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：135

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7ND嘉泰姆

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

一,产品概述(General Description) 7ND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 7ND嘉泰姆

applications. 100%duty cycle provides low dropout operation, extending battery 7ND嘉泰姆

life in portable electrical devices.The internally fixed 1.5MHz operating frequency7ND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.7ND嘉泰姆

The CXSD62125 CXSD62125A is available in SOT-23-5/TSOT-23-5A packages.7ND嘉泰姆
二.产品特点(Features)7ND嘉泰姆
1A Output Current7ND嘉泰姆
Wide 2.7V~6.0V Input Voltage7ND嘉泰姆
Fixed 1.5MHz Switching Frequency7ND嘉泰姆
Low Dropout Operating at 100% Duty Cycle7ND嘉泰姆
25μA Quiescent Current7ND嘉泰姆
Integrate Synchronous Rectifier7ND嘉泰姆
0.6V Reference Voltage7ND嘉泰姆
Current-Mode Operation with Internal7ND嘉泰姆
Compensation7ND嘉泰姆
- Stable with Ceramic Output Capacitors7ND嘉泰姆
- Fast Line Transient Response7ND嘉泰姆
Short-Circuit Protection7ND嘉泰姆
Over-Temperature Protection with Hysteresis7ND嘉泰姆
Available in SOT-23-5/TSOT-23-5A Packages7ND嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)7ND嘉泰姆
三,应用范围 (Applications)7ND嘉泰姆

HD STB7ND嘉泰姆

BT Mouse7ND嘉泰姆
PND Instrument7ND嘉泰姆
Portable Instrument7ND嘉泰姆
四.下载产品资料PDF文档 7ND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！7ND嘉泰姆

QQ截图20160419174301.jpg 7ND嘉泰姆

五,产品封装图 (Package)7ND嘉泰姆

7ND嘉泰姆

六.电路原理图7ND嘉泰姆

7ND嘉泰姆

七,功能概述7ND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:7ND嘉泰姆
PD ≅ IOUT2 x (RP-FET x D+RN-FET x (1-D))7ND嘉泰姆
The temperature rise is given by:7ND嘉泰姆
TR = (PD)(èJA)7ND嘉泰姆
Where PD is the power dissipated by the regulator, D is7ND嘉泰姆
duty cycle of main switch7ND嘉泰姆
D = VOUT/VIN7ND嘉泰姆
The èJA is the thermal resistance from the junction of the7ND嘉泰姆
die to the ambient temperature. The junction temperature,7ND嘉泰姆
TJ, is given by:7ND嘉泰姆
TJ = TA + TR7ND嘉泰姆
Where TA is the ambient temperature.
Layout Consideration7ND嘉泰姆
For all switching power supplies, the layout is an important step in the design; especially at high peak currents7ND嘉泰姆
and switching frequencies. If the layout is not carefully done, the regulator might show noise problems and duty7ND嘉泰姆
cycle jitter.7ND嘉泰姆
1. The input capacitor should be placed close to the VIN and GND. Connecting the capacitor and VIN/GND with7ND嘉泰姆
short and wide trace without any via holes for good input voltage filtering. The distance between VIN/GND7ND嘉泰姆
to capacitor less than 2mm respectively is recommended.7ND嘉泰姆
2. To minimize copper trace connections that can inject noise into the system, the inductor should be placed7ND嘉泰姆
as close as possible to the SW pin to minimize the noise coupling into other circuits.7ND嘉泰姆
3. The output capacitor should be place closed to converter VOUT and GND.7ND嘉泰姆
4. Since the feedback pin and network is a high impedance circuit the feedback network should be routed7ND嘉泰姆
away from the inductor. The feedback pin and feedback network should be shielded with a ground plane7ND嘉泰姆
or trace to minimize noise coupling into this circuit.7ND嘉泰姆
5. A star ground connection or ground plane minimizes ground shifts and noise is recommended.7ND嘉泰姆
八,相关产品 更多同类产品.......7ND嘉泰姆

Switching Regulator > Buck Converter7ND嘉泰姆
Part_No 7ND嘉泰姆	Package7ND嘉泰姆	Architectu7ND嘉泰姆	No.of7ND嘉泰姆 PWM 7ND嘉泰姆 Outpu7ND嘉泰姆	Drive7ND嘉泰姆 Lout7ND嘉泰姆 (A) 7ND嘉泰姆	Vin(V) 7ND嘉泰姆		Fmax7ND嘉泰姆 Khz 7ND嘉泰姆	Vref 7ND嘉泰姆 (V) 7ND嘉泰姆	R-Top (milohm) 7ND嘉泰姆	R-Sync (milohm) 7ND嘉泰姆	Iq (No load) (uA) 7ND嘉泰姆
Part_No 7ND嘉泰姆	Package7ND嘉泰姆	Architectu7ND嘉泰姆	No.of7ND嘉泰姆 PWM 7ND嘉泰姆 Outpu7ND嘉泰姆	Drive7ND嘉泰姆 Lout7ND嘉泰姆 (A) 7ND嘉泰姆	min7ND嘉泰姆	max7ND嘉泰姆	Fmax7ND嘉泰姆 Khz 7ND嘉泰姆	Vref 7ND嘉泰姆 (V) 7ND嘉泰姆	R-Top (milohm) 7ND嘉泰姆	R-Sync (milohm) 7ND嘉泰姆	Iq (No load) (uA) 7ND嘉泰姆
CXSD621227ND嘉泰姆	TQFN5x6-287ND嘉泰姆	CM7ND嘉泰姆	17ND嘉泰姆	57ND嘉泰姆	4.57ND嘉泰姆	267ND嘉泰姆	3807ND嘉泰姆	0.87ND嘉泰姆	507ND嘉泰姆	207ND嘉泰姆	10007ND嘉泰姆
CXSD621237ND嘉泰姆	SOP-87ND嘉泰姆	CM7ND嘉泰姆	17ND嘉泰姆	27ND嘉泰姆	4.57ND嘉泰姆	267ND嘉泰姆	3807ND嘉泰姆	0.87ND嘉泰姆	1007ND嘉泰姆		10007ND嘉泰姆
CXSD621247ND嘉泰姆	SOP-8P7ND嘉泰姆	CM7ND嘉泰姆	17ND嘉泰姆	47ND嘉泰姆	4.57ND嘉泰姆	267ND嘉泰姆	3807ND嘉泰姆	0.87ND嘉泰姆	807ND嘉泰姆		10007ND嘉泰姆
CXSD621257ND嘉泰姆	SOT23-5\|TSOT23-57ND嘉泰姆	CM7ND嘉泰姆	17ND嘉泰姆	17ND嘉泰姆	2.77ND嘉泰姆	67ND嘉泰姆	15007ND嘉泰姆	0.67ND嘉泰姆	2807ND嘉泰姆	2507ND嘉泰姆	257ND嘉泰姆
CXSD62125A7ND嘉泰姆	SOT23-57ND嘉泰姆	CM7ND嘉泰姆	17ND嘉泰姆	17ND嘉泰姆	2.77ND嘉泰姆	67ND嘉泰姆	15007ND嘉泰姆	0.67ND嘉泰姆	2807ND嘉泰姆	2507ND嘉泰姆
CXSD621267ND嘉泰姆	SOP-87ND嘉泰姆	CM7ND嘉泰姆	17ND嘉泰姆	37ND嘉泰姆	4.37ND嘉泰姆	147ND嘉泰姆	5007ND嘉泰姆	0.87ND嘉泰姆	707ND嘉泰姆	707ND嘉泰姆	5007ND嘉泰姆
CXSD621277ND嘉泰姆	SOP-8P7ND嘉泰姆	CM7ND嘉泰姆	17ND嘉泰姆	37ND嘉泰姆	4.37ND嘉泰姆	147ND嘉泰姆	5007ND嘉泰姆	0.87ND嘉泰姆	557ND嘉泰姆	457ND嘉泰姆	5007ND嘉泰姆
CXSD62128B7ND嘉泰姆	TDFN3x3-107ND嘉泰姆			37ND嘉泰姆	2.67ND嘉泰姆	5.57ND嘉泰姆	20007ND嘉泰姆	0.87ND嘉泰姆	1107ND嘉泰姆	1107ND嘉泰姆	4607ND嘉泰姆
CXSD621297ND嘉泰姆	TDFN3x3-107ND嘉泰姆	CM7ND嘉泰姆	27ND嘉泰姆	17ND嘉泰姆	2.77ND嘉泰姆	67ND嘉泰姆	15007ND嘉泰姆	0.67ND嘉泰姆	2807ND嘉泰姆	2507ND嘉泰姆	5007ND嘉泰姆
CXSD62129A7ND嘉泰姆	TDFN3x3-107ND嘉泰姆	CM7ND嘉泰姆	27ND嘉泰姆	17ND嘉泰姆	2.77ND嘉泰姆	67ND嘉泰姆	15007ND嘉泰姆	0.67ND嘉泰姆	2807ND嘉泰姆	2507ND嘉泰姆
CXSD621307ND嘉泰姆	TDFN2x2-67ND嘉泰姆	CM7ND嘉泰姆	17ND嘉泰姆	17ND嘉泰姆	2.77ND嘉泰姆	67ND嘉泰姆	15007ND嘉泰姆	0.67ND嘉泰姆	2807ND嘉泰姆	2507ND嘉泰姆	257ND嘉泰姆
CXSD62130A7ND嘉泰姆	TDFN2x2-67ND嘉泰姆	CM7ND嘉泰姆	17ND嘉泰姆	17ND嘉泰姆	2.77ND嘉泰姆	67ND嘉泰姆	15007ND嘉泰姆	0.67ND嘉泰姆	2807ND嘉泰姆	2507ND嘉泰姆
CXSD621317ND嘉泰姆	TDFN3x3-127ND嘉泰姆	CM7ND嘉泰姆	27ND嘉泰姆	17ND嘉泰姆	2.77ND嘉泰姆	67ND嘉泰姆	15007ND嘉泰姆	0.67ND嘉泰姆	2807ND嘉泰姆	2507ND嘉泰姆	257ND嘉泰姆
CXSD62131A7ND嘉泰姆	TDFN3x3-127ND嘉泰姆	CM7ND嘉泰姆	27ND嘉泰姆	17ND嘉泰姆	2.77ND嘉泰姆	67ND嘉泰姆	15007ND嘉泰姆	0.67ND嘉泰姆	2807ND嘉泰姆	2507ND嘉泰姆
CXSD62131C7ND嘉泰姆	TDFN 3x3 127ND嘉泰姆	CM7ND嘉泰姆	27ND嘉泰姆	17ND嘉泰姆	37ND嘉泰姆	5.57ND嘉泰姆	15007ND嘉泰姆	0.67ND嘉泰姆	2807ND嘉泰姆	2507ND嘉泰姆	307ND嘉泰姆
CXSD621327ND嘉泰姆	TQFN3x3-207ND嘉泰姆	CM7ND嘉泰姆	37ND嘉泰姆	27ND嘉泰姆	2.97ND嘉泰姆	5.57ND嘉泰姆	15007ND嘉泰姆	0.67ND嘉泰姆	-7ND嘉泰姆	-7ND嘉泰姆	3007ND嘉泰姆
CXSD621337ND嘉泰姆	TDFN2x2-87ND嘉泰姆	CM7ND嘉泰姆	17ND嘉泰姆	17ND嘉泰姆	3.37ND嘉泰姆	87ND嘉泰姆	15007ND嘉泰姆	0.67ND嘉泰姆	2807ND嘉泰姆	2507ND嘉泰姆	257ND嘉泰姆
CXSD621347ND嘉泰姆	SOP-87ND嘉泰姆	CM7ND嘉泰姆	17ND嘉泰姆	27ND嘉泰姆	4.57ND嘉泰姆	247ND嘉泰姆	3407ND嘉泰姆	0.9257ND嘉泰姆	1107ND嘉泰姆	1107ND嘉泰姆	19007ND嘉泰姆
CXSD621357ND嘉泰姆	SOP-8P7ND嘉泰姆	CM7ND嘉泰姆	17ND嘉泰姆	37ND嘉泰姆	4.57ND嘉泰姆	247ND嘉泰姆	3407ND嘉泰姆	0.9257ND嘉泰姆	1107ND嘉泰姆	1107ND嘉泰姆	19007ND嘉泰姆
CXSD621367ND嘉泰姆	SOP-87ND嘉泰姆	CM7ND嘉泰姆	17ND嘉泰姆	27ND嘉泰姆	4.57ND嘉泰姆	247ND嘉泰姆	3407ND嘉泰姆	0.927ND嘉泰姆	1307ND嘉泰姆	1307ND嘉泰姆	19007ND嘉泰姆
7ND嘉泰姆

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