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：142

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wAn嘉泰姆

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

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

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

life in portable electrical devices.The internally fixed 1.5MHz operating frequencywAn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.wAn嘉泰姆

The CXSD62125 CXSD62125A is available in SOT-23-5/TSOT-23-5A packages.wAn嘉泰姆
二.产品特点(Features)wAn嘉泰姆
1A Output CurrentwAn嘉泰姆
Wide 2.7V~6.0V Input VoltagewAn嘉泰姆
Fixed 1.5MHz Switching FrequencywAn嘉泰姆
Low Dropout Operating at 100% Duty CyclewAn嘉泰姆
25μA Quiescent CurrentwAn嘉泰姆
Integrate Synchronous RectifierwAn嘉泰姆
0.6V Reference VoltagewAn嘉泰姆
Current-Mode Operation with InternalwAn嘉泰姆
CompensationwAn嘉泰姆
- Stable with Ceramic Output CapacitorswAn嘉泰姆
- Fast Line Transient ResponsewAn嘉泰姆
Short-Circuit ProtectionwAn嘉泰姆
Over-Temperature Protection with HysteresiswAn嘉泰姆
Available in SOT-23-5/TSOT-23-5A PackageswAn嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)wAn嘉泰姆
三,应用范围 (Applications)wAn嘉泰姆

HD STBwAn嘉泰姆

BT MousewAn嘉泰姆
PND InstrumentwAn嘉泰姆
Portable InstrumentwAn嘉泰姆
四.下载产品资料PDF文档 wAn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！wAn嘉泰姆

QQ截图20160419174301.jpg wAn嘉泰姆

五,产品封装图 (Package)wAn嘉泰姆

wAn嘉泰姆

六.电路原理图wAn嘉泰姆

wAn嘉泰姆

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

Switching Regulator > Buck ConverterwAn嘉泰姆
Part_No wAn嘉泰姆	PackagewAn嘉泰姆	ArchitectuwAn嘉泰姆	No.ofwAn嘉泰姆 PWM wAn嘉泰姆 OutpuwAn嘉泰姆	DrivewAn嘉泰姆 LoutwAn嘉泰姆 (A) wAn嘉泰姆	Vin(V) wAn嘉泰姆		FmaxwAn嘉泰姆 Khz wAn嘉泰姆	Vref wAn嘉泰姆 (V) wAn嘉泰姆	R-Top (milohm) wAn嘉泰姆	R-Sync (milohm) wAn嘉泰姆	Iq (No load) (uA) wAn嘉泰姆
Part_No wAn嘉泰姆	PackagewAn嘉泰姆	ArchitectuwAn嘉泰姆	No.ofwAn嘉泰姆 PWM wAn嘉泰姆 OutpuwAn嘉泰姆	DrivewAn嘉泰姆 LoutwAn嘉泰姆 (A) wAn嘉泰姆	minwAn嘉泰姆	maxwAn嘉泰姆	FmaxwAn嘉泰姆 Khz wAn嘉泰姆	Vref wAn嘉泰姆 (V) wAn嘉泰姆	R-Top (milohm) wAn嘉泰姆	R-Sync (milohm) wAn嘉泰姆	Iq (No load) (uA) wAn嘉泰姆
CXSD62122wAn嘉泰姆	TQFN5x6-28wAn嘉泰姆	CMwAn嘉泰姆	1wAn嘉泰姆	5wAn嘉泰姆	4.5wAn嘉泰姆	26wAn嘉泰姆	380wAn嘉泰姆	0.8wAn嘉泰姆	50wAn嘉泰姆	20wAn嘉泰姆	1000wAn嘉泰姆
CXSD62123wAn嘉泰姆	SOP-8wAn嘉泰姆	CMwAn嘉泰姆	1wAn嘉泰姆	2wAn嘉泰姆	4.5wAn嘉泰姆	26wAn嘉泰姆	380wAn嘉泰姆	0.8wAn嘉泰姆	100wAn嘉泰姆		1000wAn嘉泰姆
CXSD62124wAn嘉泰姆	SOP-8PwAn嘉泰姆	CMwAn嘉泰姆	1wAn嘉泰姆	4wAn嘉泰姆	4.5wAn嘉泰姆	26wAn嘉泰姆	380wAn嘉泰姆	0.8wAn嘉泰姆	80wAn嘉泰姆		1000wAn嘉泰姆
CXSD62125wAn嘉泰姆	SOT23-5\|TSOT23-5wAn嘉泰姆	CMwAn嘉泰姆	1wAn嘉泰姆	1wAn嘉泰姆	2.7wAn嘉泰姆	6wAn嘉泰姆	1500wAn嘉泰姆	0.6wAn嘉泰姆	280wAn嘉泰姆	250wAn嘉泰姆	25wAn嘉泰姆
CXSD62125AwAn嘉泰姆	SOT23-5wAn嘉泰姆	CMwAn嘉泰姆	1wAn嘉泰姆	1wAn嘉泰姆	2.7wAn嘉泰姆	6wAn嘉泰姆	1500wAn嘉泰姆	0.6wAn嘉泰姆	280wAn嘉泰姆	250wAn嘉泰姆
CXSD62126wAn嘉泰姆	SOP-8wAn嘉泰姆	CMwAn嘉泰姆	1wAn嘉泰姆	3wAn嘉泰姆	4.3wAn嘉泰姆	14wAn嘉泰姆	500wAn嘉泰姆	0.8wAn嘉泰姆	70wAn嘉泰姆	70wAn嘉泰姆	500wAn嘉泰姆
CXSD62127wAn嘉泰姆	SOP-8PwAn嘉泰姆	CMwAn嘉泰姆	1wAn嘉泰姆	3wAn嘉泰姆	4.3wAn嘉泰姆	14wAn嘉泰姆	500wAn嘉泰姆	0.8wAn嘉泰姆	55wAn嘉泰姆	45wAn嘉泰姆	500wAn嘉泰姆
CXSD62128BwAn嘉泰姆	TDFN3x3-10wAn嘉泰姆			3wAn嘉泰姆	2.6wAn嘉泰姆	5.5wAn嘉泰姆	2000wAn嘉泰姆	0.8wAn嘉泰姆	110wAn嘉泰姆	110wAn嘉泰姆	460wAn嘉泰姆
CXSD62129wAn嘉泰姆	TDFN3x3-10wAn嘉泰姆	CMwAn嘉泰姆	2wAn嘉泰姆	1wAn嘉泰姆	2.7wAn嘉泰姆	6wAn嘉泰姆	1500wAn嘉泰姆	0.6wAn嘉泰姆	280wAn嘉泰姆	250wAn嘉泰姆	500wAn嘉泰姆
CXSD62129AwAn嘉泰姆	TDFN3x3-10wAn嘉泰姆	CMwAn嘉泰姆	2wAn嘉泰姆	1wAn嘉泰姆	2.7wAn嘉泰姆	6wAn嘉泰姆	1500wAn嘉泰姆	0.6wAn嘉泰姆	280wAn嘉泰姆	250wAn嘉泰姆
CXSD62130wAn嘉泰姆	TDFN2x2-6wAn嘉泰姆	CMwAn嘉泰姆	1wAn嘉泰姆	1wAn嘉泰姆	2.7wAn嘉泰姆	6wAn嘉泰姆	1500wAn嘉泰姆	0.6wAn嘉泰姆	280wAn嘉泰姆	250wAn嘉泰姆	25wAn嘉泰姆
CXSD62130AwAn嘉泰姆	TDFN2x2-6wAn嘉泰姆	CMwAn嘉泰姆	1wAn嘉泰姆	1wAn嘉泰姆	2.7wAn嘉泰姆	6wAn嘉泰姆	1500wAn嘉泰姆	0.6wAn嘉泰姆	280wAn嘉泰姆	250wAn嘉泰姆
CXSD62131wAn嘉泰姆	TDFN3x3-12wAn嘉泰姆	CMwAn嘉泰姆	2wAn嘉泰姆	1wAn嘉泰姆	2.7wAn嘉泰姆	6wAn嘉泰姆	1500wAn嘉泰姆	0.6wAn嘉泰姆	280wAn嘉泰姆	250wAn嘉泰姆	25wAn嘉泰姆
CXSD62131AwAn嘉泰姆	TDFN3x3-12wAn嘉泰姆	CMwAn嘉泰姆	2wAn嘉泰姆	1wAn嘉泰姆	2.7wAn嘉泰姆	6wAn嘉泰姆	1500wAn嘉泰姆	0.6wAn嘉泰姆	280wAn嘉泰姆	250wAn嘉泰姆
CXSD62131CwAn嘉泰姆	TDFN 3x3 12wAn嘉泰姆	CMwAn嘉泰姆	2wAn嘉泰姆	1wAn嘉泰姆	3wAn嘉泰姆	5.5wAn嘉泰姆	1500wAn嘉泰姆	0.6wAn嘉泰姆	280wAn嘉泰姆	250wAn嘉泰姆	30wAn嘉泰姆
CXSD62132wAn嘉泰姆	TQFN3x3-20wAn嘉泰姆	CMwAn嘉泰姆	3wAn嘉泰姆	2wAn嘉泰姆	2.9wAn嘉泰姆	5.5wAn嘉泰姆	1500wAn嘉泰姆	0.6wAn嘉泰姆	-wAn嘉泰姆	-wAn嘉泰姆	300wAn嘉泰姆
CXSD62133wAn嘉泰姆	TDFN2x2-8wAn嘉泰姆	CMwAn嘉泰姆	1wAn嘉泰姆	1wAn嘉泰姆	3.3wAn嘉泰姆	8wAn嘉泰姆	1500wAn嘉泰姆	0.6wAn嘉泰姆	280wAn嘉泰姆	250wAn嘉泰姆	25wAn嘉泰姆
CXSD62134wAn嘉泰姆	SOP-8wAn嘉泰姆	CMwAn嘉泰姆	1wAn嘉泰姆	2wAn嘉泰姆	4.5wAn嘉泰姆	24wAn嘉泰姆	340wAn嘉泰姆	0.925wAn嘉泰姆	110wAn嘉泰姆	110wAn嘉泰姆	1900wAn嘉泰姆
CXSD62135wAn嘉泰姆	SOP-8PwAn嘉泰姆	CMwAn嘉泰姆	1wAn嘉泰姆	3wAn嘉泰姆	4.5wAn嘉泰姆	24wAn嘉泰姆	340wAn嘉泰姆	0.925wAn嘉泰姆	110wAn嘉泰姆	110wAn嘉泰姆	1900wAn嘉泰姆
CXSD62136wAn嘉泰姆	SOP-8wAn嘉泰姆	CMwAn嘉泰姆	1wAn嘉泰姆	2wAn嘉泰姆	4.5wAn嘉泰姆	24wAn嘉泰姆	340wAn嘉泰姆	0.92wAn嘉泰姆	130wAn嘉泰姆	130wAn嘉泰姆	1900wAn嘉泰姆
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上一篇：4A26V380kHz异步降压转换器CXSD62124 80mW P沟道MOSFET 输出电流调节自动PSM/PWM模式操作中的输出电压

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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