NJW4616U2-TE1 [NJRC]
Display Driver, BICMOS, PDFP6;
| 型号： | NJW4616U2-TE1 |
| 厂家： | 
NEW JAPAN RADIO |
| 描述： | Display Driver, BICMOS, PDFP6 信息通信管理 光电二极管 |
| 文件： | 总4页 (文件大小：217K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NJW4616
Constant Current LED Driver with PWM Control
ꢀGENERAL DESCRIPTION
PACKAGE OUTLINE
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.
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
RS
VREF
( 0.2V )
Current Limit
TSD
LED OVP
Control
Logic
Standby Timer
GND
EN/PWM
PIN CONFIGRATION
5
2
4
1: EN/PWM
2: GND
3: RS
4: LED
5: VDD
1
2
3
* Please note that this device is still under the development and therefore the specifications are subject to change.
Ver.2013-09-24
- 1 -
NJW4616
ꢀ ABSOLUTE MAXIMUM RATINGS
(Ta=25°C)
PARAMETERS
SYMBOL
RATINGS
UNIT
VDD Power Supply
Output voltage
EN/PWM Pin Voltage
VDD
VLED
VENPWM
-0.3 to +45
-0.3 to +45
-0.3 to +45
625 (*1)
V
V
V
Power Consumption
PD
mW
2400 (*2)
Junction Temperature
Operating Temperature
Storage Temperature
Tj
-40 to +150
-40 to +105
-40 to +150
°C
°C
°C
Topr
Tstg
(*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
(Ta=25°C)
PARAMETERS
Operating Voltage
Output Current
SYMBOL
VDD
CONDITIONS
MIN
2.5
20
-
TYP MAX Unit
-
-
-
40
300
40
V
mA
V
ILED
VLED
Output Voltage
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VDD=12V, VLED=1.0V, RS=2Ω, VENPWM=VDD, Ta=25°C)
PARAMETERS
Quiescent Current
SYMBOL
CONDITIONS
MIN TYP MAX
Unit
µA
µA
%
µA
ms
V
V
V
µA
µA
IDD
-
-
-2
-
340
-
-
-
25
-
-
-
7
4
550
0.1
+2
0.1
50
VDD
VDD
0.5
-
Quiescent Current at OFF State
Output Current Accuracy
Output Pin Leak Current
OFF Delay Time
EN/PWM Pin ON Voltage1
EN/PWM Pin ON Voltage2
EN/PWM Pin OFF Voltage
EN/PWM Pin Input Current
RS Pin Leak Current
IDD_OFF
∆ILED
ILEAK
VENPWM=GND
VENPWM=GND, VDD=40V, VLED =40V
10
0.7VDD
3.5
0
-
tD_OFF
VENPWM_ON
1
VDD<5V, ILED=OFF→ON
VDD≥5V, ILED=OFF→ON
ILED=ON→OFF
VENPWM_ON
VENPWM_OFF
IENPWM
2
IOUT_RS
LED=OPEN
-
-
V
ENPWM=L→H, ILED=OFF→ON,
RS=0.62Ω
ENPWM=H→L, ILED=ON→OFF,
PWM Pin ON Delay Time
PWM Pin OFF Delay Time
tPWM_ON
tPWM_OFF
-
-
10
-
-
µs
µs
V
1.2
RS=0.62Ω
RS = 0Ω,
LED Short Protection
Detect Voltage
Maximum Output Current
-
-
-
VLED_SHORT
ILED_MAX
22
V
ILED =ILED MAX→ ILED MAX × 0.5
RS =0Ω
330
600
mA
* Please note that this device is still under the development and therefore the specifications are subject to change.
Ver.2013-09-24
- 2 -
NJW4616
ꢀTYPICALAPPLICATION
VDD/VLED
VDD
LED
VREF
( 0.2V )
Current Limit
TSD
LED OVP
RS
Control
Logic
Standby Timer
GND
EN/PWM
0.2(V )
The Rs Resistance Setting formula: RS (Ω) =
I
LED (A)
* Please note that this device is still under the development and therefore the specifications are subject to change.
Ver.2013-09-24
- 3 -
NJW4616
MEMO
[CAUTION]
The specifications on this databook are only
given for information, without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including the
industrial rights.
Ver.2013-09-24
- 4 -
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