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：123

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J99嘉泰姆

1.产品概述         2.产品特点J99嘉泰姆
3.应用范围       4.下载产品资料PDF文档 J99嘉泰姆
5.产品封装图                     6.电路原理图             J99嘉泰姆
7.功能概述       8.相关产品J99嘉泰姆

一,产品概述(General Description) J99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 J99嘉泰姆

applications. 100%duty cycle provides low dropout operation, extending battery J99嘉泰姆

life in portable electrical devices.The internally fixed 1.5MHz operating frequencyJ99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.J99嘉泰姆

The CXSD62125 CXSD62125A is available in SOT-23-5/TSOT-23-5A packages.J99嘉泰姆
二.产品特点(Features)J99嘉泰姆
1A Output CurrentJ99嘉泰姆
Wide 2.7V~6.0V Input VoltageJ99嘉泰姆
Fixed 1.5MHz Switching FrequencyJ99嘉泰姆
Low Dropout Operating at 100% Duty CycleJ99嘉泰姆
25μA Quiescent CurrentJ99嘉泰姆
Integrate Synchronous RectifierJ99嘉泰姆
0.6V Reference VoltageJ99嘉泰姆
Current-Mode Operation with InternalJ99嘉泰姆
CompensationJ99嘉泰姆
- Stable with Ceramic Output CapacitorsJ99嘉泰姆
- Fast Line Transient ResponseJ99嘉泰姆
Short-Circuit ProtectionJ99嘉泰姆
Over-Temperature Protection with HysteresisJ99嘉泰姆
Available in SOT-23-5/TSOT-23-5A PackagesJ99嘉泰姆
Lead Free and Green Devices Available (RoHS Compliant)J99嘉泰姆
三,应用范围 (Applications)J99嘉泰姆

HD STBJ99嘉泰姆

BT MouseJ99嘉泰姆
PND InstrumentJ99嘉泰姆
Portable InstrumentJ99嘉泰姆
四.下载产品资料PDF文档 J99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！J99嘉泰姆

QQ截图20160419174301.jpg J99嘉泰姆

五,产品封装图 (Package)J99嘉泰姆

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六.电路原理图J99嘉泰姆

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七,功能概述J99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:J99嘉泰姆
PD ≅ IOUT2 x (RP-FET x D+RN-FET x (1-D))J99嘉泰姆
The temperature rise is given by:J99嘉泰姆
TR = (PD)(èJA)J99嘉泰姆
Where PD is the power dissipated by the regulator, D isJ99嘉泰姆
duty cycle of main switchJ99嘉泰姆
D = VOUT/VINJ99嘉泰姆
The èJA is the thermal resistance from the junction of theJ99嘉泰姆
die to the ambient temperature. The junction temperature,J99嘉泰姆
TJ, is given by:J99嘉泰姆
TJ = TA + TRJ99嘉泰姆
Where TA is the ambient temperature.
Layout ConsiderationJ99嘉泰姆
For all switching power supplies, the layout is an important step in the design; especially at high peak currentsJ99嘉泰姆
and switching frequencies. If the layout is not carefully done, the regulator might show noise problems and dutyJ99嘉泰姆
cycle jitter.J99嘉泰姆
1. The input capacitor should be placed close to the VIN and GND. Connecting the capacitor and VIN/GND withJ99嘉泰姆
short and wide trace without any via holes for good input voltage filtering. The distance between VIN/GNDJ99嘉泰姆
to capacitor less than 2mm respectively is recommended.J99嘉泰姆
2. To minimize copper trace connections that can inject noise into the system, the inductor should be placedJ99嘉泰姆
as close as possible to the SW pin to minimize the noise coupling into other circuits.J99嘉泰姆
3. The output capacitor should be place closed to converter VOUT and GND.J99嘉泰姆
4. Since the feedback pin and network is a high impedance circuit the feedback network should be routedJ99嘉泰姆
away from the inductor. The feedback pin and feedback network should be shielded with a ground planeJ99嘉泰姆
or trace to minimize noise coupling into this circuit.J99嘉泰姆
5. A star ground connection or ground plane minimizes ground shifts and noise is recommended.J99嘉泰姆
八,相关产品 更多同类产品.......J99嘉泰姆

Switching Regulator > Buck ConverterJ99嘉泰姆
Part_No J99嘉泰姆	PackageJ99嘉泰姆	ArchitectuJ99嘉泰姆	No.ofJ99嘉泰姆 PWM J99嘉泰姆 OutpuJ99嘉泰姆	DriveJ99嘉泰姆 LoutJ99嘉泰姆 (A) J99嘉泰姆	Vin(V) J99嘉泰姆		FmaxJ99嘉泰姆 Khz J99嘉泰姆	Vref J99嘉泰姆 (V) J99嘉泰姆	R-Top (milohm) J99嘉泰姆	R-Sync (milohm) J99嘉泰姆	Iq (No load) (uA) J99嘉泰姆
Part_No J99嘉泰姆	PackageJ99嘉泰姆	ArchitectuJ99嘉泰姆	No.ofJ99嘉泰姆 PWM J99嘉泰姆 OutpuJ99嘉泰姆	DriveJ99嘉泰姆 LoutJ99嘉泰姆 (A) J99嘉泰姆	minJ99嘉泰姆	maxJ99嘉泰姆	FmaxJ99嘉泰姆 Khz J99嘉泰姆	Vref J99嘉泰姆 (V) J99嘉泰姆	R-Top (milohm) J99嘉泰姆	R-Sync (milohm) J99嘉泰姆	Iq (No load) (uA) J99嘉泰姆
CXSD62122J99嘉泰姆	TQFN5x6-28J99嘉泰姆	CMJ99嘉泰姆	1J99嘉泰姆	5J99嘉泰姆	4.5J99嘉泰姆	26J99嘉泰姆	380J99嘉泰姆	0.8J99嘉泰姆	50J99嘉泰姆	20J99嘉泰姆	1000J99嘉泰姆
CXSD62123J99嘉泰姆	SOP-8J99嘉泰姆	CMJ99嘉泰姆	1J99嘉泰姆	2J99嘉泰姆	4.5J99嘉泰姆	26J99嘉泰姆	380J99嘉泰姆	0.8J99嘉泰姆	100J99嘉泰姆		1000J99嘉泰姆
CXSD62124J99嘉泰姆	SOP-8PJ99嘉泰姆	CMJ99嘉泰姆	1J99嘉泰姆	4J99嘉泰姆	4.5J99嘉泰姆	26J99嘉泰姆	380J99嘉泰姆	0.8J99嘉泰姆	80J99嘉泰姆		1000J99嘉泰姆
CXSD62125J99嘉泰姆	SOT23-5\|TSOT23-5J99嘉泰姆	CMJ99嘉泰姆	1J99嘉泰姆	1J99嘉泰姆	2.7J99嘉泰姆	6J99嘉泰姆	1500J99嘉泰姆	0.6J99嘉泰姆	280J99嘉泰姆	250J99嘉泰姆	25J99嘉泰姆
CXSD62125AJ99嘉泰姆	SOT23-5J99嘉泰姆	CMJ99嘉泰姆	1J99嘉泰姆	1J99嘉泰姆	2.7J99嘉泰姆	6J99嘉泰姆	1500J99嘉泰姆	0.6J99嘉泰姆	280J99嘉泰姆	250J99嘉泰姆
CXSD62126J99嘉泰姆	SOP-8J99嘉泰姆	CMJ99嘉泰姆	1J99嘉泰姆	3J99嘉泰姆	4.3J99嘉泰姆	14J99嘉泰姆	500J99嘉泰姆	0.8J99嘉泰姆	70J99嘉泰姆	70J99嘉泰姆	500J99嘉泰姆
CXSD62127J99嘉泰姆	SOP-8PJ99嘉泰姆	CMJ99嘉泰姆	1J99嘉泰姆	3J99嘉泰姆	4.3J99嘉泰姆	14J99嘉泰姆	500J99嘉泰姆	0.8J99嘉泰姆	55J99嘉泰姆	45J99嘉泰姆	500J99嘉泰姆
CXSD62128BJ99嘉泰姆	TDFN3x3-10J99嘉泰姆			3J99嘉泰姆	2.6J99嘉泰姆	5.5J99嘉泰姆	2000J99嘉泰姆	0.8J99嘉泰姆	110J99嘉泰姆	110J99嘉泰姆	460J99嘉泰姆
CXSD62129J99嘉泰姆	TDFN3x3-10J99嘉泰姆	CMJ99嘉泰姆	2J99嘉泰姆	1J99嘉泰姆	2.7J99嘉泰姆	6J99嘉泰姆	1500J99嘉泰姆	0.6J99嘉泰姆	280J99嘉泰姆	250J99嘉泰姆	500J99嘉泰姆
CXSD62129AJ99嘉泰姆	TDFN3x3-10J99嘉泰姆	CMJ99嘉泰姆	2J99嘉泰姆	1J99嘉泰姆	2.7J99嘉泰姆	6J99嘉泰姆	1500J99嘉泰姆	0.6J99嘉泰姆	280J99嘉泰姆	250J99嘉泰姆
CXSD62130J99嘉泰姆	TDFN2x2-6J99嘉泰姆	CMJ99嘉泰姆	1J99嘉泰姆	1J99嘉泰姆	2.7J99嘉泰姆	6J99嘉泰姆	1500J99嘉泰姆	0.6J99嘉泰姆	280J99嘉泰姆	250J99嘉泰姆	25J99嘉泰姆
CXSD62130AJ99嘉泰姆	TDFN2x2-6J99嘉泰姆	CMJ99嘉泰姆	1J99嘉泰姆	1J99嘉泰姆	2.7J99嘉泰姆	6J99嘉泰姆	1500J99嘉泰姆	0.6J99嘉泰姆	280J99嘉泰姆	250J99嘉泰姆
CXSD62131J99嘉泰姆	TDFN3x3-12J99嘉泰姆	CMJ99嘉泰姆	2J99嘉泰姆	1J99嘉泰姆	2.7J99嘉泰姆	6J99嘉泰姆	1500J99嘉泰姆	0.6J99嘉泰姆	280J99嘉泰姆	250J99嘉泰姆	25J99嘉泰姆
CXSD62131AJ99嘉泰姆	TDFN3x3-12J99嘉泰姆	CMJ99嘉泰姆	2J99嘉泰姆	1J99嘉泰姆	2.7J99嘉泰姆	6J99嘉泰姆	1500J99嘉泰姆	0.6J99嘉泰姆	280J99嘉泰姆	250J99嘉泰姆
CXSD62131CJ99嘉泰姆	TDFN 3x3 12J99嘉泰姆	CMJ99嘉泰姆	2J99嘉泰姆	1J99嘉泰姆	3J99嘉泰姆	5.5J99嘉泰姆	1500J99嘉泰姆	0.6J99嘉泰姆	280J99嘉泰姆	250J99嘉泰姆	30J99嘉泰姆
CXSD62132J99嘉泰姆	TQFN3x3-20J99嘉泰姆	CMJ99嘉泰姆	3J99嘉泰姆	2J99嘉泰姆	2.9J99嘉泰姆	5.5J99嘉泰姆	1500J99嘉泰姆	0.6J99嘉泰姆	-J99嘉泰姆	-J99嘉泰姆	300J99嘉泰姆
CXSD62133J99嘉泰姆	TDFN2x2-8J99嘉泰姆	CMJ99嘉泰姆	1J99嘉泰姆	1J99嘉泰姆	3.3J99嘉泰姆	8J99嘉泰姆	1500J99嘉泰姆	0.6J99嘉泰姆	280J99嘉泰姆	250J99嘉泰姆	25J99嘉泰姆
CXSD62134J99嘉泰姆	SOP-8J99嘉泰姆	CMJ99嘉泰姆	1J99嘉泰姆	2J99嘉泰姆	4.5J99嘉泰姆	24J99嘉泰姆	340J99嘉泰姆	0.925J99嘉泰姆	110J99嘉泰姆	110J99嘉泰姆	1900J99嘉泰姆
CXSD62135J99嘉泰姆	SOP-8PJ99嘉泰姆	CMJ99嘉泰姆	1J99嘉泰姆	3J99嘉泰姆	4.5J99嘉泰姆	24J99嘉泰姆	340J99嘉泰姆	0.925J99嘉泰姆	110J99嘉泰姆	110J99嘉泰姆	1900J99嘉泰姆
CXSD62136J99嘉泰姆	SOP-8J99嘉泰姆	CMJ99嘉泰姆	1J99嘉泰姆	2J99嘉泰姆	4.5J99嘉泰姆	24J99嘉泰姆	340J99嘉泰姆	0.92J99嘉泰姆	130J99嘉泰姆	130J99嘉泰姆	1900J99嘉泰姆
J99嘉泰姆

上一篇：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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