IC manufacturers Richtek

IC manufacturers (99)

Richtek RT6242B

12A, 18V, 500kHz, ACOT™ Synchronous Step-Down Converter

Overview

TopologyBuck Converter
Input voltage4.5-18 V
Output 11.8 V / 12 A
IC revision05

Description

The RT6242A/B is a synchronous step-down converter with Advanced Constant On-Time (ACOTTM) mode control. The ACOTTM provides a very fast transient response with few external components. The low impedance internal MOSFET supports high efficiency operation with wide input voltage range from 4.5V to 18V. The proprietary circuit of the RT6242A/B enables to support all ceramic capacitors. The output voltage can be adjustable between 0.7V and 8V. The soft-start is adjustable by an external capacitor.

Features

  • 4.5V to 18V Input Voltage Range
  • 12A Output Current
  • 12m Internal High-Side N-MOSFET and 5.4mInternal Low-Side N-MOSFET
  • Advanced Constant On-Time Control
  • Fast Transient Response
  • Support All Ceramic Capacitors
  • Up to 95% Efficiency
  • Adjustable Switching Frequency from 300kHz to700kHz
  • Adjustable Output Voltage from 0.7V to 8V
  • Adjustable Soft-Start
  • Pre-bias Start-Up
  • Adjustable Current Limit from 6A to 16A
  • Cycle-by-Cycle Over Current Protection
  • Power Good Output
  • Input Under-Voltage Lockout
  • Hiccup Mode Under-Voltage Protection
  • Thermal Shutdown Protection

Typical applications

  • Industrial and Commercial Low Power Systems / Point of Load Regulation for High-Performance DSPs, FPGAs, and ASICs
  • Computer Peripherals / LCD Monitors and TVs
  • Green Electronics/Appliances

More information

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialRDC max.
(mΩ)
LR
(µH)
Samples
7443320100SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

8 files Active i| Production is active. Expected lifetime: >10 years.WE-HCC SMT High Current Cube Inductor 1 34 30.6 33.5 96 Ferrite 2.5 0.9
744325120SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

8 files Active i| Production is active. Expected lifetime: >10 years.WE-HCI SMT Flat Wire High Current Inductor 1.2 32.6 12 25 1.8 75 Superflux 1.98 1
Order Code Data­sheet Simu­lation
7443320100SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

744325120SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
MaterialRDC max.
(mΩ)
LR
(µH)
Samples