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RT8009, RT8009-15GJ5, RT8009-15PJ5

Table of contents:
Info of RT8009
Info of RT8009-15GJ5
Info of RT8009-15PJ5

RT8009, RT8009-15GJ5, RT8009-15PJ5 Selling Leads, Datasheet

MFG:RiChTek Package Cooled:SOT23-5 D/C:09+

RT8009, RT8009-15GJ5, RT8009-15PJ5 Picture

RT8009, RT8009-15GJ5, RT8009-15PJ5 Datasheet download

Five Points

Part Number: RT8009

MFG: RiChTek

Package Cooled: SOT23-5

D/C: 09+

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RT8009 General Description

The RT8009 is a high-efficiency pulse-width-modulated (PWM) step-down DC-DC converter. Capable of delivering 600mA output current over a wide input voltage range from 2.5 to 5.5V, the RT8009 is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs and handy-terminals.

Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PWM mode. No external Schottky diode is required in practical application. The RT8009 automatically turns off the synchronous rectifier while the inductor current is low and enters discontinuous PWM mode. This can increase efficiency at light load condition.

The RT8009 enters Low-Dropout mode when normal PWM cannot provide regulated output voltage by continuously turning on the upper P-MOSFET. RT8009 enter shutdown mode and consumes less than 0.1uA when EN pin is pulled low.

The switching ripple is easily smoothed-out by small package filtering elements due to a fixed operation frequency of 1.25MHz. This along with small SOT-23-5
and TSOT-23-5 package provides small PCB area application. Other features include soft start, lower internal reference voltage with 2% accuracy, over temperature protection, and over current protection.

RT8009 Maximum Ratings

Supply Input Voltage .............................. 6.5V
Enable, FB Voltage ............................ VIN + 0.6V
Power Dissipation, P_D @ TA = 25°C
SOT-23-5, TSOT-23-5 ............................. 0.4W
Package Thermal Resistance (Note 4)
SOT-23-5, TSOT-23-5, _JA ........................- 250°C/W
SOT-23-5, TSOT-23-5, _JC ......................... 130°C/W
Lead Temperature (Soldering, 10 sec.) ....................260°C
Storage Temperature Range ................... −65°C to 150°C
ESD Susceptibility (Note 2)
HBM (Human Body Mode) .............................2kV
MM (Machine Mode) ...............................200V

RT8009 Features

·+2.5V to +5.5V Input Range
·Adjustable Output From 0.5V to VIN
·1.0V, 1.2V, 1.5V, 1.8V, 2.5V and 3.3V Fixed/ Adjustable Output Voltage
·600mA Output Current
·95% Efficiency
·No Schottky Diode Required
·1.25MHz Fixed-Frequency PWM Operation
·Small SOT-23-5 and TSOT-23-5 Package
·RoHS Compliant and 100% Lead (Pb)-Free

RT8009 Typical Application

·Cellular Telephones
·Personal Information Appliances
·Wireless and DSL Modems
·MP3 Players
·Portable Instruments

RT8009 Connection Diagram

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