The CXAC85183 is a step-up DC/DC converter specifically designed to drive white LEDs with a
constant current. The device can drive two, three,four, or five LEDs in series from a Li-Ion cell.
Series connection of the LEDs provides identical LED current resulting in uniform brightness and
eliminating the need for ballast resistors. The CXAC85183 switches at 1MHz, allowing the use of any
tiny external components. The output capacitor can be as small as 1μF, saving space and cost
versus alternative solutions. A low 95mV feedback voltage minimizes power loss in the current setting
resistor for better efficiency.

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[ CXAC85183 ]"
目录
7.相关产品
产品概述 返回TOP
The CXAC85183 is a step-up DC/DC converter specifically designed to drive white LEDs with a
constant current. The device can drive two, three,four, or five LEDs in series from a Li-Ion cell.
Series connection of the LEDs provides identical LED current resulting in uniform brightness and
eliminating the need for ballast resistors. The CXAC85183 switches at 1MHz, allowing the use of any
tiny external components. The output capacitor can be as small as 1μF, saving space and cost
versus alternative solutions. A low 95mV feedback voltage minimizes power loss in the current setting resistor for better efficiency.
CXAC85183 is available in low profile SOT-23-5L package.
产品特点 返回TOP
Inherently Matched LED Current.
High Efficiency: 85% Typical.
Drives Up to Four LEDs from a 3.0V Supply.
Drives Up to Six LEDs from a 3.6V Supply.
Fast 1MHz Switching Frequency.
Uses Tiny 1mm Tall Inductors.
Requires Only 1μF Output Capacitor.
Low Profile SOT-23-5L Packaging.
100% Lead (Pb)-Free.
应用范围 返回TOP
Cellular Phones
PDAs, Handheld Computuers
Digital Camera
MP3 Players
GPS Receivers
技术规格书(产品PDF) 返回TOP
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产品封装图 返回TOP
电路原理图 返回TOP
相关芯片选择指南 返回TOP 更多同类产品.....
AC/DC PWM Controller |
|||||||||
Product |
Status |
Device Description |
VIN(min~max) |
VOUT |
IOUT |
IQ(typ) |
Vfb |
Frequency |
Pkg |
Active |
1.9A固定频率白光驱动 |
2.5~5V |
3-27v |
1.9A |
170uA |
0.3V |
1.2MHZ |
SOT23-6 |
|
NRFED |
1A白光驱动 |
2.7~4.5V |
ADJ |
2.5A |
100uA |
0.1V |
1MHZ |
SOT23-6 |
|
NRFED |
450uA |
60KHZ |
420mA |
TO92 |
|||||
NRFED |
700uA |
40KHZ |
420mA |
SOT23-6 SOP8 |