CXSD6249 Adjustable Output Voltage From 0.8V to VCC 2.5 to 5.5V Input Voltage Range 2A Output Current

CXSD6249 is a high efficiency current mode synchronous buck PWM DC-DC regulator. The internal generated 0.8V precision feedback reference voltage is designed for low output voltage. Low RDS (ON) synchronous switch dramatically reduces conduction loss. To extend battery life for portable application, 100% duty cycle is supported for low-dropout operation. Shutdown mode also helps saving the current consumption

                          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

一.产品概述

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  The CXSD6249 is a high efficiency current mode synchronous buck PWM DC-DC regulator. The internal generated 0.8V precision feedback reference voltage is designed for low output voltage. Low RDS (ON) synchronous switch dramatically reduces conduction loss. To extend battery life for portable application, 100% duty cycle is supported for low-dropout operation. Shutdown mode also helps saving the current consumption. The CXSD6249 is packaged in SOP-8L to reduce PCB space.

二.产品特点

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˙Input Voltage Range: 2.5 to 5.5V
˙Adjustable Output Voltage From 0.8V to VCC
˙Precision Feedback Reference Voltage: 0.8V (±2%)
˙Output Current: 2A (Max.)
˙Duty Cycle: 0~100%
˙Internal Fixed PWM Frequency: 1MHz
˙Low Quiescent Current: 100μA
˙No Schottky Diode Required
˙Built-in Soft Start
˙Current Mode Operation
˙Over Temperature Protection
˙Package: SOP-8L

三.应用范围

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Ø Cellular Telephone

Ø Wireless and DSL Modems

Ø Digital Still Cameras

Ø Portable Products

Ø MP3 Players    

四.技术规格书（产品PDF)

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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！

 

五.产品封装图

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六.电路原理图

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七.相关芯片选择指南

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同步降压（Buck）转换器SYNCHRONOUS STEP-DOWN(BUCK)   CONVERTERS
Part No.	VIN		Load	ISW Limit	Feedback	Switching	Soft	Notes	Package	Status
	(Min)	(Max)	Current	(Typ)	Voltage	Frequency	Start
	(V)		(A)	(A)	(V)	(kHz)
CXSD6240	2.5	5.5	0.8	1.25	0.6	1500	Internal	Internal Comp	SOT23-5	MP
CXSD6241	2.5	5.5	1	1.5	0.6	1500	Internal	Internal Comp	TSOT23-5L /SOT23-5L/DFN-6L	MP
CXSD6242	2.5	5.5	1.5	2.35	0.6	1500	Internal	Internal Comp	SOP8E DFN10/MSOP10E	MP
CXSD6243	2.5	5.5	2	3.35	0.6	1500	Internal	Internal Comp	SOP8E DFN10/MSOP10E	MP
CXSD6244	2.5	5.5	3	5	0.6	1500	Internal	Internal Comp	SOP8E DFN10 MSOP10E	MP
CXSD6245	2.5	5.5	1A*2	1.5	0.6	1500	Internal	Dual Channel	MSOP10E DFN10	MP
CXSD6246	2.5	5.5	1A*2	1.5	0.6	1500	Internal	Dual Channel	DFN12	MP
CXSD6247	2.5	5.5	1A*2	1.5	0.6	1500	Internal	Dual Channel	DFN10	MP
CXSD6248	2.5	5.5	2	3.3	0.6	1500	Internal	Internal Comp	SOP8E	MP
CXSD6249	2.5	5.5	2	3.3	0.8	1000	Internal	Internal Comp	SOP8E	MP
CXSD6250	2.5	5.5	3	5	0.8	1000	Internal	Internal Comp	SOP8E	MP
CXSD6251	4.75	23	2	3.4	0.923	340	External	External Comp	SOP8 SOP8E	MP
CXSD6252	4.75	23	3	3.4	0.923	340	External	External Comp	SOP8E	MP