RT8450BGCP Richtek USA Inc, RT8450BGCP Datasheet - Page 8

• Manufacturer Part Number: RT8450BGCP
• Description: IC LED DRIVER PWM 16TSSOP
• Manufacturer: Richtek USA Inc

Specifications of RT8450BGCP

• Internal Driver: Yes
• Type - Primary: Backlight
• Mounting Type: Surface Mount
• Topology: PWM, Step-Down (Buck), Step-Up (Boost)
• Number Of Outputs: 1
• Frequency: 400kHz ~ 600kHz
• Voltage - Supply: 4.5 V ~ 40 V
• Package / Case: 16-TSSOP (0.173", 4.40mm Width) Exposed pad
• Operating Temperature: -40°C ~ 85°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Other names: 1028-1003-2

RT8450/B
www.richtek.com
8
0.2000
0.1975
0.1950
0.1925
0.1900
0.1875
0.1850
0.1825
0.1800
1.220
1.215
1.210
1.205
1.200
600
500
400
300
200
100
0
-50
0
4
10
-25
LED Current vs. DCTL Duty
10
ACTL-Off vs. Temperature
20
OVP vs. Input Voltage
0
30
Temperature (°C)
16
Input Voltage (V)
DCTL Duty (%)
40
25
V
V
IN
DCTL
50
22
= 24V, f = 1kHz
= 0V to 3V, R2 = 0.35Ω
50
60
28
70
75
80
V
34
IN
100
= 24V
90
100
125
40
1.60
1.55
1.50
1.45
1.40
1.23
1.22
1.21
1.19
1.18
600
500
400
300
200
100
1.2
0
-50
0.2
4
-25
Current Limit vs. Input Voltage
0.4
10
LED Current vs. ACTL
OVP vs. Temperature
0
Temperature (°C)
0.6
16
Input Voltage (V)
DS8450/B-02 November 2009
25
ACTL (V)
0.8
22
50
V
IN
= 24V, R2 = 0.35Ω
28
1
75
V
1.2
34
100
IN
= 24V
125
1.4
40