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
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产品概述 返回TOP
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
„ 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
„ Notebook Computers
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产品封装图 返回TOP
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Charge Pump and Current Source |
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Part NO. |
Vin(V) min. |
Vin(V) max. |
IOUT (mA) |
FOSC (kHz) |
VOUT (V) |
LED Number |
Eff. (%) |
Note |
Package |
|
3 |
5.5 |
600 |
250 |
1x/2x |
1 |
-- |
Flash LEDdriver,Flash/Torch/SHDN |
TDFN3X3-10 |
|
|
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 |
|
|
2.7 |
5 |
90 |
1000 |
4.5/5 |
-- |
88 |
EN,GND,VOUT,C+,VIN,C-,Boost |
TSOT-23-6/TDFN2X2-6 |
|
|
1.8 |
5 |
60 |
270 |
-VIN |
-- |
90 |
IN,EN,GND,C-,C+,OUT,Inverting |
SOT-23-6/TDFN2X2-6 |
|
|
1.8 |
5 |
60 |
270 |
-VIN |
-- |
90 |
NC,CP+,GND,CP-,OUT,NC,NC,IN |
SOP-8 |
|
|
8 |
24 |
10 |
350 |
1.5x |
-- |
-- |
PG,D_CAP |
MSOP-8 |
|
|
8 |
24 |
10 |
370 |
1.5x |
-- |
-- |
PG,D_CAP,12V,ONx,DRIVERx |
TQFN3X3-20 |
|
|
4.5 |
5.5 |
14 |
-- |
2x |
-- |
-- |
2-NMOSFET driver,20mA discharging |
TQFN3X3-20 |
|
