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NJU6048F Datasheet

  • NJU6048F

  • High Efficiency White LED Driver

  • 13頁(yè)

  • NJRC

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NJU6048
PRELIMINARY
High Efficiency White LED Driver
!
GENERAL DESCRIPTION
The
NJU6048
is a high-efficiency white LED driver. It
contains a high-efficiency step-up DC/DC converter and an
output driver. The IC can output max.18V and drive as many
as 4 white LEDs in series with a constant current, which
guarantees the LEDs with uniform brightness.
The high frequency of the step-up converter permits the
use of small, low-profile inductors and capacitors to
minimize the footprint in space-conscious applications. The
NJU6048 also features low operating voltage of 1.7V and the
small package SOT-23 (MTP-5).
All of these benefits make the
NJU6048
suitable for the
battery-powered portable applications such as cellular phones,
camcorders, PDAs, etc.
!
PACKAGE OUTLINE
NJU6048F
!
FEATURES
#
Drives Up to 4White LEDs in Series
#
#
#
#
#
#
I
OUT
= 20mA(typical)
Uses Small Inductor and Capacitors
1.7V to 6.5V Operating Voltage for Step-up Circuits (V
DD
)
Low Switch R
DS
(ON)
V
SW
= 18V, R
DS
=0.8鈩?(I
SW
=150mA)
OVP Function
CMOS Technology
Package
: SOT-23 5 pin (MTP-5)
!
PIN CONFIGURATION (TOP VIEW)
SW
V
SS
FB
1
2
3
5
V
DD
4
OVP
Ver.2005-06-09
-1-

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