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

Time of publication：2020-04-10Number of views：28

目录YOu嘉泰姆

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

YOu嘉泰姆

一,产品概述(General Description) YOu嘉泰姆

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

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

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

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

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

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

current is less than 1μA.YOu嘉泰姆

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

High Efficiency up to 94%YOu嘉泰姆
Low RDS(ON) Integrated Power MOSFETYOu嘉泰姆
Internal Compensation FunctionYOu嘉泰姆
Wide Input Voltage Range: 4.5V to 21VYOu嘉泰姆
Adjustable Output Voltage from 0.8V to 17.85VYOu嘉泰姆
2A Output CurrentYOu嘉泰姆
Fixed 600KHz Switching FrequencyYOu嘉泰姆
Current Mode OperationYOu嘉泰姆
Cycle-by-Cycle Current LimitYOu嘉泰姆
Over-Temperature Protection with Auto RecoveryYOu嘉泰姆
Output Overvoltage ProtectionYOu嘉泰姆
Under Voltage LockoutYOu嘉泰姆
<1μA Shutdown CurrentYOu嘉泰姆
SOT-23-6 PackageYOu嘉泰姆
三,应用范围 (Applications)YOu嘉泰姆

STB (Set-Top-Box)YOu嘉泰姆
LCD Display, TVYOu嘉泰姆
Distributed Power SystemYOu嘉泰姆
Networking, XDSL ModemYOu嘉泰姆
四.技术规格书下载（产品PDF）YOu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！YOu嘉泰姆

QQ截图20160419174301.jpg YOu嘉泰姆

五,产品封装图 (Package)YOu嘉泰姆

YOu嘉泰姆

I/OYOu嘉泰姆	Pin NameYOu嘉泰姆	Pin No.YOu嘉泰姆	Pin FunctionYOu嘉泰姆
IYOu嘉泰姆	FBYOu嘉泰姆	3YOu嘉泰姆	Voltage Feedback Input Pin. Connect FB and VOUT with a resistive voltage divider. This ICYOu嘉泰姆 senses feedback voltage via FB and regulates it at 0.8V.YOu嘉泰姆
IYOu嘉泰姆	VINYOu嘉泰姆	5YOu嘉泰姆	Power Supply Input Pin. Drive VIN pin by 4.5V to 21V voltage to power on the chip.YOu嘉泰姆
IYOu嘉泰姆		4YOu嘉泰姆	Enable Input Pin. This pin is a digital control input which turns the converter on or off. Connect toYOu嘉泰姆 VIN with a 100kΩ resistor for self-startup.YOu嘉泰姆
IYOu嘉泰姆	GNDYOu嘉泰姆	2YOu嘉泰姆	Ground Pin.YOu嘉泰姆
OYOu嘉泰姆	LXYOu嘉泰姆	6YOu嘉泰姆	Power Switching Output. LX is the output of the internal high side NMOS switch.YOu嘉泰姆
OYOu嘉泰姆	BSTYOu嘉泰姆	1YOu嘉泰姆	High Side Gate Drive Boost Pin. A capacitor rating between 10nF~100nF must be connected fromYOu嘉泰姆 this pin to LX. It can boost the gate drive to fully turn on the internal high side NMOS.YOu嘉泰姆

六.电路原理图YOu嘉泰姆

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VOUTYOu嘉泰姆	C1YOu嘉泰姆	R1YOu嘉泰姆	R2YOu嘉泰姆	C9YOu嘉泰姆	C4YOu嘉泰姆	L1YOu嘉泰姆	C2YOu嘉泰姆
1.2VYOu嘉泰姆	10μF MLCC x2YOu嘉泰姆	4.99kΩYOu嘉泰姆	10kΩYOu嘉泰姆	--YOu嘉泰姆	200pF~1nFYOu嘉泰姆	2.2μHYOu嘉泰姆	22μF MLCC x2YOu嘉泰姆
1.8VYOu嘉泰姆	10μF MLCC x2YOu嘉泰姆	4.99kΩYOu嘉泰姆	3.92kΩYOu嘉泰姆	--YOu嘉泰姆	200pF~1nFYOu嘉泰姆	2.2μHYOu嘉泰姆	22μF MLCC x2YOu嘉泰姆
2.5VYOu嘉泰姆	10μF MLCC x2YOu嘉泰姆	4.99kΩYOu嘉泰姆	2.32kΩYOu嘉泰姆	--YOu嘉泰姆	200pF~1nFYOu嘉泰姆	4.7μHYOu嘉泰姆	22μF MLCC x2YOu嘉泰姆
3.3VYOu嘉泰姆	10μF MLCC x2YOu嘉泰姆	30.9kΩYOu嘉泰姆	9.76kΩYOu嘉泰姆	--YOu嘉泰姆	200pF~1nFYOu嘉泰姆	4.7μHYOu嘉泰姆	22μF MLCC x2YOu嘉泰姆
5VYOu嘉泰姆	10μF MLCC x2YOu嘉泰姆	30.9kΩYOu嘉泰姆	5.76kΩYOu嘉泰姆	--YOu嘉泰姆	200pF~1nFYOu嘉泰姆	4.7μHYOu嘉泰姆	22μF MLCC x2YOu嘉泰姆
1.2VYOu嘉泰姆	100μF EC x1YOu嘉泰姆	4.99kΩYOu嘉泰姆	10kΩYOu嘉泰姆	0.1μFYOu嘉泰姆	--YOu嘉泰姆	2.2μHYOu嘉泰姆	100μF EC x1YOu嘉泰姆
1.8VYOu嘉泰姆	100μF EC x1YOu嘉泰姆	4.99kΩYOu嘉泰姆	3.92kΩYOu嘉泰姆	0.1μFYOu嘉泰姆	--YOu嘉泰姆	2.2μHYOu嘉泰姆	100μF EC x1YOu嘉泰姆
2.5VYOu嘉泰姆	100μF EC x1YOu嘉泰姆	4.99kΩYOu嘉泰姆	2.32kΩYOu嘉泰姆	0.1μFYOu嘉泰姆	--YOu嘉泰姆	4.7μHYOu嘉泰姆	100μF EC x1YOu嘉泰姆
3.3VYOu嘉泰姆	100μF EC x1YOu嘉泰姆	30.9kΩYOu嘉泰姆	9.76kΩYOu嘉泰姆	0.1μFYOu嘉泰姆	--YOu嘉泰姆	4.7μHYOu嘉泰姆	100μF EC x1YOu嘉泰姆
5VYOu嘉泰姆	100μF EC x1YOu嘉泰姆	30.9kΩYOu嘉泰姆	5.76kΩYOu嘉泰姆	0.1μFYOu嘉泰姆	--YOu嘉泰姆	4.7μHYOu嘉泰姆	100μF EC x1YOu嘉泰姆

七,功能概述YOu嘉泰姆

Absolute Maximum Ratings (Note 1)YOu嘉泰姆

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

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

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

高压同步DC-DC降压ICYOu嘉泰姆
型号YOu嘉泰姆	输入耐压YOu嘉泰姆	输出电压YOu嘉泰姆	输出电流YOu嘉泰姆	反馈电压YOu嘉泰姆	工作频率YOu嘉泰姆	效率YOu嘉泰姆	静态工YOu嘉泰姆作电流YOu嘉泰姆	待机电流YOu嘉泰姆	封装YOu嘉泰姆
CXSD61049YOu嘉泰姆	8V-35VYOu嘉泰姆	可调输出YOu嘉泰姆带线损补偿YOu嘉泰姆	2A/带可调恒流设置YOu嘉泰姆	1.21VYOu嘉泰姆	130KYOu嘉泰姆	95%YOu嘉泰姆	1.3mAYOu嘉泰姆	112uAYOu嘉泰姆	SOP-8YOu嘉泰姆
CXSD61050YOu嘉泰姆	8V-35VYOu嘉泰姆	可调输出/带线损YOu嘉泰姆补偿带使能端YOu嘉泰姆	2A/带可调恒流设置YOu嘉泰姆	1.21VYOu嘉泰姆	130KYOu嘉泰姆	93%YOu嘉泰姆	1.3mAYOu嘉泰姆		SOP-8YOu嘉泰姆
CXSD61046YOu嘉泰姆	4.5-20VYOu嘉泰姆	可调输出YOu嘉泰姆	2.0AYOu嘉泰姆	0.923VYOu嘉泰姆	340KYOu嘉泰姆	95%YOu嘉泰姆	1mAYOu嘉泰姆	6uAYOu嘉泰姆	SOP-8YOu嘉泰姆
CXSD61046A/BYOu嘉泰姆	4.5-27VYOu嘉泰姆	可调输出YOu嘉泰姆	2.0A/2.5AYOu嘉泰姆	0.925VYOu嘉泰姆	340KYOu嘉泰姆	96%YOu嘉泰姆	1.3mAYOu嘉泰姆	0.3uAYOu嘉泰姆	SOP-8YOu嘉泰姆
CXSD61048YOu嘉泰姆	8V--35VYOu嘉泰姆	可调输出YOu嘉泰姆带线损补偿YOu嘉泰姆	2.0A/带可调限流保护YOu嘉泰姆	1.2VYOu嘉泰姆	100-500KYOu嘉泰姆	93%YOu嘉泰姆	750uAYOu嘉泰姆	110uAYOu嘉泰姆	ESOP-8YOu嘉泰姆
CXSD61048AYOu嘉泰姆	10V--35VYOu嘉泰姆	可调输出YOu嘉泰姆带线损补偿YOu嘉泰姆	2.5A/带可调限流保护YOu嘉泰姆	1.2VYOu嘉泰姆	100-500K可调YOu嘉泰姆	93%YOu嘉泰姆	15mAYOu嘉泰姆	110uAYOu嘉泰姆	SOP-8YOu嘉泰姆
CXSD61048BYOu嘉泰姆	8V-35VYOu嘉泰姆	可调输出YOu嘉泰姆带线损补偿YOu嘉泰姆	2.8A/带可调限流保护YOu嘉泰姆	1.21VYOu嘉泰姆	100-500K可调YOu嘉泰姆	93%YOu嘉泰姆	15mAYOu嘉泰姆	110uAYOu嘉泰姆	SOP-8YOu嘉泰姆
CXSD61048CYOu嘉泰姆	8V-35VYOu嘉泰姆	可调输出YOu嘉泰姆带线损补偿YOu嘉泰姆	3.2A/带可调限流保护YOu嘉泰姆	1.21VYOu嘉泰姆	100-500K可调YOu嘉泰姆	93%YOu嘉泰姆	15mAYOu嘉泰姆	110uAYOu嘉泰姆	SOP-8YOu嘉泰姆
CXSD61047YOu嘉泰姆	4.6-22VYOu嘉泰姆	可调输出YOu嘉泰姆	3.0AYOu嘉泰姆	0.923VYOu嘉泰姆	340KYOu嘉泰姆	95%YOu嘉泰姆	55uAYOu嘉泰姆	1uAYOu嘉泰姆	ESOP8YOu嘉泰姆
CXSD61047AYOu嘉泰姆	4.5-27VYOu嘉泰姆	可调输出YOu嘉泰姆	3.0AYOu嘉泰姆	0.925VYOu嘉泰姆	340KYOu嘉泰姆	93%YOu嘉泰姆	1.3mAYOu嘉泰姆	0.3uAYOu嘉泰姆	ESOP8YOu嘉泰姆
CXSD61047BYOu嘉泰姆	4.5V-23VYOu嘉泰姆	可调输出YOu嘉泰姆	3.5AYOu嘉泰姆	0.925VYOu嘉泰姆	340KYOu嘉泰姆	96%YOu嘉泰姆	2.5mAYOu嘉泰姆		ESOP-8YOu嘉泰姆
CXSD61051YOu嘉泰姆	8V-35VYOu嘉泰姆	可调输出YOu嘉泰姆带线损补偿YOu嘉泰姆	扩流4.5A带YOu嘉泰姆可调限流保护YOu嘉泰姆	1.21VYOu嘉泰姆	100-500K可调YOu嘉泰姆	95%YOu嘉泰姆	14mAYOu嘉泰姆	100uAYOu嘉泰姆	ESOP8YOu嘉泰姆
CXSD61052YOu嘉泰姆	3.6-40VYOu嘉泰姆	可调输出YOu嘉泰姆	2.0AYOu嘉泰姆	0.8VYOu嘉泰姆	440KYOu嘉泰姆	94%YOu嘉泰姆	74uAYOu嘉泰姆	0.07uAYOu嘉泰姆	ESOP-8YOu嘉泰姆
CXSD61053YOu嘉泰姆	4.5-20VYOu嘉泰姆	可调输出YOu嘉泰姆	4.0AYOu嘉泰姆	0.923VYOu嘉泰姆	340KYOu嘉泰姆	95%YOu嘉泰姆	1.6mAYOu嘉泰姆	6uAYOu嘉泰姆	ESOP8YOu嘉泰姆
CXSD61054YOu嘉泰姆	3.5-23VYOu嘉泰姆	可调输出YOu嘉泰姆	2.0AYOu嘉泰姆	0.6VYOu嘉泰姆	600KYOu嘉泰姆	96%YOu嘉泰姆	400uAYOu嘉泰姆	1uAYOu嘉泰姆	SOT-26YOu嘉泰姆
CXSD61055YOu嘉泰姆	4.5-17VYOu嘉泰姆	可调输出YOu嘉泰姆	2.0AYOu嘉泰姆	0.6VYOu嘉泰姆	600KYOu嘉泰姆	96%YOu嘉泰姆	400uAYOu嘉泰姆	1uAYOu嘉泰姆	SOT-26YOu嘉泰姆
CXSD61055AYOu嘉泰姆	4.5V-23VYOu嘉泰姆	可调输出YOu嘉泰姆	2.0AYOu嘉泰姆	0.8VYOu嘉泰姆	600KYOu嘉泰姆	92%YOu嘉泰姆	800uAYOu嘉泰姆		SOT-26YOu嘉泰姆
CXSD61055BYOu嘉泰姆	3.3-17VYOu嘉泰姆	可调输出YOu嘉泰姆	2.0AYOu嘉泰姆	0.6VYOu嘉泰姆	600KYOu嘉泰姆	96%YOu嘉泰姆	400uAYOu嘉泰姆	4uAYOu嘉泰姆	SOT-26YOu嘉泰姆
CXSD61056YOu嘉泰姆	4.5-26VYOu嘉泰姆	可调输出YOu嘉泰姆	1.2AYOu嘉泰姆	0.8VYOu嘉泰姆	1.4MYOu嘉泰姆	94%YOu嘉泰姆	600uAYOu嘉泰姆	1uAYOu嘉泰姆	SOT-26YOu嘉泰姆
CXSD61057YOu嘉泰姆	4.0-42VYOu嘉泰姆	可调输出YOu嘉泰姆	1.5AYOu嘉泰姆	0.8VYOu嘉泰姆	650KYOu嘉泰姆	91%YOu嘉泰姆	600uAYOu嘉泰姆	6uAYOu嘉泰姆	SOT-26YOu嘉泰姆

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