Datasheet > RT9365

RT9365

更新时间： 2024-01-03 17:19:15

品牌	Logo	应用领域
立锜 - RICHTEK		/
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RT9365 技术参数

Status：	Active	Vin (min) (V)：	2.8
Vin (max) (V)：	5	SW Freq (typ) (kHz)：	250
Number of LEDs (max) (pcs)：	5	Iout (max)/channel (mA)：	20
Iq (typ) (mA)：	1	Dimming Control：	Pulse
Topology：		Features：	Enable Input;OVP
Package Type：	WQFN3x3-16

RT9365 数据手册

RT9365

100mA 5-Channel Charge Pump White LED Driver with Low

Dropout Current Source

General Description

Features

^85% Average Efficiency Over Battery Life

The RT9365 is a high performance white LED driver. It

integrates current sources and automatic mode selection

charge pump. The part maintains the high efficiency by

utilizing an x1/x1.5 fractional charge pump and low dropout

current sources. The small equivalent x1 mode open loop

resistance and ultra-low dropout voltage of current source

extend the operating time of x1 mode and optimize the

efficiency of Li-ion battery in white LED applications.

^Support up to 5 White LEDs

^80mV Typical Current Source Dropout

^Support up to 100mA Output Current

^1% Typical LED Current Accuracy

^0.7% Typical LED Current Matching

^Soft Start Function

^Auto Charge Pump Mode Selection

^250kHz Fixed Frequency Oscillator

^Output Over Voltage Protection

^16-Step Brightness Control

The RT9365 supports up to 5 white LEDs and regulates a

constant current for uniform intensity. The part implements

a 4-bit DAC for brightness control. Users can easily

configure the LED current from 1.25mA to 20mA by a serial

pulse. The dimming of white LEDs current can be achieved

by applying a pulse signal to the ENpin. There are totally

16 steps of current could be set by users. The operating

voltage range is 2.8V to 5V. Internal soft start circuitry

effectively reduces the in-rush current while both start-up

and mode transition. The load is disconnected from V_IN

while shutdown and the shutdown current is less than

1μA.

^Low Input Noise and EMI

 Low 0.3μA Shutdown Current

 RoHS Compliant and 100% Lead (Pb)-Free

Applications

 Mobile Phone, DSC, MP3

 White LED Backlighting

 LCDDisplay Supply

Pin Configurations

RT9365 is available in a WQFN3x3-16L package.

(TOP VIEW)

Ordering Information

RT9365

Package Type

QW : WQFN-16L 3x3 (W-Type)

16 15 14 13

C1N

C2N

C2P

C1P

LED2

LED3

LED4

LED5

GND

Lead Plating System

P : Pb Free

G : Green (Halogen Free and Pb Free)

Note :

Richtek products are :

 RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

WQFN-16L 3x3

 Suitable for use in SnPb or Pb-free soldering processes.

Marking Information

For marking information, contact our sales representative

directly or through a Richtek distributor located in your

area.

DS9365-04 April 2011

www.richtek.com

12 3 4 5 6 7...10

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