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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发表时间：2020-04-25浏览次数：82

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

目录nZV嘉泰姆

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

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

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

life in portable electrical devices.The internally fixed 1.5MHz operating frequencynZV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.nZV嘉泰姆

The CXSD62125 CXSD62125A is available in SOT-23-5/TSOT-23-5A packages.nZV嘉泰姆
二.产品特点(Features)nZV嘉泰姆
1A Output CurrentnZV嘉泰姆
Wide 2.7V~6.0V Input VoltagenZV嘉泰姆
Fixed 1.5MHz Switching FrequencynZV嘉泰姆
Low Dropout Operating at 100% Duty CyclenZV嘉泰姆
25μA Quiescent CurrentnZV嘉泰姆
Integrate Synchronous RectifiernZV嘉泰姆
0.6V Reference VoltagenZV嘉泰姆
Current-Mode Operation with InternalnZV嘉泰姆
CompensationnZV嘉泰姆
- Stable with Ceramic Output CapacitorsnZV嘉泰姆
- Fast Line Transient ResponsenZV嘉泰姆
Short-Circuit ProtectionnZV嘉泰姆
Over-Temperature Protection with HysteresisnZV嘉泰姆
Available in SOT-23-5/TSOT-23-5A PackagesnZV嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)nZV嘉泰姆
三,应用范围 (Applications)nZV嘉泰姆

HD STBnZV嘉泰姆

BT MousenZV嘉泰姆
PND InstrumentnZV嘉泰姆
Portable InstrumentnZV嘉泰姆
四.下载产品资料PDF文档 nZV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！nZV嘉泰姆

QQ截图20160419174301.jpg nZV嘉泰姆

五,产品封装图 (Package)nZV嘉泰姆

nZV嘉泰姆

六.电路原理图nZV嘉泰姆

nZV嘉泰姆

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

Switching Regulator > Buck ConverternZV嘉泰姆
Part_No nZV嘉泰姆	PackagenZV嘉泰姆	ArchitectunZV嘉泰姆	No.ofnZV嘉泰姆 PWM nZV嘉泰姆 OutpunZV嘉泰姆	DrivenZV嘉泰姆 LoutnZV嘉泰姆 (A) nZV嘉泰姆	Vin(V) nZV嘉泰姆		FmaxnZV嘉泰姆 Khz nZV嘉泰姆	Vref nZV嘉泰姆 (V) nZV嘉泰姆	R-Top (milohm) nZV嘉泰姆	R-Sync (milohm) nZV嘉泰姆	Iq (No load) (uA) nZV嘉泰姆
Part_No nZV嘉泰姆	PackagenZV嘉泰姆	ArchitectunZV嘉泰姆	No.ofnZV嘉泰姆 PWM nZV嘉泰姆 OutpunZV嘉泰姆	DrivenZV嘉泰姆 LoutnZV嘉泰姆 (A) nZV嘉泰姆	minnZV嘉泰姆	maxnZV嘉泰姆	FmaxnZV嘉泰姆 Khz nZV嘉泰姆	Vref nZV嘉泰姆 (V) nZV嘉泰姆	R-Top (milohm) nZV嘉泰姆	R-Sync (milohm) nZV嘉泰姆	Iq (No load) (uA) nZV嘉泰姆
CXSD62122nZV嘉泰姆	TQFN5x6-28nZV嘉泰姆	CMnZV嘉泰姆	1nZV嘉泰姆	5nZV嘉泰姆	4.5nZV嘉泰姆	26nZV嘉泰姆	380nZV嘉泰姆	0.8nZV嘉泰姆	50nZV嘉泰姆	20nZV嘉泰姆	1000nZV嘉泰姆
CXSD62123nZV嘉泰姆	SOP-8nZV嘉泰姆	CMnZV嘉泰姆	1nZV嘉泰姆	2nZV嘉泰姆	4.5nZV嘉泰姆	26nZV嘉泰姆	380nZV嘉泰姆	0.8nZV嘉泰姆	100nZV嘉泰姆		1000nZV嘉泰姆
CXSD62124nZV嘉泰姆	SOP-8PnZV嘉泰姆	CMnZV嘉泰姆	1nZV嘉泰姆	4nZV嘉泰姆	4.5nZV嘉泰姆	26nZV嘉泰姆	380nZV嘉泰姆	0.8nZV嘉泰姆	80nZV嘉泰姆		1000nZV嘉泰姆
CXSD62125nZV嘉泰姆	SOT23-5\|TSOT23-5nZV嘉泰姆	CMnZV嘉泰姆	1nZV嘉泰姆	1nZV嘉泰姆	2.7nZV嘉泰姆	6nZV嘉泰姆	1500nZV嘉泰姆	0.6nZV嘉泰姆	280nZV嘉泰姆	250nZV嘉泰姆	25nZV嘉泰姆
CXSD62125AnZV嘉泰姆	SOT23-5nZV嘉泰姆	CMnZV嘉泰姆	1nZV嘉泰姆	1nZV嘉泰姆	2.7nZV嘉泰姆	6nZV嘉泰姆	1500nZV嘉泰姆	0.6nZV嘉泰姆	280nZV嘉泰姆	250nZV嘉泰姆
CXSD62126nZV嘉泰姆	SOP-8nZV嘉泰姆	CMnZV嘉泰姆	1nZV嘉泰姆	3nZV嘉泰姆	4.3nZV嘉泰姆	14nZV嘉泰姆	500nZV嘉泰姆	0.8nZV嘉泰姆	70nZV嘉泰姆	70nZV嘉泰姆	500nZV嘉泰姆
CXSD62127nZV嘉泰姆	SOP-8PnZV嘉泰姆	CMnZV嘉泰姆	1nZV嘉泰姆	3nZV嘉泰姆	4.3nZV嘉泰姆	14nZV嘉泰姆	500nZV嘉泰姆	0.8nZV嘉泰姆	55nZV嘉泰姆	45nZV嘉泰姆	500nZV嘉泰姆
CXSD62128BnZV嘉泰姆	TDFN3x3-10nZV嘉泰姆			3nZV嘉泰姆	2.6nZV嘉泰姆	5.5nZV嘉泰姆	2000nZV嘉泰姆	0.8nZV嘉泰姆	110nZV嘉泰姆	110nZV嘉泰姆	460nZV嘉泰姆
CXSD62129nZV嘉泰姆	TDFN3x3-10nZV嘉泰姆	CMnZV嘉泰姆	2nZV嘉泰姆	1nZV嘉泰姆	2.7nZV嘉泰姆	6nZV嘉泰姆	1500nZV嘉泰姆	0.6nZV嘉泰姆	280nZV嘉泰姆	250nZV嘉泰姆	500nZV嘉泰姆
CXSD62129AnZV嘉泰姆	TDFN3x3-10nZV嘉泰姆	CMnZV嘉泰姆	2nZV嘉泰姆	1nZV嘉泰姆	2.7nZV嘉泰姆	6nZV嘉泰姆	1500nZV嘉泰姆	0.6nZV嘉泰姆	280nZV嘉泰姆	250nZV嘉泰姆
CXSD62130nZV嘉泰姆	TDFN2x2-6nZV嘉泰姆	CMnZV嘉泰姆	1nZV嘉泰姆	1nZV嘉泰姆	2.7nZV嘉泰姆	6nZV嘉泰姆	1500nZV嘉泰姆	0.6nZV嘉泰姆	280nZV嘉泰姆	250nZV嘉泰姆	25nZV嘉泰姆
CXSD62130AnZV嘉泰姆	TDFN2x2-6nZV嘉泰姆	CMnZV嘉泰姆	1nZV嘉泰姆	1nZV嘉泰姆	2.7nZV嘉泰姆	6nZV嘉泰姆	1500nZV嘉泰姆	0.6nZV嘉泰姆	280nZV嘉泰姆	250nZV嘉泰姆
CXSD62131nZV嘉泰姆	TDFN3x3-12nZV嘉泰姆	CMnZV嘉泰姆	2nZV嘉泰姆	1nZV嘉泰姆	2.7nZV嘉泰姆	6nZV嘉泰姆	1500nZV嘉泰姆	0.6nZV嘉泰姆	280nZV嘉泰姆	250nZV嘉泰姆	25nZV嘉泰姆
CXSD62131AnZV嘉泰姆	TDFN3x3-12nZV嘉泰姆	CMnZV嘉泰姆	2nZV嘉泰姆	1nZV嘉泰姆	2.7nZV嘉泰姆	6nZV嘉泰姆	1500nZV嘉泰姆	0.6nZV嘉泰姆	280nZV嘉泰姆	250nZV嘉泰姆
CXSD62131CnZV嘉泰姆	TDFN 3x3 12nZV嘉泰姆	CMnZV嘉泰姆	2nZV嘉泰姆	1nZV嘉泰姆	3nZV嘉泰姆	5.5nZV嘉泰姆	1500nZV嘉泰姆	0.6nZV嘉泰姆	280nZV嘉泰姆	250nZV嘉泰姆	30nZV嘉泰姆
CXSD62132nZV嘉泰姆	TQFN3x3-20nZV嘉泰姆	CMnZV嘉泰姆	3nZV嘉泰姆	2nZV嘉泰姆	2.9nZV嘉泰姆	5.5nZV嘉泰姆	1500nZV嘉泰姆	0.6nZV嘉泰姆	-nZV嘉泰姆	-nZV嘉泰姆	300nZV嘉泰姆
CXSD62133nZV嘉泰姆	TDFN2x2-8nZV嘉泰姆	CMnZV嘉泰姆	1nZV嘉泰姆	1nZV嘉泰姆	3.3nZV嘉泰姆	8nZV嘉泰姆	1500nZV嘉泰姆	0.6nZV嘉泰姆	280nZV嘉泰姆	250nZV嘉泰姆	25nZV嘉泰姆
CXSD62134nZV嘉泰姆	SOP-8nZV嘉泰姆	CMnZV嘉泰姆	1nZV嘉泰姆	2nZV嘉泰姆	4.5nZV嘉泰姆	24nZV嘉泰姆	340nZV嘉泰姆	0.925nZV嘉泰姆	110nZV嘉泰姆	110nZV嘉泰姆	1900nZV嘉泰姆
CXSD62135nZV嘉泰姆	SOP-8PnZV嘉泰姆	CMnZV嘉泰姆	1nZV嘉泰姆	3nZV嘉泰姆	4.5nZV嘉泰姆	24nZV嘉泰姆	340nZV嘉泰姆	0.925nZV嘉泰姆	110nZV嘉泰姆	110nZV嘉泰姆	1900nZV嘉泰姆
CXSD62136nZV嘉泰姆	SOP-8nZV嘉泰姆	CMnZV嘉泰姆	1nZV嘉泰姆	2nZV嘉泰姆	4.5nZV嘉泰姆	24nZV嘉泰姆	340nZV嘉泰姆	0.92nZV嘉泰姆	130nZV嘉泰姆	130nZV嘉泰姆	1900nZV嘉泰姆
nZV嘉泰姆

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