RT8498 Datasheet, PDF (4/12 Pages) Richtek Technology Corporation – 8V Multi-Topology LED Driver with Dimming Control

RT8498
Parameter
DCTL Input
Voltage
Logic-High
Logic-Low
Symbol
VDCTL_H
VDCTL_L
Test Conditions
Min Typ Max Unit
2
--
--
V
--
--
0.1
PWM Boost Converter
Switching Frequency
SW RDS(ON)
SW Current Limit
Over Voltage Protection
Over Voltage Hysteresis
fSW
ILIM_SW
VCC_OVP
--
350
--
kHz
--
0.1
--

2
2.5
--
A
18.3 19.6 20.9 V
--
0.6
--
V
Temperature Protection
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
TSD
TSD
--
150
--
C
--
10
--
C
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 under natural convection (still air) at TA = 25°C with the component mounted on a high effective-
thermal-conductivity four-layer test board on a JEDEC 51-7 thermal measurement standard.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Copyright ©2017 Richtek Technology Corporation. All rights reserved.
www.richtek.com
4
is a registered trademark of Richtek Technology Corporation.
DS8498-01 April 2017