RT8482GS Richtek USA Inc, RT8482GS Datasheet - Page 7

• Manufacturer Part Number: RT8482GS
• Description: IC LED DVR BUCK/BOOST 2A 8SOP
• Manufacturer: Richtek USA Inc

Specifications of RT8482GS

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 1028-1005-2

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.
Note 5. When the natural maximum duty cycle of 350kHz switching frequency is reached, the switching cycle will be skipped (not
Note 6. If connected with a 20kΩ serial resistor, ACTL and DCTL can go up to 36V.
DS8482-00 August 2010
LED Current Off Threshold at
ACTL
DCTL Input Current
PWM Control
Switching Frequency
Minimum Off Time
Switch Gate Driver
GBIAS Voltage
Gate Voltage High
Gate Voltage Low
GATE Drive Rise and Fall Time
PWM Switch Current Limit
Threshold
OVP and Soft-Start
OVP Threshold
OVP Input Current
Soft-Start Pin Current
Thermal Protection
Thermal Shutdown Temperature T
Thermal Shutdown Recovery
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.
JEDEC 51-7 thermal measurement standard. The measurement case position of θ
SOP package.
reset) as the operating condition requires to effectively stretch and achieve higher on cycle than the natural maximum
duty cycle set by the 350kHz switching frequency.
JA
is measured in natural convection at T
Parameter
(Note 5)
V
I
f
V
V
V
I
V
I
I
ΔT
DCTL
SW
SW_LIM
OVP
SS
SD
ACTL_OFF
GBIAS
Gate_H
Gate_L
OVP_th
Symbol
SD
A
0.3V ≤ V
I
I
I
I
I
1nF Load at GATE
0.7V ≤ V
V
GBIAS
Gate
Gate
Gate
Gate
= 25°C on a high effective thermal conductivity four-layer test board of
SS
≤ 2V
= −50mA
= −100μA
= 50mA
= 100μA
= 20mA
Test Conditions
DCTL
OVP
≤ 1.5V
≤ 6V
Min
280
--
--
--
--
--
--
--
--
--
--
--
--
--
--
--
JC
is on the exposed pad of the
0.25
1.18
Typ
350
250
145
110
0.3
8.5
7.2
7.8
0.1
15
10
--
--
6
RT8482
www.richtek.com
Max
420
0.5
0.1
--
--
--
--
--
--
--
--
--
--
--
--
--
Unit
kHz
mV
μA
μA
μA
ns
ns
°C
°C
V
V
V
V
V
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