带有负载开关控制器高压开关电容电荷泵CXUS65177从8V到24V的输入电压可以转换成12V到36V的输出电源4个控制信号输入4个用于外部NMOS交换机的12V驱动程序

CXUS65177是一种高压开关电容电荷泵，提供1.5倍输入电压的调节输出电压。从8V到24V的输入电压可以转换成12V到36V的输出电源。该装置是笔记本电脑电池供电转换应用的理想选择，8V电源下的典型工作电流为150μa，24V电源下的典型工作电流为190μa。CXUS65177有一个NMOS开漏输出管脚，用于电源良好指示。当VOUT>1.5 x VIN x 90%时，NMOS将立即关闭，PG引脚将被外部电阻拉高。CXUS65177包含一个嵌入式12伏LDO，为由ON信号控制的驱动器提供电源电压。放电网络连接到22Ω电阻器，以便在控制输入信号打开时关闭低压系统。CXUS65177包含一个过温电路，用于在连续输出短路条件下保护设备。CXUS65177提供TQFN3X3-20封装（包括热垫

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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The CXUS65177 is a high-voltage switched-capacitor charge pump that provides the regulated output voltage of 1.5x input voltage. Input voltages ranging from 8V to 24V can be converted into a 12V to 36V output supply. The device is ideal for battery-powered conversion applications in notebook computers with a typical operating current of 150μA at 8V supply and 190μA at 24V supply. The CXUS65177 has a NMOS open-drain output pin for power good indication. When VOUT > 1.5 x VIN x 90%, the NMOS will be turned off immediately and PG pin will be pulled high by external resistor. The CXUS65177 contains an embedded 12-V LDO to provide the supply voltage to the drivers controlled by ON signals. The discharging networks are connected to the 22Ω resistor to shut down the low-voltage system while control input signals ON are not ready. The CXUS65177 contains an over-temperature circuit to protect the device under continuous output short circuit conditions. The CXUS65177 is available in TQFN3X3-20 package (thermal pad included).

   产品特点 返回TOP

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„ Input Range: 8V to 24V 

„ Output Range: 12V to 36V 

„ 150μA Quiescent Current at 8V Supply Voltage and 190μA Quiescent Current at 24V Supply Voltage 

„ ±3% Regulated Output 

„ Power Good Function 

„ Power Good of Open Drain (Monitor AC VIN Only) 

„ Embedded a 12-V LDO 

„ 4 Control Signal Inputs 

„ 4 12V-Drivers for external NMOS switches 

„ 4 Discharging Networks for 22Ω 

„ Over-Temperature Protection 

„ Output Short Circuit Protection 

„ TQFN3X3-20 Package

   应用范围 返回TOP

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„ Notebook Computers

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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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Charge   Pump and Current Source
Part   NO.	Vin(V) min.	Vin(V) max.	IOUT (mA)	FOSC (kHz)	VOUT (V)	LED  Number	Eff. (%)	Note	Package
CXUS65171	3	5.5	600	250	1x/2x	1	--	Flash LEDdriver,Flash/Torch/SHDN	TDFN3X3-10
CXUS65172	2.7	5.5	80	250	1x/2x	4	90	4-CH LED in Parallel,PWM control16  levels dimming control	TDFN2.5X2.5-10 TQFN3X3-16
CXUS65173	2.7	5	90	1000	4.5/5	--	88	EN,GND,VOUT,C+,VIN,C-,Boost	TSOT-23-6/TDFN2X2-6
CXUS65174	1.8	5	60	270	-VIN	--	90	IN,EN,GND,C-,C+,OUT,Inverting	SOT-23-6/TDFN2X2-6
CXUS65175	1.8	5	60	270	-VIN	--	90	NC,CP+,GND,CP-,OUT,NC,NC,IN	SOP-8
CXUS65176	8	24	10	350	1.5x	--	--	PG,D_CAP	MSOP-8
CXUS65177	8	24	10	370	1.5x	--	--	PG,D_CAP,12V,ONx,DRIVERx	TQFN3X3-20
CXUS65178	4.5	5.5	14	--	2x	--	--	2-NMOSFET driver,20mA discharging	TQFN3X3-20