET x (1-D))4Xs嘉泰姆
The temperature rise is given by:4Xs嘉泰姆
TR = (PD)(èJA)4Xs嘉泰姆
Where PD is the power dissipated by the regulator, D is4Xs嘉泰姆
duty cycle of main switch4Xs嘉泰姆
D = VOUT/VIN4Xs嘉泰姆
The èJA is the thermal resistance from the junction of the4Xs嘉泰姆
die to the ambient temperature. The junction temperature,4Xs嘉泰姆
TJ, is given by:4Xs嘉泰姆
TJ = TA + TR4Xs嘉泰姆
Where TA is the ambient temperature.
Layout Consideration4Xs嘉泰姆
For all switching power supplies, the layout is an important step in the design; especially at high peak currents4Xs嘉泰姆
and switching frequencies. If the layout is not carefully done, the regulator might show noise problems and duty4Xs嘉泰姆
cycle jitter.4Xs嘉泰姆
1. The input capacitor should be placed close to the VIN and GND. Connecting the capacitor and VIN/GND with4Xs嘉泰姆
short and wide trace without any via holes for good input voltage filtering. The distance between VIN/GND4Xs嘉泰姆
to capacitor less than 2mm respectively is recommended.4Xs嘉泰姆
2. To minimize copper trace connections that can inject noise into the system, the inductor should be placed4Xs嘉泰姆
as close as possible to the SW pin to minimize the noise coupling into other circuits.4Xs嘉泰姆
3. The output capacitor should be place closed to converter VOUT and GND.4Xs嘉泰姆
4. Since the feedback pin and network is a high impedance circuit the feedback network should be routed4Xs嘉泰姆
away from the inductor. The feedback pin and feedback network should be shielded with a ground plane4Xs嘉泰姆
or trace to minimize noise coupling into this circuit.4Xs嘉泰姆
5. A star ground connection or ground plane minimizes ground shifts and noise is recommended.4Xs嘉泰姆
八,相关产品 更多同类产品.......4Xs嘉泰姆

Switching Regulator > Buck Converter4Xs嘉泰姆
Part_No 4Xs嘉泰姆	Package4Xs嘉泰姆	Architectu4Xs嘉泰姆	No.of4Xs嘉泰姆 PWM 4Xs嘉泰姆 Outpu4Xs嘉泰姆	Drive4Xs嘉泰姆 Lout4Xs嘉泰姆 (A) 4Xs嘉泰姆	Vin(V) 4Xs嘉泰姆		Fmax4Xs嘉泰姆 Khz 4Xs嘉泰姆	Vref 4Xs嘉泰姆 (V) 4Xs嘉泰姆	R-Top (milohm) 4Xs嘉泰姆	R-Sync (milohm) 4Xs嘉泰姆	Iq (No load) (uA) 4Xs嘉泰姆
Part_No 4Xs嘉泰姆	Package4Xs嘉泰姆	Architectu4Xs嘉泰姆	No.of4Xs嘉泰姆 PWM 4Xs嘉泰姆 Outpu4Xs嘉泰姆	Drive4Xs嘉泰姆 Lout4Xs嘉泰姆 (A) 4Xs嘉泰姆	min4Xs嘉泰姆	max4Xs嘉泰姆	Fmax4Xs嘉泰姆 Khz 4Xs嘉泰姆	Vref 4Xs嘉泰姆 (V) 4Xs嘉泰姆	R-Top (milohm) 4Xs嘉泰姆	R-Sync (milohm) 4Xs嘉泰姆	Iq (No load) (uA) 4Xs嘉泰姆
CXSD621224Xs嘉泰姆	TQFN5x6-284Xs嘉泰姆	CM4Xs嘉泰姆	14Xs嘉泰姆	54Xs嘉泰姆	4.54Xs嘉泰姆	264Xs嘉泰姆	3804Xs嘉泰姆	0.84Xs嘉泰姆	504Xs嘉泰姆	204Xs嘉泰姆	10004Xs嘉泰姆
CXSD621234Xs嘉泰姆	SOP-84Xs嘉泰姆	CM4Xs嘉泰姆	14Xs嘉泰姆	24Xs嘉泰姆	4.54Xs嘉泰姆	264Xs嘉泰姆	3804Xs嘉泰姆	0.84Xs嘉泰姆	1004Xs嘉泰姆		10004Xs嘉泰姆
CXSD621244Xs嘉泰姆	SOP-8P4Xs嘉泰姆	CM4Xs嘉泰姆	14Xs嘉泰姆	44Xs嘉泰姆	4.54Xs嘉泰姆	264Xs嘉泰姆	3804Xs嘉泰姆	0.84Xs嘉泰姆	804Xs嘉泰姆		10004Xs嘉泰姆
CXSD621254Xs嘉泰姆	SOT23-5\|TSOT23-54Xs嘉泰姆	CM4Xs嘉泰姆	14Xs嘉泰姆	14Xs嘉泰姆	2.74Xs嘉泰姆	64Xs嘉泰姆	15004Xs嘉泰姆	0.64Xs嘉泰姆	2804Xs嘉泰姆	2504Xs嘉泰姆	254Xs嘉泰姆
CXSD62125A4Xs嘉泰姆	SOT23-54Xs嘉泰姆	CM4Xs嘉泰姆	14Xs嘉泰姆	14Xs嘉泰姆	2.74Xs嘉泰姆	64Xs嘉泰姆	15004Xs嘉泰姆	0.64Xs嘉泰姆	2804Xs嘉泰姆	2504Xs嘉泰姆
CXSD621264Xs嘉泰姆	SOP-84Xs嘉泰姆	CM4Xs嘉泰姆	14Xs嘉泰姆	34Xs嘉泰姆	4.34Xs嘉泰姆	144Xs嘉泰姆	5004Xs嘉泰姆	0.84Xs嘉泰姆	704Xs嘉泰姆	704Xs嘉泰姆	5004Xs嘉泰姆
CXSD621274Xs嘉泰姆	SOP-8P4Xs嘉泰姆	CM4Xs嘉泰姆	14Xs嘉泰姆	34Xs嘉泰姆	4.34Xs嘉泰姆	144Xs嘉泰姆	5004Xs嘉泰姆	0.84Xs嘉泰姆	554Xs嘉泰姆	454Xs嘉泰姆	5004Xs嘉泰姆
CXSD62128B4Xs嘉泰姆	TDFN3x3-104Xs嘉泰姆			34Xs嘉泰姆	2.64Xs嘉泰姆	5.54Xs嘉泰姆	20004Xs嘉泰姆	0.84Xs嘉泰姆	1104Xs嘉泰姆	1104Xs嘉泰姆	4604Xs嘉泰姆
CXSD621294Xs嘉泰姆	TDFN3x3-104Xs嘉泰姆	CM4Xs嘉泰姆	24Xs嘉泰姆	14Xs嘉泰姆	2.74Xs嘉泰姆	64Xs嘉泰姆	15004Xs嘉泰姆	0.64Xs嘉泰姆	2804Xs嘉泰姆	2504Xs嘉泰姆	5004Xs嘉泰姆
CXSD62129A4Xs嘉泰姆	TDFN3x3-104Xs嘉泰姆	CM4Xs嘉泰姆	24Xs嘉泰姆	14Xs嘉泰姆	2.74Xs嘉泰姆	64Xs嘉泰姆	15004Xs嘉泰姆	0.64Xs嘉泰姆	2804Xs嘉泰姆	2504Xs嘉泰姆
CXSD621304Xs嘉泰姆	TDFN2x2-64Xs嘉泰姆	CM4Xs嘉泰姆	14Xs嘉泰姆	14Xs嘉泰姆	2.74Xs嘉泰姆	64Xs嘉泰姆	15004Xs嘉泰姆	0.64Xs嘉泰姆	2804Xs嘉泰姆	2504Xs嘉泰姆	254Xs嘉泰姆
CXSD62130A4Xs嘉泰姆	TDFN2x2-64Xs嘉泰姆	CM4Xs嘉泰姆	14Xs嘉泰姆	14Xs嘉泰姆	2.74Xs嘉泰姆	64Xs嘉泰姆	15004Xs嘉泰姆	0.64Xs嘉泰姆	2804Xs嘉泰姆	2504Xs嘉泰姆
CXSD621314Xs嘉泰姆	TDFN3x3-124Xs嘉泰姆	CM4Xs嘉泰姆	24Xs嘉泰姆	14Xs嘉泰姆	2.74Xs嘉泰姆	64Xs嘉泰姆	15004Xs嘉泰姆	0.64Xs嘉泰姆	2804Xs嘉泰姆	2504Xs嘉泰姆	254Xs嘉泰姆
CXSD62131A4Xs嘉泰姆	TDFN3x3-124Xs嘉泰姆	CM4Xs嘉泰姆	24Xs嘉泰姆	14Xs嘉泰姆	2.74Xs嘉泰姆	64Xs嘉泰姆	15004Xs嘉泰姆	0.64Xs嘉泰姆	2804Xs嘉泰姆	2504Xs嘉泰姆
CXSD62131C4Xs嘉泰姆	TDFN 3x3 124Xs嘉泰姆	CM4Xs嘉泰姆	24Xs嘉泰姆	14Xs嘉泰姆	34Xs嘉泰姆	5.54Xs嘉泰姆	15004Xs嘉泰姆	0.64Xs嘉泰姆	2804Xs嘉泰姆	2504Xs嘉泰姆	304Xs嘉泰姆
CXSD621324Xs嘉泰姆	TQFN3x3-204Xs嘉泰姆	CM4Xs嘉泰姆	34Xs嘉泰姆	24Xs嘉泰姆	2.94Xs嘉泰姆	5.54Xs嘉泰姆	15004Xs嘉泰姆	0.64Xs嘉泰姆	-4Xs嘉泰姆	-4Xs嘉泰姆	3004Xs嘉泰姆
CXSD621334Xs嘉泰姆	TDFN2x2-84Xs嘉泰姆	CM4Xs嘉泰姆	14Xs嘉泰姆	14Xs嘉泰姆	3.34Xs嘉泰姆	84Xs嘉泰姆	15004Xs嘉泰姆	0.64Xs嘉泰姆	2804Xs嘉泰姆	2504Xs嘉泰姆	254Xs嘉泰姆
CXSD621344Xs嘉泰姆	SOP-84Xs嘉泰姆	CM4Xs嘉泰姆	14Xs嘉泰姆	24Xs嘉泰姆	4.54Xs嘉泰姆	244Xs嘉泰姆	3404Xs嘉泰姆	0.9254Xs嘉泰姆	1104Xs嘉泰姆	1104Xs嘉泰姆	19004Xs嘉泰姆
CXSD621354Xs嘉泰姆	SOP-8P4Xs嘉泰姆	CM4Xs嘉泰姆	14Xs嘉泰姆	34Xs嘉泰姆	4.54Xs嘉泰姆	244Xs嘉泰姆	3404Xs嘉泰姆	0.9254Xs嘉泰姆	1104Xs嘉泰姆	1104Xs嘉泰姆	19004Xs嘉泰姆
CXSD621364Xs嘉泰姆	SOP-84Xs嘉泰姆	CM4Xs嘉泰姆	14Xs嘉泰姆	24Xs嘉泰姆	4.54Xs嘉泰姆	244Xs嘉泰姆	3404Xs嘉泰姆	0.924Xs嘉泰姆	1304Xs嘉泰姆	1304Xs嘉泰姆	19004Xs嘉泰姆
4Xs嘉泰姆

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