Boost Converter. RT4533A Datasheet


RT4533A Converter. Datasheet pdf. Equivalent


Part Number

RT4533A

Description

Asynchronous Boost Converter

Manufacture

Richtek

Total Page 11 Pages
Datasheet
Download RT4533A Datasheet


RT4533A
®
RT4533/A
Asynchronous Boost Converter for 10 WLEDs
General Description
The RT4533/A is a highly integrated LED driver IC capable
of driving 10 WLEDs in series. It is composed of a current
mode Boost converter integrated with a 36.5V/1.2A power
switch.
The RT4533/A supports a wide input voltage range from
2.5V to 5.5V and runs at a fixed frequency of 1.1MHz.
The LED current is set via an external resistor and the
feedback voltage is regulated to 200mV / 300mV.
For brightness dimming, the RT4533/A supports PWM
dimming which determines the feedback reference voltage.
Applications
Cellular Phones
Digital Cameras
Probable Instruments
Marking Information
RT4533GJ6
0R=DNN
0R= : Product Code
DNN : Date Code
RT4533AGJ6
1L=DNN
1L= : Product Code
DNN : Date Code
Features
2.5V to 5.5V Input Voltage Range
36.5V Open LED Protection for 10 WLEDs
PWM Dimming Brightness Control
200mV / 300mV Reference Voltage with ±2%
Accuracy
1.1MHz Switching Frequency
Built-In Soft-Start
Over-Temperature Protection
Internal Compensation
Current Limit
RoHS Compliant and Halogen Free
Ordering Information
RT4533/A
Package Type
J6 : TSOT-23-6
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Feedback Voltage
RT4533 : 200mV
RT4533A : 300mV
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Simplified Application Circuit
VIN
Enable
LD
LX
VIN VOUT
RT4533/A
EN
GND
FB
VOUT
Copyright ©2015 Richtek Technology Corporation. All rights reserved.
DS4533/A-02 September 2015
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1

RT4533A
RT4533/A
Pin Configurations
(TOP VIEW)
VIN VOUT EN
654
23
LX GND FB
TSOT-23-6
Functional Pin Description
Pin No.
Pin Name
Pin Function
1 LX
Switch Node.
2 GND
Ground.
3 FB
Feedback Voltage Input. Put a resistor to GND to setting the current.
4 EN
Enable Control Input (PWM Dimming).
5 VOUT
Output Voltage Pin.
6 VIN
Supply Voltage Input.
Copyright ©2015 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS4533/A-02 September 2015


Features ® RT4533/A Asynchronous Boost Converte r for 10 WLEDs General Description The RT4533/A is a highly integrated LED dr iver IC capable of driving 10 WLEDs in series. It is composed of a current mod e Boost converter integrated with a 36. 5V/1.2A power switch. The RT4533/A supp orts a wide input voltage range from 2. 5V to 5.5V and runs at a fixed frequenc y of 1.1MHz. The LED current is set via an external resistor and the feedback voltage is regulated to 200mV / 300mV. For brightness dimming, the RT4533/A su pports PWM dimming which determines the feedback reference voltage. Applicati ons  Cellular Phones  Digital Cam eras  Probable Instruments Marking Information RT4533GJ6 0R=DNN 0R= : Pr oduct Code DNN : Date Code RT4533AGJ6 1L=DNN 1L= : Product Code DNN : Date C ode Features  2.5V to 5.5V Input Vo ltage Range  36.5V Open LED Protecti on for 10 WLEDs  PWM Dimming Brightn ess Control  200mV / 300mV Reference Voltage with ±2% Accuracy  1.1MHz Switching Frequency  Built-In Soft-Start .
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