2.5V至5.5V的输入电压1.5MHz恒定频率高效单片同步降压稳压器CXSD62328提供高达2A输出负载电流强制连续脉宽调制模式操作

CXSD62328是一种高效的单片同步降压稳压器，采用1.5MHz恒定频率、电流模式架构。该装置可调，固定输出电压为1.2V、1.8V和3.3V，非常适用于单电池锂离子电池电流高达2A的便携式设备。CXSD62328还可以在100%工作循环下运行，以实现低损耗操作，延长便携式系统的电池寿命，而轻负载操作为噪声敏感应用提供非常低的输出纹波

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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The CXSD62328 is a high efficiency monolithic synchronous step-down regulator using 1.5MHz constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.2V, 1.8V and 3.3V. It is ideal for portable equipment requiring very high current up to 2A from single-cell Lithium-ion batteries.

The CXSD62328 also can run at 100% duty cycle for low dropout operation, extending battery life in portable systems while light load operation provides very low output ripple for noise sensitive applications. It can supply up to 2A output load current from a 2.5V to 5.5V input voltage and the output voltage can be regulated as low as 0.6V. The high switching frequency (1.5MHz) minimizes the size of external components while keeping switching losses low. The internal slope compensation setting allows the device to operate with smaller inductor values to optimize size and provide efficient operation.

The CXSD62328 is available in Green TDFN-3×3-10L package and is rated over the -40℃ to +85℃ temperature range.

   产品特点 返回TOP

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• Forced Continuous PWM Mode Operation
• High Efficiency: Up to 95%
• 2.5V to 5.5V Input Voltage Range
• 1.5MHz Constant Frequency Operation
• 2A Output Current
• 1.2V, 1.8V and 3.3V Fixed and Adjustable
   Output Voltages
• 100% Duty Cycle for Lowest Dropout
• ≤ 1μA Shutdown Current
• 0.6V Reference Allows Low Output Voltages
• Low R_DS(ON) Internal Switches: 0.135Ω
• Allows Use of Ceramic Capacitors
• Current Mode Control for Excellent Line and
    Load Transient Response
• Internal Soft-Start
• Short Circuit and Thermal Protection
• -40℃ to +85℃ Operating Temperature Range
• Available in Green TDFN-3×3-10L Package

   应用范围 返回TOP

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PDA, Pocket PC and Smart Phones
USB Powered Modems
CPUs and DSPs
PC Cards and Notebooks
Cellular Phones
Digital Cameras
DSP Core Supplies
Portable Instruments

   技术规格书（产品PDF) 返回TOP 

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     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！

 

产品封装图 返回TOP

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电路原理图 返回TOP

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同步整流降压转换器
Product	CH	Enable	VCC (Min)V	VCC (Max)V	VOUT(V)	IOUT(mA)	Frequency (kHz)	Iq (mA)	SHDN  Iq(μA)	Package
CXSD62327	1	L	3	5.5	adj	3000	adj(300 to  2000)	0.41	2	TDFN-3x3-10L
CXSD62328	1	H	2.5	5.5	3.3/adj	2000	1400	0.3	2	TDFN-3x3-10L
CXSD62329	1	H	2.5	5.5	1.2/1.8/3.3/adj	800	1600	0.03	1	TSOT-23-5
CXSD62330	1	H	2.5	5.5	1.2/1.8/3.3/adj	800	1600	0.03	1	TSOT-23-5 TDFN-2x2-6L
CXSD62331	1	H	2.5	5.5	1.2/1.8/3.3/adj	2000	1400	0.055	2	TDFN-3x3-10L
CXSD62332	1	H	2.7	5.5	adj	1200	1600	0.03	1	TDFN-3x3-10L
CXSD62333	1	H	2.7	5.5	adj	1200	1600	0.03	1	TDFN-2x3-8L
CXSD62334	1	H	2.5	5.5	adj	600	6000	0.022	1	TDFN-2x2-6L
CXSD62335	1	H	2.5	5.5	0.6/0.8/1.0/1.1/1.15 /1.2/1.5/1.6/1.8/2.5/ 2.8/3.0/3.3	600	6000	0.022	1	TDFN-2x2-6L   WLCSP-1.21x0.81-6B
非同步降压转换器
Product	CH	Enable	VCC (Min)V	VCC MAX(V)	VOUT(V)	IOUT(mA)	Frequency (kHz)	Iq (mA)	SHDN  Iq(μA)	Package
CXSD62336	1	H	4.5	28.5	adj	3000	385	0.8	18	SOIC-8(EP)
CXSD62337	1	H	4.5	28.5	adj	3000	1400	0.8	18	SOIC-8(EP)
CXSD62338	1	H	4.5	38	adj	2000	385	0.8	18	SOIC-8(EP)
CXSD62339	1	H	4.5	38	adj	2000	1400	0.8	18	SOIC-8(EP)
CXSD62340	1	H	4.5	18	adj	3000	1400	0.8	18	SOIC-8(EP)