RT9285C

Tiny Package, High Performance, Diode Embedded White LED Driver

The RT9285C is a high frequency asynchronous boost converter with internal diode, which can support 2 to 5 White LEDs for backlighting and OLED power supply. The Internal soft start function can reduce the inrush current. The device operates with 1MHz fixed switching frequency to allow small external components and to simplify possible EMI problems. The device comes with 20V over voltage protection to allow inexpensive and small-output capacitors with lower voltage rating. The LED current is initially set with the external sense resistor R_SET, and the feedback voltage is 250mV. Tiny package type TSOT-23-6, XDFN-8L 2x2 and WDFN-8L 2x2 packages provide the best solution for PCB space saving and total BOM cost.

Applications

Cellular Phones
Digital Cameras
PDAs and Smart Phones
Porbable Instruments
MP3 Player
OLED Power

Key Spec.
	RT9285C
Status	Active
Vin (min) (V)	2.7
Vin (max) (V)	5.5
Vout (max) (V)	22
Output Adj. Method	Resistor
Iq (typ) (mA)	0.3
SW Current Limit (typ) (A)	0.4
Freq (typ) (kHz)	1000
Ron (typ) (Ohm)	0.75
Features	Enable Input;Internal Compensation;OCP;OVP;Power Good;Stable with Ceramic Capacitor
Package Type	TSOT-26;WDFN2x2-8;XDFN2x2-8

Features

V_IN Operating Range : 2.7V to 5.5V
Up to 85% Efficiency
22V Internal Power NMOS
1MHz Switching Frequency
Built-in Diode
Digital Dimming with Zero-Inrush
Input UVLO Protection
Output Over Voltage Protection
Internal Soft Start and Compensation
TSOT-23-6, 8-Lead XDFN and WDFN Package
RoHS Compliant and 100% Lead (Pb)-Free

Datasheet
Title	Version	Last Update	Download
RT9285C: Tiny Package, High Performance, Diode Embedded White LED Driver	V3.0	2015/04/29

Part Number	Package Type	Package Qty.	Free Sample	Distributor	Stock	Buy From Authorized Distributor
RT9285CGQW	WDFN2x2-8	2,500	Request	Digikey	37	Buy
				Mouser	Lead-Time: 14 weeks	Not Available
				WPG	Lead-Time: 14 weeks	Not Available

Please confirm with our distributor or sales representative for actual stock status.