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RT9293 Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part # RT9293
Description  Small Package, High Performance, Asynchronies Boost for 10 WLED Driver
PDF  13 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9293 Datasheet(HTML) 2 Page - Richtek Technology Corporation

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RT9293
2
DS9293-01 April 2011
www.richtek.com
Function Block Diagram
Functional Pin Description
Pin No.
RT9293□GJ6
RT9293□GQW
Pin Name
Pin Function
1
8
LX
Switching Pin.
2
1, 5,
9 (Exposed pad)
GND
Ground Pin. The exposed pad must be soldered to a large
PCB and connected to GND for maximum power dissipation.
3
6
FB
Feedback Pin, put a resistor to GND to setting the current.
4
4
EN
Chip Enable (Active High).
5
3
VOUT
Output Voltage Pin.
6
2
VIN
Input Supply.
--
7
NC
No Internal Connection.
Typical Application Circuit
VIN
EN
FB
VOUT
GND
RT9293
CIN
2.2µF
RSET
Chip Enable
L
22µH to 47µH
10 WLEDs
LX
VIN
COUT
1µF
VOUT
D
Logic Control,
Minimum On
Time
Current-
Sense
OCP
Driver
+
Slope
Compensation
PWM
EA
GM
LPF
20ms
Shutdown
Enable
Logic
OVP
OTP
UVLO
VREF
1µA
LX
GND
FB
VOUT
VIN
EN
Internal
Compensation
Internal
Soft Start
PWM
Oscillator
Reference
Voltage
Bias
Current



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