RT9300AGE Richtek USA Inc, RT9300AGE Datasheet - Page 2

• Manufacturer Part Number: RT9300AGE
• Description: IC LED DVR WHITE BCKLGT SOT23-6
• Manufacturer: Richtek USA Inc

Specifications of RT9300AGE

• Constant Current: Yes
• Internal Driver: Yes
• Type - Primary: Backlight, General Purpose
• Type - Secondary: White LED
• Mounting Type: Surface Mount
• Topology: Linear (LDO), PWM
• Number Of Outputs: 4
• Voltage - Supply: 2.5 V ~ 5.5 V
• Package / Case: SOT-23-6
• Operating Temperature: -40°C ~ 85°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency: -
• Voltage - Output: -

RT9300A/B
Function Block Diagram
Functional Pin Description
www.richtek.com
2
Pin
1
2
3
4
5
6
EN
GND
LED4
LED3
LED2
LED1
Name
Chip Enable (Active High).
Ground
LED4 Cathode Connection. Current flowing into LED4 is Constant. (20mA/15 mA)
LED4 is High Impedance when EN is Low.
LED3 Cathode Connection. Current flowing into LED3 is Constant. (20mA/15 mA)
LED3 is High Impedance when EN is Low.
LED2 Cathode Connection. Current flowing into LED2 is Constant. (20mA/15 mA)
LED2 is High Impedance when EN is Low.
LED1 Cathode Connection. Current flowing into LED1 is Constant. (20mA/15 mA)
LED1 is High Impedance when EN is Low.
EN
V
PWM
UVLO
Bandgap
IN
OTP
Figure 2. Application Circuit for Keypad.
1
V
EN
LED1
REF
6
+
-
LED2
RT9300A/B
5
GND
I
REF
2
LED3
4
Function
LED4
3
Keypad
LED
LED1
Current Source
LED2
0.1uF
LED3
C
LED4
DS9300A/B-04 October 2008