rt8458 Richtek Technology Corporation, rt8458 Datasheet - Page 5

• Manufacturer Part Number: rt8458
• Description: High Efficiency Pwm Buck Led Driver Controller
• Manufacturer: Richtek Technology Corporation

Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for
Note 2. θ
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
DS8458-00 March 2011
LED Dimming
Analog Dimming ACTL Pin Input
Current
LED Current Off Threshold at
ACTL
VC Threshold for PWM Switch Off V
Thermal Protection
Thermal Shutdown Temperature
stress ratings. 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 for extended
periods may remain possibility to affect device reliability.
thermal measurement standard.
JA
is measured in natural convection at T
Parameter
I
V
T
ACTL
SD
ACTL_Off
VC
Symbol
A
= 25°C on a low effective thermal conductivity test board of JEDEC 51-3
Test Conditions
Min
150
--
--
--
1.25
Typ
--
--
1
RT8458
www.richtek.com
Max
0.1
--
--
--
Unit
μA
°C
V
V
5