參數(shù)資料
型號: NJU6051V
廠商: New Japan Radio Co., Ltd.
元件分類: LED驅(qū)動器
英文描述: White LED Driver with Automatic Dimming Control
中文描述: 白光LED驅(qū)動器的自動調(diào)光控制
文件頁數(shù): 1/20頁
文件大小: 192K
代理商: NJU6051V
Ver.2003-10-23
- 1 -
NJU6051
White LED Driver with Automatic Dimming Control
!
GENERAL DESCRIPTION
The
NJU6051
is a white LED driver with an automatic
dimming control. It contains an output driver, a PWM
controller, a luminance sensor control (power supply for
sensor & A/D converter), a step-up DC/DC converter, a serial
interface, etc.
The output driver ensures a 30mA maximum capability
which allows the connection of 8 white LEDs (4 series x 2
parallels). Depending on the ambient light sensed with an
external luminance sensor, the PWM controller controls
PWM duty in 8 steps preselected out of 64 steps. In addition,
the frequency of the DC/DC converter is high so that it
permits the use of small, low-profile inductors and capacitors
to minimize the footprint in space-conscious applications.
All of these benefits make the
NJU6051
suitable for the
battery-powered portable applications such as a cellular
phone, a camcorder, PDA, etc.
!
FEATURES
#
Drives up to 8 white LEDs (4 series x 2 parallels)
V
SW
= 18.0V(Max.), I
OUT
= 30mA
#
Built-in PWM Dimming Control
(Selectable 8 out of 64 steps)
#
Built-in Luminance Sensor Control (Power Supply for Sensor & A/D converter)
(No MPU-access required after initial setting)
#
Built-in Temperature Compensation Circuit to Suppress the Characteristic Degradation of LEDs
#
Uses Small Inductor and Capacitors
#
1.8V to 3.6V Operating Voltage for Logic Circuits (V
DDL
)
#
3.0V to 5.5V Operating Voltage for Step-up Circuits (V
DD
)
#
CMOS Technology
#
Package
: QFN20 / SSOP20
PRELIMINARY
!
PACKAGE OUTLINE
NJU6051KM1
NJU6051V
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NJU6052 制造商:NJRC 制造商全稱:New Japan Radio 功能描述:White LED Driver with Automatic Dimming Control
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NJU6052V 制造商:NJRC 制造商全稱:New Japan Radio 功能描述:White LED Driver with Automatic Dimming Control