rt8470 Richtek Technology Corporation, rt8470 Datasheet - Page 4

• Manufacturer Part Number: rt8470
• Description: 1.2a/1a, Hysteretic, High Brightness Led Driver With Internal Switch
• Manufacturer: Richtek Technology Corporation

RT8470
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.
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Minimum Switch On Time
Minimum Switch Off Time
Quiescent Supply Current with
Output Off
Quiescent Supply Current with
Output Switching
Internal Propagation Delay
Sense Pin Input Current
Thermal Shutdown
Thermal Shutdown Hysteresis
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.
measurement standard. The measurement case position of θ
JA
is measured in natural convection at T
Parameter
t
t
I
I
t
I
T
ΔT
ON(MIN)
OFF(MIN)
VIN, Off
VIN, On
PD
SENSE
SD
Symbol
SD
A
= 25°C on a single-layer and four-layer test board of JEDEC 51 thermal
LX Switch On
LX Switch Off
V
ADJ Pin Floating, f
V
V
ADJ
IN
SENSE
= 8V
= 0V
Test Conditions
= V
IN
JC
– 0.1V
is on the exposed pad of the package.
SW
= 250kHz,
Min
--
--
--
--
--
--
--
--
DS8470-03 March 2011
1000
Typ
210
170
450
300
150
25
30
Max
--
--
--
--
--
--
--
--
Unit
μA
μA
nA
ns
ns
ns
°C
°C