3A, Synchronous Step-Down Converter 3A同步降压型DC-DC变换器CXSD62267 是一款采用1 MHz频率，电流模的降压型直流-直流变换器，提供高达3A的输出电流。该芯片的工作电压范围从2.7V到5.5V，输出电压从0.6V到5V，芯片内部集成了主开关管和同步管以提高效率，不需外接肖特基二极管。CXSD62267可以通过外部引脚设置为强制脉宽调制模式

发布时间：2020-04-06 09:43:38 浏览次数：732 作者：嘉泰姆

摘要：3A, Synchronous Step-Down Converter 3A同步降压型DC-DC变换器CXSD62267 是一款采用1 MHz频率，电流模的降压型直流-直流变换器，提供高达3A的输出电流。该芯片的工作电压范围从2.7V到5.5V，输出电压从0.6V到5V，芯片内部集成了主开关管和同步管以提高效率，不需外接肖特基二极管。CXSD62267可以通过外部引脚设置为强制脉宽调制模式

CXSD62267 是一款采用1 MHz频率，电流模的降压型直流-直流变换器，提供高达3A的输出电流。该芯片的工作电压范围从2.7V到5.5V，输出电压从0.6V到5V，芯片内部集成了主开关管和同步管以提高效率，不需外接肖特基二极管。CXSD62267可以通过外部引脚设置为强制脉宽调制模式（FPWM）或脉冲跳跃模式（PSM），FPWM时提供很低的输出纹波，适合于噪声敏感的应用场合，而PSM可以在轻负载时减少开关损耗来提高效率。CXSD62267具有短路保护和过温保护功能，可以提高系统的可靠性，软启动电路用以减小启动过程中的输入浪涌电流。CXSD62267提供具有散热片的3mm×3mm 的TDFN-10封装和SOP-8封装。The CXSD62267 is a 1 MHz fixed frequency synchronous, current-mode, step-down dc-dc converter capable of providing up to 3A output current. The CXSD62267 operates from an input range of 2.7V to 5.5V and provides a regulated output voltage from 0.6V to 5V. The internal synchronous power switch improves efficiency and eliminates the need for an external Schottky diode. The CXSD62267 can be externally set for either forced PWM continuous mode or pulse skipping mode. Forced PWM operation provides very low output ripple voltage for noise sensitive applications while pulse skipping operation improves light load efficiency by reducing switching loss. The CXSD62267features short circuit and thermal protection circuits to improve system reliability. Internally soft-start avoids input inrush current during startup. The CXSD62267is available in TDFN 3mm× 3mm 10-pin package with the exposed pad.

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•2.7V至5.5V的输入电压范围

•效率高达96%C3r嘉泰姆

•高达3A的输出电流

•69/45mΩ 的集成主开关管和同步管C3r嘉泰姆

•1MHz固定开关频率

•100%占空比低压降工作C3r嘉泰姆

•短路保护和过温保护

•集成UVLO 和 Power Good功能C3r嘉泰姆

•良好的线性瞬态和负载瞬态响应

•提供3mm×3mm 的TDFN-10封装和SOP-8封装C3r嘉泰姆

•符合RoHS规范及Pb-FreeC3r嘉泰姆

2.7V to 5.5V Input Voltage RangeC3r嘉泰姆

High Efficiency up to 96%C3r嘉泰姆

3A Available Load CurrentC3r嘉泰姆

69/45m Integrated PFET/NFET SwitchesC3r嘉泰姆

1MHz Switching FrequencyC3r嘉泰姆

100% Duty Cycle Low Dropout OperationC3r嘉泰姆

Short Circuit and Thermal ProtectionC3r嘉泰姆

Integrated UVLO and Power GoodC3r嘉泰姆

Excellent Line and Load Transient ResponseC3r嘉泰姆

Available in 10-Pin 3mm′ 3mm TDFN PackageC3r嘉泰姆

RoHS Compliant and 100% Lead(Pb)-FreeC3r嘉泰姆

Halogen-FreeC3r嘉泰姆

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DC/DC开关稳压器 > 降压转换器/控制器</span>C3r嘉泰姆
Part C3r嘉泰姆 NumberC3r嘉泰姆	remarkC3r嘉泰姆	Iout C3r嘉泰姆 (mA)C3r嘉泰姆	Vin C3r嘉泰姆 (V)C3r嘉泰姆	Vout C3r嘉泰姆 (V)C3r嘉泰姆	IQ C3r嘉泰姆 (μA)C3r嘉泰姆	FB C3r嘉泰姆 (V)C3r嘉泰姆	Freq. C3r嘉泰姆 (KHz)C3r嘉泰姆	Peak C3r嘉泰姆 Efficency C3r嘉泰姆 (%)C3r嘉泰姆	PackageC3r嘉泰姆
CXSD62255C3r嘉泰姆	6A, 30V, Synchronous Step-Down Converter with Programmable FrequencyC3r嘉泰姆	6000C3r嘉泰姆	2.7~30C3r嘉泰姆	0.8~20C3r嘉泰姆	1000C3r嘉泰姆	0.8C3r嘉泰姆	100~1000C3r嘉泰姆	>95C3r嘉泰姆	TQFN-23LC3r嘉泰姆
CXSD62256C3r嘉泰姆	2A, 30V, 340KHz Synchronous Step-Down ConverterC3r嘉泰姆	2000C3r嘉泰姆	4.5~30C3r嘉泰姆	0.92~20C3r嘉泰姆	1000C3r嘉泰姆	0.92C3r嘉泰姆	340C3r嘉泰姆	>94C3r嘉泰姆	SOP-8C3r嘉泰姆
CXSD62257C3r嘉泰姆	3A, 30V, 340KHz Synchronous Step-Down ConverterC3r嘉泰姆	3000C3r嘉泰姆	4.5~30C3r嘉泰姆	0.92~20C3r嘉泰姆	1000C3r嘉泰姆	0.92C3r嘉泰姆	340C3r嘉泰姆	>94C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62258C3r嘉泰姆	CC/CV Mode Synchronous Step-Down ConverterC3r嘉泰姆	4000C3r嘉泰姆	8~36C3r嘉泰姆	0.6~12C3r嘉泰姆	1000C3r嘉泰姆	0.6C3r嘉泰姆	80~800C3r嘉泰姆	>95C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62259C3r嘉泰姆	Dual-Channel CC/CV Mode Synchronous Step-Down ControllerC3r嘉泰姆	5000C3r嘉泰姆	8~36C3r嘉泰姆	0.6~12C3r嘉泰姆	1000C3r嘉泰姆	0.6C3r嘉泰姆	150C3r嘉泰姆	>95C3r嘉泰姆	MSOP-10C3r嘉泰姆
CXSD62260C3r嘉泰姆	CC/CV Mode Synchronous Step-Down ConverterC3r嘉泰姆	4000C3r嘉泰姆	4.5~36C3r嘉泰姆	0.6~20C3r嘉泰姆	1000C3r嘉泰姆	0.6C3r嘉泰姆	80~800C3r嘉泰姆	>95C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62261C3r嘉泰姆	CC/CV Mode Synchronous Step-Down ConverterC3r嘉泰姆	4000C3r嘉泰姆	4.5~30C3r嘉泰姆	0.6~12C3r嘉泰姆	1000C3r嘉泰姆	0.6C3r嘉泰姆	80~800C3r嘉泰姆	>95C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62262C3r嘉泰姆	Dual-Channel CC/CV Mode Synchronous Step-Down ConverterC3r嘉泰姆	5000C3r嘉泰姆	8~36C3r嘉泰姆	0.6~12C3r嘉泰姆	1000C3r嘉泰姆	0.6C3r嘉泰姆	80~800C3r嘉泰姆	95C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62263C3r嘉泰姆	5A, CC/CV Mode Step-Down ConverterC3r嘉泰姆	5000C3r嘉泰姆	8~36C3r嘉泰姆	1.18~12C3r嘉泰姆	500C3r嘉泰姆	1.18C3r嘉泰姆	120C3r嘉泰姆	>95C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62264C3r嘉泰姆	CC/CV Mode Step-Down ConverterC3r嘉泰姆	3000C3r嘉泰姆	8~36C3r嘉泰姆	1.18~12C3r嘉泰姆	500C3r嘉泰姆	1.18C3r嘉泰姆	120C3r嘉泰姆	>95C3r嘉泰姆	SOP-8C3r嘉泰姆
CXSD62265C3r嘉泰姆	3A,40V,200KHz Step-Down ConverterC3r嘉泰姆	3000C3r嘉泰姆	4.75~40C3r嘉泰姆	0.92~15C3r嘉泰姆	550C3r嘉泰姆	0.92C3r嘉泰姆	200C3r嘉泰姆	>95C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62266C3r嘉泰姆	1.5MHz, 800mA Synchronous Step-Down Converter with Soft StartC3r嘉泰姆	800C3r嘉泰姆	2.5 ~ 5.5C3r嘉泰姆	0.6~VinC3r嘉泰姆	270C3r嘉泰姆	0.6C3r嘉泰姆	1500C3r嘉泰姆	> 96C3r嘉泰姆	TSOT23-5,SOT23-5C3r嘉泰姆
CXSD62267C3r嘉泰姆	3A, Synchronous Step-Down ConverterC3r嘉泰姆	3000C3r嘉泰姆	2.7~5.5C3r嘉泰姆	0.6~5C3r嘉泰姆	500C3r嘉泰姆	0.6C3r嘉泰姆	1000C3r嘉泰姆	>96C3r嘉泰姆	TDFN-10,SOP-8(EP)C3r嘉泰姆
CXSD62268C3r嘉泰姆	1A, 2.25MHz Synchronous Step-Down DC/DC RegulatorC3r嘉泰姆	1000C3r嘉泰姆	2.7~5.5C3r嘉泰姆	0.6~3.3C3r嘉泰姆	30C3r嘉泰姆	0.6C3r嘉泰姆	2250C3r嘉泰姆	>94C3r嘉泰姆	TDFN-6C3r嘉泰姆
CXSD62269C3r嘉泰姆	1.5MHz,1A Synchronous Step-Down Converter with Soft StartC3r嘉泰姆	1000C3r嘉泰姆	2.5 ~ 5.5C3r嘉泰姆	0.6~5C3r嘉泰姆	270C3r嘉泰姆	0.6C3r嘉泰姆	1500C3r嘉泰姆	> 96C3r嘉泰姆	TDFN-6,SOT23-5,TSOT23-5C3r嘉泰姆
CXSD62270C3r嘉泰姆	5A, 3MHz Synchronous Step-Down DC-DC with I2C Compatible InterfaceC3r嘉泰姆	5000C3r嘉泰姆	2.7~5.5C3r嘉泰姆	0.6~1.4C3r嘉泰姆	52C3r嘉泰姆	-C3r嘉泰姆	3000C3r嘉泰姆	-C3r嘉泰姆	WCSP-20C3r嘉泰姆
CXSD62271C3r嘉泰姆	1A, 2.25MHz Synchronous Step-Down DC/DC RegulatorC3r嘉泰姆	1000C3r嘉泰姆	2.7 ~ 5.5C3r嘉泰姆	0.6~VinC3r嘉泰姆	30C3r嘉泰姆	0.6C3r嘉泰姆	2250C3r嘉泰姆	> 95C3r嘉泰姆	TDFN-6,TSOT23-5C3r嘉泰姆
CXSD62272C3r嘉泰姆	Dual High-Efficiency 1.5MHz 1A PWM Step-Down DC-DC ConverterC3r嘉泰姆	1000 /1000C3r嘉泰姆	2.5 ~ 5.5C3r嘉泰姆	0.6~5C3r嘉泰姆	270C3r嘉泰姆	0.6C3r嘉泰姆	1500C3r嘉泰姆	> 96C3r嘉泰姆	TDFN-12C3r嘉泰姆
CXSD62273C3r嘉泰姆	Dual 1A, 2.25MHz Synchronous Step-Down DC/DC RegulatorC3r嘉泰姆	1000/1000C3r嘉泰姆	2.7 ~ 5.5C3r嘉泰姆	0.6~VinC3r嘉泰姆	45C3r嘉泰姆	0.6C3r嘉泰姆	2250C3r嘉泰姆	> 95C3r嘉泰姆	TDFN-10C3r嘉泰姆
CXSD62274C3r嘉泰姆	Dual 1A, 2.25MHz Synchronous Step-Down DC/DC RegulatorC3r嘉泰姆	1000/1000C3r嘉泰姆	2.7 ~ 5.5C3r嘉泰姆	0.6~VinC3r嘉泰姆	30C3r嘉泰姆	0.6C3r嘉泰姆	2250C3r嘉泰姆	> 95C3r嘉泰姆	TDFN-12C3r嘉泰姆
CXSD62275C3r嘉泰姆	1.2A,30V,1.2MHz Step-Down ConverterC3r嘉泰姆	1200C3r嘉泰姆	4.5 ~ 30C3r嘉泰姆	0.8~15C3r嘉泰姆	550C3r嘉泰姆	0.8C3r嘉泰姆	1200C3r嘉泰姆	> 92C3r嘉泰姆	SOT23-6C3r嘉泰姆
CXSD62276C3r嘉泰姆	1.5A, 2.25MHz Synchronous Step-Down DC/DC RegulatorC3r嘉泰姆	1500C3r嘉泰姆	2.7 ~ 5.5C3r嘉泰姆	0.6~VinC3r嘉泰姆	30C3r嘉泰姆	0.6C3r嘉泰姆	2250C3r嘉泰姆	> 95C3r嘉泰姆	TDFN-6C3r嘉泰姆
CXSD62277C3r嘉泰姆	1.5A,40V,200KHz Step-Down ConverterC3r嘉泰姆	1500C3r嘉泰姆	4.75 ~ 40C3r嘉泰姆	0.92~15C3r嘉泰姆	550C3r嘉泰姆	0.92C3r嘉泰姆	200C3r嘉泰姆	> 95C3r嘉泰姆	SOP-8C3r嘉泰姆
CXSD62278C3r嘉泰姆	2A, Synchronous Step-Down ConverterC3r嘉泰姆	2000C3r嘉泰姆	2.7 ~ 5.5C3r嘉泰姆	0.8~5C3r嘉泰姆	500C3r嘉泰姆	0.8C3r嘉泰姆	1000C3r嘉泰姆	> 96C3r嘉泰姆	SOP-8C3r嘉泰姆
CXSD62279C3r嘉泰姆	2A, 30V, 340KHz SynchronousStep-Down ConverterC3r嘉泰姆	2000C3r嘉泰姆	4.5 ~ 30C3r嘉泰姆	0.923~20C3r嘉泰姆	450C3r嘉泰姆	0.923C3r嘉泰姆	340C3r嘉泰姆	>93C3r嘉泰姆	SOP-8C3r嘉泰姆
CXSD62280C3r嘉泰姆	2A, 30V, 340KHz Synchronous Step-Down ConverterC3r嘉泰姆	2000C3r嘉泰姆	4.5~30C3r嘉泰姆	0.923~20C3r嘉泰姆	450C3r嘉泰姆	0.923C3r嘉泰姆	340C3r嘉泰姆	>95C3r嘉泰姆	SOP-8C3r嘉泰姆
CXSD62281C3r嘉泰姆	2A, 30V, 340KHz Synchronous Step-Down ConverterC3r嘉泰姆	2000C3r嘉泰姆	4.5~30C3r嘉泰姆	0.923~20C3r嘉泰姆	450C3r嘉泰姆	0.923C3r嘉泰姆	340C3r嘉泰姆	>95C3r嘉泰姆	SOP-8C3r嘉泰姆
CXSD62282C3r嘉泰姆	3A,30V,500KHz Step-Down ConverterC3r嘉泰姆	3000C3r嘉泰姆	4. 5 ~ 30C3r嘉泰姆	0.8~12C3r嘉泰姆	450C3r嘉泰姆	0.8C3r嘉泰姆	500C3r嘉泰姆	> 95C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62283C3r嘉泰姆	3A, 28V, 500kHz Synchronous Step-Down ConverterC3r嘉泰姆	3000C3r嘉泰姆	4.5 ~ 28C3r嘉泰姆	0.8~24C3r嘉泰姆	1100C3r嘉泰姆	0.8C3r嘉泰姆	500C3r嘉泰姆	>95C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62284C3r嘉泰姆	3A, 28V, 500kHz Synchronous Step-Down ConverterC3r嘉泰姆	3000C3r嘉泰姆	4.5 ~ 28C3r嘉泰姆	0.8~24C3r嘉泰姆	1100C3r嘉泰姆	0.8C3r嘉泰姆	500C3r嘉泰姆	>95C3r嘉泰姆	SOP-8（EP）</span>C3r嘉泰姆
CXSD62285C3r嘉泰姆	3A, 28V, 1MHz Synchronous Step-Down ConverterC3r嘉泰姆	3000C3r嘉泰姆	4.5 ~ 28C3r嘉泰姆	0.8~24C3r嘉泰姆	1100C3r嘉泰姆	0.8C3r嘉泰姆	1000C3r嘉泰姆	>95C3r嘉泰姆	SOP-8(EP),TDFN-8(EP)C3r嘉泰姆
CXSD62286C3r嘉泰姆	3A,40V,200KHz Step-Down ConverterrC3r嘉泰姆	3000C3r嘉泰姆	4.75 ~ 40C3r嘉泰姆	0.92~15C3r嘉泰姆	550C3r嘉泰姆	0.92C3r嘉泰姆	200C3r嘉泰姆	>95C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62287C3r嘉泰姆	3A, 28V, 1MHz Synchronous Step-Down ConverterC3r嘉泰姆	3000C3r嘉泰姆	4.5 ~ 28C3r嘉泰姆	0.8~24C3r嘉泰姆	1100C3r嘉泰姆	0.8C3r嘉泰姆	1000C3r嘉泰姆	>95C3r嘉泰姆	SOP-8（EP）</span>C3r嘉泰姆
CXSD62288C3r嘉泰姆	3A, 30V, 340KHz Synchronous Step-Down ConverterC3r嘉泰姆	3000C3r嘉泰姆	4.5 ~ 30C3r嘉泰姆	0.925~12C3r嘉泰姆	450C3r嘉泰姆	0.925C3r嘉泰姆	340C3r嘉泰姆	>95C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62289C3r嘉泰姆	3A, 30V, 340KHz Synchronous Step-Down ConverterC3r嘉泰姆	3000C3r嘉泰姆	4.5~30C3r嘉泰姆	0.923~20C3r嘉泰姆	450C3r嘉泰姆	0.925C3r嘉泰姆	340C3r嘉泰姆	>95C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62290C3r嘉泰姆	3.2A, Synchronous Step-Down ConverterC3r嘉泰姆	3200C3r嘉泰姆	2.7 ~ 5.5C3r嘉泰姆	0.8~5C3r嘉泰姆	500C3r嘉泰姆	0.8C3r嘉泰姆	1000C3r嘉泰姆	> 96C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62291C3r嘉泰姆	4A, 21V, 500KHz Synchronous Step-Down ConverterC3r嘉泰姆	4000C3r嘉泰姆	4.5 ~ 21C3r嘉泰姆	0.8~15C3r嘉泰姆	900C3r嘉泰姆	0.808C3r嘉泰姆	500C3r嘉泰姆	>95C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62292C3r嘉泰姆	5A,30V,500KHz Step-Down ConverterC3r嘉泰姆	5000C3r嘉泰姆	5.5 ~ 30C3r嘉泰姆	1.222~26C3r嘉泰姆	550C3r嘉泰姆	1.222C3r嘉泰姆	500C3r嘉泰姆	> 95C3r嘉泰姆	SOP-8(EP)C3r嘉泰姆
CXSD62293C3r嘉泰姆	6A Synchronous Step-Down ConverterC3r嘉泰姆	6000C3r嘉泰姆	3.3~5.5C3r嘉泰姆	0.6~2C3r嘉泰姆	1000C3r嘉泰姆	0.6~2C3r嘉泰姆	1200C3r嘉泰姆	>93C3r嘉泰姆	TQFN-20C3r嘉泰姆
CXSD62294C3r嘉泰姆	4A, Synchronous Step-Down ConverterC3r嘉泰姆	4000C3r嘉泰姆	2.7~5.5C3r嘉泰姆	0.6-~5C3r嘉泰姆	500C3r嘉泰姆	0.6C3r嘉泰姆	1000C3r嘉泰姆	96C3r嘉泰姆	TDFN-10C3r嘉泰姆
CXSD62295C3r嘉泰姆	2A, 24V, 340KHz Synchronous Step-Down ConverterC3r嘉泰姆	2000C3r嘉泰姆	4.5~24C3r嘉泰姆	0.92~20C3r嘉泰姆	1000C3r嘉泰姆	0.92C3r嘉泰姆	340C3r嘉泰姆	94C3r嘉泰姆	SOP-8,TSOT23-8C3r嘉泰姆
CXSD62296C3r嘉泰姆	3A, 24V, 340KHz Synchronous Step-Down ConverterC3r嘉泰姆	3000C3r嘉泰姆	4.5~24C3r嘉泰姆	0.92~20C3r嘉泰姆	1000C3r嘉泰姆	0.92C3r嘉泰姆	340C3r嘉泰姆	94C3r嘉泰姆	SOP-8C3r嘉泰姆

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上一篇：带软启动的1.5MHz, 800mA同步整流降压型 DC-DC变换器1.5MHz, 800mA Synchronous Step-Down Converter with Soft Start CXSD62266是一款恒定频率，采用电流模脉宽调制（PWM）架构的降压型DC-DC变换器，集成了主开关和同步整流开关，可以获得更高的效率。2.5V～5.5V的输入电压范围使得CXSD62266成为单节锂

下一篇： 1A, 2.25MHz 同步降压DC/DC转换器1A, 2.25MHz Synchronous Step-Down DC/DC Regulator CXSD62268是一款应用于电池供电的便携式设备的同步降压DC/DC。2.5V到5.5V的输入电压范围使CXSD62268适合工作在一节锂电池或三节的镍氢电池/镍铬电池的便携式设备。该芯片也可工作于标准的3.3V或5V电压

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