DataSheetWiki


RT8023 fiches techniques PDF

Richtek - 1.2MHz 1.5A Synchronous Step-Down Converter

Numéro de référence RT8023
Description 1.2MHz 1.5A Synchronous Step-Down Converter
Fabricant Richtek 
Logo Richtek 





1 Page

No Preview Available !





RT8023 fiche technique
RT8023
1.2MHz 1.5A Synchronous Step-Down Converter
with Two LDOs
General Description
The RT8023 combines two low dropout (LDO) linear
regulators and a step-down converter with an input voltage
range of 2.6V to 5.5V. Each output voltage is adjustable
from 0.8V to 5V. With independent Enable and Power-
Good pins for each regulator, it is easy to control the power
up sequence, which is important in some applications.
The LDO has an independent input and is capable of
delivering up to 700mA(LDO1) and 350mA(LDO2) output
currents with ultra-low dropout. The LDO has high PSRR
and can work with low-ESR space saving ceramic
capacitors. All these make it Ideal for portable RF and
wireless applications with demanding performance and
space requirements. Other features include high output
accuracy, current limiting protection, and 40μs fast turn-
on time.
The step-down converter is a 1.2MHz PWM, current mode
converter. Its high switching frequency allows the use of
tiny, low cost capacitors and inductors 2mm or less in
height. Internal power switches with low on-resistance
increase efficiency and eliminate the need for external
Schottky diodes. The converter can run at 100% duty cycle
for low dropout operation that extends battery life in
portable systems.
Features
z Converter Input Voltage Range : 2.6V to 5.5V,
LDO Input Voltage Range : 2.4V to 5.5V
z Low-Noise LDO for RF Application
z Ultra-Fast Response in Line/Load Transient
z LDO Turn-On Time Less Than 40us
z Only 1μF LDO Output Capacitor Required for
Stability
z Current Limiting Protection
z 1.5A, High Efficiency Step-Down Converter
z 1.2MHZ Constant Switching Frequency
z Low RDS(ON) Internal Switches
z No Schottky Diode Required
z 0.8V Reference Allows Low Output Voltage
z Low Dropout Operation : 100% Duty Cycle
Internally Compensated
z < 2μA Shutdown Current
z Power Good Output Voltage Monitor
z Internal Soft-Start for PWM Converter
z Easy Power Sequence Control
z Over Temperature Protection
z Short Circuit Protection
z Thermally Enhanced 24-Lead WQFN Package
z RoHS Compliant and 100% Lead (Pb)-Free
Ordering Information
RT8023
Package Type
QW : WQFN-24L 4x4 (W-Type)
Note :
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
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.
Applications
z Portable Instruments
z Microprocessors and DSP Core Supplies
z Cellular Phones
z Wireless and DSL Modems
z PC Cards
z Digital Cameras
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
DS8023-03 March 2011
www.richtek.com
1

PagesPages 19
Télécharger [ RT8023 ]


Fiche technique recommandé

No Description détaillée Fabricant
RT8020 Dual High-Efficiency PWM Step-Down DC-DC Converter Richtek
Richtek
RT8023 1.2MHz 1.5A Synchronous Step-Down Converter Richtek
Richtek
RT8024 High Efficiency PWM Step-Down DC/DC Converter Richtek
Richtek
RT8025 High Efficiency PWM Step-Down DC/DC Converter Richtek
Richtek

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche