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PDF RT8300 Data sheet ( Hoja de datos )
| Número de pieza | RT8300 | |
| Descripción | 4-CH 150mA Constant Current LED Driver | |
| Fabricantes | Richtek | |
| Logotipo |  |
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®
RT8300
4-CH 150mA Constant Current LED Driver
General Description
The RT8300 is a 4-CH 150mA constant current sink LED
driver capable of driving four channel constant currents
with good matching ability and wide range VF variations.
The RT8300 provides four channel constant currents with
less than 3% differences in output current value among
the 4-CH and ICs respectively. The constant current output
is adjustable from 5mA to 150mA via an external resistor
(RISET). The LED brightness can also be adjusted via the
PWMI pin with pulse width modulation from 0% to 100%.
Thus allowing for wide VF variation. Moreover, the RT8300
provides Dynamic Headroom Control (DHC) function which
can generate feedback signal to DC/DC control loop and
regulate the output voltage of the RT8300.
The RT8300 features LED open/short protection. If any
channel has open or short condition, that particular output
channel will be turned off and the FAULT pin will pull low.
The RT8300 also supports Over Temperature Protection
(OTP). When OTP is triggered, all output channels will be
turned off and the FAULT pin will pull low.
The RT8300 is available in DIP-16 (BW) and SOP-16
packages to achieve optimized solution for PCB space.
Features
z 4 Constant Current Output Channels
z Wide Power Supply Voltage Range : 5V to 24V
z Maximum Constant Current Output Voltage : 60V
z Low Dropout Voltage : 600mV at 120mA Output
Current
z Constant Output Current Accuracy Between
Channels : <±3%
z Dynamic Headroom Control (DHC) Function
z Constant Output Current Range : 5mA to 150mA
z Support 400ns Narrow PWM Pulse
z Fault Detection for OTP, LED Open/Short
z RoHS Compliant and Halogen Free
Applications
z LED Backlight
Marking Information
RT8300GN
RichTek
RT8300
GNYMDNN
RT8300GN : Product Number
YMDNN : Date Code
Ordering Information
RT8300
Package Type
N : DIP-16 (BW)
S : SOP-16
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
RT8300GS
RT8300
GSYMDNN
RT8300GS : Product Number
YMDNN : Date Code
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8300-00 January 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
1 page  
RT8300
Parameter
FB Pin Output Current
Output Leakage Current
Thermal Protection
Temperature
Thermal Protection
Temperature Hysteresis
Supply Current
Shutdown Current
PWMI to LEDx
Propagation
Delay Time
Low to High
Transition
High to Low
Transition
Shutdown Delay Time
Power On Reset Time
Soft-Start Time
Fault Blanking Time
PWMI High Blanking Time
Fault Detection Time
Symbol
IFBH
IFBL
IOH
TOTP
ΔTOTP
IDD(ON)
ISHDN
tPLH
tPHL
tSHDN
tRESET
tSS
tFB
tRB
tF
Test Conditions
VFB = 3.3V
VFB = 0.2V
VLEDx = 50V, all CHs off,
PWMI = Low
Junction Temperature
Junction Temperature
RISET = 3.6kΩ, PWMI = High
Shutdown
PWM = 100%
Min Typ
-- 50
-- 1
-- ---
-- 140
-- 50
-- 3
-- 6
0.1 0.3
0.05
--
--
--
--
--
--
0.1
32
256
128
32
4
2
Max
--
--
0.5
--
--
5
20
0.6
0.4
--
--
--
--
--
--
Unit
μA
mA
μA
°C
°C
mA
μA
μs
ms
μs
ms
ms
μs
μs
Note 1. Stresses beyond those listed “Absolute Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in
the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may
affect device reliability.
Note 2. θJA is measured at TA = 25°C on a high effective thermal conductivity four-layer test board per JEDEC 51-7. θJC is
measured at the exposed pad of the package.
Note 3. The device is not guaranteed to function outside its operating conditions.
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8300-00 January 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
5
5 Page 
RT8300
AH
M
JB
F
C
I
D
Symbol
A
B
C
D
F
H
I
J
M
Dimensions In Millimeters
Min
9.804
Max
10.008
3.810
3.988
1.346
1.753
0.330
0.508
1.194
1.346
0.178
0.254
0.102
0.254
5.791
6.198
0.406
1.270
Dimensions In Inches
Min
0.386
Max
0.394
0.150
0.157
0.053
0.069
0.013
0.020
0.047
0.053
0.007
0.010
0.004
0.010
0.228
0.244
0.016
0.050
16–Lead SOP Plastic Package
Richtek Technology Corporation
5F, No. 20, Taiyuen Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789
Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should
obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot
assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be
accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries.
DS8300-00 January 2012
www.richtek.com
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet RT8300.PDF ] | |
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