RT9284A-20GJ6E Datasheet, PDF (1/14 Pages) Richtek Technology Corporation – Maximum Output Voltage up to 20V, Dimming with Zero-inrush and Wide Frequency Range of 100 to 100kHz

RT9284A/B
Tiny Package, High Performance, Constant Current
Switching Regulator for White LED
General Description
The RT9284A/B is a compact, high efficient and high
integration LED driver. Internal 22V MOSFET can support
2 to 5 White LEDs for backlighting and camera flashing.
Highly integration and internal compensation network
minimizes as 5 external component counts. Optimized
operation frequency can meet the requirement of small
LC filters value and low operation current with high
efficiency. Internal soft start function can reduce the inrush
current. Tiny package type of TSOT-23-5 and TSOT-23-6
packages provide the best solution for PCB space saving
and total BOM cost.
Features
z V_IN Operating Range : 2.7V to 5.5V
z Maximum Output Voltage up to 20V
z Dimming with Zero-inrush and Wide Frequency
Range of 100 to 100kHz
z Over Voltage Protection
z Output Current up to 100mA at V_OUT : 12V
z Zero Shutdown Supply Current
z Minimize the External Component
z Small LC Filter
z Internal Soft Start
z RoHS Compliant and 100% Lead (Pb)-Free
Ordering Information
RT9284 (- )
Package Type
J5 : TSOT-23-5
J6 : TSOT-23-6
Applications
z Camera Flash White LED
z Mobile Phone, Smart Phone LED Backlight
z PDA LED Backlight
z Digital Still Camera
Lead Plating System
z Camcorder
P : Pb Free
G : Green (Halogen Free and Pb Free) _{Pin Configurations}
OVP Voltage
15 : 15V
20 : 20V
TOP VIEW
VDD
EN
Note :
FB Voltage
A : 1.235V
B : 0.25V
5
4
2
3
LX GND FB
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
TSOT-23-5
VDD OVP EN
` Suitable for use in SnPb or Pb-free soldering processes.
6
5
4
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
2
3
LX GND FB
TSOT-23-6
DS9284A/B-07 April 2011
www.richtek.com
1