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PDF NJU6048 Data sheet ( Hoja de datos )
| Número de pieza | NJU6048 | |
| Descripción | White LED Driver / SOT-23(MTP5) | |
| Fabricantes | JRC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NJU6048 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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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
IOUT = 20mA(typical)
# Uses Small Inductor and Capacitors
# 1.7V to 6.5V Operating Voltage for Step-up Circuits (VDD)
# Low Switch RDS (ON)
VSW = 18V, RDS=0.8Ω (ISW=150mA)
# OVP Function
# CMOS Technology
# Package
: SOT-23 5 pin (MTP-5)
! PIN CONFIGURATION (TOP VIEW)
SW 1
VSS 2
FB 3
5 VDD
4 OVP
Ver.2005-06-09
-1-
1 page  
www.DataSheet4U.com
• TEST CIRCUITS
OVP Threshold Voltage
VIN
GND
4.7uF
NJU6048
VDD SW
OVP
NJU6048
FB
VSS
A
A
V
Quiescent Current
VIN A
GND
4.7uF
15Ω
VDD SW
OVP
NJU6048
FB
VSS
5V
0.3V
Ver.2005-06-09
-5-
5 Page 
www.DataSheet4U.com
! TYPICAL APPLICATION CIRCUITS
(1) 4 white LEDs
VIN
C1
L1
VDD SW
D1
OVP
VOUT
C2
NJU6048
VSS FB
RLED1
Referential List of External Components
IC1
L1
D1
C1
C2
RLED1
LED1 to 4
Component
LED Driver IC
Inductor
Schottky Diode
Ceramic Capacitor
Ceramic Capacitor
Chip Resistor
White LED
Supplier / Parts Number
Qty Value
NJRC / NJU6048
1-
Murata / LQH32CN100K23 1 10uH
On Semiconductor / MBR0530
1
-
Murata / GRM21BF11A475Z
1 4.7uF/10V
Taiyo Yuden / TMK325BJ105MD
1
1uF/25V
Standard
Nichia / NSCW215T
1 12Ω
4-
Ver.2005-06-09
- 11 -
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet NJU6048.PDF ] | |
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