RT8453BGSP Richtek USA Inc, RT8453BGSP Datasheet - Page 7

• Manufacturer Part Number: RT8453BGSP
• Description: IC LED DVR BUCK 40V 1.5A 8SOP
• Manufacturer: Richtek USA Inc

Specifications of RT8453BGSP

• Constant Current: Yes
• Internal Driver: Yes
• Type - Primary: Backlight, General Purpose
• Mounting Type: Surface Mount
• Topology: PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Frequency: 400kHz ~ 600kHz
• Voltage - Supply: 4.5 V ~ 40 V
• Package / Case: 8-SOIC (0.154", 3.90mm Width) Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Operating Temperature: -
• Other names: 1028-1004-2

(200mA/Div)
(200mA/Div)
DS8453B-00 August 2010
(10V/Div)
I
I
(5V/Div)
(5V/Div)
LED
LED
V
V
V
LX
LED
EN
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
Supply Current vs. Input Voltage
Continuous Mode Operation
6
12
Power On from EN
Input Voltage(V)
Time (50μs/Div)
Time (1μs/Div)
3 LEDs, V
18
24
IN
= 12V, I
3 LEDs, V
30
OUT
T
= 350mA
A
36
IN
= 25°C
= 12V
42
(200mA/Div)
(200mA/Div)
(10V/Div)
I
I
(5V/Div)
LED
(5V/Div)
LED
V
V
V
EN
LED
EN
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-50
Supply Current vs. Temperature
-25
Continuous Mode Operation
Power Off from EN
0
Temperature (°C)
Time (50μs/Div)
Time (1μs/Div)
3 LEDs, V
25
RT8453B
50
IN
= 24V, I
3 LEDs, V
www.richtek.com
75
OUT
V
= 350mA
IN
100
IN
= 12V
= 12V
125