双路输出800mA同步整流降压DC/DC转换器CXSB6609带延迟VD手动复位功能UVLO欠压锁定

CXSB6609系列由双通道同步整流降压DC-DC转换器和带延迟VD构成。DC-DC转换器是内置了0.35Ω(TYP.)P通道驱动晶体管,及0.35Ω(TYP.)N通道同步整流开关晶体管的降压用同步整流DC/DC转换器。通过降低内置晶体管的导通电阻，能提供高达800mA的高效率,稳定电流。开关频率高达1MHz,能选择小型电感。内置了UVLO欠压锁定(Under Voltage Lock Out)功能，输入电压在1.8V以下（CXSB6609A为2.7V以下）时，强制停止内部驱动晶体管

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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    CXSB6609系列由双通道同步整流降压DC-DC转换器和带延迟VD构成。DC-DC转换器是内置了0.35Ω(TYP.)P通道驱动晶体管,及0.35Ω(TYP.)N通道同步整流开关晶体管的降压用同步整流DC/DC转换器。通过降低内置晶体管的导通电阻，能提供高达800mA的高效率,稳定电流。开关频率高达1MHz,能选择小型电感。内置了UVLO欠压锁定(Under Voltage Lock Out)功能，输入电压在1.8V以下（CXSB6609A为2.7V以下）时，强制停止内部驱动晶体管。内置了电压检测器,可以由外置电容任意地设定延迟时间。此外,附带手动复位功能，可以在任意时机送出复位信号。The CXSB6609 series consists of 2 channel synchronous step-down DC/DC converters and a voltage detector with delay circuit built-in. The DC/DC converter block incorporates a P-channel 0.35Ω (TYP.) driver transistor and a synchronous N-channel 0.35Ω (TYP.) switching transistor. By minimizing ON resistance of the built-in transistors, the CXSB6609 series can deliver highly efficient and a stable output current up to 800mA. With high switching frequencies of 1MHz, a choice of small inductor is possible. The series has a built-in UVLO (under-voltage lock-out) function, therefore, the internal P-channel driver transistor is forced OFF when input voltage becomes 1.8V or lower (for CXSB6609A, 2.7V or lower). The voltage detector block can be set delay time freely by connecting an external capacitor. With the manual reset function, the series can output a reset signal at any time.

   产品特点 返回TOP

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   应用范围 返回TOP

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●DVDs 

●Blue-ray Disk 

●LCD TVs, LCD modules 

●Multifunctional printers 

●Photo printers 

●Set top boxes

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

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电路原理图 返回TOP

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多通道型DC/DC转换器
产品名称	特点/类型	封装	控制	VIN MIN	VIN MAX	VOUT MIN	VOUT MAX	IOUT IIN	FB/VOUT 电压精度	振荡频率	限制 电流	消耗 电流	温度范围
				(V)	(V)	(V)	(V)	mA	%	kHz	A	μA	℃
CXSB6604	升压+升压	MSOP10 USP10	PWM/PFM	0.9	10	1.5	30	500	±2.0	100,180, 300,500		70	-40～＋85
CXSB6605	升压+降压	MSOP10 USP10	PWM/PFM	2	10	1.5	30	500	±2.0	100,300,500		70	-40～＋85
CXSB6606	降压+降压	MSOP10 USP10	PWM/PFM	2	10	0.9	6	1000	±2.0	100,300,500		60	-40～＋85
CXSB6607	升压+反转	MSOP10 USP10	PWM/PFM	2	10	1.5	30	500	±2.0	100,300,500		90	-40～＋85
CXSB6608	降压+反转	MSOP10 USP10	PWM/PFM	2	10	0.9	6	1000	±2.0	100,300,500		80	-40～＋85
CXSB6609	2ch降压+电 压检测器	QFN20	PWM	2.5	5.5	1.2	4	800	±2.0	1000	1	950	-40～＋85
CXSB6610	升压+电压泵x2	QFN20	PWM	2.5	5.5	5.5	19	500	±1.5	ADJ	1.1	2	-40～＋85
CXSB6611	2ch升压+反转	QFN24	PWM	2.7	5.5	4	18	500	±1.5	1200	2	170	-40～＋85
CXSB6612	降压+降压	USP12B01	PWM,PWM/PFM	2.7	6	0.8	4	600	±2.0	1200		22	-40～＋85
CXSB6613	降压+LDO	USP12B01	PWM,PWM/PFM	2.7	6	0.8	4	600	±2.0	3000		22	-40～＋85
CXSB6614	降压+Dual LDO	USP12B01	PWM,PWM/PFM	2.7	6	2.3	2.3	600	±2.0	3000			-40～＋85
CXSB6615	降压+LDO+VD	USP12B01	PWM/PFM	2.7	6	0.8	4	600	±2.0	1200；3000			-40～＋85