LED Driver. NJW4616 Datasheet

NJW4616 Driver. Datasheet pdf. Equivalent

NJW4616 Datasheet
Recommendation NJW4616 Datasheet
Part NJW4616
Description Constant Current LED Driver
Feature NJW4616; NJW4616 Constant Current LED Driver with PWM Control GENERAL DESCRIPTION The NJW4616 is a constant.
Manufacture New Japan Radio
Datasheet
Download NJW4616 Datasheet




New Japan Radio NJW4616
NJW4616
Constant Current LED Driver with PWM Control
GENERAL DESCRIPTION
The NJW4616 is a constant current LED Driver with PWM control.
45V resisting constant current control and PWM control circuit can
be offered with small package.
It can achieve luminance control multiple white or blue and red
LEDs. It can contribute to the reliability improvement of the system
because it has an overcurrent protection and thermal shutdown
circuit.
„ PACKAGE OUTLINE
NJW4616U2
(SOT-89-5)
FEATURES
Operating Voltage Range
2.5V to 40V
Recommended LED Drive Voltage VLED=40V(max.)
LED Output Current
ILED=300mA(max.)
Output Current Accuracy
±2.0%
To 11 of White LED can be operated. (at LED Vf=3.4V)
Current Consumption
450µA typ.
With PWM Luminance Control and ON/OFF Control
Internal Over Current Protection Circuit
Internal Thermal Shutdown Circuit
Package
SOT-89-5
„ BLOCK DIAGRAM
VDD
LED
VREF
( 0.2V )
Current Limit
TSD
LED OVP
Standby Timer
GND
Control
Logic
EN/PWM
RS
„ PIN CONFIGRATION
524
1 23
1: EN/PWM
2: GND
3: RS
4: LED
5: VDD
* Please note that this device is still under the development and therefore the specifications are subject to change.
Ver.2013-09-24
-1-



New Japan Radio NJW4616
NJW4616
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C)
PARAMETERS
SYMBOL
RATINGS
UNIT
VDD Power Supply
Output voltage
EN/PWM Pin Voltage
Power Consumption
Junction Temperature
Operating Temperature
Storage Temperature
VDD
VLED
VENPWM
PD
Tj
Topr
Tstg
-0.3 to +45
-0.3 to +45
-0.3 to +45
625 (*1)
2400 (*2)
-40 to +150
-40 to +105
-40 to +150
V
V
V
mW
°C
°C
°C
(*1): Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JDEC standard, 2Layers)
(*2): Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JDEC standard, 4Layers),
Internal Cu area: 74.2×74.2mm
RECOMMENDED OPERATING CONDITIONS
PARAMETERS SYMBOL
CONDITIONS
Operating Voltage
Output Current
Output Voltage
VDD
ILED
VLED
(Ta=25°C)
MIN TYP MAX Unit
2.5 - 40 V
20 - 300 mA
- - 40 V
„ ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VDD=12V, VLED=1.0V, RS=2, VENPWM=VDD, Ta=25°C)
PARAMETERS
SYMBOL
CONDITIONS
MIN TYP MAX Unit
Quiescent Current
IDD
- 340 550 µA
Quiescent Current at OFF State
IDD_OFF
VENPWM=GND
- - 0.1 µA
Output Current Accuracy
ILED
-2 -
+2 %
Output Pin Leak Current
ILEAK
VENPWM=GND, VDD=40V, VLED =40V
-
-
0.1 µA
OFF Delay Time
tD_OFF
10 25 50 ms
EN/PWM Pin ON Voltage1
VENPWM_ON1 VDD<5V, ILED=OFFON
0.7VDD - VDD V
EN/PWM Pin ON Voltage2
VENPWM_ON2 VDD5V, ILED=OFFON
3.5 - VDD V
EN/PWM Pin OFF Voltage
VENPWM_OFF ILED=ONOFF
0 - 0.5 V
EN/PWM Pin Input Current
IENPWM
-7
- µA
RS Pin Leak Current
IOUT_RS LED=OPEN
-4
- µA
PWM Pin ON Delay Time
tPWM_ON
VENPWM=LH, ILED=OFFON,
RS=0.62
- 10 - µs
PWM Pin OFF Delay Time
tPWM_OFF
VENPWM=HL, ILED=ONOFF,
RS=0.62
- 1.2
-
µs
LED Short Protection
Detect Voltage
VLED_SHORT
RS = 0,
ILED =ILED MAXILED MAX × 0.5
- 22
-
V
Maximum Output Current
ILED_MAX RS =0
330 600
-
mA
* Please note that this device is still under the development and therefore the specifications are subject to change.
-2-
Ver.2013-09-24



New Japan Radio NJW4616
TYPICAL APPLICATION
VDD/VLED
NJW4616
VDD
VREF
( 0.2V )
Current Limit
TSD
LED OVP
Standby Timer
GND
LED
Control
Logic
RS
EN/PWM
The Rs Resistance Setting formula:
RS () =
0.2(V )
ILED (A)
* Please note that this device is still under the development and therefore the specifications are subject to change.
Ver.2013-09-24
-3-







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