RT8482GS Richtek USA Inc, RT8482GS Datasheet - Page 9

• 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

(500mA/Div)
DS8482-00 August 2010
(10V/Div)
(50V/Div)
I
OUT
(2V/Div)
V
V
GATE
EN
OUT
1.21
1.20
1.19
1.18
1.17
1.16
1.15
2.5
2.0
1.5
1.0
0.5
0.0
0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
4
8
LED Current vs. ACTL
OVP vs. Input Voltage
12
Power Off from EN
Time (250μs/Div)
Input Voltage (V)
16
ACTL (V)
20
V
IN
= 24V, R
24
1
1.1 1.2 1.3 1.4
28
SENS
OVP_H
OVP_L
= 65mΩ
32
36
(200mA/Div)
(10V/Div)
(20V/Div)
I
OUT
(2V/Div)
V
V
GATE
1.21
1.20
1.19
1.18
1.17
1.16
1.15
OUT
EN
2.5
2.0
1.5
1.0
0.5
0.0
-40 -25 -10
0
DCTL high level is 3V and low level is 0V,
DCTL = 10kHz, V
Boost Application, V
10
LED Current vs. DCTL Duty
OVP vs. Temperature
20
5
Power On from EN
30
Temperature
Time (250μs/Div)
IN
20
DCTL Duty (%)
= 24V, R
40
IN
35
= 24V, V
50
50
SENS
60
OUT
OVP_H
65
(°C)
= 65mΩ
RT8482
www.richtek.com
= 48V
70
80
OVP_L
80
95 110 125
V
IN
= 24V
90
100
9