CXSD61055A step-down DC/DC converter wide 4.5V to 21V input voltage range 2A continuous load current

发表时间：2020-04-09浏览次数：12

目录NnH嘉泰姆

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

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一,产品概述(General Description) NnH嘉泰姆

The CXSD61055A is a synchronous step-down DC/DC converter that NnH嘉泰姆

provides wide 4.5V to 21V input voltage range and 2A continuous load current capability.NnH嘉泰姆
The CXSD61055A fault protection includes cycle-by-cycle current limit, NnH嘉泰姆

UVLO, output overvoltage protection and thermal shutdown. The adjustable NnH嘉泰姆

soft-start function prevents inrush current at turn-on. This device uses currentNnH嘉泰姆

mode control scheme which provides fast transient response. Internal compensation function reduces external compensation NnH嘉泰姆

components and simplifies the design process. In shutdown mode, the supplyNnH嘉泰姆

current is less than 1μA.NnH嘉泰姆

The CXSD61055A is available in SOT-23-6 package and provides good thermal conductance.NnH嘉泰姆
二.产品特点(Features)NnH嘉泰姆

High Efficiency up to 94%NnH嘉泰姆
Low RDS(ON) Integrated Power MOSFETNnH嘉泰姆
Internal Compensation FunctionNnH嘉泰姆
Wide Input Voltage Range: 4.5V to 21VNnH嘉泰姆
Adjustable Output Voltage from 0.8V to 17.85VNnH嘉泰姆
2A Output CurrentNnH嘉泰姆
Fixed 600KHz Switching FrequencyNnH嘉泰姆
Current Mode OperationNnH嘉泰姆
Cycle-by-Cycle Current LimitNnH嘉泰姆
Over-Temperature Protection with Auto RecoveryNnH嘉泰姆
Output Overvoltage ProtectionNnH嘉泰姆
Under Voltage LockoutNnH嘉泰姆
<1μA Shutdown CurrentNnH嘉泰姆
SOT-23-6 PackageNnH嘉泰姆
三,应用范围 (Applications)NnH嘉泰姆

STB (Set-Top-Box)NnH嘉泰姆
LCD Display, TVNnH嘉泰姆
Distributed Power SystemNnH嘉泰姆
Networking, XDSL ModemNnH嘉泰姆
四.技术规格书下载（产品PDF）NnH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！NnH嘉泰姆

QQ截图20160419174301.jpg NnH嘉泰姆

五,产品封装图 (Package)NnH嘉泰姆

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I/ONnH嘉泰姆	Pin NameNnH嘉泰姆	Pin No.NnH嘉泰姆	Pin FunctionNnH嘉泰姆
INnH嘉泰姆	FBNnH嘉泰姆	3NnH嘉泰姆	Voltage Feedback Input Pin. Connect FB and VOUT with a resistive voltage divider. This ICNnH嘉泰姆 senses feedback voltage via FB and regulates it at 0.8V.NnH嘉泰姆
INnH嘉泰姆	VINNnH嘉泰姆	5NnH嘉泰姆	Power Supply Input Pin. Drive VIN pin by 4.5V to 21V voltage to power on the chip.NnH嘉泰姆
INnH嘉泰姆		4NnH嘉泰姆	Enable Input Pin. This pin is a digital control input which turns the converter on or off. Connect toNnH嘉泰姆 VIN with a 100kΩ resistor for self-startup.NnH嘉泰姆
INnH嘉泰姆	GNDNnH嘉泰姆	2NnH嘉泰姆	Ground Pin.NnH嘉泰姆
ONnH嘉泰姆	LXNnH嘉泰姆	6NnH嘉泰姆	Power Switching Output. LX is the output of the internal high side NMOS switch.NnH嘉泰姆
ONnH嘉泰姆	BSTNnH嘉泰姆	1NnH嘉泰姆	High Side Gate Drive Boost Pin. A capacitor rating between 10nF~100nF must be connected fromNnH嘉泰姆 this pin to LX. It can boost the gate drive to fully turn on the internal high side NMOS.NnH嘉泰姆

六.电路原理图NnH嘉泰姆

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VOUTNnH嘉泰姆	C1NnH嘉泰姆	R1NnH嘉泰姆	R2NnH嘉泰姆	C9NnH嘉泰姆	C4NnH嘉泰姆	L1NnH嘉泰姆	C2NnH嘉泰姆
1.2VNnH嘉泰姆	10μF MLCC x2NnH嘉泰姆	4.99kΩNnH嘉泰姆	10kΩNnH嘉泰姆	--NnH嘉泰姆	200pF~1nFNnH嘉泰姆	2.2μHNnH嘉泰姆	22μF MLCC x2NnH嘉泰姆
1.8VNnH嘉泰姆	10μF MLCC x2NnH嘉泰姆	4.99kΩNnH嘉泰姆	3.92kΩNnH嘉泰姆	--NnH嘉泰姆	200pF~1nFNnH嘉泰姆	2.2μHNnH嘉泰姆	22μF MLCC x2NnH嘉泰姆
2.5VNnH嘉泰姆	10μF MLCC x2NnH嘉泰姆	4.99kΩNnH嘉泰姆	2.32kΩNnH嘉泰姆	--NnH嘉泰姆	200pF~1nFNnH嘉泰姆	4.7μHNnH嘉泰姆	22μF MLCC x2NnH嘉泰姆
3.3VNnH嘉泰姆	10μF MLCC x2NnH嘉泰姆	30.9kΩNnH嘉泰姆	9.76kΩNnH嘉泰姆	--NnH嘉泰姆	200pF~1nFNnH嘉泰姆	4.7μHNnH嘉泰姆	22μF MLCC x2NnH嘉泰姆
5VNnH嘉泰姆	10μF MLCC x2NnH嘉泰姆	30.9kΩNnH嘉泰姆	5.76kΩNnH嘉泰姆	--NnH嘉泰姆	200pF~1nFNnH嘉泰姆	4.7μHNnH嘉泰姆	22μF MLCC x2NnH嘉泰姆
1.2VNnH嘉泰姆	100μF EC x1NnH嘉泰姆	4.99kΩNnH嘉泰姆	10kΩNnH嘉泰姆	0.1μFNnH嘉泰姆	--NnH嘉泰姆	2.2μHNnH嘉泰姆	100μF EC x1NnH嘉泰姆
1.8VNnH嘉泰姆	100μF EC x1NnH嘉泰姆	4.99kΩNnH嘉泰姆	3.92kΩNnH嘉泰姆	0.1μFNnH嘉泰姆	--NnH嘉泰姆	2.2μHNnH嘉泰姆	100μF EC x1NnH嘉泰姆
2.5VNnH嘉泰姆	100μF EC x1NnH嘉泰姆	4.99kΩNnH嘉泰姆	2.32kΩNnH嘉泰姆	0.1μFNnH嘉泰姆	--NnH嘉泰姆	4.7μHNnH嘉泰姆	100μF EC x1NnH嘉泰姆
3.3VNnH嘉泰姆	100μF EC x1NnH嘉泰姆	30.9kΩNnH嘉泰姆	9.76kΩNnH嘉泰姆	0.1μFNnH嘉泰姆	--NnH嘉泰姆	4.7μHNnH嘉泰姆	100μF EC x1NnH嘉泰姆
5VNnH嘉泰姆	100μF EC x1NnH嘉泰姆	30.9kΩNnH嘉泰姆	5.76kΩNnH嘉泰姆	0.1μFNnH嘉泰姆	--NnH嘉泰姆	4.7μHNnH嘉泰姆	100μF EC x1NnH嘉泰姆

七,功能概述NnH嘉泰姆

Absolute Maximum Ratings (Note 1)NnH嘉泰姆

● Supply Voltage VIN ----------------------------------------------------------------------------- -0.3V to +23VNnH嘉泰姆

● Enable Voltage SH------------------------------------------------------------------------ -0.3V to +23VNnH嘉泰姆

● LX Voltage VLX (50ns) ---------------------------------------------------------------------- -1V to VIN+0.3VNnH嘉泰姆
● BST Pin Voltage VBST ----------------------------------------------------------------------- VLX-0.3V to VLX+6VNnH嘉泰姆
● All Other Pins Voltage -------------------------------------------------------------------------- -0.3V to +6VNnH嘉泰姆
● Maximum Junction Temperature (TJ) ---------------------------------------------------- +150°CNnH嘉泰姆
● Storage Temperature (TS) -------------------------------------------------------------------- -65°C to +150°CNnH嘉泰姆
● Lead Temperature (Soldering, 10sec.) --------------------------------------------------- +260°CNnH嘉泰姆
● Package Thermal Resistance, (θJA) SOT-23-6 ------------------------------------------------ +250°C/WNnH嘉泰姆
● Package Thermal Resistance, (θJC) SOT-23-6 ---------------------------------------------------- +110°C/WNnH嘉泰姆
八,相关芯片选择指南 更多同类产品......NnH嘉泰姆

高压同步DC-DC降压ICNnH嘉泰姆
型号NnH嘉泰姆	输入耐压NnH嘉泰姆	输出电压NnH嘉泰姆	输出电流NnH嘉泰姆	反馈电压NnH嘉泰姆	工作频率NnH嘉泰姆	效率NnH嘉泰姆	静态工NnH嘉泰姆作电流NnH嘉泰姆	待机电流NnH嘉泰姆	封装NnH嘉泰姆
CXSD61049NnH嘉泰姆	8V-35VNnH嘉泰姆	可调输出NnH嘉泰姆带线损补偿NnH嘉泰姆	2A/带可调恒流设置NnH嘉泰姆	1.21VNnH嘉泰姆	130KNnH嘉泰姆	95%NnH嘉泰姆	1.3mANnH嘉泰姆	112uANnH嘉泰姆	SOP-8NnH嘉泰姆
CXSD61050NnH嘉泰姆	8V-35VNnH嘉泰姆	可调输出/带线损NnH嘉泰姆补偿带使能端NnH嘉泰姆	2A/带可调恒流设置NnH嘉泰姆	1.21VNnH嘉泰姆	130KNnH嘉泰姆	93%NnH嘉泰姆	1.3mANnH嘉泰姆		SOP-8NnH嘉泰姆
CXSD61046NnH嘉泰姆	4.5-20VNnH嘉泰姆	可调输出NnH嘉泰姆	2.0ANnH嘉泰姆	0.923VNnH嘉泰姆	340KNnH嘉泰姆	95%NnH嘉泰姆	1mANnH嘉泰姆	6uANnH嘉泰姆	SOP-8NnH嘉泰姆
CXSD61046A/BNnH嘉泰姆	4.5-27VNnH嘉泰姆	可调输出NnH嘉泰姆	2.0A/2.5ANnH嘉泰姆	0.925VNnH嘉泰姆	340KNnH嘉泰姆	96%NnH嘉泰姆	1.3mANnH嘉泰姆	0.3uANnH嘉泰姆	SOP-8NnH嘉泰姆
CXSD61048NnH嘉泰姆	8V--35VNnH嘉泰姆	可调输出NnH嘉泰姆带线损补偿NnH嘉泰姆	2.0A/带可调限流保护NnH嘉泰姆	1.2VNnH嘉泰姆	100-500KNnH嘉泰姆	93%NnH嘉泰姆	750uANnH嘉泰姆	110uANnH嘉泰姆	ESOP-8NnH嘉泰姆
CXSD61048ANnH嘉泰姆	10V--35VNnH嘉泰姆	可调输出NnH嘉泰姆带线损补偿NnH嘉泰姆	2.5A/带可调限流保护NnH嘉泰姆	1.2VNnH嘉泰姆	100-500K可调NnH嘉泰姆	93%NnH嘉泰姆	15mANnH嘉泰姆	110uANnH嘉泰姆	SOP-8NnH嘉泰姆
CXSD61048BNnH嘉泰姆	8V-35VNnH嘉泰姆	可调输出NnH嘉泰姆带线损补偿NnH嘉泰姆	2.8A/带可调限流保护NnH嘉泰姆	1.21VNnH嘉泰姆	100-500K可调NnH嘉泰姆	93%NnH嘉泰姆	15mANnH嘉泰姆	110uANnH嘉泰姆	SOP-8NnH嘉泰姆
CXSD61048CNnH嘉泰姆	8V-35VNnH嘉泰姆	可调输出NnH嘉泰姆带线损补偿NnH嘉泰姆	3.2A/带可调限流保护NnH嘉泰姆	1.21VNnH嘉泰姆	100-500K可调NnH嘉泰姆	93%NnH嘉泰姆	15mANnH嘉泰姆	110uANnH嘉泰姆	SOP-8NnH嘉泰姆
CXSD61047NnH嘉泰姆	4.6-22VNnH嘉泰姆	可调输出NnH嘉泰姆	3.0ANnH嘉泰姆	0.923VNnH嘉泰姆	340KNnH嘉泰姆	95%NnH嘉泰姆	55uANnH嘉泰姆	1uANnH嘉泰姆	ESOP8NnH嘉泰姆
CXSD61047ANnH嘉泰姆	4.5-27VNnH嘉泰姆	可调输出NnH嘉泰姆	3.0ANnH嘉泰姆	0.925VNnH嘉泰姆	340KNnH嘉泰姆	93%NnH嘉泰姆	1.3mANnH嘉泰姆	0.3uANnH嘉泰姆	ESOP8NnH嘉泰姆
CXSD61047BNnH嘉泰姆	4.5V-23VNnH嘉泰姆	可调输出NnH嘉泰姆	3.5ANnH嘉泰姆	0.925VNnH嘉泰姆	340KNnH嘉泰姆	96%NnH嘉泰姆	2.5mANnH嘉泰姆		ESOP-8NnH嘉泰姆
CXSD61051NnH嘉泰姆	8V-35VNnH嘉泰姆	可调输出NnH嘉泰姆带线损补偿NnH嘉泰姆	扩流4.5A带NnH嘉泰姆可调限流保护NnH嘉泰姆	1.21VNnH嘉泰姆	100-500K可调NnH嘉泰姆	95%NnH嘉泰姆	14mANnH嘉泰姆	100uANnH嘉泰姆	ESOP8NnH嘉泰姆
CXSD61052NnH嘉泰姆	3.6-40VNnH嘉泰姆	可调输出NnH嘉泰姆	2.0ANnH嘉泰姆	0.8VNnH嘉泰姆	440KNnH嘉泰姆	94%NnH嘉泰姆	74uANnH嘉泰姆	0.07uANnH嘉泰姆	ESOP-8NnH嘉泰姆
CXSD61053NnH嘉泰姆	4.5-20VNnH嘉泰姆	可调输出NnH嘉泰姆	4.0ANnH嘉泰姆	0.923VNnH嘉泰姆	340KNnH嘉泰姆	95%NnH嘉泰姆	1.6mANnH嘉泰姆	6uANnH嘉泰姆	ESOP8NnH嘉泰姆
CXSD61054NnH嘉泰姆	3.5-23VNnH嘉泰姆	可调输出NnH嘉泰姆	2.0ANnH嘉泰姆	0.6VNnH嘉泰姆	600KNnH嘉泰姆	96%NnH嘉泰姆	400uANnH嘉泰姆	1uANnH嘉泰姆	SOT-26NnH嘉泰姆
CXSD61055NnH嘉泰姆	4.5-17VNnH嘉泰姆	可调输出NnH嘉泰姆	2.0ANnH嘉泰姆	0.6VNnH嘉泰姆	600KNnH嘉泰姆	96%NnH嘉泰姆	400uANnH嘉泰姆	1uANnH嘉泰姆	SOT-26NnH嘉泰姆
CXSD61055ANnH嘉泰姆	4.5V-23VNnH嘉泰姆	可调输出NnH嘉泰姆	2.0ANnH嘉泰姆	0.8VNnH嘉泰姆	600KNnH嘉泰姆	92%NnH嘉泰姆	800uANnH嘉泰姆		SOT-26NnH嘉泰姆
CXSD61055BNnH嘉泰姆	3.3-17VNnH嘉泰姆	可调输出NnH嘉泰姆	2.0ANnH嘉泰姆	0.6VNnH嘉泰姆	600KNnH嘉泰姆	96%NnH嘉泰姆	400uANnH嘉泰姆	4uANnH嘉泰姆	SOT-26NnH嘉泰姆
CXSD61056NnH嘉泰姆	4.5-26VNnH嘉泰姆	可调输出NnH嘉泰姆	1.2ANnH嘉泰姆	0.8VNnH嘉泰姆	1.4MNnH嘉泰姆	94%NnH嘉泰姆	600uANnH嘉泰姆	1uANnH嘉泰姆	SOT-26NnH嘉泰姆
CXSD61057NnH嘉泰姆	4.0-42VNnH嘉泰姆	可调输出NnH嘉泰姆	1.5ANnH嘉泰姆	0.8VNnH嘉泰姆	650KNnH嘉泰姆	91%NnH嘉泰姆	600uANnH嘉泰姆	6uANnH嘉泰姆	SOT-26NnH嘉泰姆

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