RT9284B-20GJ6E Richtek USA Inc, RT9284B-20GJ6E Datasheet - Page 8

• Manufacturer Part Number: RT9284B-20GJ6E
• Description: IC LED DVR WHITE BCKLGT TSOT23-6
• Manufacturer: Richtek USA Inc

Specifications of RT9284B-20GJ6E

• Constant Current: Yes
• Internal Driver: Yes
• Type - Primary: Backlight, Flash/Torch
• Type - Secondary: White LED
• Mounting Type: Surface Mount
• Topology: PWM
• Number Of Outputs: 1
• Frequency: 900kHz ~ 1.5MHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Package / Case: SOT-23-6 Thin, TSOT-23-6
• Operating Temperature: -40°C ~ 85°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -

RT9284A/B
8
www.richtek.com
V
V
I
OUT
EN
LED
OUT
V
EN
V
I
LX
I
I
IN
IN
IN
IN
IN
4WLEDs, V
4WLEDs, V
(5V/Div)
(100mA/Div)
(10mA/Div)
(2V/Div)
(2V/Div)
(5V/Div)
(100mA/Div)
(5V/Div)
(2V/Div)
(10V/Div)
(100mA/Div)
IN
IN
Dimming Operation
Normal Operation
= 3.7V, I
= 3.0V, I
Inrush Current
Time (400ns/Div)
Time (500μs/Div)
Time (4μs/Div)
LED
LED
= 20mA, L = 10μH
= 20mA, L = 4.7μH
f = 100kHz, Duty = 50%
4WLEDs, V
I
LED
= 20mA, L = 10μH
IN
= 3.0V
V
V
OUT
V
V
OUT
EN
V
LX
I
I
IN
OUT
IN
IN
IN
LX
I
LX
4WLEDs, V
(5V/Div)
(2V/Div)
(10V/Div)
(100mA/Div)
(2V/Div)
(2V/Div)
(5V/Div)
(100mA/Div)
L = 10μH
(10V/Div)
(500mA/Div)
(20V/Div)
IN
Normal Operation
= 4.3V, I
Inrush Current
Time (500μs/Div)
Time (400ns/Div)
Time (25μs/Div)
DS9284A/B-06 June 2009
LED
OCP
= 20mA, L = 4.7μH
4WLEDs, V
I
LED
= 20mA, L = 10μH
IN
= 3.7V